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Nick Lewyckyd489edf2012-02-25 07:20:06 +00001//===-- Verifier.cpp - Implement the Module Verifier -----------------------==//
Misha Brukmanb1c93172005-04-21 23:48:37 +00002//
John Criswell482202a2003-10-20 19:43:21 +00003// The LLVM Compiler Infrastructure
4//
Chris Lattnerf3ebc3f2007-12-29 20:36:04 +00005// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
Misha Brukmanb1c93172005-04-21 23:48:37 +00007//
John Criswell482202a2003-10-20 19:43:21 +00008//===----------------------------------------------------------------------===//
Chris Lattner2f7c9632001-06-06 20:29:01 +00009//
Chris Lattner3e6e3e62002-03-29 19:06:18 +000010// This file defines the function verifier interface, that can be used for some
Chris Lattner2f7c9632001-06-06 20:29:01 +000011// sanity checking of input to the system.
12//
Misha Brukman1c9de462004-06-24 21:47:35 +000013// Note that this does not provide full `Java style' security and verifications,
14// instead it just tries to ensure that code is well-formed.
Chris Lattner2f7c9632001-06-06 20:29:01 +000015//
Misha Brukman1c9de462004-06-24 21:47:35 +000016// * Both of a binary operator's parameters are of the same type
Chris Lattnerd46bb6e2002-04-24 19:12:21 +000017// * Verify that the indices of mem access instructions match other operands
Misha Brukman1c9de462004-06-24 21:47:35 +000018// * Verify that arithmetic and other things are only performed on first-class
Chris Lattner8e72d6f2002-08-02 17:37:08 +000019// types. Verify that shifts & logicals only happen on integrals f.e.
Misha Brukman1c9de462004-06-24 21:47:35 +000020// * All of the constants in a switch statement are of the correct type
Chris Lattner8e72d6f2002-08-02 17:37:08 +000021// * The code is in valid SSA form
Misha Brukman1c9de462004-06-24 21:47:35 +000022// * It should be illegal to put a label into any other type (like a structure)
Chris Lattner2f7c9632001-06-06 20:29:01 +000023// or to return one. [except constant arrays!]
Nick Lewyckyf88c84f2008-03-28 06:46:51 +000024// * Only phi nodes can be self referential: 'add i32 %0, %0 ; <int>:0' is bad
Chris Lattnerd02f08d2002-02-20 17:55:43 +000025// * PHI nodes must have an entry for each predecessor, with no extras.
Chris Lattner069a7952002-06-25 15:56:27 +000026// * PHI nodes must be the first thing in a basic block, all grouped together
Chris Lattner4cd9df82002-10-06 21:00:31 +000027// * PHI nodes must have at least one entry
Chris Lattner069a7952002-06-25 15:56:27 +000028// * All basic blocks should only end with terminator insts, not contain them
Chris Lattner3e6e3e62002-03-29 19:06:18 +000029// * The entry node to a function must not have predecessors
Misha Brukmanfa100532003-10-10 17:54:14 +000030// * All Instructions must be embedded into a basic block
Misha Brukman1c9de462004-06-24 21:47:35 +000031// * Functions cannot take a void-typed parameter
Chris Lattneraf95e582002-04-13 22:48:46 +000032// * Verify that a function's argument list agrees with it's declared type.
Chris Lattnerfbf5be52002-03-15 20:25:09 +000033// * It is illegal to specify a name for a void value.
Misha Brukmanfa100532003-10-10 17:54:14 +000034// * It is illegal to have a internal global value with no initializer
Chris Lattner486302a2002-04-12 18:20:49 +000035// * It is illegal to have a ret instruction that returns a value that does not
36// agree with the function return value type.
Chris Lattner338a4622002-05-08 19:49:50 +000037// * Function call argument types match the function prototype
Bill Wendlingfae14752011-08-12 20:24:12 +000038// * A landing pad is defined by a landingpad instruction, and can be jumped to
39// only by the unwind edge of an invoke instruction.
40// * A landingpad instruction must be the first non-PHI instruction in the
41// block.
42// * All landingpad instructions must use the same personality function with
43// the same function.
Chris Lattnerd46bb6e2002-04-24 19:12:21 +000044// * All other things that are tested by asserts spread about the code...
Chris Lattner2f7c9632001-06-06 20:29:01 +000045//
46//===----------------------------------------------------------------------===//
47
Chandler Carruth5ad5f152014-01-13 09:26:24 +000048#include "llvm/IR/Verifier.h"
Chandler Carruthed0881b2012-12-03 16:50:05 +000049#include "llvm/ADT/STLExtras.h"
50#include "llvm/ADT/SetVector.h"
51#include "llvm/ADT/SmallPtrSet.h"
52#include "llvm/ADT/SmallVector.h"
53#include "llvm/ADT/StringExtras.h"
Chandler Carruth1305dc32014-03-04 11:45:46 +000054#include "llvm/IR/CFG.h"
Chandler Carruth219b89b2014-03-04 11:01:28 +000055#include "llvm/IR/CallSite.h"
Chandler Carruth9fb823b2013-01-02 11:36:10 +000056#include "llvm/IR/CallingConv.h"
Chandler Carruth8cd041e2014-03-04 12:24:34 +000057#include "llvm/IR/ConstantRange.h"
Chandler Carruth9fb823b2013-01-02 11:36:10 +000058#include "llvm/IR/Constants.h"
Matt Arsenault24b49c42013-07-31 17:49:08 +000059#include "llvm/IR/DataLayout.h"
Chandler Carruth9a4c9e52014-03-06 00:46:21 +000060#include "llvm/IR/DebugInfo.h"
Chandler Carruth9fb823b2013-01-02 11:36:10 +000061#include "llvm/IR/DerivedTypes.h"
Chandler Carruth5ad5f152014-01-13 09:26:24 +000062#include "llvm/IR/Dominators.h"
Chandler Carruth9fb823b2013-01-02 11:36:10 +000063#include "llvm/IR/InlineAsm.h"
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +000064#include "llvm/IR/InstIterator.h"
Chandler Carruth7da14f12014-03-06 03:23:41 +000065#include "llvm/IR/InstVisitor.h"
Chandler Carruth9fb823b2013-01-02 11:36:10 +000066#include "llvm/IR/IntrinsicInst.h"
67#include "llvm/IR/LLVMContext.h"
68#include "llvm/IR/Metadata.h"
69#include "llvm/IR/Module.h"
Chandler Carruth4d356312014-01-20 11:34:08 +000070#include "llvm/IR/PassManager.h"
Philip Reames38303a32014-12-03 19:53:15 +000071#include "llvm/IR/Statepoint.h"
Chris Lattner8a923e72008-03-12 17:45:29 +000072#include "llvm/Pass.h"
Manman Ren74c61b92013-07-19 00:31:03 +000073#include "llvm/Support/CommandLine.h"
Chandler Carruthed0881b2012-12-03 16:50:05 +000074#include "llvm/Support/Debug.h"
Torok Edwin6dd27302009-07-08 18:01:40 +000075#include "llvm/Support/ErrorHandling.h"
Chris Lattner24025262009-02-28 21:05:51 +000076#include "llvm/Support/raw_ostream.h"
Chris Lattnerd02f08d2002-02-20 17:55:43 +000077#include <algorithm>
Jeff Cohene4535522006-03-31 07:22:05 +000078#include <cstdarg>
Chris Lattner189d19f2003-11-21 20:23:48 +000079using namespace llvm;
Brian Gaeke960707c2003-11-11 22:41:34 +000080
Duncan P. N. Exon Smith0633fd72015-03-17 17:28:41 +000081static cl::opt<bool> VerifyDebugInfo("verify-debug-info", cl::init(true));
Manman Ren74c61b92013-07-19 00:31:03 +000082
Dan Gohmand78c4002008-05-13 00:00:25 +000083namespace {
Duncan P. N. Exon Smith67b44da2014-04-15 16:27:32 +000084struct VerifierSupport {
Chandler Carruth043949d2014-01-19 02:22:18 +000085 raw_ostream &OS;
86 const Module *M;
Duncan P. N. Exon Smith67b44da2014-04-15 16:27:32 +000087
88 /// \brief Track the brokenness of the module while recursively visiting.
89 bool Broken;
Duncan P. N. Exon Smith8b866d12015-03-20 00:48:23 +000090 bool EverBroken;
Duncan P. N. Exon Smith67b44da2014-04-15 16:27:32 +000091
92 explicit VerifierSupport(raw_ostream &OS)
Duncan P. N. Exon Smith8b866d12015-03-20 00:48:23 +000093 : OS(OS), M(nullptr), Broken(false), EverBroken(false) {}
Duncan P. N. Exon Smith67b44da2014-04-15 16:27:32 +000094
Benjamin Kramerf027ad72015-03-07 21:15:40 +000095private:
96 void Write(const Value *V) {
Duncan P. N. Exon Smith67b44da2014-04-15 16:27:32 +000097 if (!V)
98 return;
99 if (isa<Instruction>(V)) {
100 OS << *V << '\n';
101 } else {
102 V->printAsOperand(OS, true, M);
103 OS << '\n';
104 }
105 }
106
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000107 void Write(const Metadata *MD) {
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000108 if (!MD)
109 return;
Duncan P. N. Exon Smithd6d70e72015-03-14 20:19:36 +0000110 MD->print(OS, M);
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000111 OS << '\n';
112 }
113
Duncan P. N. Exon Smithf238c782015-03-24 17:18:03 +0000114 void Write(const NamedMDNode *NMD) {
115 if (!NMD)
116 return;
117 NMD->print(OS);
118 OS << '\n';
119 }
120
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000121 void Write(Type *T) {
Duncan P. N. Exon Smith67b44da2014-04-15 16:27:32 +0000122 if (!T)
123 return;
124 OS << ' ' << *T;
125 }
126
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000127 void Write(const Comdat *C) {
David Majnemerdad0a642014-06-27 18:19:56 +0000128 if (!C)
129 return;
130 OS << *C;
131 }
132
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000133 template <typename T1, typename... Ts>
134 void WriteTs(const T1 &V1, const Ts &... Vs) {
135 Write(V1);
136 WriteTs(Vs...);
137 }
138
139 template <typename... Ts> void WriteTs() {}
140
141public:
Duncan P. N. Exon Smithf2929c92015-03-16 17:49:03 +0000142 /// \brief A check failed, so printout out the condition and the message.
143 ///
144 /// This provides a nice place to put a breakpoint if you want to see why
145 /// something is not correct.
Duncan P. N. Exon Smithec9d3f72015-03-14 16:47:37 +0000146 void CheckFailed(const Twine &Message) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000147 OS << Message << '\n';
Duncan P. N. Exon Smith8b866d12015-03-20 00:48:23 +0000148 EverBroken = Broken = true;
David Majnemerdad0a642014-06-27 18:19:56 +0000149 }
Duncan P. N. Exon Smithec9d3f72015-03-14 16:47:37 +0000150
Duncan P. N. Exon Smithf2929c92015-03-16 17:49:03 +0000151 /// \brief A check failed (with values to print).
152 ///
153 /// This calls the Message-only version so that the above is easier to set a
154 /// breakpoint on.
Duncan P. N. Exon Smithec9d3f72015-03-14 16:47:37 +0000155 template <typename T1, typename... Ts>
156 void CheckFailed(const Twine &Message, const T1 &V1, const Ts &... Vs) {
157 CheckFailed(Message);
158 WriteTs(V1, Vs...);
159 }
Duncan P. N. Exon Smith67b44da2014-04-15 16:27:32 +0000160};
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000161
Duncan P. N. Exon Smith67b44da2014-04-15 16:27:32 +0000162class Verifier : public InstVisitor<Verifier>, VerifierSupport {
163 friend class InstVisitor<Verifier>;
164
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000165 LLVMContext *Context;
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000166 DominatorTree DT;
Chris Lattnerc9e79d02004-09-29 20:07:45 +0000167
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000168 /// \brief When verifying a basic block, keep track of all of the
169 /// instructions we have seen so far.
170 ///
171 /// This allows us to do efficient dominance checks for the case when an
172 /// instruction has an operand that is an instruction in the same block.
173 SmallPtrSet<Instruction *, 16> InstsInThisBlock;
Bill Wendlingfae14752011-08-12 20:24:12 +0000174
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000175 /// \brief Keep track of the metadata nodes that have been checked already.
Duncan P. N. Exon Smithac3ed7a2015-02-09 21:30:05 +0000176 SmallPtrSet<const Metadata *, 32> MDNodes;
Manman Ren9974c882013-07-23 00:22:51 +0000177
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000178 /// \brief The personality function referenced by the LandingPadInsts.
179 /// All LandingPadInsts within the same function must use the same
180 /// personality function.
181 const Value *PersonalityFn;
Chris Lattner2f7c9632001-06-06 20:29:01 +0000182
Reid Klecknercfb9ce52015-03-05 18:26:34 +0000183 /// \brief Whether we've seen a call to @llvm.frameescape in this function
Reid Klecknere9b89312015-01-13 00:48:10 +0000184 /// already.
Reid Klecknercfb9ce52015-03-05 18:26:34 +0000185 bool SawFrameEscape;
186
187 /// Stores the count of how many objects were passed to llvm.frameescape for a
188 /// given function and the largest index passed to llvm.framerecover.
189 DenseMap<Function *, std::pair<unsigned, unsigned>> FrameEscapeInfo;
Reid Klecknere9b89312015-01-13 00:48:10 +0000190
Chandler Carruth043949d2014-01-19 02:22:18 +0000191public:
Duncan P. N. Exon Smith6fb58c42015-03-15 00:46:57 +0000192 explicit Verifier(raw_ostream &OS)
Reid Klecknere9b89312015-01-13 00:48:10 +0000193 : VerifierSupport(OS), Context(nullptr), PersonalityFn(nullptr),
Reid Klecknercfb9ce52015-03-05 18:26:34 +0000194 SawFrameEscape(false) {}
Chris Lattner0e851da2002-04-18 20:37:37 +0000195
Chandler Carruth043949d2014-01-19 02:22:18 +0000196 bool verify(const Function &F) {
197 M = F.getParent();
198 Context = &M->getContext();
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000199
200 // First ensure the function is well-enough formed to compute dominance
201 // information.
Chandler Carruth043949d2014-01-19 02:22:18 +0000202 if (F.empty()) {
203 OS << "Function '" << F.getName()
204 << "' does not contain an entry block!\n";
205 return false;
206 }
207 for (Function::const_iterator I = F.begin(), E = F.end(); I != E; ++I) {
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000208 if (I->empty() || !I->back().isTerminator()) {
Chandler Carruth043949d2014-01-19 02:22:18 +0000209 OS << "Basic Block in function '" << F.getName()
210 << "' does not have terminator!\n";
211 I->printAsOperand(OS, true);
212 OS << "\n";
213 return false;
Chandler Carruth76777602014-01-17 10:56:02 +0000214 }
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000215 }
Chandler Carruth76777602014-01-17 10:56:02 +0000216
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000217 // Now directly compute a dominance tree. We don't rely on the pass
218 // manager to provide this as it isolates us from a potentially
219 // out-of-date dominator tree and makes it significantly more complex to
220 // run this code outside of a pass manager.
Chandler Carruth043949d2014-01-19 02:22:18 +0000221 // FIXME: It's really gross that we have to cast away constness here.
222 DT.recalculate(const_cast<Function &>(F));
Chris Lattneraf332ee2007-04-20 23:59:29 +0000223
Chandler Carruth043949d2014-01-19 02:22:18 +0000224 Broken = false;
225 // FIXME: We strip const here because the inst visitor strips const.
226 visit(const_cast<Function &>(F));
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000227 InstsInThisBlock.clear();
Craig Topperc6207612014-04-09 06:08:46 +0000228 PersonalityFn = nullptr;
Reid Klecknercfb9ce52015-03-05 18:26:34 +0000229 SawFrameEscape = false;
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000230
Chandler Carruth043949d2014-01-19 02:22:18 +0000231 return !Broken;
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000232 }
233
Chandler Carruth043949d2014-01-19 02:22:18 +0000234 bool verify(const Module &M) {
235 this->M = &M;
236 Context = &M.getContext();
Chandler Carruth043949d2014-01-19 02:22:18 +0000237 Broken = false;
238
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000239 // Scan through, checking all of the external function's linkage now...
Chandler Carruth043949d2014-01-19 02:22:18 +0000240 for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) {
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000241 visitGlobalValue(*I);
242
243 // Check to make sure function prototypes are okay.
244 if (I->isDeclaration())
245 visitFunction(*I);
246 }
247
Reid Klecknercfb9ce52015-03-05 18:26:34 +0000248 // Now that we've visited every function, verify that we never asked to
249 // recover a frame index that wasn't escaped.
250 verifyFrameRecoverIndices();
251
Chandler Carruth043949d2014-01-19 02:22:18 +0000252 for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000253 I != E; ++I)
254 visitGlobalVariable(*I);
255
Chandler Carruth043949d2014-01-19 02:22:18 +0000256 for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
257 I != E; ++I)
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000258 visitGlobalAlias(*I);
259
Chandler Carruth043949d2014-01-19 02:22:18 +0000260 for (Module::const_named_metadata_iterator I = M.named_metadata_begin(),
261 E = M.named_metadata_end();
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000262 I != E; ++I)
263 visitNamedMDNode(*I);
264
David Majnemerdad0a642014-06-27 18:19:56 +0000265 for (const StringMapEntry<Comdat> &SMEC : M.getComdatSymbolTable())
266 visitComdat(SMEC.getValue());
267
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000268 visitModuleFlags(M);
269 visitModuleIdents(M);
270
Duncan P. N. Exon Smith8b866d12015-03-20 00:48:23 +0000271 // Verify debug info last.
272 verifyDebugInfo();
273
Chandler Carruth043949d2014-01-19 02:22:18 +0000274 return !Broken;
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000275 }
Chris Lattner9713b842002-04-28 16:04:26 +0000276
Chandler Carruth043949d2014-01-19 02:22:18 +0000277private:
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000278 // Verification methods...
Chandler Carruth043949d2014-01-19 02:22:18 +0000279 void visitGlobalValue(const GlobalValue &GV);
280 void visitGlobalVariable(const GlobalVariable &GV);
281 void visitGlobalAlias(const GlobalAlias &GA);
Rafael Espindola64c1e182014-06-03 02:41:57 +0000282 void visitAliaseeSubExpr(const GlobalAlias &A, const Constant &C);
Craig Topper71b7b682014-08-21 05:55:13 +0000283 void visitAliaseeSubExpr(SmallPtrSetImpl<const GlobalAlias *> &Visited,
Rafael Espindola64c1e182014-06-03 02:41:57 +0000284 const GlobalAlias &A, const Constant &C);
Chandler Carruth043949d2014-01-19 02:22:18 +0000285 void visitNamedMDNode(const NamedMDNode &NMD);
Duncan P. N. Exon Smithac3ed7a2015-02-09 21:30:05 +0000286 void visitMDNode(const MDNode &MD);
287 void visitMetadataAsValue(const MetadataAsValue &MD, Function *F);
288 void visitValueAsMetadata(const ValueAsMetadata &MD, Function *F);
David Majnemerdad0a642014-06-27 18:19:56 +0000289 void visitComdat(const Comdat &C);
Chandler Carruth043949d2014-01-19 02:22:18 +0000290 void visitModuleIdents(const Module &M);
291 void visitModuleFlags(const Module &M);
292 void visitModuleFlag(const MDNode *Op,
293 DenseMap<const MDString *, const MDNode *> &SeenIDs,
294 SmallVectorImpl<const MDNode *> &Requirements);
295 void visitFunction(const Function &F);
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000296 void visitBasicBlock(BasicBlock &BB);
Philip Reamesbf9676f2014-10-20 23:52:07 +0000297 void visitRangeMetadata(Instruction& I, MDNode* Range, Type* Ty);
298
Duncan P. N. Exon Smith869db502015-03-30 16:19:15 +0000299 template <class Ty> bool isValidMetadataArray(const MDTuple &N);
Duncan P. N. Exon Smithb0a19ad2015-02-10 01:09:50 +0000300#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) void visit##CLASS(const CLASS &N);
301#include "llvm/IR/Metadata.def"
Duncan P. N. Exon Smith53855f02015-03-27 23:05:04 +0000302 void visitMDScope(const MDScope &N);
303 void visitMDDerivedTypeBase(const MDDerivedTypeBase &N);
Duncan P. N. Exon Smith3d2afaa2015-03-27 17:29:58 +0000304 void visitMDVariable(const MDVariable &N);
Duncan P. N. Exon Smith0e202b92015-03-30 16:37:48 +0000305 void visitMDLexicalBlockBase(const MDLexicalBlockBase &N);
Duncan P. N. Exon Smithf9b47752015-03-30 17:21:38 +0000306 void visitMDTemplateParameter(const MDTemplateParameter &N);
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000307
Chandler Carruth043949d2014-01-19 02:22:18 +0000308 // InstVisitor overrides...
309 using InstVisitor<Verifier>::visit;
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000310 void visit(Instruction &I);
311
312 void visitTruncInst(TruncInst &I);
313 void visitZExtInst(ZExtInst &I);
314 void visitSExtInst(SExtInst &I);
315 void visitFPTruncInst(FPTruncInst &I);
316 void visitFPExtInst(FPExtInst &I);
317 void visitFPToUIInst(FPToUIInst &I);
318 void visitFPToSIInst(FPToSIInst &I);
319 void visitUIToFPInst(UIToFPInst &I);
320 void visitSIToFPInst(SIToFPInst &I);
321 void visitIntToPtrInst(IntToPtrInst &I);
322 void visitPtrToIntInst(PtrToIntInst &I);
323 void visitBitCastInst(BitCastInst &I);
324 void visitAddrSpaceCastInst(AddrSpaceCastInst &I);
325 void visitPHINode(PHINode &PN);
326 void visitBinaryOperator(BinaryOperator &B);
327 void visitICmpInst(ICmpInst &IC);
328 void visitFCmpInst(FCmpInst &FC);
329 void visitExtractElementInst(ExtractElementInst &EI);
330 void visitInsertElementInst(InsertElementInst &EI);
331 void visitShuffleVectorInst(ShuffleVectorInst &EI);
332 void visitVAArgInst(VAArgInst &VAA) { visitInstruction(VAA); }
333 void visitCallInst(CallInst &CI);
334 void visitInvokeInst(InvokeInst &II);
335 void visitGetElementPtrInst(GetElementPtrInst &GEP);
336 void visitLoadInst(LoadInst &LI);
337 void visitStoreInst(StoreInst &SI);
338 void verifyDominatesUse(Instruction &I, unsigned i);
339 void visitInstruction(Instruction &I);
340 void visitTerminatorInst(TerminatorInst &I);
341 void visitBranchInst(BranchInst &BI);
342 void visitReturnInst(ReturnInst &RI);
343 void visitSwitchInst(SwitchInst &SI);
344 void visitIndirectBrInst(IndirectBrInst &BI);
345 void visitSelectInst(SelectInst &SI);
346 void visitUserOp1(Instruction &I);
347 void visitUserOp2(Instruction &I) { visitUserOp1(I); }
348 void visitIntrinsicFunctionCall(Intrinsic::ID ID, CallInst &CI);
Duncan P. N. Exon Smith166121a2015-03-15 01:21:30 +0000349 template <class DbgIntrinsicTy>
350 void visitDbgIntrinsic(StringRef Kind, DbgIntrinsicTy &DII);
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000351 void visitAtomicCmpXchgInst(AtomicCmpXchgInst &CXI);
352 void visitAtomicRMWInst(AtomicRMWInst &RMWI);
353 void visitFenceInst(FenceInst &FI);
354 void visitAllocaInst(AllocaInst &AI);
355 void visitExtractValueInst(ExtractValueInst &EVI);
356 void visitInsertValueInst(InsertValueInst &IVI);
357 void visitLandingPadInst(LandingPadInst &LPI);
358
359 void VerifyCallSite(CallSite CS);
Reid Kleckner5772b772014-04-24 20:14:34 +0000360 void verifyMustTailCall(CallInst &CI);
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000361 bool PerformTypeCheck(Intrinsic::ID ID, Function *F, Type *Ty, int VT,
362 unsigned ArgNo, std::string &Suffix);
363 bool VerifyIntrinsicType(Type *Ty, ArrayRef<Intrinsic::IITDescriptor> &Infos,
364 SmallVectorImpl<Type *> &ArgTys);
365 bool VerifyIntrinsicIsVarArg(bool isVarArg,
366 ArrayRef<Intrinsic::IITDescriptor> &Infos);
367 bool VerifyAttributeCount(AttributeSet Attrs, unsigned Params);
368 void VerifyAttributeTypes(AttributeSet Attrs, unsigned Idx, bool isFunction,
369 const Value *V);
370 void VerifyParameterAttrs(AttributeSet Attrs, unsigned Idx, Type *Ty,
371 bool isReturnValue, const Value *V);
372 void VerifyFunctionAttrs(FunctionType *FT, AttributeSet Attrs,
373 const Value *V);
374
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000375 void VerifyConstantExprBitcastType(const ConstantExpr *CE);
Philip Reames0285c742015-02-03 23:18:47 +0000376 void VerifyStatepoint(ImmutableCallSite CS);
Reid Klecknercfb9ce52015-03-05 18:26:34 +0000377 void verifyFrameRecoverIndices();
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000378
Duncan P. N. Exon Smith8b866d12015-03-20 00:48:23 +0000379 // Module-level debug info verification...
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000380 void verifyDebugInfo();
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +0000381 void processInstructions(DebugInfoFinder &Finder);
382 void processCallInst(DebugInfoFinder &Finder, const CallInst &CI);
Chandler Carruthbf2b6522014-01-17 11:09:34 +0000383};
Chris Lattner189d19f2003-11-21 20:23:48 +0000384} // End anonymous namespace
385
Chris Lattnerd02f08d2002-02-20 17:55:43 +0000386// Assert - We know that cond should be true, if not print an error message.
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000387#define Assert(C, ...) \
388 do { if (!(C)) { CheckFailed(__VA_ARGS__); return; } } while (0)
Chris Lattner2f7c9632001-06-06 20:29:01 +0000389
Chris Lattnere5a22c02008-08-28 04:02:44 +0000390void Verifier::visit(Instruction &I) {
391 for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i)
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000392 Assert(I.getOperand(i) != nullptr, "Operand is null", &I);
Chris Lattnere5a22c02008-08-28 04:02:44 +0000393 InstVisitor<Verifier>::visit(I);
394}
395
396
Chandler Carruth043949d2014-01-19 02:22:18 +0000397void Verifier::visitGlobalValue(const GlobalValue &GV) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000398 Assert(!GV.isDeclaration() || GV.hasExternalLinkage() ||
399 GV.hasExternalWeakLinkage(),
400 "Global is external, but doesn't have external or weak linkage!", &GV);
Anton Korobeynikovd61d39e2006-09-14 18:23:27 +0000401
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000402 Assert(GV.getAlignment() <= Value::MaximumAlignment,
403 "huge alignment values are unsupported", &GV);
404 Assert(!GV.hasAppendingLinkage() || isa<GlobalVariable>(GV),
405 "Only global variables can have appending linkage!", &GV);
Chris Lattner3ac483b2003-04-16 20:42:40 +0000406
407 if (GV.hasAppendingLinkage()) {
Chandler Carruth043949d2014-01-19 02:22:18 +0000408 const GlobalVariable *GVar = dyn_cast<GlobalVariable>(&GV);
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000409 Assert(GVar && GVar->getType()->getElementType()->isArrayTy(),
410 "Only global arrays can have appending linkage!", GVar);
Chris Lattner3ac483b2003-04-16 20:42:40 +0000411 }
412}
413
Chandler Carruth043949d2014-01-19 02:22:18 +0000414void Verifier::visitGlobalVariable(const GlobalVariable &GV) {
Chris Lattnerd79f3d52007-09-19 17:14:45 +0000415 if (GV.hasInitializer()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000416 Assert(GV.getInitializer()->getType() == GV.getType()->getElementType(),
417 "Global variable initializer type does not match global "
418 "variable type!",
419 &GV);
Nick Lewyckyadbc2842009-05-30 05:06:04 +0000420
Chris Lattner0aff0b22009-08-05 05:41:44 +0000421 // If the global has common linkage, it must have a zero initializer and
422 // cannot be constant.
423 if (GV.hasCommonLinkage()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000424 Assert(GV.getInitializer()->isNullValue(),
425 "'common' global must have a zero initializer!", &GV);
426 Assert(!GV.isConstant(), "'common' global may not be marked constant!",
427 &GV);
428 Assert(!GV.hasComdat(), "'common' global may not be in a Comdat!", &GV);
Chris Lattner0aff0b22009-08-05 05:41:44 +0000429 }
Chris Lattnerd79f3d52007-09-19 17:14:45 +0000430 } else {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000431 Assert(GV.hasExternalLinkage() || GV.hasExternalWeakLinkage(),
432 "invalid linkage type for global declaration", &GV);
Chris Lattnerd79f3d52007-09-19 17:14:45 +0000433 }
Misha Brukmanb1c93172005-04-21 23:48:37 +0000434
Nick Lewycky466d0c12011-04-08 07:30:21 +0000435 if (GV.hasName() && (GV.getName() == "llvm.global_ctors" ||
436 GV.getName() == "llvm.global_dtors")) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000437 Assert(!GV.hasInitializer() || GV.hasAppendingLinkage(),
438 "invalid linkage for intrinsic global variable", &GV);
Nick Lewycky466d0c12011-04-08 07:30:21 +0000439 // Don't worry about emitting an error for it not being an array,
440 // visitGlobalValue will complain on appending non-array.
Reid Klecknerfceb76f2014-05-16 20:39:27 +0000441 if (ArrayType *ATy = dyn_cast<ArrayType>(GV.getType()->getElementType())) {
Chris Lattner229907c2011-07-18 04:54:35 +0000442 StructType *STy = dyn_cast<StructType>(ATy->getElementType());
443 PointerType *FuncPtrTy =
Micah Villmow51e72462012-10-24 17:25:11 +0000444 FunctionType::get(Type::getVoidTy(*Context), false)->getPointerTo();
Reid Klecknerfceb76f2014-05-16 20:39:27 +0000445 // FIXME: Reject the 2-field form in LLVM 4.0.
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000446 Assert(STy &&
447 (STy->getNumElements() == 2 || STy->getNumElements() == 3) &&
448 STy->getTypeAtIndex(0u)->isIntegerTy(32) &&
449 STy->getTypeAtIndex(1) == FuncPtrTy,
450 "wrong type for intrinsic global variable", &GV);
Reid Klecknerfceb76f2014-05-16 20:39:27 +0000451 if (STy->getNumElements() == 3) {
452 Type *ETy = STy->getTypeAtIndex(2);
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000453 Assert(ETy->isPointerTy() &&
454 cast<PointerType>(ETy)->getElementType()->isIntegerTy(8),
455 "wrong type for intrinsic global variable", &GV);
Reid Klecknerfceb76f2014-05-16 20:39:27 +0000456 }
Nick Lewycky466d0c12011-04-08 07:30:21 +0000457 }
458 }
459
Rafael Espindola8bd2c222013-04-22 15:16:51 +0000460 if (GV.hasName() && (GV.getName() == "llvm.used" ||
Rafael Espindola9aadcc42013-07-19 18:44:51 +0000461 GV.getName() == "llvm.compiler.used")) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000462 Assert(!GV.hasInitializer() || GV.hasAppendingLinkage(),
463 "invalid linkage for intrinsic global variable", &GV);
Rafael Espindola74f2e462013-04-22 14:58:02 +0000464 Type *GVType = GV.getType()->getElementType();
465 if (ArrayType *ATy = dyn_cast<ArrayType>(GVType)) {
466 PointerType *PTy = dyn_cast<PointerType>(ATy->getElementType());
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000467 Assert(PTy, "wrong type for intrinsic global variable", &GV);
Rafael Espindola74f2e462013-04-22 14:58:02 +0000468 if (GV.hasInitializer()) {
Chandler Carruth043949d2014-01-19 02:22:18 +0000469 const Constant *Init = GV.getInitializer();
470 const ConstantArray *InitArray = dyn_cast<ConstantArray>(Init);
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000471 Assert(InitArray, "wrong initalizer for intrinsic global variable",
472 Init);
Rafael Espindola74f2e462013-04-22 14:58:02 +0000473 for (unsigned i = 0, e = InitArray->getNumOperands(); i != e; ++i) {
Rafael Espindolaeaf53272013-05-27 22:47:09 +0000474 Value *V = Init->getOperand(i)->stripPointerCastsNoFollowAliases();
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000475 Assert(isa<GlobalVariable>(V) || isa<Function>(V) ||
476 isa<GlobalAlias>(V),
477 "invalid llvm.used member", V);
478 Assert(V->hasName(), "members of llvm.used must be named", V);
Rafael Espindola74f2e462013-04-22 14:58:02 +0000479 }
480 }
481 }
482 }
483
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000484 Assert(!GV.hasDLLImportStorageClass() ||
485 (GV.isDeclaration() && GV.hasExternalLinkage()) ||
486 GV.hasAvailableExternallyLinkage(),
487 "Global is marked as dllimport, but not external", &GV);
Nico Rieck7157bb72014-01-14 15:22:47 +0000488
Matt Arsenault24b49c42013-07-31 17:49:08 +0000489 if (!GV.hasInitializer()) {
490 visitGlobalValue(GV);
491 return;
492 }
493
494 // Walk any aggregate initializers looking for bitcasts between address spaces
495 SmallPtrSet<const Value *, 4> Visited;
496 SmallVector<const Value *, 4> WorkStack;
497 WorkStack.push_back(cast<Value>(GV.getInitializer()));
498
499 while (!WorkStack.empty()) {
500 const Value *V = WorkStack.pop_back_val();
David Blaikie70573dc2014-11-19 07:49:26 +0000501 if (!Visited.insert(V).second)
Matt Arsenault24b49c42013-07-31 17:49:08 +0000502 continue;
503
504 if (const User *U = dyn_cast<User>(V)) {
Benjamin Kramer6cd780f2015-02-17 15:29:18 +0000505 WorkStack.append(U->op_begin(), U->op_end());
Matt Arsenault24b49c42013-07-31 17:49:08 +0000506 }
507
508 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
509 VerifyConstantExprBitcastType(CE);
510 if (Broken)
511 return;
512 }
513 }
514
Chris Lattnere3400652004-12-15 20:23:49 +0000515 visitGlobalValue(GV);
516}
517
Rafael Espindola64c1e182014-06-03 02:41:57 +0000518void Verifier::visitAliaseeSubExpr(const GlobalAlias &GA, const Constant &C) {
519 SmallPtrSet<const GlobalAlias*, 4> Visited;
520 Visited.insert(&GA);
521 visitAliaseeSubExpr(Visited, GA, C);
522}
523
Craig Topper71b7b682014-08-21 05:55:13 +0000524void Verifier::visitAliaseeSubExpr(SmallPtrSetImpl<const GlobalAlias*> &Visited,
Rafael Espindola64c1e182014-06-03 02:41:57 +0000525 const GlobalAlias &GA, const Constant &C) {
526 if (const auto *GV = dyn_cast<GlobalValue>(&C)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000527 Assert(!GV->isDeclaration(), "Alias must point to a definition", &GA);
Rafael Espindola64c1e182014-06-03 02:41:57 +0000528
529 if (const auto *GA2 = dyn_cast<GlobalAlias>(GV)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000530 Assert(Visited.insert(GA2).second, "Aliases cannot form a cycle", &GA);
Rafael Espindola64c1e182014-06-03 02:41:57 +0000531
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000532 Assert(!GA2->mayBeOverridden(), "Alias cannot point to a weak alias",
533 &GA);
Bob Wilson2f7cc012014-06-12 01:46:54 +0000534 } else {
535 // Only continue verifying subexpressions of GlobalAliases.
536 // Do not recurse into global initializers.
537 return;
Rafael Espindola64c1e182014-06-03 02:41:57 +0000538 }
539 }
540
541 if (const auto *CE = dyn_cast<ConstantExpr>(&C))
542 VerifyConstantExprBitcastType(CE);
543
544 for (const Use &U : C.operands()) {
545 Value *V = &*U;
546 if (const auto *GA2 = dyn_cast<GlobalAlias>(V))
547 visitAliaseeSubExpr(Visited, GA, *GA2->getAliasee());
548 else if (const auto *C2 = dyn_cast<Constant>(V))
549 visitAliaseeSubExpr(Visited, GA, *C2);
550 }
551}
552
Chandler Carruth043949d2014-01-19 02:22:18 +0000553void Verifier::visitGlobalAlias(const GlobalAlias &GA) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000554 Assert(!GA.getName().empty(), "Alias name cannot be empty!", &GA);
555 Assert(GlobalAlias::isValidLinkage(GA.getLinkage()),
556 "Alias should have private, internal, linkonce, weak, linkonce_odr, "
557 "weak_odr, or external linkage!",
558 &GA);
Rafael Espindola64c1e182014-06-03 02:41:57 +0000559 const Constant *Aliasee = GA.getAliasee();
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000560 Assert(Aliasee, "Aliasee cannot be NULL!", &GA);
561 Assert(GA.getType() == Aliasee->getType(),
562 "Alias and aliasee types should match!", &GA);
Anton Korobeynikova50eed42008-05-08 23:11:06 +0000563
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000564 Assert(isa<GlobalValue>(Aliasee) || isa<ConstantExpr>(Aliasee),
565 "Aliasee should be either GlobalValue or ConstantExpr", &GA);
Matt Arsenault828b5652013-07-20 17:46:05 +0000566
Rafael Espindola64c1e182014-06-03 02:41:57 +0000567 visitAliaseeSubExpr(GA, *Aliasee);
Anton Korobeynikov25b2e822008-03-22 08:36:14 +0000568
Anton Korobeynikova97b6942007-04-25 14:27:10 +0000569 visitGlobalValue(GA);
570}
571
Chandler Carruth043949d2014-01-19 02:22:18 +0000572void Verifier::visitNamedMDNode(const NamedMDNode &NMD) {
Duncan Sands76d62172010-04-29 16:10:30 +0000573 for (unsigned i = 0, e = NMD.getNumOperands(); i != e; ++i) {
Duncan P. N. Exon Smithde36e802014-11-11 21:30:22 +0000574 MDNode *MD = NMD.getOperand(i);
Duncan Sands76d62172010-04-29 16:10:30 +0000575 if (!MD)
576 continue;
577
Duncan P. N. Exon Smithf238c782015-03-24 17:18:03 +0000578 if (NMD.getName() == "llvm.dbg.cu") {
579 Assert(isa<MDCompileUnit>(MD), "invalid compile unit", &NMD, MD);
580 }
581
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000582 visitMDNode(*MD);
Duncan Sands76d62172010-04-29 16:10:30 +0000583 }
584}
585
Duncan P. N. Exon Smithac3ed7a2015-02-09 21:30:05 +0000586void Verifier::visitMDNode(const MDNode &MD) {
Duncan Sands76d62172010-04-29 16:10:30 +0000587 // Only visit each node once. Metadata can be mutually recursive, so this
588 // avoids infinite recursion here, as well as being an optimization.
David Blaikie70573dc2014-11-19 07:49:26 +0000589 if (!MDNodes.insert(&MD).second)
Duncan Sands76d62172010-04-29 16:10:30 +0000590 return;
591
Duncan P. N. Exon Smithb0a19ad2015-02-10 01:09:50 +0000592 switch (MD.getMetadataID()) {
593 default:
594 llvm_unreachable("Invalid MDNode subclass");
595 case Metadata::MDTupleKind:
596 break;
597#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
598 case Metadata::CLASS##Kind: \
599 visit##CLASS(cast<CLASS>(MD)); \
600 break;
601#include "llvm/IR/Metadata.def"
602 }
603
Duncan Sands76d62172010-04-29 16:10:30 +0000604 for (unsigned i = 0, e = MD.getNumOperands(); i != e; ++i) {
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000605 Metadata *Op = MD.getOperand(i);
Duncan Sands76d62172010-04-29 16:10:30 +0000606 if (!Op)
607 continue;
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000608 Assert(!isa<LocalAsMetadata>(Op), "Invalid operand for global metadata!",
609 &MD, Op);
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000610 if (auto *N = dyn_cast<MDNode>(Op)) {
611 visitMDNode(*N);
Duncan Sands76d62172010-04-29 16:10:30 +0000612 continue;
613 }
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000614 if (auto *V = dyn_cast<ValueAsMetadata>(Op)) {
615 visitValueAsMetadata(*V, nullptr);
616 continue;
617 }
Duncan Sands76d62172010-04-29 16:10:30 +0000618 }
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000619
620 // Check these last, so we diagnose problems in operands first.
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000621 Assert(!MD.isTemporary(), "Expected no forward declarations!", &MD);
622 Assert(MD.isResolved(), "All nodes should be resolved!", &MD);
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000623}
624
Duncan P. N. Exon Smithac3ed7a2015-02-09 21:30:05 +0000625void Verifier::visitValueAsMetadata(const ValueAsMetadata &MD, Function *F) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000626 Assert(MD.getValue(), "Expected valid value", &MD);
627 Assert(!MD.getValue()->getType()->isMetadataTy(),
628 "Unexpected metadata round-trip through values", &MD, MD.getValue());
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000629
630 auto *L = dyn_cast<LocalAsMetadata>(&MD);
631 if (!L)
632 return;
633
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000634 Assert(F, "function-local metadata used outside a function", L);
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000635
636 // If this was an instruction, bb, or argument, verify that it is in the
637 // function that we expect.
638 Function *ActualF = nullptr;
639 if (Instruction *I = dyn_cast<Instruction>(L->getValue())) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000640 Assert(I->getParent(), "function-local metadata not in basic block", L, I);
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000641 ActualF = I->getParent()->getParent();
642 } else if (BasicBlock *BB = dyn_cast<BasicBlock>(L->getValue()))
643 ActualF = BB->getParent();
644 else if (Argument *A = dyn_cast<Argument>(L->getValue()))
645 ActualF = A->getParent();
646 assert(ActualF && "Unimplemented function local metadata case!");
647
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000648 Assert(ActualF == F, "function-local metadata used in wrong function", L);
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000649}
650
Duncan P. N. Exon Smithac3ed7a2015-02-09 21:30:05 +0000651void Verifier::visitMetadataAsValue(const MetadataAsValue &MDV, Function *F) {
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +0000652 Metadata *MD = MDV.getMetadata();
653 if (auto *N = dyn_cast<MDNode>(MD)) {
654 visitMDNode(*N);
655 return;
656 }
657
658 // Only visit each node once. Metadata can be mutually recursive, so this
659 // avoids infinite recursion here, as well as being an optimization.
660 if (!MDNodes.insert(MD).second)
661 return;
662
663 if (auto *V = dyn_cast<ValueAsMetadata>(MD))
664 visitValueAsMetadata(*V, F);
Duncan Sands76d62172010-04-29 16:10:30 +0000665}
666
Duncan P. N. Exon Smith3d2afaa2015-03-27 17:29:58 +0000667/// \brief Check if a value can be a reference to a type.
668static bool isTypeRef(const Metadata *MD) {
669 if (!MD)
670 return true;
671 if (auto *S = dyn_cast<MDString>(MD))
672 return !S->getString().empty();
673 return isa<MDType>(MD);
674}
675
Duncan P. N. Exon Smith53855f02015-03-27 23:05:04 +0000676/// \brief Check if a value can be a ScopeRef.
677static bool isScopeRef(const Metadata *MD) {
678 if (!MD)
679 return true;
680 if (auto *S = dyn_cast<MDString>(MD))
681 return !S->getString().empty();
682 return isa<MDScope>(MD);
683}
684
Duncan P. N. Exon Smithf9b47752015-03-30 17:21:38 +0000685/// \brief Check if a value can be a debug info ref.
686static bool isDIRef(const Metadata *MD) {
687 if (!MD)
688 return true;
689 if (auto *S = dyn_cast<MDString>(MD))
690 return !S->getString().empty();
691 return isa<DebugNode>(MD);
692}
693
Duncan P. N. Exon Smith869db502015-03-30 16:19:15 +0000694template <class Ty>
695bool isValidMetadataArrayImpl(const MDTuple &N, bool AllowNull) {
696 for (Metadata *MD : N.operands()) {
697 if (MD) {
698 if (!isa<Ty>(MD))
699 return false;
700 } else {
701 if (!AllowNull)
702 return false;
703 }
704 }
705 return true;
706}
707
708template <class Ty>
709bool isValidMetadataArray(const MDTuple &N) {
710 return isValidMetadataArrayImpl<Ty>(N, /* AllowNull */ false);
711}
712
713template <class Ty>
714bool isValidMetadataNullArray(const MDTuple &N) {
715 return isValidMetadataArrayImpl<Ty>(N, /* AllowNull */ true);
716}
717
Duncan P. N. Exon Smith692bdb92015-02-10 01:32:56 +0000718void Verifier::visitMDLocation(const MDLocation &N) {
Duncan P. N. Exon Smith26489982015-03-26 22:05:04 +0000719 Assert(N.getRawScope() && isa<MDLocalScope>(N.getRawScope()),
720 "location requires a valid scope", &N, N.getRawScope());
721 if (auto *IA = N.getRawInlinedAt())
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000722 Assert(isa<MDLocation>(IA), "inlined-at should be a location", &N, IA);
Duncan P. N. Exon Smith692bdb92015-02-10 01:32:56 +0000723}
724
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000725void Verifier::visitGenericDebugNode(const GenericDebugNode &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000726 Assert(N.getTag(), "invalid tag", &N);
Duncan P. N. Exon Smithb0a19ad2015-02-10 01:09:50 +0000727}
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000728
Duncan P. N. Exon Smith53855f02015-03-27 23:05:04 +0000729void Verifier::visitMDScope(const MDScope &N) {
730 if (auto *F = N.getRawFile())
731 Assert(isa<MDFile>(F), "invalid file", &N, F);
732}
733
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000734void Verifier::visitMDSubrange(const MDSubrange &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000735 Assert(N.getTag() == dwarf::DW_TAG_subrange_type, "invalid tag", &N);
Duncan P. N. Exon Smith53855f02015-03-27 23:05:04 +0000736 Assert(N.getCount() >= -1, "invalid subrange count", &N);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000737}
738
739void Verifier::visitMDEnumerator(const MDEnumerator &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000740 Assert(N.getTag() == dwarf::DW_TAG_enumerator, "invalid tag", &N);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000741}
742
743void Verifier::visitMDBasicType(const MDBasicType &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000744 Assert(N.getTag() == dwarf::DW_TAG_base_type ||
745 N.getTag() == dwarf::DW_TAG_unspecified_type,
746 "invalid tag", &N);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000747}
748
Duncan P. N. Exon Smith53855f02015-03-27 23:05:04 +0000749void Verifier::visitMDDerivedTypeBase(const MDDerivedTypeBase &N) {
750 // Common scope checks.
751 visitMDScope(N);
752
753 Assert(isScopeRef(N.getScope()), "invalid scope", &N, N.getScope());
754 Assert(isTypeRef(N.getBaseType()), "invalid base type", &N, N.getBaseType());
755}
756
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000757void Verifier::visitMDDerivedType(const MDDerivedType &N) {
Duncan P. N. Exon Smith53855f02015-03-27 23:05:04 +0000758 // Common derived type checks.
759 visitMDDerivedTypeBase(N);
760
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000761 Assert(N.getTag() == dwarf::DW_TAG_typedef ||
762 N.getTag() == dwarf::DW_TAG_pointer_type ||
763 N.getTag() == dwarf::DW_TAG_ptr_to_member_type ||
764 N.getTag() == dwarf::DW_TAG_reference_type ||
765 N.getTag() == dwarf::DW_TAG_rvalue_reference_type ||
766 N.getTag() == dwarf::DW_TAG_const_type ||
767 N.getTag() == dwarf::DW_TAG_volatile_type ||
768 N.getTag() == dwarf::DW_TAG_restrict_type ||
769 N.getTag() == dwarf::DW_TAG_member ||
770 N.getTag() == dwarf::DW_TAG_inheritance ||
771 N.getTag() == dwarf::DW_TAG_friend,
772 "invalid tag", &N);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000773}
774
775void Verifier::visitMDCompositeType(const MDCompositeType &N) {
Duncan P. N. Exon Smith53855f02015-03-27 23:05:04 +0000776 // Common derived type checks.
777 visitMDDerivedTypeBase(N);
778
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000779 Assert(N.getTag() == dwarf::DW_TAG_array_type ||
780 N.getTag() == dwarf::DW_TAG_structure_type ||
781 N.getTag() == dwarf::DW_TAG_union_type ||
782 N.getTag() == dwarf::DW_TAG_enumeration_type ||
783 N.getTag() == dwarf::DW_TAG_subroutine_type ||
784 N.getTag() == dwarf::DW_TAG_class_type,
785 "invalid tag", &N);
Duncan P. N. Exon Smith53855f02015-03-27 23:05:04 +0000786
787 Assert(!N.getRawElements() || isa<MDTuple>(N.getRawElements()),
788 "invalid composite elements", &N, N.getRawElements());
789 Assert(isTypeRef(N.getRawVTableHolder()), "invalid vtable holder", &N,
790 N.getRawVTableHolder());
791 Assert(!N.getRawElements() || isa<MDTuple>(N.getRawElements()),
792 "invalid composite elements", &N, N.getRawElements());
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000793}
794
795void Verifier::visitMDSubroutineType(const MDSubroutineType &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000796 Assert(N.getTag() == dwarf::DW_TAG_subroutine_type, "invalid tag", &N);
Duncan P. N. Exon Smitha8b3a1f2015-03-28 02:43:53 +0000797 if (auto *Types = N.getRawTypeArray()) {
798 Assert(isa<MDTuple>(Types), "invalid composite elements", &N, Types);
799 for (Metadata *Ty : N.getTypeArray()->operands()) {
800 Assert(isTypeRef(Ty), "invalid subroutine type ref", &N, Types, Ty);
801 }
Duncan P. N. Exon Smith53855f02015-03-27 23:05:04 +0000802 }
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000803}
804
805void Verifier::visitMDFile(const MDFile &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000806 Assert(N.getTag() == dwarf::DW_TAG_file_type, "invalid tag", &N);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000807}
808
809void Verifier::visitMDCompileUnit(const MDCompileUnit &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000810 Assert(N.getTag() == dwarf::DW_TAG_compile_unit, "invalid tag", &N);
Duncan P. N. Exon Smith53855f02015-03-27 23:05:04 +0000811
812 if (auto *Array = N.getRawEnumTypes()) {
813 Assert(isa<MDTuple>(Array), "invalid enum list", &N, Array);
814 for (Metadata *Op : N.getEnumTypes()->operands()) {
815 auto *Enum = dyn_cast_or_null<MDCompositeType>(Op);
816 Assert(Enum && Enum->getTag() == dwarf::DW_TAG_enumeration_type,
817 "invalid enum type", &N, N.getEnumTypes(), Op);
818 }
819 }
820 if (auto *Array = N.getRawRetainedTypes()) {
821 Assert(isa<MDTuple>(Array), "invalid retained type list", &N, Array);
822 for (Metadata *Op : N.getRetainedTypes()->operands()) {
823 Assert(Op && isa<MDType>(Op), "invalid retained type", &N, Op);
824 }
825 }
826 if (auto *Array = N.getRawSubprograms()) {
827 Assert(isa<MDTuple>(Array), "invalid subprogram list", &N, Array);
828 for (Metadata *Op : N.getSubprograms()->operands()) {
829 Assert(Op && isa<MDSubprogram>(Op), "invalid subprogram ref", &N, Op);
830 }
831 }
832 if (auto *Array = N.getRawGlobalVariables()) {
833 Assert(isa<MDTuple>(Array), "invalid global variable list", &N, Array);
834 for (Metadata *Op : N.getGlobalVariables()->operands()) {
835 Assert(Op && isa<MDGlobalVariable>(Op), "invalid global variable ref", &N,
836 Op);
837 }
838 }
839 if (auto *Array = N.getRawImportedEntities()) {
840 Assert(isa<MDTuple>(Array), "invalid imported entity list", &N, Array);
841 for (Metadata *Op : N.getImportedEntities()->operands()) {
842 Assert(Op && isa<MDImportedEntity>(Op), "invalid imported entity ref", &N,
843 Op);
844 }
845 }
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000846}
847
848void Verifier::visitMDSubprogram(const MDSubprogram &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000849 Assert(N.getTag() == dwarf::DW_TAG_subprogram, "invalid tag", &N);
Duncan P. N. Exon Smith869db502015-03-30 16:19:15 +0000850 Assert(isScopeRef(N.getRawScope()), "invalid scope", &N, N.getRawScope());
851 if (auto *T = N.getRawType())
852 Assert(isa<MDSubroutineType>(T), "invalid subroutine type", &N, T);
853 Assert(isTypeRef(N.getRawContainingType()), "invalid containing type", &N,
854 N.getRawContainingType());
855 if (auto *RawF = N.getRawFunction()) {
856 auto *FMD = dyn_cast<ConstantAsMetadata>(RawF);
857 auto *F = FMD ? FMD->getValue() : nullptr;
858 auto *FT = F ? dyn_cast<PointerType>(F->getType()) : nullptr;
Duncan P. N. Exon Smith894b1e32015-03-30 17:04:06 +0000859 Assert(F && FT && isa<FunctionType>(FT->getElementType()),
860 "invalid function", &N, F, FT);
Duncan P. N. Exon Smith869db502015-03-30 16:19:15 +0000861 }
862 if (N.getRawTemplateParams()) {
863 auto *Params = dyn_cast<MDTuple>(N.getRawTemplateParams());
864 Assert(Params, "invalid template params", &N, Params);
865 for (Metadata *Op : Params->operands()) {
866 Assert(Op && isa<MDTemplateParameter>(Op), "invalid template parameter",
867 &N, Params, Op);
868 }
869 }
870 if (auto *S = N.getRawDeclaration()) {
871 Assert(isa<MDSubprogram>(S) && !cast<MDSubprogram>(S)->isDefinition(),
872 "invalid subprogram declaration", &N, S);
873 }
874 if (N.getRawVariables()) {
875 auto *Vars = dyn_cast<MDTuple>(N.getRawVariables());
876 Assert(Vars, "invalid variable list", &N, Vars);
877 for (Metadata *Op : Vars->operands()) {
878 Assert(Op && isa<MDLocalVariable>(Op), "invalid local variable", &N, Vars,
879 Op);
880 }
881 }
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000882}
883
Duncan P. N. Exon Smith0e202b92015-03-30 16:37:48 +0000884void Verifier::visitMDLexicalBlockBase(const MDLexicalBlockBase &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000885 Assert(N.getTag() == dwarf::DW_TAG_lexical_block, "invalid tag", &N);
Duncan P. N. Exon Smith0e202b92015-03-30 16:37:48 +0000886 Assert(N.getRawScope() && isa<MDLocalScope>(N.getRawScope()),
887 "invalid local scope", &N, N.getRawScope());
888}
889
890void Verifier::visitMDLexicalBlock(const MDLexicalBlock &N) {
891 visitMDLexicalBlockBase(N);
892
893 Assert(N.getLine() || !N.getColumn(),
894 "cannot have column info without line info", &N);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000895}
896
897void Verifier::visitMDLexicalBlockFile(const MDLexicalBlockFile &N) {
Duncan P. N. Exon Smith0e202b92015-03-30 16:37:48 +0000898 visitMDLexicalBlockBase(N);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000899}
900
901void Verifier::visitMDNamespace(const MDNamespace &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000902 Assert(N.getTag() == dwarf::DW_TAG_namespace, "invalid tag", &N);
Duncan P. N. Exon Smithf9b47752015-03-30 17:21:38 +0000903 if (auto *S = N.getRawScope())
904 Assert(isa<MDScope>(S), "invalid scope ref", &N, S);
905}
906
907void Verifier::visitMDTemplateParameter(const MDTemplateParameter &N) {
908 Assert(isTypeRef(N.getType()), "invalid type ref", &N, N.getType());
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000909}
910
911void Verifier::visitMDTemplateTypeParameter(const MDTemplateTypeParameter &N) {
Duncan P. N. Exon Smithf9b47752015-03-30 17:21:38 +0000912 visitMDTemplateParameter(N);
913
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000914 Assert(N.getTag() == dwarf::DW_TAG_template_type_parameter, "invalid tag",
915 &N);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000916}
917
918void Verifier::visitMDTemplateValueParameter(
919 const MDTemplateValueParameter &N) {
Duncan P. N. Exon Smithf9b47752015-03-30 17:21:38 +0000920 visitMDTemplateParameter(N);
921
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000922 Assert(N.getTag() == dwarf::DW_TAG_template_value_parameter ||
923 N.getTag() == dwarf::DW_TAG_GNU_template_template_param ||
924 N.getTag() == dwarf::DW_TAG_GNU_template_parameter_pack,
925 "invalid tag", &N);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000926}
927
Duncan P. N. Exon Smith3d2afaa2015-03-27 17:29:58 +0000928void Verifier::visitMDVariable(const MDVariable &N) {
929 if (auto *S = N.getRawScope())
930 Assert(isa<MDScope>(S), "invalid scope", &N, S);
931 Assert(isTypeRef(N.getRawType()), "invalid type ref", &N, N.getRawType());
932 if (auto *F = N.getRawFile())
933 Assert(isa<MDFile>(F), "invalid file", &N, F);
934}
935
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000936void Verifier::visitMDGlobalVariable(const MDGlobalVariable &N) {
Duncan P. N. Exon Smith3d2afaa2015-03-27 17:29:58 +0000937 // Checks common to all variables.
938 visitMDVariable(N);
939
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000940 Assert(N.getTag() == dwarf::DW_TAG_variable, "invalid tag", &N);
Duncan P. N. Exon Smith3d2afaa2015-03-27 17:29:58 +0000941 if (auto *V = N.getRawVariable()) {
942 Assert(isa<ConstantAsMetadata>(V) &&
943 !isa<Function>(cast<ConstantAsMetadata>(V)->getValue()),
944 "invalid global varaible ref", &N, V);
945 }
946 if (auto *Member = N.getRawStaticDataMemberDeclaration()) {
947 Assert(isa<MDDerivedType>(Member), "invalid static data member declaration",
948 &N, Member);
949 }
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000950}
951
952void Verifier::visitMDLocalVariable(const MDLocalVariable &N) {
Duncan P. N. Exon Smith3d2afaa2015-03-27 17:29:58 +0000953 // Checks common to all variables.
954 visitMDVariable(N);
955
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000956 Assert(N.getTag() == dwarf::DW_TAG_auto_variable ||
957 N.getTag() == dwarf::DW_TAG_arg_variable,
958 "invalid tag", &N);
Duncan P. N. Exon Smith3d2afaa2015-03-27 17:29:58 +0000959 Assert(N.getRawScope() && isa<MDLocalScope>(N.getRawScope()),
960 "local variable requires a valid scope", &N, N.getRawScope());
961 if (auto *IA = N.getRawInlinedAt())
962 Assert(isa<MDLocation>(IA), "local variable requires a valid scope", &N,
963 IA);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000964}
965
966void Verifier::visitMDExpression(const MDExpression &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000967 Assert(N.isValid(), "invalid expression", &N);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000968}
969
970void Verifier::visitMDObjCProperty(const MDObjCProperty &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000971 Assert(N.getTag() == dwarf::DW_TAG_APPLE_property, "invalid tag", &N);
Duncan P. N. Exon Smithf9b47752015-03-30 17:21:38 +0000972 if (auto *T = N.getRawType())
973 Assert(isa<MDType>(T), "invalid type ref", &N, T);
974 if (auto *F = N.getRawFile())
975 Assert(isa<MDFile>(F), "invalid file", &N, F);
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000976}
977
978void Verifier::visitMDImportedEntity(const MDImportedEntity &N) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000979 Assert(N.getTag() == dwarf::DW_TAG_imported_module ||
980 N.getTag() == dwarf::DW_TAG_imported_declaration,
981 "invalid tag", &N);
Duncan P. N. Exon Smithf9b47752015-03-30 17:21:38 +0000982 if (auto *S = N.getRawScope())
983 Assert(isa<MDScope>(S), "invalid scope for imported entity", &N, S);
984 Assert(isDIRef(N.getEntity()), "invalid imported entity", &N, N.getEntity());
Duncan P. N. Exon Smithe4725be2015-02-10 01:40:40 +0000985}
Duncan P. N. Exon Smithb0a19ad2015-02-10 01:09:50 +0000986
David Majnemerdad0a642014-06-27 18:19:56 +0000987void Verifier::visitComdat(const Comdat &C) {
David Majnemerebc74112014-07-13 04:56:11 +0000988 // The Module is invalid if the GlobalValue has private linkage. Entities
989 // with private linkage don't have entries in the symbol table.
David Majnemerab457812015-02-20 19:58:48 +0000990 if (const GlobalValue *GV = M->getNamedValue(C.getName()))
Benjamin Kramerf027ad72015-03-07 21:15:40 +0000991 Assert(!GV->hasPrivateLinkage(), "comdat global value has private linkage",
992 GV);
David Majnemerdad0a642014-06-27 18:19:56 +0000993}
994
Chandler Carruth043949d2014-01-19 02:22:18 +0000995void Verifier::visitModuleIdents(const Module &M) {
Rafael Espindola0018a592013-10-16 01:49:05 +0000996 const NamedMDNode *Idents = M.getNamedMetadata("llvm.ident");
997 if (!Idents)
998 return;
999
1000 // llvm.ident takes a list of metadata entry. Each entry has only one string.
1001 // Scan each llvm.ident entry and make sure that this requirement is met.
1002 for (unsigned i = 0, e = Idents->getNumOperands(); i != e; ++i) {
Duncan P. N. Exon Smithde36e802014-11-11 21:30:22 +00001003 const MDNode *N = Idents->getOperand(i);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001004 Assert(N->getNumOperands() == 1,
1005 "incorrect number of operands in llvm.ident metadata", N);
1006 Assert(dyn_cast_or_null<MDString>(N->getOperand(0)),
1007 ("invalid value for llvm.ident metadata entry operand"
1008 "(the operand should be a string)"),
1009 N->getOperand(0));
Rafael Espindola0018a592013-10-16 01:49:05 +00001010 }
1011}
1012
Chandler Carruth043949d2014-01-19 02:22:18 +00001013void Verifier::visitModuleFlags(const Module &M) {
Daniel Dunbar25c4b572013-01-15 01:22:53 +00001014 const NamedMDNode *Flags = M.getModuleFlagsMetadata();
1015 if (!Flags) return;
1016
Daniel Dunbarc36547d2013-01-15 20:52:06 +00001017 // Scan each flag, and track the flags and requirements.
Chandler Carruth043949d2014-01-19 02:22:18 +00001018 DenseMap<const MDString*, const MDNode*> SeenIDs;
1019 SmallVector<const MDNode*, 16> Requirements;
Daniel Dunbar25c4b572013-01-15 01:22:53 +00001020 for (unsigned I = 0, E = Flags->getNumOperands(); I != E; ++I) {
Duncan P. N. Exon Smithde36e802014-11-11 21:30:22 +00001021 visitModuleFlag(Flags->getOperand(I), SeenIDs, Requirements);
Daniel Dunbarc36547d2013-01-15 20:52:06 +00001022 }
1023
1024 // Validate that the requirements in the module are valid.
1025 for (unsigned I = 0, E = Requirements.size(); I != E; ++I) {
Chandler Carruth043949d2014-01-19 02:22:18 +00001026 const MDNode *Requirement = Requirements[I];
1027 const MDString *Flag = cast<MDString>(Requirement->getOperand(0));
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +00001028 const Metadata *ReqValue = Requirement->getOperand(1);
Daniel Dunbarc36547d2013-01-15 20:52:06 +00001029
Chandler Carruth043949d2014-01-19 02:22:18 +00001030 const MDNode *Op = SeenIDs.lookup(Flag);
Daniel Dunbarc36547d2013-01-15 20:52:06 +00001031 if (!Op) {
1032 CheckFailed("invalid requirement on flag, flag is not present in module",
1033 Flag);
1034 continue;
1035 }
1036
1037 if (Op->getOperand(2) != ReqValue) {
1038 CheckFailed(("invalid requirement on flag, "
1039 "flag does not have the required value"),
1040 Flag);
1041 continue;
1042 }
Daniel Dunbar25c4b572013-01-15 01:22:53 +00001043 }
1044}
1045
Chandler Carruth043949d2014-01-19 02:22:18 +00001046void
1047Verifier::visitModuleFlag(const MDNode *Op,
1048 DenseMap<const MDString *, const MDNode *> &SeenIDs,
1049 SmallVectorImpl<const MDNode *> &Requirements) {
Daniel Dunbar25c4b572013-01-15 01:22:53 +00001050 // Each module flag should have three arguments, the merge behavior (a
1051 // constant int), the flag ID (an MDString), and the value.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001052 Assert(Op->getNumOperands() == 3,
1053 "incorrect number of operands in module flag", Op);
Alexey Samsonovaf023ad2014-09-08 19:16:28 +00001054 Module::ModFlagBehavior MFB;
1055 if (!Module::isValidModFlagBehavior(Op->getOperand(0), MFB)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001056 Assert(
David Majnemerd7677e72015-02-11 09:13:06 +00001057 mdconst::dyn_extract_or_null<ConstantInt>(Op->getOperand(0)),
Alexey Samsonovaf023ad2014-09-08 19:16:28 +00001058 "invalid behavior operand in module flag (expected constant integer)",
1059 Op->getOperand(0));
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001060 Assert(false,
1061 "invalid behavior operand in module flag (unexpected constant)",
1062 Op->getOperand(0));
Alexey Samsonovaf023ad2014-09-08 19:16:28 +00001063 }
David Majnemer04b4ed32015-02-16 08:14:22 +00001064 MDString *ID = dyn_cast_or_null<MDString>(Op->getOperand(1));
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001065 Assert(ID, "invalid ID operand in module flag (expected metadata string)",
1066 Op->getOperand(1));
Daniel Dunbar25c4b572013-01-15 01:22:53 +00001067
Daniel Dunbard77d9fb2013-01-16 21:38:56 +00001068 // Sanity check the values for behaviors with additional requirements.
Alexey Samsonovaf023ad2014-09-08 19:16:28 +00001069 switch (MFB) {
Daniel Dunbard77d9fb2013-01-16 21:38:56 +00001070 case Module::Error:
1071 case Module::Warning:
1072 case Module::Override:
1073 // These behavior types accept any value.
1074 break;
1075
1076 case Module::Require: {
Daniel Dunbar25c4b572013-01-15 01:22:53 +00001077 // The value should itself be an MDNode with two operands, a flag ID (an
1078 // MDString), and a value.
1079 MDNode *Value = dyn_cast<MDNode>(Op->getOperand(2));
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001080 Assert(Value && Value->getNumOperands() == 2,
1081 "invalid value for 'require' module flag (expected metadata pair)",
1082 Op->getOperand(2));
1083 Assert(isa<MDString>(Value->getOperand(0)),
1084 ("invalid value for 'require' module flag "
1085 "(first value operand should be a string)"),
1086 Value->getOperand(0));
Daniel Dunbarc36547d2013-01-15 20:52:06 +00001087
1088 // Append it to the list of requirements, to check once all module flags are
1089 // scanned.
1090 Requirements.push_back(Value);
Daniel Dunbard77d9fb2013-01-16 21:38:56 +00001091 break;
1092 }
1093
1094 case Module::Append:
1095 case Module::AppendUnique: {
1096 // These behavior types require the operand be an MDNode.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001097 Assert(isa<MDNode>(Op->getOperand(2)),
1098 "invalid value for 'append'-type module flag "
1099 "(expected a metadata node)",
1100 Op->getOperand(2));
Daniel Dunbard77d9fb2013-01-16 21:38:56 +00001101 break;
1102 }
1103 }
1104
1105 // Unless this is a "requires" flag, check the ID is unique.
Alexey Samsonovaf023ad2014-09-08 19:16:28 +00001106 if (MFB != Module::Require) {
Daniel Dunbard77d9fb2013-01-16 21:38:56 +00001107 bool Inserted = SeenIDs.insert(std::make_pair(ID, Op)).second;
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001108 Assert(Inserted,
1109 "module flag identifiers must be unique (or of 'require' type)", ID);
Daniel Dunbar25c4b572013-01-15 01:22:53 +00001110 }
1111}
1112
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001113void Verifier::VerifyAttributeTypes(AttributeSet Attrs, unsigned Idx,
Nick Lewyckyc2ec0722013-07-06 00:29:58 +00001114 bool isFunction, const Value *V) {
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001115 unsigned Slot = ~0U;
1116 for (unsigned I = 0, E = Attrs.getNumSlots(); I != E; ++I)
1117 if (Attrs.getSlotIndex(I) == Idx) {
1118 Slot = I;
1119 break;
1120 }
1121
1122 assert(Slot != ~0U && "Attribute set inconsistency!");
1123
1124 for (AttributeSet::iterator I = Attrs.begin(Slot), E = Attrs.end(Slot);
1125 I != E; ++I) {
1126 if (I->isStringAttribute())
1127 continue;
1128
1129 if (I->getKindAsEnum() == Attribute::NoReturn ||
1130 I->getKindAsEnum() == Attribute::NoUnwind ||
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001131 I->getKindAsEnum() == Attribute::NoInline ||
1132 I->getKindAsEnum() == Attribute::AlwaysInline ||
1133 I->getKindAsEnum() == Attribute::OptimizeForSize ||
1134 I->getKindAsEnum() == Attribute::StackProtect ||
1135 I->getKindAsEnum() == Attribute::StackProtectReq ||
1136 I->getKindAsEnum() == Attribute::StackProtectStrong ||
1137 I->getKindAsEnum() == Attribute::NoRedZone ||
1138 I->getKindAsEnum() == Attribute::NoImplicitFloat ||
1139 I->getKindAsEnum() == Attribute::Naked ||
1140 I->getKindAsEnum() == Attribute::InlineHint ||
1141 I->getKindAsEnum() == Attribute::StackAlignment ||
1142 I->getKindAsEnum() == Attribute::UWTable ||
1143 I->getKindAsEnum() == Attribute::NonLazyBind ||
1144 I->getKindAsEnum() == Attribute::ReturnsTwice ||
1145 I->getKindAsEnum() == Attribute::SanitizeAddress ||
1146 I->getKindAsEnum() == Attribute::SanitizeThread ||
1147 I->getKindAsEnum() == Attribute::SanitizeMemory ||
1148 I->getKindAsEnum() == Attribute::MinSize ||
1149 I->getKindAsEnum() == Attribute::NoDuplicate ||
Michael Gottesman41748d72013-06-27 00:25:01 +00001150 I->getKindAsEnum() == Attribute::Builtin ||
Diego Novilloc6399532013-05-24 12:26:52 +00001151 I->getKindAsEnum() == Attribute::NoBuiltin ||
Andrea Di Biagio377496b2013-08-23 11:53:55 +00001152 I->getKindAsEnum() == Attribute::Cold ||
Tom Roeder44cb65f2014-06-05 19:29:43 +00001153 I->getKindAsEnum() == Attribute::OptimizeNone ||
1154 I->getKindAsEnum() == Attribute::JumpTable) {
Tobias Grossereffd02c2013-07-02 03:28:10 +00001155 if (!isFunction) {
Nick Lewyckyc2ec0722013-07-06 00:29:58 +00001156 CheckFailed("Attribute '" + I->getAsString() +
1157 "' only applies to functions!", V);
1158 return;
1159 }
1160 } else if (I->getKindAsEnum() == Attribute::ReadOnly ||
1161 I->getKindAsEnum() == Attribute::ReadNone) {
1162 if (Idx == 0) {
1163 CheckFailed("Attribute '" + I->getAsString() +
1164 "' does not apply to function returns");
1165 return;
Tobias Grossereffd02c2013-07-02 03:28:10 +00001166 }
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001167 } else if (isFunction) {
Nick Lewyckyc2ec0722013-07-06 00:29:58 +00001168 CheckFailed("Attribute '" + I->getAsString() +
1169 "' does not apply to functions!", V);
1170 return;
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001171 }
1172 }
1173}
1174
Duncan Sandsc3a79922009-06-11 08:11:03 +00001175// VerifyParameterAttrs - Check the given attributes for an argument or return
Duncan Sands0009c442008-01-12 16:42:01 +00001176// value of the specified type. The value V is printed in error messages.
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001177void Verifier::VerifyParameterAttrs(AttributeSet Attrs, unsigned Idx, Type *Ty,
Duncan Sandsc3a79922009-06-11 08:11:03 +00001178 bool isReturnValue, const Value *V) {
Bill Wendlinge1835972013-01-21 23:03:18 +00001179 if (!Attrs.hasAttributes(Idx))
Duncan Sands0009c442008-01-12 16:42:01 +00001180 return;
1181
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001182 VerifyAttributeTypes(Attrs, Idx, false, V);
Duncan Sandsc3a79922009-06-11 08:11:03 +00001183
Bill Wendling908126a2012-10-09 09:51:10 +00001184 if (isReturnValue)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001185 Assert(!Attrs.hasAttribute(Idx, Attribute::ByVal) &&
1186 !Attrs.hasAttribute(Idx, Attribute::Nest) &&
1187 !Attrs.hasAttribute(Idx, Attribute::StructRet) &&
1188 !Attrs.hasAttribute(Idx, Attribute::NoCapture) &&
1189 !Attrs.hasAttribute(Idx, Attribute::Returned) &&
1190 !Attrs.hasAttribute(Idx, Attribute::InAlloca),
1191 "Attributes 'byval', 'inalloca', 'nest', 'sret', 'nocapture', and "
1192 "'returned' do not apply to return values!",
1193 V);
Duncan Sandsc3a79922009-06-11 08:11:03 +00001194
Reid Klecknera534a382013-12-19 02:14:12 +00001195 // Check for mutually incompatible attributes. Only inreg is compatible with
1196 // sret.
1197 unsigned AttrCount = 0;
1198 AttrCount += Attrs.hasAttribute(Idx, Attribute::ByVal);
1199 AttrCount += Attrs.hasAttribute(Idx, Attribute::InAlloca);
1200 AttrCount += Attrs.hasAttribute(Idx, Attribute::StructRet) ||
1201 Attrs.hasAttribute(Idx, Attribute::InReg);
1202 AttrCount += Attrs.hasAttribute(Idx, Attribute::Nest);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001203 Assert(AttrCount <= 1, "Attributes 'byval', 'inalloca', 'inreg', 'nest', "
1204 "and 'sret' are incompatible!",
1205 V);
Bill Wendling9864a652012-10-09 20:11:19 +00001206
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001207 Assert(!(Attrs.hasAttribute(Idx, Attribute::InAlloca) &&
1208 Attrs.hasAttribute(Idx, Attribute::ReadOnly)),
1209 "Attributes "
1210 "'inalloca and readonly' are incompatible!",
1211 V);
Bill Wendling9864a652012-10-09 20:11:19 +00001212
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001213 Assert(!(Attrs.hasAttribute(Idx, Attribute::StructRet) &&
1214 Attrs.hasAttribute(Idx, Attribute::Returned)),
1215 "Attributes "
1216 "'sret and returned' are incompatible!",
1217 V);
Stephen Lin6c70dc72013-04-23 16:31:56 +00001218
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001219 Assert(!(Attrs.hasAttribute(Idx, Attribute::ZExt) &&
1220 Attrs.hasAttribute(Idx, Attribute::SExt)),
1221 "Attributes "
1222 "'zeroext and signext' are incompatible!",
1223 V);
Bill Wendling9864a652012-10-09 20:11:19 +00001224
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001225 Assert(!(Attrs.hasAttribute(Idx, Attribute::ReadNone) &&
1226 Attrs.hasAttribute(Idx, Attribute::ReadOnly)),
1227 "Attributes "
1228 "'readnone and readonly' are incompatible!",
1229 V);
Bill Wendling9864a652012-10-09 20:11:19 +00001230
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001231 Assert(!(Attrs.hasAttribute(Idx, Attribute::NoInline) &&
1232 Attrs.hasAttribute(Idx, Attribute::AlwaysInline)),
1233 "Attributes "
1234 "'noinline and alwaysinline' are incompatible!",
1235 V);
Duncan Sands0009c442008-01-12 16:42:01 +00001236
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001237 Assert(!AttrBuilder(Attrs, Idx)
1238 .hasAttributes(AttributeFuncs::typeIncompatible(Ty, Idx), Idx),
1239 "Wrong types for attribute: " +
1240 AttributeFuncs::typeIncompatible(Ty, Idx).getAsString(Idx),
1241 V);
Dan Gohman6d618722008-08-27 14:48:06 +00001242
Reid Klecknera534a382013-12-19 02:14:12 +00001243 if (PointerType *PTy = dyn_cast<PointerType>(Ty)) {
Owen Anderson08f46e12015-03-13 06:41:26 +00001244 SmallPtrSet<const Type*, 4> Visited;
1245 if (!PTy->getElementType()->isSized(&Visited)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001246 Assert(!Attrs.hasAttribute(Idx, Attribute::ByVal) &&
1247 !Attrs.hasAttribute(Idx, Attribute::InAlloca),
1248 "Attributes 'byval' and 'inalloca' do not support unsized types!",
1249 V);
Reid Klecknera534a382013-12-19 02:14:12 +00001250 }
1251 } else {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001252 Assert(!Attrs.hasAttribute(Idx, Attribute::ByVal),
1253 "Attribute 'byval' only applies to parameters with pointer type!",
1254 V);
Reid Klecknera534a382013-12-19 02:14:12 +00001255 }
Duncan Sands0009c442008-01-12 16:42:01 +00001256}
1257
1258// VerifyFunctionAttrs - Check parameter attributes against a function type.
Duncan Sands8c582282007-12-21 19:19:01 +00001259// The value V is printed in error messages.
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001260void Verifier::VerifyFunctionAttrs(FunctionType *FT, AttributeSet Attrs,
Duncan Sands0009c442008-01-12 16:42:01 +00001261 const Value *V) {
Chris Lattner8a923e72008-03-12 17:45:29 +00001262 if (Attrs.isEmpty())
Duncan Sands8c582282007-12-21 19:19:01 +00001263 return;
1264
Duncan Sands8c582282007-12-21 19:19:01 +00001265 bool SawNest = false;
Stephen Linb8bd2322013-04-20 05:14:40 +00001266 bool SawReturned = false;
Reid Kleckner79418562014-05-09 22:32:13 +00001267 bool SawSRet = false;
Duncan Sands8c582282007-12-21 19:19:01 +00001268
Chris Lattner8a923e72008-03-12 17:45:29 +00001269 for (unsigned i = 0, e = Attrs.getNumSlots(); i != e; ++i) {
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001270 unsigned Idx = Attrs.getSlotIndex(i);
Duncan Sands8c582282007-12-21 19:19:01 +00001271
Chris Lattner229907c2011-07-18 04:54:35 +00001272 Type *Ty;
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001273 if (Idx == 0)
Chris Lattner8a923e72008-03-12 17:45:29 +00001274 Ty = FT->getReturnType();
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001275 else if (Idx-1 < FT->getNumParams())
1276 Ty = FT->getParamType(Idx-1);
Chris Lattner8a923e72008-03-12 17:45:29 +00001277 else
Duncan Sandsc3a79922009-06-11 08:11:03 +00001278 break; // VarArgs attributes, verified elsewhere.
1279
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001280 VerifyParameterAttrs(Attrs, Idx, Ty, Idx == 0, V);
Duncan Sands8c582282007-12-21 19:19:01 +00001281
Stephen Linb8bd2322013-04-20 05:14:40 +00001282 if (Idx == 0)
1283 continue;
1284
1285 if (Attrs.hasAttribute(Idx, Attribute::Nest)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001286 Assert(!SawNest, "More than one parameter has attribute nest!", V);
Duncan Sands8c582282007-12-21 19:19:01 +00001287 SawNest = true;
1288 }
1289
Stephen Linb8bd2322013-04-20 05:14:40 +00001290 if (Attrs.hasAttribute(Idx, Attribute::Returned)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001291 Assert(!SawReturned, "More than one parameter has attribute returned!",
1292 V);
1293 Assert(Ty->canLosslesslyBitCastTo(FT->getReturnType()),
1294 "Incompatible "
1295 "argument and return types for 'returned' attribute",
1296 V);
Stephen Linb8bd2322013-04-20 05:14:40 +00001297 SawReturned = true;
1298 }
1299
Reid Kleckner79418562014-05-09 22:32:13 +00001300 if (Attrs.hasAttribute(Idx, Attribute::StructRet)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001301 Assert(!SawSRet, "Cannot have multiple 'sret' parameters!", V);
1302 Assert(Idx == 1 || Idx == 2,
1303 "Attribute 'sret' is not on first or second parameter!", V);
Reid Kleckner79418562014-05-09 22:32:13 +00001304 SawSRet = true;
1305 }
Reid Kleckner60d3a832014-01-16 22:59:24 +00001306
1307 if (Attrs.hasAttribute(Idx, Attribute::InAlloca)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001308 Assert(Idx == FT->getNumParams(), "inalloca isn't on the last parameter!",
1309 V);
Reid Kleckner60d3a832014-01-16 22:59:24 +00001310 }
Duncan Sands8c582282007-12-21 19:19:01 +00001311 }
Devang Patel9cc98122008-10-01 23:41:25 +00001312
Bill Wendling77543892013-01-18 21:11:39 +00001313 if (!Attrs.hasAttributes(AttributeSet::FunctionIndex))
1314 return;
1315
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001316 VerifyAttributeTypes(Attrs, AttributeSet::FunctionIndex, true, V);
Bill Wendling9864a652012-10-09 20:11:19 +00001317
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001318 Assert(
1319 !(Attrs.hasAttribute(AttributeSet::FunctionIndex, Attribute::ReadNone) &&
1320 Attrs.hasAttribute(AttributeSet::FunctionIndex, Attribute::ReadOnly)),
1321 "Attributes 'readnone and readonly' are incompatible!", V);
Bill Wendling9864a652012-10-09 20:11:19 +00001322
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001323 Assert(
1324 !(Attrs.hasAttribute(AttributeSet::FunctionIndex, Attribute::NoInline) &&
1325 Attrs.hasAttribute(AttributeSet::FunctionIndex,
1326 Attribute::AlwaysInline)),
1327 "Attributes 'noinline and alwaysinline' are incompatible!", V);
Andrea Di Biagio377496b2013-08-23 11:53:55 +00001328
1329 if (Attrs.hasAttribute(AttributeSet::FunctionIndex,
1330 Attribute::OptimizeNone)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001331 Assert(Attrs.hasAttribute(AttributeSet::FunctionIndex, Attribute::NoInline),
1332 "Attribute 'optnone' requires 'noinline'!", V);
Andrea Di Biagio377496b2013-08-23 11:53:55 +00001333
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001334 Assert(!Attrs.hasAttribute(AttributeSet::FunctionIndex,
1335 Attribute::OptimizeForSize),
1336 "Attributes 'optsize and optnone' are incompatible!", V);
Andrea Di Biagio377496b2013-08-23 11:53:55 +00001337
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001338 Assert(!Attrs.hasAttribute(AttributeSet::FunctionIndex, Attribute::MinSize),
1339 "Attributes 'minsize and optnone' are incompatible!", V);
Andrea Di Biagio377496b2013-08-23 11:53:55 +00001340 }
Tom Roeder44cb65f2014-06-05 19:29:43 +00001341
1342 if (Attrs.hasAttribute(AttributeSet::FunctionIndex,
1343 Attribute::JumpTable)) {
1344 const GlobalValue *GV = cast<GlobalValue>(V);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001345 Assert(GV->hasUnnamedAddr(),
1346 "Attribute 'jumptable' requires 'unnamed_addr'", V);
Tom Roeder44cb65f2014-06-05 19:29:43 +00001347 }
Duncan Sands8c582282007-12-21 19:19:01 +00001348}
1349
Matt Arsenault24b49c42013-07-31 17:49:08 +00001350void Verifier::VerifyConstantExprBitcastType(const ConstantExpr *CE) {
Rafael Espindolaa4a94f12014-12-16 19:29:29 +00001351 if (CE->getOpcode() != Instruction::BitCast)
1352 return;
1353
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001354 Assert(CastInst::castIsValid(Instruction::BitCast, CE->getOperand(0),
1355 CE->getType()),
1356 "Invalid bitcast", CE);
Matt Arsenault24b49c42013-07-31 17:49:08 +00001357}
1358
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001359bool Verifier::VerifyAttributeCount(AttributeSet Attrs, unsigned Params) {
Bill Wendling0aed1132013-01-30 06:54:41 +00001360 if (Attrs.getNumSlots() == 0)
Devang Patel82fed672008-09-23 22:35:17 +00001361 return true;
Nick Lewycky3fc89802009-09-07 20:44:51 +00001362
Devang Patel82fed672008-09-23 22:35:17 +00001363 unsigned LastSlot = Attrs.getNumSlots() - 1;
Bill Wendling25e65a62013-01-25 21:30:53 +00001364 unsigned LastIndex = Attrs.getSlotIndex(LastSlot);
Devang Patel82fed672008-09-23 22:35:17 +00001365 if (LastIndex <= Params
Bill Wendling25e65a62013-01-25 21:30:53 +00001366 || (LastIndex == AttributeSet::FunctionIndex
1367 && (LastSlot == 0 || Attrs.getSlotIndex(LastSlot - 1) <= Params)))
Devang Patel82fed672008-09-23 22:35:17 +00001368 return true;
Matt Arsenaultc4c92262013-07-20 17:46:00 +00001369
Devang Patel82fed672008-09-23 22:35:17 +00001370 return false;
1371}
Nick Lewycky3fc89802009-09-07 20:44:51 +00001372
Philip Reames1ffa9372015-01-30 23:28:05 +00001373/// \brief Verify that statepoint intrinsic is well formed.
Philip Reames0285c742015-02-03 23:18:47 +00001374void Verifier::VerifyStatepoint(ImmutableCallSite CS) {
1375 assert(CS.getCalledFunction() &&
1376 CS.getCalledFunction()->getIntrinsicID() ==
1377 Intrinsic::experimental_gc_statepoint);
Philip Reames1ffa9372015-01-30 23:28:05 +00001378
Philip Reames0285c742015-02-03 23:18:47 +00001379 const Instruction &CI = *CS.getInstruction();
1380
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001381 Assert(!CS.doesNotAccessMemory() && !CS.onlyReadsMemory(),
1382 "gc.statepoint must read and write memory to preserve "
1383 "reordering restrictions required by safepoint semantics",
1384 &CI);
1385
Philip Reames0285c742015-02-03 23:18:47 +00001386 const Value *Target = CS.getArgument(0);
Philip Reames1ffa9372015-01-30 23:28:05 +00001387 const PointerType *PT = dyn_cast<PointerType>(Target->getType());
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001388 Assert(PT && PT->getElementType()->isFunctionTy(),
1389 "gc.statepoint callee must be of function pointer type", &CI, Target);
Philip Reames1ffa9372015-01-30 23:28:05 +00001390 FunctionType *TargetFuncType = cast<FunctionType>(PT->getElementType());
1391
Philip Reames0285c742015-02-03 23:18:47 +00001392 const Value *NumCallArgsV = CS.getArgument(1);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001393 Assert(isa<ConstantInt>(NumCallArgsV),
1394 "gc.statepoint number of arguments to underlying call "
1395 "must be constant integer",
1396 &CI);
Philip Reames1ffa9372015-01-30 23:28:05 +00001397 const int NumCallArgs = cast<ConstantInt>(NumCallArgsV)->getZExtValue();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001398 Assert(NumCallArgs >= 0,
1399 "gc.statepoint number of arguments to underlying call "
1400 "must be positive",
1401 &CI);
Philip Reames1ffa9372015-01-30 23:28:05 +00001402 const int NumParams = (int)TargetFuncType->getNumParams();
1403 if (TargetFuncType->isVarArg()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001404 Assert(NumCallArgs >= NumParams,
1405 "gc.statepoint mismatch in number of vararg call args", &CI);
Philip Reames1ffa9372015-01-30 23:28:05 +00001406
1407 // TODO: Remove this limitation
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001408 Assert(TargetFuncType->getReturnType()->isVoidTy(),
1409 "gc.statepoint doesn't support wrapping non-void "
1410 "vararg functions yet",
1411 &CI);
Philip Reames1ffa9372015-01-30 23:28:05 +00001412 } else
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001413 Assert(NumCallArgs == NumParams,
1414 "gc.statepoint mismatch in number of call args", &CI);
Philip Reames1ffa9372015-01-30 23:28:05 +00001415
Philip Reames0285c742015-02-03 23:18:47 +00001416 const Value *Unused = CS.getArgument(2);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001417 Assert(isa<ConstantInt>(Unused) && cast<ConstantInt>(Unused)->isNullValue(),
1418 "gc.statepoint parameter #3 must be zero", &CI);
Philip Reames1ffa9372015-01-30 23:28:05 +00001419
1420 // Verify that the types of the call parameter arguments match
1421 // the type of the wrapped callee.
1422 for (int i = 0; i < NumParams; i++) {
1423 Type *ParamType = TargetFuncType->getParamType(i);
Philip Reames0285c742015-02-03 23:18:47 +00001424 Type *ArgType = CS.getArgument(3+i)->getType();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001425 Assert(ArgType == ParamType,
1426 "gc.statepoint call argument does not match wrapped "
1427 "function type",
1428 &CI);
Philip Reames1ffa9372015-01-30 23:28:05 +00001429 }
1430 const int EndCallArgsInx = 2+NumCallArgs;
Philip Reames0285c742015-02-03 23:18:47 +00001431 const Value *NumDeoptArgsV = CS.getArgument(EndCallArgsInx+1);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001432 Assert(isa<ConstantInt>(NumDeoptArgsV),
1433 "gc.statepoint number of deoptimization arguments "
1434 "must be constant integer",
1435 &CI);
Philip Reames1ffa9372015-01-30 23:28:05 +00001436 const int NumDeoptArgs = cast<ConstantInt>(NumDeoptArgsV)->getZExtValue();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001437 Assert(NumDeoptArgs >= 0, "gc.statepoint number of deoptimization arguments "
1438 "must be positive",
1439 &CI);
Philip Reames1ffa9372015-01-30 23:28:05 +00001440
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001441 Assert(4 + NumCallArgs + NumDeoptArgs <= (int)CS.arg_size(),
1442 "gc.statepoint too few arguments according to length fields", &CI);
1443
Philip Reames1ffa9372015-01-30 23:28:05 +00001444 // Check that the only uses of this gc.statepoint are gc.result or
1445 // gc.relocate calls which are tied to this statepoint and thus part
1446 // of the same statepoint sequence
Philip Reames0285c742015-02-03 23:18:47 +00001447 for (const User *U : CI.users()) {
Philip Reames1ffa9372015-01-30 23:28:05 +00001448 const CallInst *Call = dyn_cast<const CallInst>(U);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001449 Assert(Call, "illegal use of statepoint token", &CI, U);
Philip Reames1ffa9372015-01-30 23:28:05 +00001450 if (!Call) continue;
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001451 Assert(isGCRelocate(Call) || isGCResult(Call),
1452 "gc.result or gc.relocate are the only value uses"
1453 "of a gc.statepoint",
1454 &CI, U);
Philip Reames1ffa9372015-01-30 23:28:05 +00001455 if (isGCResult(Call)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001456 Assert(Call->getArgOperand(0) == &CI,
1457 "gc.result connected to wrong gc.statepoint", &CI, Call);
Philip Reames1ffa9372015-01-30 23:28:05 +00001458 } else if (isGCRelocate(Call)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001459 Assert(Call->getArgOperand(0) == &CI,
1460 "gc.relocate connected to wrong gc.statepoint", &CI, Call);
Philip Reames1ffa9372015-01-30 23:28:05 +00001461 }
1462 }
1463
1464 // Note: It is legal for a single derived pointer to be listed multiple
1465 // times. It's non-optimal, but it is legal. It can also happen after
1466 // insertion if we strip a bitcast away.
1467 // Note: It is really tempting to check that each base is relocated and
1468 // that a derived pointer is never reused as a base pointer. This turns
1469 // out to be problematic since optimizations run after safepoint insertion
1470 // can recognize equality properties that the insertion logic doesn't know
1471 // about. See example statepoint.ll in the verifier subdirectory
1472}
1473
Reid Klecknercfb9ce52015-03-05 18:26:34 +00001474void Verifier::verifyFrameRecoverIndices() {
Reid Klecknercfb9ce52015-03-05 18:26:34 +00001475 for (auto &Counts : FrameEscapeInfo) {
1476 Function *F = Counts.first;
1477 unsigned EscapedObjectCount = Counts.second.first;
1478 unsigned MaxRecoveredIndex = Counts.second.second;
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001479 Assert(MaxRecoveredIndex <= EscapedObjectCount,
1480 "all indices passed to llvm.framerecover must be less than the "
1481 "number of arguments passed ot llvm.frameescape in the parent "
1482 "function",
1483 F);
Reid Klecknercfb9ce52015-03-05 18:26:34 +00001484 }
1485}
1486
Chris Lattner0e851da2002-04-18 20:37:37 +00001487// visitFunction - Verify that a function is ok.
Chris Lattnerd02f08d2002-02-20 17:55:43 +00001488//
Chandler Carruth043949d2014-01-19 02:22:18 +00001489void Verifier::visitFunction(const Function &F) {
Chris Lattner2ad5aa82005-05-08 22:27:09 +00001490 // Check function arguments.
Chris Lattner229907c2011-07-18 04:54:35 +00001491 FunctionType *FT = F.getFunctionType();
Chris Lattner45ffa212007-08-18 06:13:19 +00001492 unsigned NumArgs = F.arg_size();
Chris Lattneraf95e582002-04-13 22:48:46 +00001493
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001494 Assert(Context == &F.getContext(),
1495 "Function context does not match Module context!", &F);
Nick Lewycky62f864d2010-02-15 21:52:04 +00001496
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001497 Assert(!F.hasCommonLinkage(), "Functions may not have common linkage", &F);
1498 Assert(FT->getNumParams() == NumArgs,
1499 "# formal arguments must match # of arguments for function type!", &F,
1500 FT);
1501 Assert(F.getReturnType()->isFirstClassType() ||
1502 F.getReturnType()->isVoidTy() || F.getReturnType()->isStructTy(),
1503 "Functions cannot return aggregate values!", &F);
Chris Lattneraf95e582002-04-13 22:48:46 +00001504
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001505 Assert(!F.hasStructRetAttr() || F.getReturnType()->isVoidTy(),
1506 "Invalid struct return type!", &F);
Devang Patel9d9178592008-03-03 21:46:28 +00001507
Bill Wendlinge3a60a92013-04-18 20:15:25 +00001508 AttributeSet Attrs = F.getAttributes();
Duncan Sandsb99f44a2008-01-11 22:36:48 +00001509
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001510 Assert(VerifyAttributeCount(Attrs, FT->getNumParams()),
1511 "Attribute after last parameter!", &F);
Duncan Sandsb99f44a2008-01-11 22:36:48 +00001512
Duncan Sands8c582282007-12-21 19:19:01 +00001513 // Check function attributes.
Duncan Sands0009c442008-01-12 16:42:01 +00001514 VerifyFunctionAttrs(FT, Attrs, &F);
Duncan Sands07c90662007-07-27 15:09:54 +00001515
Michael Gottesman41748d72013-06-27 00:25:01 +00001516 // On function declarations/definitions, we do not support the builtin
1517 // attribute. We do not check this in VerifyFunctionAttrs since that is
1518 // checking for Attributes that can/can not ever be on functions.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001519 Assert(!Attrs.hasAttribute(AttributeSet::FunctionIndex, Attribute::Builtin),
1520 "Attribute 'builtin' can only be applied to a callsite.", &F);
Michael Gottesman41748d72013-06-27 00:25:01 +00001521
Chris Lattneref13ee32006-05-19 21:25:17 +00001522 // Check that this function meets the restrictions on this calling convention.
Reid Kleckner329d4a22014-08-29 21:25:28 +00001523 // Sometimes varargs is used for perfectly forwarding thunks, so some of these
1524 // restrictions can be lifted.
Chris Lattneref13ee32006-05-19 21:25:17 +00001525 switch (F.getCallingConv()) {
1526 default:
Chris Lattneref13ee32006-05-19 21:25:17 +00001527 case CallingConv::C:
1528 break;
Chris Lattneref13ee32006-05-19 21:25:17 +00001529 case CallingConv::Fast:
1530 case CallingConv::Cold:
Elena Demikhovskyd6afb032012-10-24 14:46:16 +00001531 case CallingConv::Intel_OCL_BI:
Che-Liang Chiou29947902010-09-25 07:46:17 +00001532 case CallingConv::PTX_Kernel:
1533 case CallingConv::PTX_Device:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001534 Assert(!F.isVarArg(), "Calling convention does not support varargs or "
1535 "perfect forwarding!",
1536 &F);
Chris Lattneref13ee32006-05-19 21:25:17 +00001537 break;
1538 }
Nick Lewycky3fc89802009-09-07 20:44:51 +00001539
Nick Lewyckyadbc2842009-05-30 05:06:04 +00001540 bool isLLVMdotName = F.getName().size() >= 5 &&
1541 F.getName().substr(0, 5) == "llvm.";
Nick Lewyckyadbc2842009-05-30 05:06:04 +00001542
Chris Lattneraf95e582002-04-13 22:48:46 +00001543 // Check that the argument values match the function type for this function...
Chris Lattner149376d2002-10-13 20:57:00 +00001544 unsigned i = 0;
Chandler Carruth043949d2014-01-19 02:22:18 +00001545 for (Function::const_arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E;
1546 ++I, ++i) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001547 Assert(I->getType() == FT->getParamType(i),
1548 "Argument value does not match function argument type!", I,
1549 FT->getParamType(i));
1550 Assert(I->getType()->isFirstClassType(),
1551 "Function arguments must have first-class types!", I);
Nick Lewyckyadbc2842009-05-30 05:06:04 +00001552 if (!isLLVMdotName)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001553 Assert(!I->getType()->isMetadataTy(),
1554 "Function takes metadata but isn't an intrinsic", I, &F);
Dan Gohman4051bf42008-08-27 14:44:57 +00001555 }
Chris Lattneraf95e582002-04-13 22:48:46 +00001556
Jeffrey Yasskin091217b2010-01-27 20:34:15 +00001557 if (F.isMaterializable()) {
1558 // Function has a body somewhere we can't see.
1559 } else if (F.isDeclaration()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001560 Assert(F.hasExternalLinkage() || F.hasExternalWeakLinkage(),
1561 "invalid linkage type for function declaration", &F);
Chris Lattnerd79f3d52007-09-19 17:14:45 +00001562 } else {
Chris Lattnercb813312006-12-13 04:45:46 +00001563 // Verify that this function (which has a body) is not named "llvm.*". It
1564 // is not legal to define intrinsics.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001565 Assert(!isLLVMdotName, "llvm intrinsics cannot be defined!", &F);
Matt Arsenaultc4c92262013-07-20 17:46:00 +00001566
Chris Lattner149376d2002-10-13 20:57:00 +00001567 // Check the entry node
Chandler Carruth043949d2014-01-19 02:22:18 +00001568 const BasicBlock *Entry = &F.getEntryBlock();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001569 Assert(pred_empty(Entry),
1570 "Entry block to function must not have predecessors!", Entry);
Matt Arsenaultc4c92262013-07-20 17:46:00 +00001571
Chris Lattner27471742009-11-01 04:08:01 +00001572 // The address of the entry block cannot be taken, unless it is dead.
1573 if (Entry->hasAddressTaken()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001574 Assert(!BlockAddress::lookup(Entry)->isConstantUsed(),
1575 "blockaddress may not be used with the entry block!", Entry);
Chris Lattner27471742009-11-01 04:08:01 +00001576 }
Chris Lattner149376d2002-10-13 20:57:00 +00001577 }
Matt Arsenaultc4c92262013-07-20 17:46:00 +00001578
Chris Lattner7730dcc2009-09-11 17:05:29 +00001579 // If this function is actually an intrinsic, verify that it is only used in
1580 // direct call/invokes, never having its "address taken".
1581 if (F.getIntrinsicID()) {
Gabor Greifa2fbc0a2010-03-24 13:21:49 +00001582 const User *U;
1583 if (F.hasAddressTaken(&U))
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001584 Assert(0, "Invalid user of intrinsic instruction!", U);
Chris Lattner7730dcc2009-09-11 17:05:29 +00001585 }
Nico Rieck7157bb72014-01-14 15:22:47 +00001586
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001587 Assert(!F.hasDLLImportStorageClass() ||
1588 (F.isDeclaration() && F.hasExternalLinkage()) ||
1589 F.hasAvailableExternallyLinkage(),
1590 "Function is marked as dllimport, but not external.", &F);
Chris Lattnerd02f08d2002-02-20 17:55:43 +00001591}
1592
Chris Lattner0e851da2002-04-18 20:37:37 +00001593// verifyBasicBlock - Verify that a basic block is well formed...
1594//
Chris Lattner069a7952002-06-25 15:56:27 +00001595void Verifier::visitBasicBlock(BasicBlock &BB) {
Chris Lattnerc9e79d02004-09-29 20:07:45 +00001596 InstsInThisBlock.clear();
1597
Alkis Evlogimenosbe526cf2004-12-04 02:30:42 +00001598 // Ensure that basic blocks have terminators!
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001599 Assert(BB.getTerminator(), "Basic Block does not have terminator!", &BB);
Alkis Evlogimenosbe526cf2004-12-04 02:30:42 +00001600
Chris Lattnerdf9779c2003-10-05 17:44:18 +00001601 // Check constraints that this basic block imposes on all of the PHI nodes in
1602 // it.
1603 if (isa<PHINode>(BB.front())) {
Chris Lattner59a8d2c2007-02-10 08:33:11 +00001604 SmallVector<BasicBlock*, 8> Preds(pred_begin(&BB), pred_end(&BB));
1605 SmallVector<std::pair<BasicBlock*, Value*>, 8> Values;
Chris Lattnerdf9779c2003-10-05 17:44:18 +00001606 std::sort(Preds.begin(), Preds.end());
Misha Brukmanb1c93172005-04-21 23:48:37 +00001607 PHINode *PN;
Chris Lattner307e1df2004-06-05 17:44:48 +00001608 for (BasicBlock::iterator I = BB.begin(); (PN = dyn_cast<PHINode>(I));++I) {
Chris Lattnerdf9779c2003-10-05 17:44:18 +00001609 // Ensure that PHI nodes have at least one entry!
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001610 Assert(PN->getNumIncomingValues() != 0,
1611 "PHI nodes must have at least one entry. If the block is dead, "
1612 "the PHI should be removed!",
1613 PN);
1614 Assert(PN->getNumIncomingValues() == Preds.size(),
1615 "PHINode should have one entry for each predecessor of its "
1616 "parent basic block!",
1617 PN);
Misha Brukmanb1c93172005-04-21 23:48:37 +00001618
Chris Lattnerdf9779c2003-10-05 17:44:18 +00001619 // Get and sort all incoming values in the PHI node...
Chris Lattner59a8d2c2007-02-10 08:33:11 +00001620 Values.clear();
Chris Lattnerdf9779c2003-10-05 17:44:18 +00001621 Values.reserve(PN->getNumIncomingValues());
1622 for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i)
1623 Values.push_back(std::make_pair(PN->getIncomingBlock(i),
1624 PN->getIncomingValue(i)));
1625 std::sort(Values.begin(), Values.end());
Misha Brukmanb1c93172005-04-21 23:48:37 +00001626
Chris Lattnerdf9779c2003-10-05 17:44:18 +00001627 for (unsigned i = 0, e = Values.size(); i != e; ++i) {
1628 // Check to make sure that if there is more than one entry for a
1629 // particular basic block in this PHI node, that the incoming values are
1630 // all identical.
1631 //
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001632 Assert(i == 0 || Values[i].first != Values[i - 1].first ||
1633 Values[i].second == Values[i - 1].second,
1634 "PHI node has multiple entries for the same basic block with "
1635 "different incoming values!",
1636 PN, Values[i].first, Values[i].second, Values[i - 1].second);
Misha Brukmanb1c93172005-04-21 23:48:37 +00001637
Chris Lattnerdf9779c2003-10-05 17:44:18 +00001638 // Check to make sure that the predecessors and PHI node entries are
1639 // matched up.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001640 Assert(Values[i].first == Preds[i],
1641 "PHI node entries do not match predecessors!", PN,
1642 Values[i].first, Preds[i]);
Chris Lattnerdf9779c2003-10-05 17:44:18 +00001643 }
1644 }
1645 }
Adrian Prantl940257f2014-11-21 00:39:43 +00001646
1647 // Check that all instructions have their parent pointers set up correctly.
Zachary Turner8325a5c2014-11-21 01:19:09 +00001648 for (auto &I : BB)
1649 {
Adrian Prantl940257f2014-11-21 00:39:43 +00001650 Assert(I.getParent() == &BB, "Instruction has bogus parent pointer!");
Zachary Turner8325a5c2014-11-21 01:19:09 +00001651 }
Chris Lattner069a7952002-06-25 15:56:27 +00001652}
Chris Lattnerfbf5be52002-03-15 20:25:09 +00001653
Chris Lattner069a7952002-06-25 15:56:27 +00001654void Verifier::visitTerminatorInst(TerminatorInst &I) {
1655 // Ensure that terminators only exist at the end of the basic block.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001656 Assert(&I == I.getParent()->getTerminator(),
1657 "Terminator found in the middle of a basic block!", I.getParent());
Chris Lattner7af3ee92002-07-18 00:13:42 +00001658 visitInstruction(I);
Chris Lattner069a7952002-06-25 15:56:27 +00001659}
1660
Nick Lewycky1d9a8152010-02-15 22:09:09 +00001661void Verifier::visitBranchInst(BranchInst &BI) {
1662 if (BI.isConditional()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001663 Assert(BI.getCondition()->getType()->isIntegerTy(1),
1664 "Branch condition is not 'i1' type!", &BI, BI.getCondition());
Nick Lewycky1d9a8152010-02-15 22:09:09 +00001665 }
1666 visitTerminatorInst(BI);
1667}
1668
Chris Lattner069a7952002-06-25 15:56:27 +00001669void Verifier::visitReturnInst(ReturnInst &RI) {
1670 Function *F = RI.getParent()->getParent();
Devang Patel59643e52008-02-23 00:35:18 +00001671 unsigned N = RI.getNumOperands();
Matt Arsenaultc4c92262013-07-20 17:46:00 +00001672 if (F->getReturnType()->isVoidTy())
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001673 Assert(N == 0,
1674 "Found return instr that returns non-void in Function of void "
1675 "return type!",
1676 &RI, F->getReturnType());
Jay Foad11522092011-04-04 07:44:02 +00001677 else
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001678 Assert(N == 1 && F->getReturnType() == RI.getOperand(0)->getType(),
1679 "Function return type does not match operand "
1680 "type of return inst!",
1681 &RI, F->getReturnType());
Nick Lewycky3fc89802009-09-07 20:44:51 +00001682
Misha Brukman7eb05a12003-08-18 14:43:39 +00001683 // Check to make sure that the return value has necessary properties for
Chris Lattner069a7952002-06-25 15:56:27 +00001684 // terminators...
1685 visitTerminatorInst(RI);
Chris Lattnerd02f08d2002-02-20 17:55:43 +00001686}
1687
Chris Lattnerab5aa142004-05-21 16:47:21 +00001688void Verifier::visitSwitchInst(SwitchInst &SI) {
1689 // Check to make sure that all of the constants in the switch instruction
1690 // have the same type as the switched-on value.
Chris Lattner229907c2011-07-18 04:54:35 +00001691 Type *SwitchTy = SI.getCondition()->getType();
Bob Wilsone4077362013-09-09 19:14:35 +00001692 SmallPtrSet<ConstantInt*, 32> Constants;
Stepan Dyatkovskiy97b02fc2012-03-11 06:09:17 +00001693 for (SwitchInst::CaseIt i = SI.case_begin(), e = SI.case_end(); i != e; ++i) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001694 Assert(i.getCaseValue()->getType() == SwitchTy,
1695 "Switch constants must all be same type as switch value!", &SI);
1696 Assert(Constants.insert(i.getCaseValue()).second,
1697 "Duplicate integer as switch case", &SI, i.getCaseValue());
Stepan Dyatkovskiye89dafd2012-05-21 10:44:40 +00001698 }
Matt Arsenaultc4c92262013-07-20 17:46:00 +00001699
Chris Lattnerab5aa142004-05-21 16:47:21 +00001700 visitTerminatorInst(SI);
1701}
1702
Dan Gohmand0a1e3d2010-08-02 23:08:33 +00001703void Verifier::visitIndirectBrInst(IndirectBrInst &BI) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001704 Assert(BI.getAddress()->getType()->isPointerTy(),
1705 "Indirectbr operand must have pointer type!", &BI);
Dan Gohmand0a1e3d2010-08-02 23:08:33 +00001706 for (unsigned i = 0, e = BI.getNumDestinations(); i != e; ++i)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001707 Assert(BI.getDestination(i)->getType()->isLabelTy(),
1708 "Indirectbr destinations must all have pointer type!", &BI);
Dan Gohmand0a1e3d2010-08-02 23:08:33 +00001709
1710 visitTerminatorInst(BI);
1711}
1712
Chris Lattner75648e72004-03-12 05:54:31 +00001713void Verifier::visitSelectInst(SelectInst &SI) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001714 Assert(!SelectInst::areInvalidOperands(SI.getOperand(0), SI.getOperand(1),
1715 SI.getOperand(2)),
1716 "Invalid operands for select instruction!", &SI);
Chris Lattner88107952008-12-29 00:12:50 +00001717
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001718 Assert(SI.getTrueValue()->getType() == SI.getType(),
1719 "Select values must have same type as select instruction!", &SI);
Chris Lattnercde15fb2004-09-29 21:19:28 +00001720 visitInstruction(SI);
Chris Lattner75648e72004-03-12 05:54:31 +00001721}
1722
Misha Brukmanc566ca362004-03-02 00:22:19 +00001723/// visitUserOp1 - User defined operators shouldn't live beyond the lifetime of
1724/// a pass, if any exist, it's an error.
1725///
Chris Lattner903a25d2002-11-21 16:54:22 +00001726void Verifier::visitUserOp1(Instruction &I) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001727 Assert(0, "User-defined operators should not live outside of a pass!", &I);
Chris Lattner903a25d2002-11-21 16:54:22 +00001728}
Chris Lattner0e851da2002-04-18 20:37:37 +00001729
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001730void Verifier::visitTruncInst(TruncInst &I) {
1731 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001732 Type *SrcTy = I.getOperand(0)->getType();
1733 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001734
1735 // Get the size of the types in bits, we'll need this later
Dan Gohman7ccc52f2009-06-15 22:12:54 +00001736 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
1737 unsigned DestBitSize = DestTy->getScalarSizeInBits();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001738
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001739 Assert(SrcTy->isIntOrIntVectorTy(), "Trunc only operates on integer", &I);
1740 Assert(DestTy->isIntOrIntVectorTy(), "Trunc only produces integer", &I);
1741 Assert(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1742 "trunc source and destination must both be a vector or neither", &I);
1743 Assert(SrcBitSize > DestBitSize, "DestTy too big for Trunc", &I);
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001744
1745 visitInstruction(I);
1746}
1747
1748void Verifier::visitZExtInst(ZExtInst &I) {
1749 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001750 Type *SrcTy = I.getOperand(0)->getType();
1751 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001752
1753 // Get the size of the types in bits, we'll need this later
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001754 Assert(SrcTy->isIntOrIntVectorTy(), "ZExt only operates on integer", &I);
1755 Assert(DestTy->isIntOrIntVectorTy(), "ZExt only produces an integer", &I);
1756 Assert(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1757 "zext source and destination must both be a vector or neither", &I);
Dan Gohman7ccc52f2009-06-15 22:12:54 +00001758 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
1759 unsigned DestBitSize = DestTy->getScalarSizeInBits();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001760
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001761 Assert(SrcBitSize < DestBitSize, "Type too small for ZExt", &I);
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001762
1763 visitInstruction(I);
1764}
1765
1766void Verifier::visitSExtInst(SExtInst &I) {
1767 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001768 Type *SrcTy = I.getOperand(0)->getType();
1769 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001770
1771 // Get the size of the types in bits, we'll need this later
Dan Gohman7ccc52f2009-06-15 22:12:54 +00001772 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
1773 unsigned DestBitSize = DestTy->getScalarSizeInBits();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001774
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001775 Assert(SrcTy->isIntOrIntVectorTy(), "SExt only operates on integer", &I);
1776 Assert(DestTy->isIntOrIntVectorTy(), "SExt only produces an integer", &I);
1777 Assert(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1778 "sext source and destination must both be a vector or neither", &I);
1779 Assert(SrcBitSize < DestBitSize, "Type too small for SExt", &I);
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001780
1781 visitInstruction(I);
1782}
1783
1784void Verifier::visitFPTruncInst(FPTruncInst &I) {
1785 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001786 Type *SrcTy = I.getOperand(0)->getType();
1787 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001788 // Get the size of the types in bits, we'll need this later
Dan Gohman7ccc52f2009-06-15 22:12:54 +00001789 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
1790 unsigned DestBitSize = DestTy->getScalarSizeInBits();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001791
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001792 Assert(SrcTy->isFPOrFPVectorTy(), "FPTrunc only operates on FP", &I);
1793 Assert(DestTy->isFPOrFPVectorTy(), "FPTrunc only produces an FP", &I);
1794 Assert(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1795 "fptrunc source and destination must both be a vector or neither", &I);
1796 Assert(SrcBitSize > DestBitSize, "DestTy too big for FPTrunc", &I);
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001797
1798 visitInstruction(I);
1799}
1800
1801void Verifier::visitFPExtInst(FPExtInst &I) {
1802 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001803 Type *SrcTy = I.getOperand(0)->getType();
1804 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001805
1806 // Get the size of the types in bits, we'll need this later
Dan Gohman7ccc52f2009-06-15 22:12:54 +00001807 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
1808 unsigned DestBitSize = DestTy->getScalarSizeInBits();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001809
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001810 Assert(SrcTy->isFPOrFPVectorTy(), "FPExt only operates on FP", &I);
1811 Assert(DestTy->isFPOrFPVectorTy(), "FPExt only produces an FP", &I);
1812 Assert(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1813 "fpext source and destination must both be a vector or neither", &I);
1814 Assert(SrcBitSize < DestBitSize, "DestTy too small for FPExt", &I);
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001815
1816 visitInstruction(I);
1817}
1818
1819void Verifier::visitUIToFPInst(UIToFPInst &I) {
1820 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001821 Type *SrcTy = I.getOperand(0)->getType();
1822 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001823
Duncan Sands19d0b472010-02-16 11:11:14 +00001824 bool SrcVec = SrcTy->isVectorTy();
1825 bool DstVec = DestTy->isVectorTy();
Nate Begemand4d45c22007-11-17 03:58:34 +00001826
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001827 Assert(SrcVec == DstVec,
1828 "UIToFP source and dest must both be vector or scalar", &I);
1829 Assert(SrcTy->isIntOrIntVectorTy(),
1830 "UIToFP source must be integer or integer vector", &I);
1831 Assert(DestTy->isFPOrFPVectorTy(), "UIToFP result must be FP or FP vector",
1832 &I);
Nate Begemand4d45c22007-11-17 03:58:34 +00001833
1834 if (SrcVec && DstVec)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001835 Assert(cast<VectorType>(SrcTy)->getNumElements() ==
1836 cast<VectorType>(DestTy)->getNumElements(),
1837 "UIToFP source and dest vector length mismatch", &I);
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001838
1839 visitInstruction(I);
1840}
1841
1842void Verifier::visitSIToFPInst(SIToFPInst &I) {
1843 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001844 Type *SrcTy = I.getOperand(0)->getType();
1845 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001846
Duncan Sands19d0b472010-02-16 11:11:14 +00001847 bool SrcVec = SrcTy->isVectorTy();
1848 bool DstVec = DestTy->isVectorTy();
Nate Begemand4d45c22007-11-17 03:58:34 +00001849
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001850 Assert(SrcVec == DstVec,
1851 "SIToFP source and dest must both be vector or scalar", &I);
1852 Assert(SrcTy->isIntOrIntVectorTy(),
1853 "SIToFP source must be integer or integer vector", &I);
1854 Assert(DestTy->isFPOrFPVectorTy(), "SIToFP result must be FP or FP vector",
1855 &I);
Nate Begemand4d45c22007-11-17 03:58:34 +00001856
1857 if (SrcVec && DstVec)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001858 Assert(cast<VectorType>(SrcTy)->getNumElements() ==
1859 cast<VectorType>(DestTy)->getNumElements(),
1860 "SIToFP source and dest vector length mismatch", &I);
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001861
1862 visitInstruction(I);
1863}
1864
1865void Verifier::visitFPToUIInst(FPToUIInst &I) {
1866 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001867 Type *SrcTy = I.getOperand(0)->getType();
1868 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001869
Duncan Sands19d0b472010-02-16 11:11:14 +00001870 bool SrcVec = SrcTy->isVectorTy();
1871 bool DstVec = DestTy->isVectorTy();
Nate Begemand4d45c22007-11-17 03:58:34 +00001872
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001873 Assert(SrcVec == DstVec,
1874 "FPToUI source and dest must both be vector or scalar", &I);
1875 Assert(SrcTy->isFPOrFPVectorTy(), "FPToUI source must be FP or FP vector",
1876 &I);
1877 Assert(DestTy->isIntOrIntVectorTy(),
1878 "FPToUI result must be integer or integer vector", &I);
Nate Begemand4d45c22007-11-17 03:58:34 +00001879
1880 if (SrcVec && DstVec)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001881 Assert(cast<VectorType>(SrcTy)->getNumElements() ==
1882 cast<VectorType>(DestTy)->getNumElements(),
1883 "FPToUI source and dest vector length mismatch", &I);
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001884
1885 visitInstruction(I);
1886}
1887
1888void Verifier::visitFPToSIInst(FPToSIInst &I) {
1889 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001890 Type *SrcTy = I.getOperand(0)->getType();
1891 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001892
Duncan Sands19d0b472010-02-16 11:11:14 +00001893 bool SrcVec = SrcTy->isVectorTy();
1894 bool DstVec = DestTy->isVectorTy();
Nate Begemand4d45c22007-11-17 03:58:34 +00001895
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001896 Assert(SrcVec == DstVec,
1897 "FPToSI source and dest must both be vector or scalar", &I);
1898 Assert(SrcTy->isFPOrFPVectorTy(), "FPToSI source must be FP or FP vector",
1899 &I);
1900 Assert(DestTy->isIntOrIntVectorTy(),
1901 "FPToSI result must be integer or integer vector", &I);
Nate Begemand4d45c22007-11-17 03:58:34 +00001902
1903 if (SrcVec && DstVec)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001904 Assert(cast<VectorType>(SrcTy)->getNumElements() ==
1905 cast<VectorType>(DestTy)->getNumElements(),
1906 "FPToSI source and dest vector length mismatch", &I);
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001907
1908 visitInstruction(I);
1909}
1910
1911void Verifier::visitPtrToIntInst(PtrToIntInst &I) {
1912 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001913 Type *SrcTy = I.getOperand(0)->getType();
1914 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001915
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001916 Assert(SrcTy->getScalarType()->isPointerTy(),
1917 "PtrToInt source must be pointer", &I);
1918 Assert(DestTy->getScalarType()->isIntegerTy(),
1919 "PtrToInt result must be integral", &I);
1920 Assert(SrcTy->isVectorTy() == DestTy->isVectorTy(), "PtrToInt type mismatch",
1921 &I);
Nadav Rotem3924cb02011-12-05 06:29:09 +00001922
1923 if (SrcTy->isVectorTy()) {
1924 VectorType *VSrc = dyn_cast<VectorType>(SrcTy);
1925 VectorType *VDest = dyn_cast<VectorType>(DestTy);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001926 Assert(VSrc->getNumElements() == VDest->getNumElements(),
1927 "PtrToInt Vector width mismatch", &I);
Nadav Rotem3924cb02011-12-05 06:29:09 +00001928 }
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001929
1930 visitInstruction(I);
1931}
1932
1933void Verifier::visitIntToPtrInst(IntToPtrInst &I) {
1934 // Get the source and destination types
Chris Lattner229907c2011-07-18 04:54:35 +00001935 Type *SrcTy = I.getOperand(0)->getType();
1936 Type *DestTy = I.getType();
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001937
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001938 Assert(SrcTy->getScalarType()->isIntegerTy(),
1939 "IntToPtr source must be an integral", &I);
1940 Assert(DestTy->getScalarType()->isPointerTy(),
1941 "IntToPtr result must be a pointer", &I);
1942 Assert(SrcTy->isVectorTy() == DestTy->isVectorTy(), "IntToPtr type mismatch",
1943 &I);
Nadav Rotem3924cb02011-12-05 06:29:09 +00001944 if (SrcTy->isVectorTy()) {
1945 VectorType *VSrc = dyn_cast<VectorType>(SrcTy);
1946 VectorType *VDest = dyn_cast<VectorType>(DestTy);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001947 Assert(VSrc->getNumElements() == VDest->getNumElements(),
1948 "IntToPtr Vector width mismatch", &I);
Nadav Rotem3924cb02011-12-05 06:29:09 +00001949 }
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001950 visitInstruction(I);
1951}
1952
1953void Verifier::visitBitCastInst(BitCastInst &I) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001954 Assert(
Rafael Espindolaa4a94f12014-12-16 19:29:29 +00001955 CastInst::castIsValid(Instruction::BitCast, I.getOperand(0), I.getType()),
1956 "Invalid bitcast", &I);
Reid Spencer6c38f0b2006-11-27 01:05:10 +00001957 visitInstruction(I);
1958}
1959
Matt Arsenaultb03bd4d2013-11-15 01:34:59 +00001960void Verifier::visitAddrSpaceCastInst(AddrSpaceCastInst &I) {
1961 Type *SrcTy = I.getOperand(0)->getType();
1962 Type *DestTy = I.getType();
1963
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001964 Assert(SrcTy->isPtrOrPtrVectorTy(), "AddrSpaceCast source must be a pointer",
1965 &I);
1966 Assert(DestTy->isPtrOrPtrVectorTy(), "AddrSpaceCast result must be a pointer",
1967 &I);
1968 Assert(SrcTy->getPointerAddressSpace() != DestTy->getPointerAddressSpace(),
1969 "AddrSpaceCast must be between different address spaces", &I);
Matt Arsenaultb03bd4d2013-11-15 01:34:59 +00001970 if (SrcTy->isVectorTy())
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001971 Assert(SrcTy->getVectorNumElements() == DestTy->getVectorNumElements(),
1972 "AddrSpaceCast vector pointer number of elements mismatch", &I);
Matt Arsenaultb03bd4d2013-11-15 01:34:59 +00001973 visitInstruction(I);
1974}
1975
Misha Brukmanc566ca362004-03-02 00:22:19 +00001976/// visitPHINode - Ensure that a PHI node is well formed.
1977///
Chris Lattner069a7952002-06-25 15:56:27 +00001978void Verifier::visitPHINode(PHINode &PN) {
1979 // Ensure that the PHI nodes are all grouped together at the top of the block.
1980 // This can be tested by checking whether the instruction before this is
Misha Brukmanfa100532003-10-10 17:54:14 +00001981 // either nonexistent (because this is begin()) or is a PHI node. If not,
Chris Lattner069a7952002-06-25 15:56:27 +00001982 // then there is some other instruction before a PHI.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001983 Assert(&PN == &PN.getParent()->front() ||
1984 isa<PHINode>(--BasicBlock::iterator(&PN)),
1985 "PHI nodes not grouped at top of basic block!", &PN, PN.getParent());
Chris Lattner069a7952002-06-25 15:56:27 +00001986
Nick Lewyckyb2b04672009-09-08 01:23:52 +00001987 // Check that all of the values of the PHI node have the same type as the
1988 // result, and that the incoming blocks are really basic blocks.
1989 for (unsigned i = 0, e = PN.getNumIncomingValues(); i != e; ++i) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00001990 Assert(PN.getType() == PN.getIncomingValue(i)->getType(),
1991 "PHI node operands are not the same type as the result!", &PN);
Nick Lewyckyb2b04672009-09-08 01:23:52 +00001992 }
Chris Lattner3b93c912003-11-12 07:13:37 +00001993
Chris Lattnerdf9779c2003-10-05 17:44:18 +00001994 // All other PHI node constraints are checked in the visitBasicBlock method.
Chris Lattner0e851da2002-04-18 20:37:37 +00001995
1996 visitInstruction(PN);
1997}
1998
Duncan Sands8c582282007-12-21 19:19:01 +00001999void Verifier::VerifyCallSite(CallSite CS) {
2000 Instruction *I = CS.getInstruction();
2001
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002002 Assert(CS.getCalledValue()->getType()->isPointerTy(),
2003 "Called function must be a pointer!", I);
Chris Lattner229907c2011-07-18 04:54:35 +00002004 PointerType *FPTy = cast<PointerType>(CS.getCalledValue()->getType());
Chris Lattner338a4622002-05-08 19:49:50 +00002005
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002006 Assert(FPTy->getElementType()->isFunctionTy(),
2007 "Called function is not pointer to function type!", I);
Chris Lattner229907c2011-07-18 04:54:35 +00002008 FunctionType *FTy = cast<FunctionType>(FPTy->getElementType());
Chris Lattner338a4622002-05-08 19:49:50 +00002009
2010 // Verify that the correct number of arguments are being passed
2011 if (FTy->isVarArg())
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002012 Assert(CS.arg_size() >= FTy->getNumParams(),
2013 "Called function requires more parameters than were provided!", I);
Chris Lattner338a4622002-05-08 19:49:50 +00002014 else
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002015 Assert(CS.arg_size() == FTy->getNumParams(),
2016 "Incorrect number of arguments passed to called function!", I);
Chris Lattner338a4622002-05-08 19:49:50 +00002017
Chris Lattner609de002010-05-10 20:58:42 +00002018 // Verify that all arguments to the call match the function type.
Chris Lattner338a4622002-05-08 19:49:50 +00002019 for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002020 Assert(CS.getArgument(i)->getType() == FTy->getParamType(i),
2021 "Call parameter type does not match function signature!",
2022 CS.getArgument(i), FTy->getParamType(i), I);
Duncan Sands8c582282007-12-21 19:19:01 +00002023
Bill Wendlinge3a60a92013-04-18 20:15:25 +00002024 AttributeSet Attrs = CS.getAttributes();
Duncan Sandsb99f44a2008-01-11 22:36:48 +00002025
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002026 Assert(VerifyAttributeCount(Attrs, CS.arg_size()),
2027 "Attribute after last parameter!", I);
Duncan Sandsb99f44a2008-01-11 22:36:48 +00002028
Duncan Sands8c582282007-12-21 19:19:01 +00002029 // Verify call attributes.
Duncan Sands0009c442008-01-12 16:42:01 +00002030 VerifyFunctionAttrs(FTy, Attrs, I);
Duncan Sandsb99f44a2008-01-11 22:36:48 +00002031
David Majnemer91db08b2014-04-30 17:22:00 +00002032 // Conservatively check the inalloca argument.
2033 // We have a bug if we can find that there is an underlying alloca without
2034 // inalloca.
2035 if (CS.hasInAllocaArgument()) {
2036 Value *InAllocaArg = CS.getArgument(FTy->getNumParams() - 1);
2037 if (auto AI = dyn_cast<AllocaInst>(InAllocaArg->stripInBoundsOffsets()))
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002038 Assert(AI->isUsedWithInAlloca(),
2039 "inalloca argument for call has mismatched alloca", AI, I);
David Majnemer91db08b2014-04-30 17:22:00 +00002040 }
2041
Stephen Linb8bd2322013-04-20 05:14:40 +00002042 if (FTy->isVarArg()) {
2043 // FIXME? is 'nest' even legal here?
2044 bool SawNest = false;
2045 bool SawReturned = false;
2046
2047 for (unsigned Idx = 1; Idx < 1 + FTy->getNumParams(); ++Idx) {
2048 if (Attrs.hasAttribute(Idx, Attribute::Nest))
2049 SawNest = true;
2050 if (Attrs.hasAttribute(Idx, Attribute::Returned))
2051 SawReturned = true;
2052 }
2053
Duncan Sandsb99f44a2008-01-11 22:36:48 +00002054 // Check attributes on the varargs part.
2055 for (unsigned Idx = 1 + FTy->getNumParams(); Idx <= CS.arg_size(); ++Idx) {
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002056 Type *Ty = CS.getArgument(Idx-1)->getType();
Stephen Linb8bd2322013-04-20 05:14:40 +00002057 VerifyParameterAttrs(Attrs, Idx, Ty, false, I);
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002058
Stephen Linb8bd2322013-04-20 05:14:40 +00002059 if (Attrs.hasAttribute(Idx, Attribute::Nest)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002060 Assert(!SawNest, "More than one parameter has attribute nest!", I);
Stephen Linb8bd2322013-04-20 05:14:40 +00002061 SawNest = true;
2062 }
2063
2064 if (Attrs.hasAttribute(Idx, Attribute::Returned)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002065 Assert(!SawReturned, "More than one parameter has attribute returned!",
2066 I);
2067 Assert(Ty->canLosslesslyBitCastTo(FTy->getReturnType()),
2068 "Incompatible argument and return types for 'returned' "
2069 "attribute",
2070 I);
Stephen Linb8bd2322013-04-20 05:14:40 +00002071 SawReturned = true;
2072 }
Duncan Sands0009c442008-01-12 16:42:01 +00002073
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002074 Assert(!Attrs.hasAttribute(Idx, Attribute::StructRet),
2075 "Attribute 'sret' cannot be used for vararg call arguments!", I);
Reid Kleckner60d3a832014-01-16 22:59:24 +00002076
2077 if (Attrs.hasAttribute(Idx, Attribute::InAlloca))
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002078 Assert(Idx == CS.arg_size(), "inalloca isn't on the last argument!", I);
Duncan Sandsb99f44a2008-01-11 22:36:48 +00002079 }
Stephen Linb8bd2322013-04-20 05:14:40 +00002080 }
Duncan Sands8c582282007-12-21 19:19:01 +00002081
Nick Lewyckyadbc2842009-05-30 05:06:04 +00002082 // Verify that there's no metadata unless it's a direct call to an intrinsic.
Craig Topperc6207612014-04-09 06:08:46 +00002083 if (CS.getCalledFunction() == nullptr ||
Chris Lattner609de002010-05-10 20:58:42 +00002084 !CS.getCalledFunction()->getName().startswith("llvm.")) {
Nick Lewyckyadbc2842009-05-30 05:06:04 +00002085 for (FunctionType::param_iterator PI = FTy->param_begin(),
2086 PE = FTy->param_end(); PI != PE; ++PI)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002087 Assert(!(*PI)->isMetadataTy(),
2088 "Function has metadata parameter but isn't an intrinsic", I);
Nick Lewyckyadbc2842009-05-30 05:06:04 +00002089 }
2090
Duncan Sands8c582282007-12-21 19:19:01 +00002091 visitInstruction(*I);
2092}
2093
Reid Kleckner5772b772014-04-24 20:14:34 +00002094/// Two types are "congruent" if they are identical, or if they are both pointer
2095/// types with different pointee types and the same address space.
2096static bool isTypeCongruent(Type *L, Type *R) {
2097 if (L == R)
2098 return true;
2099 PointerType *PL = dyn_cast<PointerType>(L);
2100 PointerType *PR = dyn_cast<PointerType>(R);
2101 if (!PL || !PR)
2102 return false;
2103 return PL->getAddressSpace() == PR->getAddressSpace();
2104}
2105
Reid Klecknerd20c9702014-05-15 23:58:57 +00002106static AttrBuilder getParameterABIAttributes(int I, AttributeSet Attrs) {
2107 static const Attribute::AttrKind ABIAttrs[] = {
2108 Attribute::StructRet, Attribute::ByVal, Attribute::InAlloca,
2109 Attribute::InReg, Attribute::Returned};
2110 AttrBuilder Copy;
2111 for (auto AK : ABIAttrs) {
2112 if (Attrs.hasAttribute(I + 1, AK))
2113 Copy.addAttribute(AK);
2114 }
2115 if (Attrs.hasAttribute(I + 1, Attribute::Alignment))
2116 Copy.addAlignmentAttr(Attrs.getParamAlignment(I + 1));
2117 return Copy;
2118}
2119
Reid Kleckner5772b772014-04-24 20:14:34 +00002120void Verifier::verifyMustTailCall(CallInst &CI) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002121 Assert(!CI.isInlineAsm(), "cannot use musttail call with inline asm", &CI);
Reid Kleckner5772b772014-04-24 20:14:34 +00002122
2123 // - The caller and callee prototypes must match. Pointer types of
2124 // parameters or return types may differ in pointee type, but not
2125 // address space.
2126 Function *F = CI.getParent()->getParent();
2127 auto GetFnTy = [](Value *V) {
2128 return cast<FunctionType>(
2129 cast<PointerType>(V->getType())->getElementType());
2130 };
2131 FunctionType *CallerTy = GetFnTy(F);
2132 FunctionType *CalleeTy = GetFnTy(CI.getCalledValue());
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002133 Assert(CallerTy->getNumParams() == CalleeTy->getNumParams(),
2134 "cannot guarantee tail call due to mismatched parameter counts", &CI);
2135 Assert(CallerTy->isVarArg() == CalleeTy->isVarArg(),
2136 "cannot guarantee tail call due to mismatched varargs", &CI);
2137 Assert(isTypeCongruent(CallerTy->getReturnType(), CalleeTy->getReturnType()),
2138 "cannot guarantee tail call due to mismatched return types", &CI);
Reid Kleckner5772b772014-04-24 20:14:34 +00002139 for (int I = 0, E = CallerTy->getNumParams(); I != E; ++I) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002140 Assert(
Reid Kleckner5772b772014-04-24 20:14:34 +00002141 isTypeCongruent(CallerTy->getParamType(I), CalleeTy->getParamType(I)),
2142 "cannot guarantee tail call due to mismatched parameter types", &CI);
2143 }
2144
2145 // - The calling conventions of the caller and callee must match.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002146 Assert(F->getCallingConv() == CI.getCallingConv(),
2147 "cannot guarantee tail call due to mismatched calling conv", &CI);
Reid Kleckner5772b772014-04-24 20:14:34 +00002148
2149 // - All ABI-impacting function attributes, such as sret, byval, inreg,
2150 // returned, and inalloca, must match.
Reid Kleckner5772b772014-04-24 20:14:34 +00002151 AttributeSet CallerAttrs = F->getAttributes();
2152 AttributeSet CalleeAttrs = CI.getAttributes();
2153 for (int I = 0, E = CallerTy->getNumParams(); I != E; ++I) {
Reid Klecknerd20c9702014-05-15 23:58:57 +00002154 AttrBuilder CallerABIAttrs = getParameterABIAttributes(I, CallerAttrs);
2155 AttrBuilder CalleeABIAttrs = getParameterABIAttributes(I, CalleeAttrs);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002156 Assert(CallerABIAttrs == CalleeABIAttrs,
2157 "cannot guarantee tail call due to mismatched ABI impacting "
2158 "function attributes",
2159 &CI, CI.getOperand(I));
Reid Kleckner5772b772014-04-24 20:14:34 +00002160 }
2161
2162 // - The call must immediately precede a :ref:`ret <i_ret>` instruction,
2163 // or a pointer bitcast followed by a ret instruction.
2164 // - The ret instruction must return the (possibly bitcasted) value
2165 // produced by the call or void.
2166 Value *RetVal = &CI;
2167 Instruction *Next = CI.getNextNode();
2168
2169 // Handle the optional bitcast.
2170 if (BitCastInst *BI = dyn_cast_or_null<BitCastInst>(Next)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002171 Assert(BI->getOperand(0) == RetVal,
2172 "bitcast following musttail call must use the call", BI);
Reid Kleckner5772b772014-04-24 20:14:34 +00002173 RetVal = BI;
2174 Next = BI->getNextNode();
2175 }
2176
2177 // Check the return.
2178 ReturnInst *Ret = dyn_cast_or_null<ReturnInst>(Next);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002179 Assert(Ret, "musttail call must be precede a ret with an optional bitcast",
2180 &CI);
2181 Assert(!Ret->getReturnValue() || Ret->getReturnValue() == RetVal,
2182 "musttail call result must be returned", Ret);
Reid Kleckner5772b772014-04-24 20:14:34 +00002183}
2184
Duncan Sands8c582282007-12-21 19:19:01 +00002185void Verifier::visitCallInst(CallInst &CI) {
2186 VerifyCallSite(&CI);
Chris Lattner7af3ee92002-07-18 00:13:42 +00002187
Reid Kleckner5772b772014-04-24 20:14:34 +00002188 if (CI.isMustTailCall())
2189 verifyMustTailCall(CI);
2190
Dale Johannesenb842d522009-02-05 01:49:45 +00002191 if (Function *F = CI.getCalledFunction())
Brian Gaeke960707c2003-11-11 22:41:34 +00002192 if (Intrinsic::ID ID = (Intrinsic::ID)F->getIntrinsicID())
Chris Lattnerbb346d02003-05-08 03:47:33 +00002193 visitIntrinsicFunctionCall(ID, CI);
Duncan Sands8c582282007-12-21 19:19:01 +00002194}
2195
2196void Verifier::visitInvokeInst(InvokeInst &II) {
2197 VerifyCallSite(&II);
Bill Wendlingf4bbc042011-09-21 22:57:02 +00002198
2199 // Verify that there is a landingpad instruction as the first non-PHI
2200 // instruction of the 'unwind' destination.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002201 Assert(II.getUnwindDest()->isLandingPad(),
2202 "The unwind destination does not have a landingpad instruction!", &II);
Bill Wendlingf4bbc042011-09-21 22:57:02 +00002203
Igor Laevsky9570ff92015-02-19 11:28:47 +00002204 if (Function *F = II.getCalledFunction())
2205 // TODO: Ideally we should use visitIntrinsicFunction here. But it uses
2206 // CallInst as an input parameter. It not woth updating this whole
2207 // function only to support statepoint verification.
2208 if (F->getIntrinsicID() == Intrinsic::experimental_gc_statepoint)
2209 VerifyStatepoint(ImmutableCallSite(&II));
2210
Dan Gohman9c6e1882010-08-02 23:09:14 +00002211 visitTerminatorInst(II);
Chris Lattner21ea83b2002-04-18 22:11:52 +00002212}
Chris Lattner0e851da2002-04-18 20:37:37 +00002213
Misha Brukmanc566ca362004-03-02 00:22:19 +00002214/// visitBinaryOperator - Check that both arguments to the binary operator are
2215/// of the same type!
2216///
Chris Lattner069a7952002-06-25 15:56:27 +00002217void Verifier::visitBinaryOperator(BinaryOperator &B) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002218 Assert(B.getOperand(0)->getType() == B.getOperand(1)->getType(),
2219 "Both operands to a binary operator are not of the same type!", &B);
Chris Lattner0e851da2002-04-18 20:37:37 +00002220
Reid Spencer2341c222007-02-02 02:16:23 +00002221 switch (B.getOpcode()) {
Dan Gohman5208dd82009-06-05 16:10:00 +00002222 // Check that integer arithmetic operators are only used with
2223 // integral operands.
2224 case Instruction::Add:
2225 case Instruction::Sub:
2226 case Instruction::Mul:
2227 case Instruction::SDiv:
2228 case Instruction::UDiv:
2229 case Instruction::SRem:
2230 case Instruction::URem:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002231 Assert(B.getType()->isIntOrIntVectorTy(),
2232 "Integer arithmetic operators only work with integral types!", &B);
2233 Assert(B.getType() == B.getOperand(0)->getType(),
2234 "Integer arithmetic operators must have same type "
2235 "for operands and result!",
2236 &B);
Dan Gohman5208dd82009-06-05 16:10:00 +00002237 break;
2238 // Check that floating-point arithmetic operators are only used with
2239 // floating-point operands.
2240 case Instruction::FAdd:
2241 case Instruction::FSub:
2242 case Instruction::FMul:
2243 case Instruction::FDiv:
2244 case Instruction::FRem:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002245 Assert(B.getType()->isFPOrFPVectorTy(),
2246 "Floating-point arithmetic operators only work with "
2247 "floating-point types!",
2248 &B);
2249 Assert(B.getType() == B.getOperand(0)->getType(),
2250 "Floating-point arithmetic operators must have same type "
2251 "for operands and result!",
2252 &B);
Dan Gohman5208dd82009-06-05 16:10:00 +00002253 break;
Chris Lattner1f419252002-09-09 20:26:04 +00002254 // Check that logical operators are only used with integral operands.
Reid Spencer2341c222007-02-02 02:16:23 +00002255 case Instruction::And:
2256 case Instruction::Or:
2257 case Instruction::Xor:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002258 Assert(B.getType()->isIntOrIntVectorTy(),
2259 "Logical operators only work with integral types!", &B);
2260 Assert(B.getType() == B.getOperand(0)->getType(),
2261 "Logical operators must have same type for operands and result!",
2262 &B);
Reid Spencer2341c222007-02-02 02:16:23 +00002263 break;
2264 case Instruction::Shl:
2265 case Instruction::LShr:
2266 case Instruction::AShr:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002267 Assert(B.getType()->isIntOrIntVectorTy(),
2268 "Shifts only work with integral types!", &B);
2269 Assert(B.getType() == B.getOperand(0)->getType(),
2270 "Shift return type must be same as operands!", &B);
Reid Spencer2341c222007-02-02 02:16:23 +00002271 break;
Dan Gohman5208dd82009-06-05 16:10:00 +00002272 default:
Torok Edwinfbcc6632009-07-14 16:55:14 +00002273 llvm_unreachable("Unknown BinaryOperator opcode!");
Chris Lattner1f419252002-09-09 20:26:04 +00002274 }
Misha Brukmanb1c93172005-04-21 23:48:37 +00002275
Chris Lattner0e851da2002-04-18 20:37:37 +00002276 visitInstruction(B);
2277}
2278
Nick Lewyckyc72d2852010-08-22 23:45:14 +00002279void Verifier::visitICmpInst(ICmpInst &IC) {
Reid Spencerd9436b62006-11-20 01:22:35 +00002280 // Check that the operands are the same type
Chris Lattner229907c2011-07-18 04:54:35 +00002281 Type *Op0Ty = IC.getOperand(0)->getType();
2282 Type *Op1Ty = IC.getOperand(1)->getType();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002283 Assert(Op0Ty == Op1Ty,
2284 "Both operands to ICmp instruction are not of the same type!", &IC);
Reid Spencerd9436b62006-11-20 01:22:35 +00002285 // Check that the operands are the right type
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002286 Assert(Op0Ty->isIntOrIntVectorTy() || Op0Ty->getScalarType()->isPointerTy(),
2287 "Invalid operand types for ICmp instruction", &IC);
Nick Lewyckyc72d2852010-08-22 23:45:14 +00002288 // Check that the predicate is valid.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002289 Assert(IC.getPredicate() >= CmpInst::FIRST_ICMP_PREDICATE &&
2290 IC.getPredicate() <= CmpInst::LAST_ICMP_PREDICATE,
2291 "Invalid predicate in ICmp instruction!", &IC);
Nick Lewyckyadbc2842009-05-30 05:06:04 +00002292
Reid Spencerd9436b62006-11-20 01:22:35 +00002293 visitInstruction(IC);
2294}
2295
Nick Lewyckyc72d2852010-08-22 23:45:14 +00002296void Verifier::visitFCmpInst(FCmpInst &FC) {
Reid Spencerd9436b62006-11-20 01:22:35 +00002297 // Check that the operands are the same type
Chris Lattner229907c2011-07-18 04:54:35 +00002298 Type *Op0Ty = FC.getOperand(0)->getType();
2299 Type *Op1Ty = FC.getOperand(1)->getType();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002300 Assert(Op0Ty == Op1Ty,
2301 "Both operands to FCmp instruction are not of the same type!", &FC);
Reid Spencerd9436b62006-11-20 01:22:35 +00002302 // Check that the operands are the right type
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002303 Assert(Op0Ty->isFPOrFPVectorTy(),
2304 "Invalid operand types for FCmp instruction", &FC);
Nick Lewyckyc72d2852010-08-22 23:45:14 +00002305 // Check that the predicate is valid.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002306 Assert(FC.getPredicate() >= CmpInst::FIRST_FCMP_PREDICATE &&
2307 FC.getPredicate() <= CmpInst::LAST_FCMP_PREDICATE,
2308 "Invalid predicate in FCmp instruction!", &FC);
Nick Lewyckyc72d2852010-08-22 23:45:14 +00002309
Reid Spencerd9436b62006-11-20 01:22:35 +00002310 visitInstruction(FC);
2311}
2312
Robert Bocchino23004482006-01-10 19:05:34 +00002313void Verifier::visitExtractElementInst(ExtractElementInst &EI) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002314 Assert(
2315 ExtractElementInst::isValidOperands(EI.getOperand(0), EI.getOperand(1)),
2316 "Invalid extractelement operands!", &EI);
Robert Bocchino23004482006-01-10 19:05:34 +00002317 visitInstruction(EI);
2318}
2319
Robert Bocchinoca27f032006-01-17 20:07:22 +00002320void Verifier::visitInsertElementInst(InsertElementInst &IE) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002321 Assert(InsertElementInst::isValidOperands(IE.getOperand(0), IE.getOperand(1),
2322 IE.getOperand(2)),
2323 "Invalid insertelement operands!", &IE);
Robert Bocchinoca27f032006-01-17 20:07:22 +00002324 visitInstruction(IE);
2325}
2326
Chris Lattnerbbe0a422006-04-08 01:18:18 +00002327void Verifier::visitShuffleVectorInst(ShuffleVectorInst &SV) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002328 Assert(ShuffleVectorInst::isValidOperands(SV.getOperand(0), SV.getOperand(1),
2329 SV.getOperand(2)),
2330 "Invalid shufflevector operands!", &SV);
Chris Lattnerbbe0a422006-04-08 01:18:18 +00002331 visitInstruction(SV);
2332}
2333
Chris Lattner069a7952002-06-25 15:56:27 +00002334void Verifier::visitGetElementPtrInst(GetElementPtrInst &GEP) {
Duncan Sandsa71ae962012-02-03 17:28:51 +00002335 Type *TargetTy = GEP.getPointerOperandType()->getScalarType();
Nadav Rotem3924cb02011-12-05 06:29:09 +00002336
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002337 Assert(isa<PointerType>(TargetTy),
2338 "GEP base pointer is not a vector or a vector of pointers", &GEP);
2339 Assert(cast<PointerType>(TargetTy)->getElementType()->isSized(),
2340 "GEP into unsized type!", &GEP);
2341 Assert(GEP.getPointerOperandType()->isVectorTy() ==
2342 GEP.getType()->isVectorTy(),
2343 "Vector GEP must return a vector value", &GEP);
Nadav Rotem3924cb02011-12-05 06:29:09 +00002344
Chris Lattner84d82c72007-02-10 08:30:29 +00002345 SmallVector<Value*, 16> Idxs(GEP.idx_begin(), GEP.idx_end());
Chris Lattner229907c2011-07-18 04:54:35 +00002346 Type *ElTy =
Nadav Rotem3924cb02011-12-05 06:29:09 +00002347 GetElementPtrInst::getIndexedType(GEP.getPointerOperandType(), Idxs);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002348 Assert(ElTy, "Invalid indices for GEP pointer type!", &GEP);
Nadav Rotem3924cb02011-12-05 06:29:09 +00002349
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002350 Assert(GEP.getType()->getScalarType()->isPointerTy() &&
2351 cast<PointerType>(GEP.getType()->getScalarType())
2352 ->getElementType() == ElTy,
2353 "GEP is not of right type for indices!", &GEP, ElTy);
Duncan Sandse6beec62012-11-13 12:59:33 +00002354
2355 if (GEP.getPointerOperandType()->isVectorTy()) {
2356 // Additional checks for vector GEPs.
2357 unsigned GepWidth = GEP.getPointerOperandType()->getVectorNumElements();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002358 Assert(GepWidth == GEP.getType()->getVectorNumElements(),
2359 "Vector GEP result width doesn't match operand's", &GEP);
Duncan Sandse6beec62012-11-13 12:59:33 +00002360 for (unsigned i = 0, e = Idxs.size(); i != e; ++i) {
2361 Type *IndexTy = Idxs[i]->getType();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002362 Assert(IndexTy->isVectorTy(), "Vector GEP must have vector indices!",
2363 &GEP);
Duncan Sandse6beec62012-11-13 12:59:33 +00002364 unsigned IndexWidth = IndexTy->getVectorNumElements();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002365 Assert(IndexWidth == GepWidth, "Invalid GEP index vector width", &GEP);
Duncan Sandse6beec62012-11-13 12:59:33 +00002366 }
Nadav Rotem3924cb02011-12-05 06:29:09 +00002367 }
Chris Lattnerd46bb6e2002-04-24 19:12:21 +00002368 visitInstruction(GEP);
2369}
2370
Rafael Espindolae3c5f3e2012-05-31 16:04:26 +00002371static bool isContiguous(const ConstantRange &A, const ConstantRange &B) {
2372 return A.getUpper() == B.getLower() || A.getLower() == B.getUpper();
2373}
2374
Philip Reamesbf9676f2014-10-20 23:52:07 +00002375void Verifier::visitRangeMetadata(Instruction& I,
2376 MDNode* Range, Type* Ty) {
2377 assert(Range &&
2378 Range == I.getMetadata(LLVMContext::MD_range) &&
2379 "precondition violation");
2380
2381 unsigned NumOperands = Range->getNumOperands();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002382 Assert(NumOperands % 2 == 0, "Unfinished range!", Range);
Philip Reamesbf9676f2014-10-20 23:52:07 +00002383 unsigned NumRanges = NumOperands / 2;
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002384 Assert(NumRanges >= 1, "It should have at least one range!", Range);
2385
Philip Reamesbf9676f2014-10-20 23:52:07 +00002386 ConstantRange LastRange(1); // Dummy initial value
2387 for (unsigned i = 0; i < NumRanges; ++i) {
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +00002388 ConstantInt *Low =
2389 mdconst::dyn_extract<ConstantInt>(Range->getOperand(2 * i));
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002390 Assert(Low, "The lower limit must be an integer!", Low);
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +00002391 ConstantInt *High =
2392 mdconst::dyn_extract<ConstantInt>(Range->getOperand(2 * i + 1));
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002393 Assert(High, "The upper limit must be an integer!", High);
2394 Assert(High->getType() == Low->getType() && High->getType() == Ty,
2395 "Range types must match instruction type!", &I);
2396
Philip Reamesbf9676f2014-10-20 23:52:07 +00002397 APInt HighV = High->getValue();
2398 APInt LowV = Low->getValue();
2399 ConstantRange CurRange(LowV, HighV);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002400 Assert(!CurRange.isEmptySet() && !CurRange.isFullSet(),
2401 "Range must not be empty!", Range);
Philip Reamesbf9676f2014-10-20 23:52:07 +00002402 if (i != 0) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002403 Assert(CurRange.intersectWith(LastRange).isEmptySet(),
2404 "Intervals are overlapping", Range);
2405 Assert(LowV.sgt(LastRange.getLower()), "Intervals are not in order",
2406 Range);
2407 Assert(!isContiguous(CurRange, LastRange), "Intervals are contiguous",
2408 Range);
Philip Reamesbf9676f2014-10-20 23:52:07 +00002409 }
2410 LastRange = ConstantRange(LowV, HighV);
2411 }
2412 if (NumRanges > 2) {
2413 APInt FirstLow =
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +00002414 mdconst::dyn_extract<ConstantInt>(Range->getOperand(0))->getValue();
Philip Reamesbf9676f2014-10-20 23:52:07 +00002415 APInt FirstHigh =
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +00002416 mdconst::dyn_extract<ConstantInt>(Range->getOperand(1))->getValue();
Philip Reamesbf9676f2014-10-20 23:52:07 +00002417 ConstantRange FirstRange(FirstLow, FirstHigh);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002418 Assert(FirstRange.intersectWith(LastRange).isEmptySet(),
2419 "Intervals are overlapping", Range);
2420 Assert(!isContiguous(FirstRange, LastRange), "Intervals are contiguous",
2421 Range);
Philip Reamesbf9676f2014-10-20 23:52:07 +00002422 }
2423}
2424
Chris Lattner069a7952002-06-25 15:56:27 +00002425void Verifier::visitLoadInst(LoadInst &LI) {
Chris Lattner229907c2011-07-18 04:54:35 +00002426 PointerType *PTy = dyn_cast<PointerType>(LI.getOperand(0)->getType());
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002427 Assert(PTy, "Load operand must be a pointer.", &LI);
Chris Lattner229907c2011-07-18 04:54:35 +00002428 Type *ElTy = PTy->getElementType();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002429 Assert(ElTy == LI.getType(),
2430 "Load result type does not match pointer operand type!", &LI, ElTy);
2431 Assert(LI.getAlignment() <= Value::MaximumAlignment,
2432 "huge alignment values are unsupported", &LI);
Eli Friedman59b66882011-08-09 23:02:53 +00002433 if (LI.isAtomic()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002434 Assert(LI.getOrdering() != Release && LI.getOrdering() != AcquireRelease,
2435 "Load cannot have Release ordering", &LI);
2436 Assert(LI.getAlignment() != 0,
2437 "Atomic load must specify explicit alignment", &LI);
Eli Friedman79a6b302012-08-17 23:24:29 +00002438 if (!ElTy->isPointerTy()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002439 Assert(ElTy->isIntegerTy(), "atomic load operand must have integer type!",
2440 &LI, ElTy);
Eli Friedman79a6b302012-08-17 23:24:29 +00002441 unsigned Size = ElTy->getPrimitiveSizeInBits();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002442 Assert(Size >= 8 && !(Size & (Size - 1)),
2443 "atomic load operand must be power-of-two byte-sized integer", &LI,
2444 ElTy);
Eli Friedman79a6b302012-08-17 23:24:29 +00002445 }
Eli Friedman59b66882011-08-09 23:02:53 +00002446 } else {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002447 Assert(LI.getSynchScope() == CrossThread,
2448 "Non-atomic load cannot have SynchronizationScope specified", &LI);
Eli Friedman59b66882011-08-09 23:02:53 +00002449 }
Rafael Espindolaef9f5502012-03-24 00:14:51 +00002450
Chris Lattnerd46bb6e2002-04-24 19:12:21 +00002451 visitInstruction(LI);
2452}
2453
Chris Lattner069a7952002-06-25 15:56:27 +00002454void Verifier::visitStoreInst(StoreInst &SI) {
Chris Lattner229907c2011-07-18 04:54:35 +00002455 PointerType *PTy = dyn_cast<PointerType>(SI.getOperand(1)->getType());
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002456 Assert(PTy, "Store operand must be a pointer.", &SI);
Chris Lattner229907c2011-07-18 04:54:35 +00002457 Type *ElTy = PTy->getElementType();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002458 Assert(ElTy == SI.getOperand(0)->getType(),
2459 "Stored value type does not match pointer operand type!", &SI, ElTy);
2460 Assert(SI.getAlignment() <= Value::MaximumAlignment,
2461 "huge alignment values are unsupported", &SI);
Eli Friedman59b66882011-08-09 23:02:53 +00002462 if (SI.isAtomic()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002463 Assert(SI.getOrdering() != Acquire && SI.getOrdering() != AcquireRelease,
2464 "Store cannot have Acquire ordering", &SI);
2465 Assert(SI.getAlignment() != 0,
2466 "Atomic store must specify explicit alignment", &SI);
Eli Friedman79a6b302012-08-17 23:24:29 +00002467 if (!ElTy->isPointerTy()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002468 Assert(ElTy->isIntegerTy(),
2469 "atomic store operand must have integer type!", &SI, ElTy);
Eli Friedman79a6b302012-08-17 23:24:29 +00002470 unsigned Size = ElTy->getPrimitiveSizeInBits();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002471 Assert(Size >= 8 && !(Size & (Size - 1)),
2472 "atomic store operand must be power-of-two byte-sized integer",
2473 &SI, ElTy);
Eli Friedman79a6b302012-08-17 23:24:29 +00002474 }
Eli Friedman59b66882011-08-09 23:02:53 +00002475 } else {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002476 Assert(SI.getSynchScope() == CrossThread,
2477 "Non-atomic store cannot have SynchronizationScope specified", &SI);
Eli Friedman59b66882011-08-09 23:02:53 +00002478 }
Chris Lattnerd46bb6e2002-04-24 19:12:21 +00002479 visitInstruction(SI);
2480}
2481
Victor Hernandez8acf2952009-10-23 21:09:37 +00002482void Verifier::visitAllocaInst(AllocaInst &AI) {
Kaelyn Uhrain4e865602013-12-07 00:13:34 +00002483 SmallPtrSet<const Type*, 4> Visited;
Chris Lattner229907c2011-07-18 04:54:35 +00002484 PointerType *PTy = AI.getType();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002485 Assert(PTy->getAddressSpace() == 0,
2486 "Allocation instruction pointer not in the generic address space!",
2487 &AI);
2488 Assert(PTy->getElementType()->isSized(&Visited),
2489 "Cannot allocate unsized type", &AI);
2490 Assert(AI.getArraySize()->getType()->isIntegerTy(),
2491 "Alloca array size must have integer type", &AI);
2492 Assert(AI.getAlignment() <= Value::MaximumAlignment,
2493 "huge alignment values are unsupported", &AI);
Reid Klecknera534a382013-12-19 02:14:12 +00002494
Christopher Lamb55c6d4f2007-12-17 01:00:21 +00002495 visitInstruction(AI);
2496}
2497
Eli Friedmanc9a551e2011-07-28 21:48:00 +00002498void Verifier::visitAtomicCmpXchgInst(AtomicCmpXchgInst &CXI) {
Tim Northovere94a5182014-03-11 10:48:52 +00002499
2500 // FIXME: more conditions???
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002501 Assert(CXI.getSuccessOrdering() != NotAtomic,
2502 "cmpxchg instructions must be atomic.", &CXI);
2503 Assert(CXI.getFailureOrdering() != NotAtomic,
2504 "cmpxchg instructions must be atomic.", &CXI);
2505 Assert(CXI.getSuccessOrdering() != Unordered,
2506 "cmpxchg instructions cannot be unordered.", &CXI);
2507 Assert(CXI.getFailureOrdering() != Unordered,
2508 "cmpxchg instructions cannot be unordered.", &CXI);
2509 Assert(CXI.getSuccessOrdering() >= CXI.getFailureOrdering(),
2510 "cmpxchg instructions be at least as constrained on success as fail",
2511 &CXI);
2512 Assert(CXI.getFailureOrdering() != Release &&
2513 CXI.getFailureOrdering() != AcquireRelease,
2514 "cmpxchg failure ordering cannot include release semantics", &CXI);
Tim Northovere94a5182014-03-11 10:48:52 +00002515
Eli Friedmanc9a551e2011-07-28 21:48:00 +00002516 PointerType *PTy = dyn_cast<PointerType>(CXI.getOperand(0)->getType());
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002517 Assert(PTy, "First cmpxchg operand must be a pointer.", &CXI);
Eli Friedmanc9a551e2011-07-28 21:48:00 +00002518 Type *ElTy = PTy->getElementType();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002519 Assert(ElTy->isIntegerTy(), "cmpxchg operand must have integer type!", &CXI,
2520 ElTy);
Eli Friedman79a6b302012-08-17 23:24:29 +00002521 unsigned Size = ElTy->getPrimitiveSizeInBits();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002522 Assert(Size >= 8 && !(Size & (Size - 1)),
2523 "cmpxchg operand must be power-of-two byte-sized integer", &CXI, ElTy);
2524 Assert(ElTy == CXI.getOperand(1)->getType(),
2525 "Expected value type does not match pointer operand type!", &CXI,
2526 ElTy);
2527 Assert(ElTy == CXI.getOperand(2)->getType(),
2528 "Stored value type does not match pointer operand type!", &CXI, ElTy);
Eli Friedmanc9a551e2011-07-28 21:48:00 +00002529 visitInstruction(CXI);
2530}
2531
2532void Verifier::visitAtomicRMWInst(AtomicRMWInst &RMWI) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002533 Assert(RMWI.getOrdering() != NotAtomic,
2534 "atomicrmw instructions must be atomic.", &RMWI);
2535 Assert(RMWI.getOrdering() != Unordered,
2536 "atomicrmw instructions cannot be unordered.", &RMWI);
Eli Friedmanc9a551e2011-07-28 21:48:00 +00002537 PointerType *PTy = dyn_cast<PointerType>(RMWI.getOperand(0)->getType());
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002538 Assert(PTy, "First atomicrmw operand must be a pointer.", &RMWI);
Eli Friedmanc9a551e2011-07-28 21:48:00 +00002539 Type *ElTy = PTy->getElementType();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002540 Assert(ElTy->isIntegerTy(), "atomicrmw operand must have integer type!",
2541 &RMWI, ElTy);
Eli Friedman79a6b302012-08-17 23:24:29 +00002542 unsigned Size = ElTy->getPrimitiveSizeInBits();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002543 Assert(Size >= 8 && !(Size & (Size - 1)),
2544 "atomicrmw operand must be power-of-two byte-sized integer", &RMWI,
2545 ElTy);
2546 Assert(ElTy == RMWI.getOperand(1)->getType(),
2547 "Argument value type does not match pointer operand type!", &RMWI,
2548 ElTy);
2549 Assert(AtomicRMWInst::FIRST_BINOP <= RMWI.getOperation() &&
2550 RMWI.getOperation() <= AtomicRMWInst::LAST_BINOP,
2551 "Invalid binary operation!", &RMWI);
Eli Friedmanc9a551e2011-07-28 21:48:00 +00002552 visitInstruction(RMWI);
2553}
2554
Eli Friedmanfee02c62011-07-25 23:16:38 +00002555void Verifier::visitFenceInst(FenceInst &FI) {
2556 const AtomicOrdering Ordering = FI.getOrdering();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002557 Assert(Ordering == Acquire || Ordering == Release ||
2558 Ordering == AcquireRelease || Ordering == SequentiallyConsistent,
2559 "fence instructions may only have "
2560 "acquire, release, acq_rel, or seq_cst ordering.",
2561 &FI);
Eli Friedmanfee02c62011-07-25 23:16:38 +00002562 visitInstruction(FI);
2563}
2564
Dan Gohmanfa1211f2008-07-23 00:34:11 +00002565void Verifier::visitExtractValueInst(ExtractValueInst &EVI) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002566 Assert(ExtractValueInst::getIndexedType(EVI.getAggregateOperand()->getType(),
2567 EVI.getIndices()) == EVI.getType(),
2568 "Invalid ExtractValueInst operands!", &EVI);
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002569
Dan Gohmanfa1211f2008-07-23 00:34:11 +00002570 visitInstruction(EVI);
Devang Patel295711f2008-02-19 22:15:16 +00002571}
2572
Dan Gohmanfa1211f2008-07-23 00:34:11 +00002573void Verifier::visitInsertValueInst(InsertValueInst &IVI) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002574 Assert(ExtractValueInst::getIndexedType(IVI.getAggregateOperand()->getType(),
2575 IVI.getIndices()) ==
2576 IVI.getOperand(1)->getType(),
2577 "Invalid InsertValueInst operands!", &IVI);
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002578
Dan Gohmanfa1211f2008-07-23 00:34:11 +00002579 visitInstruction(IVI);
2580}
Chris Lattner0e851da2002-04-18 20:37:37 +00002581
Bill Wendlingfae14752011-08-12 20:24:12 +00002582void Verifier::visitLandingPadInst(LandingPadInst &LPI) {
2583 BasicBlock *BB = LPI.getParent();
2584
2585 // The landingpad instruction is ill-formed if it doesn't have any clauses and
2586 // isn't a cleanup.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002587 Assert(LPI.getNumClauses() > 0 || LPI.isCleanup(),
2588 "LandingPadInst needs at least one clause or to be a cleanup.", &LPI);
Bill Wendlingfae14752011-08-12 20:24:12 +00002589
2590 // The landingpad instruction defines its parent as a landing pad block. The
2591 // landing pad block may be branched to only by the unwind edge of an invoke.
Duncan P. N. Exon Smith6c990152014-07-21 17:06:51 +00002592 for (pred_iterator I = pred_begin(BB), E = pred_end(BB); I != E; ++I) {
2593 const InvokeInst *II = dyn_cast<InvokeInst>((*I)->getTerminator());
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002594 Assert(II && II->getUnwindDest() == BB && II->getNormalDest() != BB,
2595 "Block containing LandingPadInst must be jumped to "
2596 "only by the unwind edge of an invoke.",
2597 &LPI);
Bill Wendlingfae14752011-08-12 20:24:12 +00002598 }
2599
2600 // The landingpad instruction must be the first non-PHI instruction in the
2601 // block.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002602 Assert(LPI.getParent()->getLandingPadInst() == &LPI,
2603 "LandingPadInst not the first non-PHI instruction in the block.",
2604 &LPI);
Bill Wendlingfae14752011-08-12 20:24:12 +00002605
2606 // The personality functions for all landingpad instructions within the same
2607 // function should match.
2608 if (PersonalityFn)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002609 Assert(LPI.getPersonalityFn() == PersonalityFn,
2610 "Personality function doesn't match others in function", &LPI);
Bill Wendlingfae14752011-08-12 20:24:12 +00002611 PersonalityFn = LPI.getPersonalityFn();
2612
Duncan Sands86de1a62011-09-27 16:43:19 +00002613 // All operands must be constants.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002614 Assert(isa<Constant>(PersonalityFn), "Personality function is not constant!",
2615 &LPI);
Duncan Sands86de1a62011-09-27 16:43:19 +00002616 for (unsigned i = 0, e = LPI.getNumClauses(); i < e; ++i) {
Rafael Espindola4dc5dfc2014-06-04 18:51:31 +00002617 Constant *Clause = LPI.getClause(i);
Duncan Sands68ba8132011-09-27 19:34:22 +00002618 if (LPI.isCatch(i)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002619 Assert(isa<PointerType>(Clause->getType()),
2620 "Catch operand does not have pointer type!", &LPI);
Duncan Sands68ba8132011-09-27 19:34:22 +00002621 } else {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002622 Assert(LPI.isFilter(i), "Clause is neither catch nor filter!", &LPI);
2623 Assert(isa<ConstantArray>(Clause) || isa<ConstantAggregateZero>(Clause),
2624 "Filter operand is not an array of constants!", &LPI);
Duncan Sands68ba8132011-09-27 19:34:22 +00002625 }
Duncan Sands86de1a62011-09-27 16:43:19 +00002626 }
2627
Bill Wendlingfae14752011-08-12 20:24:12 +00002628 visitInstruction(LPI);
2629}
2630
Rafael Espindola654320a2012-02-26 02:23:37 +00002631void Verifier::verifyDominatesUse(Instruction &I, unsigned i) {
2632 Instruction *Op = cast<Instruction>(I.getOperand(i));
Rafael Espindola9a167352012-08-17 18:21:28 +00002633 // If the we have an invalid invoke, don't try to compute the dominance.
2634 // We already reject it in the invoke specific checks and the dominance
2635 // computation doesn't handle multiple edges.
2636 if (InvokeInst *II = dyn_cast<InvokeInst>(Op)) {
2637 if (II->getNormalDest() == II->getUnwindDest())
2638 return;
2639 }
Rafael Espindola654320a2012-02-26 02:23:37 +00002640
Rafael Espindola103c2cf2012-06-01 21:56:26 +00002641 const Use &U = I.getOperandUse(i);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002642 Assert(InstsInThisBlock.count(Op) || DT.dominates(Op, U),
2643 "Instruction does not dominate all uses!", Op, &I);
Rafael Espindola654320a2012-02-26 02:23:37 +00002644}
2645
Misha Brukmanc566ca362004-03-02 00:22:19 +00002646/// verifyInstruction - Verify that an instruction is well formed.
2647///
Chris Lattner069a7952002-06-25 15:56:27 +00002648void Verifier::visitInstruction(Instruction &I) {
Misha Brukmanb1c93172005-04-21 23:48:37 +00002649 BasicBlock *BB = I.getParent();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002650 Assert(BB, "Instruction not embedded in basic block!", &I);
Chris Lattner0e851da2002-04-18 20:37:37 +00002651
Chris Lattnerdf9779c2003-10-05 17:44:18 +00002652 if (!isa<PHINode>(I)) { // Check that non-phi nodes are not self referential
Ahmed Charles821b6662014-03-09 04:57:09 +00002653 for (User *U : I.users()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002654 Assert(U != (User *)&I || !DT.isReachableFromEntry(BB),
2655 "Only PHI nodes may reference their own value!", &I);
Ahmed Charles821b6662014-03-09 04:57:09 +00002656 }
Chris Lattnerdf9779c2003-10-05 17:44:18 +00002657 }
Nick Lewycky3fc89802009-09-07 20:44:51 +00002658
Chris Lattnerdf9779c2003-10-05 17:44:18 +00002659 // Check that void typed values don't have names
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002660 Assert(!I.getType()->isVoidTy() || !I.hasName(),
2661 "Instruction has a name, but provides a void value!", &I);
Chris Lattnerdf9779c2003-10-05 17:44:18 +00002662
Chris Lattner5f126b72004-03-29 00:29:36 +00002663 // Check that the return value of the instruction is either void or a legal
2664 // value type.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002665 Assert(I.getType()->isVoidTy() || I.getType()->isFirstClassType(),
2666 "Instruction returns a non-scalar type!", &I);
Chris Lattner5f126b72004-03-29 00:29:36 +00002667
Nick Lewycky93e06a52009-09-27 23:27:42 +00002668 // Check that the instruction doesn't produce metadata. Calls are already
2669 // checked against the callee type.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002670 Assert(!I.getType()->isMetadataTy() || isa<CallInst>(I) || isa<InvokeInst>(I),
2671 "Invalid use of metadata!", &I);
Nick Lewyckyadbc2842009-05-30 05:06:04 +00002672
Chris Lattner0e851da2002-04-18 20:37:37 +00002673 // Check that all uses of the instruction, if they are instructions
2674 // themselves, actually have parent basic blocks. If the use is not an
2675 // instruction, it is an error!
Chandler Carruthcdf47882014-03-09 03:16:01 +00002676 for (Use &U : I.uses()) {
2677 if (Instruction *Used = dyn_cast<Instruction>(U.getUser()))
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002678 Assert(Used->getParent() != nullptr,
2679 "Instruction referencing"
2680 " instruction not embedded in a basic block!",
2681 &I, Used);
Nick Lewycky984161a2009-09-08 02:02:39 +00002682 else {
Chandler Carruthcdf47882014-03-09 03:16:01 +00002683 CheckFailed("Use of instruction is not an instruction!", U);
Nick Lewycky984161a2009-09-08 02:02:39 +00002684 return;
2685 }
Chris Lattner0e851da2002-04-18 20:37:37 +00002686 }
2687
Chris Lattnerdf9779c2003-10-05 17:44:18 +00002688 for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002689 Assert(I.getOperand(i) != nullptr, "Instruction has null operand!", &I);
Chris Lattnerb7e1ef52006-07-11 20:29:49 +00002690
2691 // Check to make sure that only first-class-values are operands to
2692 // instructions.
Devang Patel1f00b532008-02-21 01:54:02 +00002693 if (!I.getOperand(i)->getType()->isFirstClassType()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002694 Assert(0, "Instruction operands must be first-class values!", &I);
Devang Patel1f00b532008-02-21 01:54:02 +00002695 }
Nick Lewyckyadbc2842009-05-30 05:06:04 +00002696
Chris Lattner9ece94b2004-03-14 03:23:54 +00002697 if (Function *F = dyn_cast<Function>(I.getOperand(i))) {
Chris Lattnerb7e1ef52006-07-11 20:29:49 +00002698 // Check to make sure that the "address of" an intrinsic function is never
2699 // taken.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002700 Assert(
2701 !F->isIntrinsic() ||
2702 i == (isa<CallInst>(I) ? e - 1 : isa<InvokeInst>(I) ? e - 3 : 0),
2703 "Cannot take the address of an intrinsic!", &I);
2704 Assert(
2705 !F->isIntrinsic() || isa<CallInst>(I) ||
Juergen Ributzkaad2363f2014-10-17 17:39:00 +00002706 F->getIntrinsicID() == Intrinsic::donothing ||
2707 F->getIntrinsicID() == Intrinsic::experimental_patchpoint_void ||
Igor Laevsky9570ff92015-02-19 11:28:47 +00002708 F->getIntrinsicID() == Intrinsic::experimental_patchpoint_i64 ||
2709 F->getIntrinsicID() == Intrinsic::experimental_gc_statepoint,
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002710 "Cannot invoke an intrinsinc other than"
2711 " donothing or patchpoint",
2712 &I);
2713 Assert(F->getParent() == M, "Referencing function in another module!",
2714 &I);
Chris Lattner9ece94b2004-03-14 03:23:54 +00002715 } else if (BasicBlock *OpBB = dyn_cast<BasicBlock>(I.getOperand(i))) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002716 Assert(OpBB->getParent() == BB->getParent(),
2717 "Referring to a basic block in another function!", &I);
Chris Lattner9ece94b2004-03-14 03:23:54 +00002718 } else if (Argument *OpArg = dyn_cast<Argument>(I.getOperand(i))) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002719 Assert(OpArg->getParent() == BB->getParent(),
2720 "Referring to an argument in another function!", &I);
Chris Lattner4ff04522007-04-20 21:48:08 +00002721 } else if (GlobalValue *GV = dyn_cast<GlobalValue>(I.getOperand(i))) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002722 Assert(GV->getParent() == M, "Referencing global in another module!", &I);
Rafael Espindola654320a2012-02-26 02:23:37 +00002723 } else if (isa<Instruction>(I.getOperand(i))) {
2724 verifyDominatesUse(I, i);
Chris Lattner41eb5cd2006-01-26 00:08:45 +00002725 } else if (isa<InlineAsm>(I.getOperand(i))) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002726 Assert((i + 1 == e && isa<CallInst>(I)) ||
2727 (i + 3 == e && isa<InvokeInst>(I)),
2728 "Cannot take the address of an inline asm!", &I);
Matt Arsenault24b49c42013-07-31 17:49:08 +00002729 } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(I.getOperand(i))) {
2730 if (CE->getType()->isPtrOrPtrVectorTy()) {
2731 // If we have a ConstantExpr pointer, we need to see if it came from an
2732 // illegal bitcast (inttoptr <constant int> )
2733 SmallVector<const ConstantExpr *, 4> Stack;
2734 SmallPtrSet<const ConstantExpr *, 4> Visited;
2735 Stack.push_back(CE);
2736
2737 while (!Stack.empty()) {
2738 const ConstantExpr *V = Stack.pop_back_val();
David Blaikie70573dc2014-11-19 07:49:26 +00002739 if (!Visited.insert(V).second)
Matt Arsenault24b49c42013-07-31 17:49:08 +00002740 continue;
2741
2742 VerifyConstantExprBitcastType(V);
2743
2744 for (unsigned I = 0, N = V->getNumOperands(); I != N; ++I) {
2745 if (ConstantExpr *Op = dyn_cast<ConstantExpr>(V->getOperand(I)))
2746 Stack.push_back(Op);
2747 }
2748 }
2749 }
Chris Lattnerdf9779c2003-10-05 17:44:18 +00002750 }
2751 }
Rafael Espindolaef9f5502012-03-24 00:14:51 +00002752
Duncan P. N. Exon Smithde36e802014-11-11 21:30:22 +00002753 if (MDNode *MD = I.getMetadata(LLVMContext::MD_fpmath)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002754 Assert(I.getType()->isFPOrFPVectorTy(),
2755 "fpmath requires a floating point result!", &I);
2756 Assert(MD->getNumOperands() == 1, "fpmath takes one operand!", &I);
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +00002757 if (ConstantFP *CFP0 =
2758 mdconst::dyn_extract_or_null<ConstantFP>(MD->getOperand(0))) {
Duncan Sands05f4df82012-04-16 16:28:59 +00002759 APFloat Accuracy = CFP0->getValueAPF();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002760 Assert(Accuracy.isFiniteNonZero() && !Accuracy.isNegative(),
2761 "fpmath accuracy not a positive number!", &I);
Duncan Sands05f4df82012-04-16 16:28:59 +00002762 } else {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002763 Assert(false, "invalid fpmath accuracy!", &I);
Duncan Sands05f4df82012-04-16 16:28:59 +00002764 }
Duncan Sandsaf06b262012-04-10 08:22:43 +00002765 }
2766
Duncan P. N. Exon Smithde36e802014-11-11 21:30:22 +00002767 if (MDNode *Range = I.getMetadata(LLVMContext::MD_range)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002768 Assert(isa<LoadInst>(I) || isa<CallInst>(I) || isa<InvokeInst>(I),
2769 "Ranges are only for loads, calls and invokes!", &I);
Philip Reamesbf9676f2014-10-20 23:52:07 +00002770 visitRangeMetadata(I, Range, I.getType());
2771 }
Rafael Espindolaef9f5502012-03-24 00:14:51 +00002772
Philip Reames0ca58b32014-10-21 20:56:29 +00002773 if (I.getMetadata(LLVMContext::MD_nonnull)) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002774 Assert(I.getType()->isPointerTy(), "nonnull applies only to pointer types",
2775 &I);
2776 Assert(isa<LoadInst>(I),
2777 "nonnull applies only to load instructions, use attributes"
2778 " for calls or invokes",
2779 &I);
Philip Reames0ca58b32014-10-21 20:56:29 +00002780 }
2781
Duncan P. N. Exon Smitha3bdc322015-03-20 19:26:58 +00002782 if (MDNode *N = I.getDebugLoc().getAsMDNode()) {
Duncan P. N. Exon Smithfc25da12015-03-24 17:32:19 +00002783 Assert(isa<MDLocation>(N), "invalid !dbg metadata attachment", &I, N);
2784 visitMDNode(*N);
Duncan P. N. Exon Smitha3bdc322015-03-20 19:26:58 +00002785 }
2786
Chris Lattnerc9e79d02004-09-29 20:07:45 +00002787 InstsInThisBlock.insert(&I);
Chris Lattnerbb346d02003-05-08 03:47:33 +00002788}
2789
Chris Lattner144b6192012-05-27 19:37:05 +00002790/// VerifyIntrinsicType - Verify that the specified type (which comes from an
2791/// intrinsic argument or return value) matches the type constraints specified
2792/// by the .td file (e.g. an "any integer" argument really is an integer).
2793///
2794/// This return true on error but does not print a message.
2795bool Verifier::VerifyIntrinsicType(Type *Ty,
2796 ArrayRef<Intrinsic::IITDescriptor> &Infos,
2797 SmallVectorImpl<Type*> &ArgTys) {
2798 using namespace Intrinsic;
2799
2800 // If we ran out of descriptors, there are too many arguments.
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002801 if (Infos.empty()) return true;
Chris Lattner144b6192012-05-27 19:37:05 +00002802 IITDescriptor D = Infos.front();
2803 Infos = Infos.slice(1);
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002804
Chris Lattner144b6192012-05-27 19:37:05 +00002805 switch (D.Kind) {
2806 case IITDescriptor::Void: return !Ty->isVoidTy();
Andrew Tricka2efd992013-10-31 17:18:11 +00002807 case IITDescriptor::VarArg: return true;
Chris Lattner144b6192012-05-27 19:37:05 +00002808 case IITDescriptor::MMX: return !Ty->isX86_MMXTy();
2809 case IITDescriptor::Metadata: return !Ty->isMetadataTy();
Michael Ilseman6c6d7152013-01-11 01:45:05 +00002810 case IITDescriptor::Half: return !Ty->isHalfTy();
Chris Lattner144b6192012-05-27 19:37:05 +00002811 case IITDescriptor::Float: return !Ty->isFloatTy();
2812 case IITDescriptor::Double: return !Ty->isDoubleTy();
2813 case IITDescriptor::Integer: return !Ty->isIntegerTy(D.Integer_Width);
2814 case IITDescriptor::Vector: {
2815 VectorType *VT = dyn_cast<VectorType>(Ty);
Craig Topperc6207612014-04-09 06:08:46 +00002816 return !VT || VT->getNumElements() != D.Vector_Width ||
Chris Lattner144b6192012-05-27 19:37:05 +00002817 VerifyIntrinsicType(VT->getElementType(), Infos, ArgTys);
2818 }
2819 case IITDescriptor::Pointer: {
2820 PointerType *PT = dyn_cast<PointerType>(Ty);
Craig Topperc6207612014-04-09 06:08:46 +00002821 return !PT || PT->getAddressSpace() != D.Pointer_AddressSpace ||
Chris Lattner144b6192012-05-27 19:37:05 +00002822 VerifyIntrinsicType(PT->getElementType(), Infos, ArgTys);
2823 }
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002824
Chris Lattner144b6192012-05-27 19:37:05 +00002825 case IITDescriptor::Struct: {
2826 StructType *ST = dyn_cast<StructType>(Ty);
Craig Topperc6207612014-04-09 06:08:46 +00002827 if (!ST || ST->getNumElements() != D.Struct_NumElements)
Chris Lattner144b6192012-05-27 19:37:05 +00002828 return true;
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002829
Chris Lattner144b6192012-05-27 19:37:05 +00002830 for (unsigned i = 0, e = D.Struct_NumElements; i != e; ++i)
2831 if (VerifyIntrinsicType(ST->getElementType(i), Infos, ArgTys))
2832 return true;
2833 return false;
2834 }
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002835
Chris Lattner144b6192012-05-27 19:37:05 +00002836 case IITDescriptor::Argument:
Benjamin Kramerbde91762012-06-02 10:20:22 +00002837 // Two cases here - If this is the second occurrence of an argument, verify
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002838 // that the later instance matches the previous instance.
Chris Lattner144b6192012-05-27 19:37:05 +00002839 if (D.getArgumentNumber() < ArgTys.size())
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002840 return Ty != ArgTys[D.getArgumentNumber()];
2841
Chris Lattner144b6192012-05-27 19:37:05 +00002842 // Otherwise, if this is the first instance of an argument, record it and
2843 // verify the "Any" kind.
2844 assert(D.getArgumentNumber() == ArgTys.size() && "Table consistency error");
2845 ArgTys.push_back(Ty);
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002846
Chris Lattner144b6192012-05-27 19:37:05 +00002847 switch (D.getArgumentKind()) {
Ramkumar Ramachandra75a4f352015-01-22 20:14:38 +00002848 case IITDescriptor::AK_Any: return false; // Success
Chris Lattner144b6192012-05-27 19:37:05 +00002849 case IITDescriptor::AK_AnyInteger: return !Ty->isIntOrIntVectorTy();
2850 case IITDescriptor::AK_AnyFloat: return !Ty->isFPOrFPVectorTy();
2851 case IITDescriptor::AK_AnyVector: return !isa<VectorType>(Ty);
2852 case IITDescriptor::AK_AnyPointer: return !isa<PointerType>(Ty);
2853 }
2854 llvm_unreachable("all argument kinds not covered");
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002855
Tim Northoveraa3cf1e2014-03-28 12:31:39 +00002856 case IITDescriptor::ExtendArgument: {
Chris Lattner144b6192012-05-27 19:37:05 +00002857 // This may only be used when referring to a previous vector argument.
Tim Northoveraa3cf1e2014-03-28 12:31:39 +00002858 if (D.getArgumentNumber() >= ArgTys.size())
2859 return true;
Chris Lattner144b6192012-05-27 19:37:05 +00002860
Tim Northoveraa3cf1e2014-03-28 12:31:39 +00002861 Type *NewTy = ArgTys[D.getArgumentNumber()];
2862 if (VectorType *VTy = dyn_cast<VectorType>(NewTy))
2863 NewTy = VectorType::getExtendedElementVectorType(VTy);
2864 else if (IntegerType *ITy = dyn_cast<IntegerType>(NewTy))
2865 NewTy = IntegerType::get(ITy->getContext(), 2 * ITy->getBitWidth());
2866 else
2867 return true;
2868
2869 return Ty != NewTy;
2870 }
2871 case IITDescriptor::TruncArgument: {
Chris Lattner144b6192012-05-27 19:37:05 +00002872 // This may only be used when referring to a previous vector argument.
Tim Northoveraa3cf1e2014-03-28 12:31:39 +00002873 if (D.getArgumentNumber() >= ArgTys.size())
2874 return true;
2875
2876 Type *NewTy = ArgTys[D.getArgumentNumber()];
2877 if (VectorType *VTy = dyn_cast<VectorType>(NewTy))
2878 NewTy = VectorType::getTruncatedElementVectorType(VTy);
2879 else if (IntegerType *ITy = dyn_cast<IntegerType>(NewTy))
2880 NewTy = IntegerType::get(ITy->getContext(), ITy->getBitWidth() / 2);
2881 else
2882 return true;
2883
2884 return Ty != NewTy;
2885 }
Tim Northover4516de32014-03-29 07:04:54 +00002886 case IITDescriptor::HalfVecArgument:
2887 // This may only be used when referring to a previous vector argument.
2888 return D.getArgumentNumber() >= ArgTys.size() ||
2889 !isa<VectorType>(ArgTys[D.getArgumentNumber()]) ||
2890 VectorType::getHalfElementsVectorType(
2891 cast<VectorType>(ArgTys[D.getArgumentNumber()])) != Ty;
Elena Demikhovskyf1de34b2014-12-04 09:40:44 +00002892 case IITDescriptor::SameVecWidthArgument: {
2893 if (D.getArgumentNumber() >= ArgTys.size())
2894 return true;
2895 VectorType * ReferenceType =
2896 dyn_cast<VectorType>(ArgTys[D.getArgumentNumber()]);
2897 VectorType *ThisArgType = dyn_cast<VectorType>(Ty);
2898 if (!ThisArgType || !ReferenceType ||
2899 (ReferenceType->getVectorNumElements() !=
2900 ThisArgType->getVectorNumElements()))
2901 return true;
2902 return VerifyIntrinsicType(ThisArgType->getVectorElementType(),
2903 Infos, ArgTys);
2904 }
Elena Demikhovskyfb81b932014-12-25 07:49:20 +00002905 case IITDescriptor::PtrToArgument: {
2906 if (D.getArgumentNumber() >= ArgTys.size())
2907 return true;
2908 Type * ReferenceType = ArgTys[D.getArgumentNumber()];
2909 PointerType *ThisArgType = dyn_cast<PointerType>(Ty);
2910 return (!ThisArgType || ThisArgType->getElementType() != ReferenceType);
2911 }
Elena Demikhovsky23a485a2015-02-08 08:27:19 +00002912 case IITDescriptor::VecOfPtrsToElt: {
2913 if (D.getArgumentNumber() >= ArgTys.size())
2914 return true;
2915 VectorType * ReferenceType =
2916 dyn_cast<VectorType> (ArgTys[D.getArgumentNumber()]);
2917 VectorType *ThisArgVecTy = dyn_cast<VectorType>(Ty);
2918 if (!ThisArgVecTy || !ReferenceType ||
2919 (ReferenceType->getVectorNumElements() !=
2920 ThisArgVecTy->getVectorNumElements()))
2921 return true;
2922 PointerType *ThisArgEltTy =
2923 dyn_cast<PointerType>(ThisArgVecTy->getVectorElementType());
2924 if (!ThisArgEltTy)
2925 return true;
2926 return (!(ThisArgEltTy->getElementType() ==
2927 ReferenceType->getVectorElementType()));
2928 }
Chris Lattner144b6192012-05-27 19:37:05 +00002929 }
2930 llvm_unreachable("unhandled");
2931}
Bob Wilsonf76486a2009-01-07 00:09:01 +00002932
Andrew Tricka2efd992013-10-31 17:18:11 +00002933/// \brief Verify if the intrinsic has variable arguments.
2934/// This method is intended to be called after all the fixed arguments have been
2935/// verified first.
2936///
2937/// This method returns true on error and does not print an error message.
2938bool
2939Verifier::VerifyIntrinsicIsVarArg(bool isVarArg,
2940 ArrayRef<Intrinsic::IITDescriptor> &Infos) {
2941 using namespace Intrinsic;
2942
2943 // If there are no descriptors left, then it can't be a vararg.
2944 if (Infos.empty())
David Blaikiedc3f01e2015-03-09 01:57:13 +00002945 return isVarArg;
Andrew Tricka2efd992013-10-31 17:18:11 +00002946
2947 // There should be only one descriptor remaining at this point.
2948 if (Infos.size() != 1)
2949 return true;
2950
2951 // Check and verify the descriptor.
2952 IITDescriptor D = Infos.front();
2953 Infos = Infos.slice(1);
2954 if (D.Kind == IITDescriptor::VarArg)
David Blaikiedc3f01e2015-03-09 01:57:13 +00002955 return !isVarArg;
Andrew Tricka2efd992013-10-31 17:18:11 +00002956
2957 return true;
2958}
2959
Chris Lattnerbb346d02003-05-08 03:47:33 +00002960/// visitIntrinsicFunction - Allow intrinsics to be verified in different ways.
Misha Brukmanc566ca362004-03-02 00:22:19 +00002961///
Brian Gaeke960707c2003-11-11 22:41:34 +00002962void Verifier::visitIntrinsicFunctionCall(Intrinsic::ID ID, CallInst &CI) {
Chris Lattnerbb346d02003-05-08 03:47:33 +00002963 Function *IF = CI.getCalledFunction();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002964 Assert(IF->isDeclaration(), "Intrinsic functions should never be defined!",
2965 IF);
Nick Lewycky3fc89802009-09-07 20:44:51 +00002966
Chris Lattner144b6192012-05-27 19:37:05 +00002967 // Verify that the intrinsic prototype lines up with what the .td files
2968 // describe.
2969 FunctionType *IFTy = IF->getFunctionType();
Andrew Tricka2efd992013-10-31 17:18:11 +00002970 bool IsVarArg = IFTy->isVarArg();
Matt Arsenaultc4c92262013-07-20 17:46:00 +00002971
Chris Lattner144b6192012-05-27 19:37:05 +00002972 SmallVector<Intrinsic::IITDescriptor, 8> Table;
2973 getIntrinsicInfoTableEntries(ID, Table);
2974 ArrayRef<Intrinsic::IITDescriptor> TableRef = Table;
Nick Lewycky3fc89802009-09-07 20:44:51 +00002975
Chris Lattner144b6192012-05-27 19:37:05 +00002976 SmallVector<Type *, 4> ArgTys;
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002977 Assert(!VerifyIntrinsicType(IFTy->getReturnType(), TableRef, ArgTys),
2978 "Intrinsic has incorrect return type!", IF);
Chris Lattner144b6192012-05-27 19:37:05 +00002979 for (unsigned i = 0, e = IFTy->getNumParams(); i != e; ++i)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002980 Assert(!VerifyIntrinsicType(IFTy->getParamType(i), TableRef, ArgTys),
2981 "Intrinsic has incorrect argument type!", IF);
Andrew Tricka2efd992013-10-31 17:18:11 +00002982
2983 // Verify if the intrinsic call matches the vararg property.
2984 if (IsVarArg)
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002985 Assert(!VerifyIntrinsicIsVarArg(IsVarArg, TableRef),
2986 "Intrinsic was not defined with variable arguments!", IF);
Andrew Tricka2efd992013-10-31 17:18:11 +00002987 else
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002988 Assert(!VerifyIntrinsicIsVarArg(IsVarArg, TableRef),
2989 "Callsite was not defined with variable arguments!", IF);
Andrew Tricka2efd992013-10-31 17:18:11 +00002990
2991 // All descriptors should be absorbed by now.
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002992 Assert(TableRef.empty(), "Intrinsic has too few arguments!", IF);
Chris Lattner144b6192012-05-27 19:37:05 +00002993
2994 // Now that we have the intrinsic ID and the actual argument types (and we
2995 // know they are legal for the intrinsic!) get the intrinsic name through the
2996 // usual means. This allows us to verify the mangling of argument types into
2997 // the name.
Justin Bogner28e1cf62014-03-10 21:22:44 +00002998 const std::string ExpectedName = Intrinsic::getName(ID, ArgTys);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00002999 Assert(ExpectedName == IF->getName(),
3000 "Intrinsic name not mangled correctly for type arguments! "
3001 "Should be: " +
3002 ExpectedName,
3003 IF);
Matt Arsenaultc4c92262013-07-20 17:46:00 +00003004
Chris Lattner588096e2009-12-28 09:07:21 +00003005 // If the intrinsic takes MDNode arguments, verify that they are either global
3006 // or are local to *this* function.
Bill Wendlingcfcd0e12010-06-07 19:18:58 +00003007 for (unsigned i = 0, e = CI.getNumArgOperands(); i != e; ++i)
Duncan P. N. Exon Smith5bf8fef2014-12-09 18:38:53 +00003008 if (auto *MD = dyn_cast<MetadataAsValue>(CI.getArgOperand(i)))
3009 visitMetadataAsValue(*MD, CI.getParent()->getParent());
Victor Hernandez0471abd2009-12-18 20:09:14 +00003010
Gordon Henriksena2f3e132007-09-17 20:30:04 +00003011 switch (ID) {
3012 default:
3013 break;
Chandler Carruth026cc372011-12-12 04:36:02 +00003014 case Intrinsic::ctlz: // llvm.ctlz
3015 case Intrinsic::cttz: // llvm.cttz
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003016 Assert(isa<ConstantInt>(CI.getArgOperand(1)),
3017 "is_zero_undef argument of bit counting intrinsics must be a "
3018 "constant int",
3019 &CI);
Chandler Carruth026cc372011-12-12 04:36:02 +00003020 break;
Duncan P. N. Exon Smith959299e2015-03-15 00:50:57 +00003021 case Intrinsic::dbg_declare: // llvm.dbg.declare
3022 Assert(isa<MetadataAsValue>(CI.getArgOperand(0)),
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003023 "invalid llvm.dbg.declare intrinsic call 1", &CI);
Duncan P. N. Exon Smith166121a2015-03-15 01:21:30 +00003024 visitDbgIntrinsic("declare", cast<DbgDeclareInst>(CI));
3025 break;
3026 case Intrinsic::dbg_value: // llvm.dbg.value
3027 visitDbgIntrinsic("value", cast<DbgValueInst>(CI));
Duncan P. N. Exon Smith959299e2015-03-15 00:50:57 +00003028 break;
Chris Lattnerdd708342008-11-21 16:42:48 +00003029 case Intrinsic::memcpy:
3030 case Intrinsic::memmove:
Owen Anderson63fbf102015-03-02 09:35:06 +00003031 case Intrinsic::memset: {
3032 ConstantInt *AlignCI = dyn_cast<ConstantInt>(CI.getArgOperand(3));
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003033 Assert(AlignCI,
3034 "alignment argument of memory intrinsics must be a constant int",
3035 &CI);
Owen Anderson63fbf102015-03-02 09:35:06 +00003036 const APInt &AlignVal = AlignCI->getValue();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003037 Assert(AlignCI->isZero() || AlignVal.isPowerOf2(),
3038 "alignment argument of memory intrinsics must be a power of 2", &CI);
3039 Assert(isa<ConstantInt>(CI.getArgOperand(4)),
3040 "isvolatile argument of memory intrinsics must be a constant int",
3041 &CI);
Chris Lattnerecded9a2008-08-23 05:31:10 +00003042 break;
Owen Anderson63fbf102015-03-02 09:35:06 +00003043 }
Bill Wendling05604e02008-08-23 09:46:46 +00003044 case Intrinsic::gcroot:
3045 case Intrinsic::gcwrite:
Chris Lattner25852062008-08-24 20:46:13 +00003046 case Intrinsic::gcread:
3047 if (ID == Intrinsic::gcroot) {
Gordon Henriksenbf40eee2008-10-25 16:28:35 +00003048 AllocaInst *AI =
Gabor Greif4d181652010-06-23 13:56:57 +00003049 dyn_cast<AllocaInst>(CI.getArgOperand(0)->stripPointerCasts());
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003050 Assert(AI, "llvm.gcroot parameter #1 must be an alloca.", &CI);
3051 Assert(isa<Constant>(CI.getArgOperand(1)),
3052 "llvm.gcroot parameter #2 must be a constant.", &CI);
Talin2e59f142010-09-30 20:23:47 +00003053 if (!AI->getType()->getElementType()->isPointerTy()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003054 Assert(!isa<ConstantPointerNull>(CI.getArgOperand(1)),
3055 "llvm.gcroot parameter #1 must either be a pointer alloca, "
3056 "or argument #2 must be a non-null constant.",
3057 &CI);
Talin2e59f142010-09-30 20:23:47 +00003058 }
Chris Lattner25852062008-08-24 20:46:13 +00003059 }
Nick Lewycky3fc89802009-09-07 20:44:51 +00003060
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003061 Assert(CI.getParent()->getParent()->hasGC(),
3062 "Enclosing function does not use GC.", &CI);
Chris Lattner25852062008-08-24 20:46:13 +00003063 break;
Duncan Sandsf72ff0c2007-09-29 16:25:54 +00003064 case Intrinsic::init_trampoline:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003065 Assert(isa<Function>(CI.getArgOperand(1)->stripPointerCasts()),
3066 "llvm.init_trampoline parameter #2 must resolve to a function.",
3067 &CI);
Gordon Henriksen9157c492007-12-25 02:02:10 +00003068 break;
Chris Lattner229f7652008-10-16 06:00:36 +00003069 case Intrinsic::prefetch:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003070 Assert(isa<ConstantInt>(CI.getArgOperand(1)) &&
3071 isa<ConstantInt>(CI.getArgOperand(2)) &&
3072 cast<ConstantInt>(CI.getArgOperand(1))->getZExtValue() < 2 &&
3073 cast<ConstantInt>(CI.getArgOperand(2))->getZExtValue() < 4,
3074 "invalid arguments to llvm.prefetch", &CI);
Chris Lattner229f7652008-10-16 06:00:36 +00003075 break;
Bill Wendlingd8e312d2008-11-18 23:09:31 +00003076 case Intrinsic::stackprotector:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003077 Assert(isa<AllocaInst>(CI.getArgOperand(1)->stripPointerCasts()),
3078 "llvm.stackprotector parameter #2 must resolve to an alloca.", &CI);
Bill Wendlingd8e312d2008-11-18 23:09:31 +00003079 break;
Nick Lewycky9bc89042009-10-13 07:57:33 +00003080 case Intrinsic::lifetime_start:
3081 case Intrinsic::lifetime_end:
3082 case Intrinsic::invariant_start:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003083 Assert(isa<ConstantInt>(CI.getArgOperand(0)),
3084 "size argument of memory use markers must be a constant integer",
3085 &CI);
Nick Lewycky9bc89042009-10-13 07:57:33 +00003086 break;
3087 case Intrinsic::invariant_end:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003088 Assert(isa<ConstantInt>(CI.getArgOperand(1)),
3089 "llvm.invariant.end parameter #2 must be a constant integer", &CI);
Nick Lewycky9bc89042009-10-13 07:57:33 +00003090 break;
Reid Klecknere9b89312015-01-13 00:48:10 +00003091
Reid Klecknercfb9ce52015-03-05 18:26:34 +00003092 case Intrinsic::frameescape: {
Reid Klecknere9b89312015-01-13 00:48:10 +00003093 BasicBlock *BB = CI.getParent();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003094 Assert(BB == &BB->getParent()->front(),
3095 "llvm.frameescape used outside of entry block", &CI);
3096 Assert(!SawFrameEscape,
3097 "multiple calls to llvm.frameescape in one function", &CI);
Reid Klecknercfb9ce52015-03-05 18:26:34 +00003098 for (Value *Arg : CI.arg_operands()) {
3099 auto *AI = dyn_cast<AllocaInst>(Arg->stripPointerCasts());
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003100 Assert(AI && AI->isStaticAlloca(),
3101 "llvm.frameescape only accepts static allocas", &CI);
Reid Klecknercfb9ce52015-03-05 18:26:34 +00003102 }
3103 FrameEscapeInfo[BB->getParent()].first = CI.getNumArgOperands();
3104 SawFrameEscape = true;
Reid Klecknere9b89312015-01-13 00:48:10 +00003105 break;
3106 }
Reid Kleckner3542ace2015-01-13 01:51:34 +00003107 case Intrinsic::framerecover: {
Reid Klecknere9b89312015-01-13 00:48:10 +00003108 Value *FnArg = CI.getArgOperand(0)->stripPointerCasts();
3109 Function *Fn = dyn_cast<Function>(FnArg);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003110 Assert(Fn && !Fn->isDeclaration(),
3111 "llvm.framerecover first "
3112 "argument must be function defined in this module",
3113 &CI);
Reid Klecknercfb9ce52015-03-05 18:26:34 +00003114 auto *IdxArg = dyn_cast<ConstantInt>(CI.getArgOperand(2));
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003115 Assert(IdxArg, "idx argument of llvm.framerecover must be a constant int",
3116 &CI);
Reid Klecknercfb9ce52015-03-05 18:26:34 +00003117 auto &Entry = FrameEscapeInfo[Fn];
3118 Entry.second = unsigned(
3119 std::max(uint64_t(Entry.second), IdxArg->getLimitedValue(~0U) + 1));
Reid Klecknere9b89312015-01-13 00:48:10 +00003120 break;
3121 }
3122
David Majnemerb919dd62015-03-27 04:17:07 +00003123 case Intrinsic::eh_parentframe: {
3124 auto *AI = dyn_cast<AllocaInst>(CI.getArgOperand(0)->stripPointerCasts());
3125 Assert(AI && AI->isStaticAlloca(),
3126 "llvm.eh.parentframe requires a static alloca", &CI);
3127 break;
3128 }
3129
Reid Kleckner7e9546b2015-03-25 20:10:36 +00003130 case Intrinsic::eh_unwindhelp: {
3131 auto *AI = dyn_cast<AllocaInst>(CI.getArgOperand(0)->stripPointerCasts());
3132 Assert(AI && AI->isStaticAlloca(),
3133 "llvm.eh.unwindhelp requires a static alloca", &CI);
3134 break;
3135 }
3136
Philip Reames1ffa9372015-01-30 23:28:05 +00003137 case Intrinsic::experimental_gc_statepoint:
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003138 Assert(!CI.isInlineAsm(),
3139 "gc.statepoint support for inline assembly unimplemented", &CI);
Philip Reamese1bf2702015-03-27 05:09:33 +00003140 Assert(CI.getParent()->getParent()->hasGC(),
3141 "Enclosing function does not use GC.", &CI);
Philip Reames0285c742015-02-03 23:18:47 +00003142
3143 VerifyStatepoint(ImmutableCallSite(&CI));
Philip Reames337c4bd2014-12-01 21:18:12 +00003144 break;
Philip Reames337c4bd2014-12-01 21:18:12 +00003145 case Intrinsic::experimental_gc_result_int:
3146 case Intrinsic::experimental_gc_result_float:
Ramkumar Ramachandra75a4f352015-01-22 20:14:38 +00003147 case Intrinsic::experimental_gc_result_ptr:
3148 case Intrinsic::experimental_gc_result: {
Philip Reamese1bf2702015-03-27 05:09:33 +00003149 Assert(CI.getParent()->getParent()->hasGC(),
3150 "Enclosing function does not use GC.", &CI);
Philip Reames337c4bd2014-12-01 21:18:12 +00003151 // Are we tied to a statepoint properly?
3152 CallSite StatepointCS(CI.getArgOperand(0));
Philip Reames76ebd152015-01-07 22:48:01 +00003153 const Function *StatepointFn =
3154 StatepointCS.getInstruction() ? StatepointCS.getCalledFunction() : nullptr;
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003155 Assert(StatepointFn && StatepointFn->isDeclaration() &&
3156 StatepointFn->getIntrinsicID() ==
3157 Intrinsic::experimental_gc_statepoint,
3158 "gc.result operand #1 must be from a statepoint", &CI,
3159 CI.getArgOperand(0));
Philip Reames38303a32014-12-03 19:53:15 +00003160
Philip Reamesb23713a2014-12-03 22:23:24 +00003161 // Assert that result type matches wrapped callee.
3162 const Value *Target = StatepointCS.getArgument(0);
3163 const PointerType *PT = cast<PointerType>(Target->getType());
3164 const FunctionType *TargetFuncType =
3165 cast<FunctionType>(PT->getElementType());
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003166 Assert(CI.getType() == TargetFuncType->getReturnType(),
3167 "gc.result result type does not match wrapped callee", &CI);
Philip Reames337c4bd2014-12-01 21:18:12 +00003168 break;
3169 }
3170 case Intrinsic::experimental_gc_relocate: {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003171 Assert(CI.getNumArgOperands() == 3, "wrong number of arguments", &CI);
Igor Laevsky9570ff92015-02-19 11:28:47 +00003172
3173 // Check that this relocate is correctly tied to the statepoint
3174
3175 // This is case for relocate on the unwinding path of an invoke statepoint
3176 if (ExtractValueInst *ExtractValue =
3177 dyn_cast<ExtractValueInst>(CI.getArgOperand(0))) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003178 Assert(isa<LandingPadInst>(ExtractValue->getAggregateOperand()),
3179 "gc relocate on unwind path incorrectly linked to the statepoint",
3180 &CI);
Igor Laevsky9570ff92015-02-19 11:28:47 +00003181
3182 const BasicBlock *invokeBB =
3183 ExtractValue->getParent()->getUniquePredecessor();
3184
3185 // Landingpad relocates should have only one predecessor with invoke
3186 // statepoint terminator
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003187 Assert(invokeBB, "safepoints should have unique landingpads",
3188 ExtractValue->getParent());
3189 Assert(invokeBB->getTerminator(), "safepoint block should be well formed",
3190 invokeBB);
3191 Assert(isStatepoint(invokeBB->getTerminator()),
3192 "gc relocate should be linked to a statepoint", invokeBB);
Igor Laevsky9570ff92015-02-19 11:28:47 +00003193 }
3194 else {
3195 // In all other cases relocate should be tied to the statepoint directly.
3196 // This covers relocates on a normal return path of invoke statepoint and
3197 // relocates of a call statepoint
3198 auto Token = CI.getArgOperand(0);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003199 Assert(isa<Instruction>(Token) && isStatepoint(cast<Instruction>(Token)),
3200 "gc relocate is incorrectly tied to the statepoint", &CI, Token);
Igor Laevsky9570ff92015-02-19 11:28:47 +00003201 }
3202
3203 // Verify rest of the relocate arguments
3204
3205 GCRelocateOperands ops(&CI);
3206 ImmutableCallSite StatepointCS(ops.statepoint());
Philip Reames337c4bd2014-12-01 21:18:12 +00003207
3208 // Both the base and derived must be piped through the safepoint
3209 Value* Base = CI.getArgOperand(1);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003210 Assert(isa<ConstantInt>(Base),
3211 "gc.relocate operand #2 must be integer offset", &CI);
3212
Philip Reames337c4bd2014-12-01 21:18:12 +00003213 Value* Derived = CI.getArgOperand(2);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003214 Assert(isa<ConstantInt>(Derived),
3215 "gc.relocate operand #3 must be integer offset", &CI);
Philip Reames337c4bd2014-12-01 21:18:12 +00003216
3217 const int BaseIndex = cast<ConstantInt>(Base)->getZExtValue();
3218 const int DerivedIndex = cast<ConstantInt>(Derived)->getZExtValue();
3219 // Check the bounds
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003220 Assert(0 <= BaseIndex && BaseIndex < (int)StatepointCS.arg_size(),
3221 "gc.relocate: statepoint base index out of bounds", &CI);
3222 Assert(0 <= DerivedIndex && DerivedIndex < (int)StatepointCS.arg_size(),
3223 "gc.relocate: statepoint derived index out of bounds", &CI);
Philip Reames76ebd152015-01-07 22:48:01 +00003224
3225 // Check that BaseIndex and DerivedIndex fall within the 'gc parameters'
3226 // section of the statepoint's argument
Owen Anderson3e7e67b2015-03-10 05:58:21 +00003227 Assert(StatepointCS.arg_size() > 0,
3228 "gc.statepoint: insufficient arguments");
Owen Andersona3c68fd2015-03-11 06:57:30 +00003229 Assert(isa<ConstantInt>(StatepointCS.getArgument(1)),
3230 "gc.statement: number of call arguments must be constant integer");
Owen Anderson3e7e67b2015-03-10 05:58:21 +00003231 const unsigned NumCallArgs =
Philip Reames76ebd152015-01-07 22:48:01 +00003232 cast<ConstantInt>(StatepointCS.getArgument(1))->getZExtValue();
Owen Anderson3e7e67b2015-03-10 05:58:21 +00003233 Assert(StatepointCS.arg_size() > NumCallArgs+3,
3234 "gc.statepoint: mismatch in number of call arguments");
Owen Andersona3c68fd2015-03-11 06:57:30 +00003235 Assert(isa<ConstantInt>(StatepointCS.getArgument(NumCallArgs+3)),
3236 "gc.statepoint: number of deoptimization arguments must be "
3237 "a constant integer");
Philip Reames76ebd152015-01-07 22:48:01 +00003238 const int NumDeoptArgs =
3239 cast<ConstantInt>(StatepointCS.getArgument(NumCallArgs + 3))->getZExtValue();
3240 const int GCParamArgsStart = NumCallArgs + NumDeoptArgs + 4;
3241 const int GCParamArgsEnd = StatepointCS.arg_size();
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003242 Assert(GCParamArgsStart <= BaseIndex && BaseIndex < GCParamArgsEnd,
3243 "gc.relocate: statepoint base index doesn't fall within the "
3244 "'gc parameters' section of the statepoint call",
3245 &CI);
3246 Assert(GCParamArgsStart <= DerivedIndex && DerivedIndex < GCParamArgsEnd,
3247 "gc.relocate: statepoint derived index doesn't fall within the "
3248 "'gc parameters' section of the statepoint call",
3249 &CI);
Philip Reames38303a32014-12-03 19:53:15 +00003250
Philip Reamesb23713a2014-12-03 22:23:24 +00003251 // Assert that the result type matches the type of the relocated pointer
3252 GCRelocateOperands Operands(&CI);
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003253 Assert(Operands.derivedPtr()->getType() == CI.getType(),
3254 "gc.relocate: relocating a pointer shouldn't change its type", &CI);
Philip Reames337c4bd2014-12-01 21:18:12 +00003255 break;
3256 }
3257 };
Chris Lattner0e851da2002-04-18 20:37:37 +00003258}
3259
Duncan P. N. Exon Smith166121a2015-03-15 01:21:30 +00003260template <class DbgIntrinsicTy>
3261void Verifier::visitDbgIntrinsic(StringRef Kind, DbgIntrinsicTy &DII) {
3262 auto *MD = cast<MetadataAsValue>(DII.getArgOperand(0))->getMetadata();
3263 Assert(isa<ValueAsMetadata>(MD) ||
3264 (isa<MDNode>(MD) && !cast<MDNode>(MD)->getNumOperands()),
3265 "invalid llvm.dbg." + Kind + " intrinsic address/value", &DII, MD);
3266 Assert(isa<MDLocalVariable>(DII.getRawVariable()),
3267 "invalid llvm.dbg." + Kind + " intrinsic variable", &DII,
3268 DII.getRawVariable());
3269 Assert(isa<MDExpression>(DII.getRawExpression()),
3270 "invalid llvm.dbg." + Kind + " intrinsic expression", &DII,
3271 DII.getRawExpression());
Duncan P. N. Exon Smith166121a2015-03-15 01:21:30 +00003272}
3273
Duncan P. N. Exon Smith8b866d12015-03-20 00:48:23 +00003274void Verifier::verifyDebugInfo() {
3275 // Run the debug info verifier only if the regular verifier succeeds, since
3276 // sometimes checks that have already failed will cause crashes here.
3277 if (EverBroken || !VerifyDebugInfo)
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +00003278 return;
3279
3280 DebugInfoFinder Finder;
3281 Finder.processModule(*M);
3282 processInstructions(Finder);
3283
Manman Ren74c61b92013-07-19 00:31:03 +00003284 // Verify Debug Info.
Duncan P. N. Exon Smith0d640012014-04-15 17:28:26 +00003285 //
3286 // NOTE: The loud braces are necessary for MSVC compatibility.
3287 for (DICompileUnit CU : Finder.compile_units()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003288 Assert(CU.Verify(), "DICompileUnit does not Verify!", CU);
Duncan P. N. Exon Smith0d640012014-04-15 17:28:26 +00003289 }
3290 for (DISubprogram S : Finder.subprograms()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003291 Assert(S.Verify(), "DISubprogram does not Verify!", S);
Duncan P. N. Exon Smith0d640012014-04-15 17:28:26 +00003292 }
3293 for (DIGlobalVariable GV : Finder.global_variables()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003294 Assert(GV.Verify(), "DIGlobalVariable does not Verify!", GV);
Duncan P. N. Exon Smith0d640012014-04-15 17:28:26 +00003295 }
3296 for (DIType T : Finder.types()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003297 Assert(T.Verify(), "DIType does not Verify!", T);
Duncan P. N. Exon Smith0d640012014-04-15 17:28:26 +00003298 }
3299 for (DIScope S : Finder.scopes()) {
Benjamin Kramerf027ad72015-03-07 21:15:40 +00003300 Assert(S.Verify(), "DIScope does not Verify!", S);
Duncan P. N. Exon Smith0d640012014-04-15 17:28:26 +00003301 }
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +00003302}
3303
Duncan P. N. Exon Smith8b866d12015-03-20 00:48:23 +00003304void Verifier::processInstructions(DebugInfoFinder &Finder) {
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +00003305 for (const Function &F : *M)
3306 for (auto I = inst_begin(&F), E = inst_end(&F); I != E; ++I) {
Duncan P. N. Exon Smithde36e802014-11-11 21:30:22 +00003307 if (MDNode *MD = I->getMetadata(LLVMContext::MD_dbg))
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +00003308 Finder.processLocation(*M, DILocation(MD));
3309 if (const CallInst *CI = dyn_cast<CallInst>(&*I))
3310 processCallInst(Finder, *CI);
Alon Mishnead312152014-03-18 09:41:07 +00003311 }
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +00003312}
3313
Duncan P. N. Exon Smith8b866d12015-03-20 00:48:23 +00003314void Verifier::processCallInst(DebugInfoFinder &Finder, const CallInst &CI) {
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +00003315 if (Function *F = CI.getCalledFunction())
3316 if (Intrinsic::ID ID = (Intrinsic::ID)F->getIntrinsicID())
3317 switch (ID) {
Duncan P. N. Exon Smith9255a552015-03-16 21:05:33 +00003318 case Intrinsic::dbg_declare:
3319 Finder.processDeclare(*M, cast<DbgDeclareInst>(&CI));
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +00003320 break;
Duncan P. N. Exon Smith9255a552015-03-16 21:05:33 +00003321 case Intrinsic::dbg_value:
3322 Finder.processValue(*M, cast<DbgValueInst>(&CI));
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +00003323 break;
3324 default:
3325 break;
3326 }
Manman Ren74c61b92013-07-19 00:31:03 +00003327}
3328
Chris Lattner0e851da2002-04-18 20:37:37 +00003329//===----------------------------------------------------------------------===//
3330// Implement the public interfaces to this file...
3331//===----------------------------------------------------------------------===//
3332
Chandler Carruth043949d2014-01-19 02:22:18 +00003333bool llvm::verifyFunction(const Function &f, raw_ostream *OS) {
Chandler Carruthbf2b6522014-01-17 11:09:34 +00003334 Function &F = const_cast<Function &>(f);
Reid Spencer5301e7c2007-01-30 20:08:39 +00003335 assert(!F.isDeclaration() && "Cannot verify external functions");
Misha Brukmanb1c93172005-04-21 23:48:37 +00003336
Chandler Carruth043949d2014-01-19 02:22:18 +00003337 raw_null_ostream NullStr;
3338 Verifier V(OS ? *OS : NullStr);
3339
3340 // Note that this function's return value is inverted from what you would
3341 // expect of a function called "verify".
3342 return !V.verify(F);
Chris Lattnerd02f08d2002-02-20 17:55:43 +00003343}
3344
Chandler Carruth043949d2014-01-19 02:22:18 +00003345bool llvm::verifyModule(const Module &M, raw_ostream *OS) {
3346 raw_null_ostream NullStr;
3347 Verifier V(OS ? *OS : NullStr);
Nick Lewycky3fc89802009-09-07 20:44:51 +00003348
Chandler Carruth043949d2014-01-19 02:22:18 +00003349 bool Broken = false;
3350 for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
Rafael Espindolad4bcefc2014-10-24 18:13:04 +00003351 if (!I->isDeclaration() && !I->isMaterializable())
Chandler Carruth043949d2014-01-19 02:22:18 +00003352 Broken |= !V.verify(*I);
3353
3354 // Note that this function's return value is inverted from what you would
3355 // expect of a function called "verify".
Duncan P. N. Exon Smith8b866d12015-03-20 00:48:23 +00003356 return !V.verify(M) || Broken;
Chris Lattner2f7c9632001-06-06 20:29:01 +00003357}
Chandler Carruth043949d2014-01-19 02:22:18 +00003358
3359namespace {
Chandler Carruth4d356312014-01-20 11:34:08 +00003360struct VerifierLegacyPass : public FunctionPass {
Chandler Carruth043949d2014-01-19 02:22:18 +00003361 static char ID;
3362
3363 Verifier V;
3364 bool FatalErrors;
3365
Duncan P. N. Exon Smith6fb58c42015-03-15 00:46:57 +00003366 VerifierLegacyPass() : FunctionPass(ID), V(dbgs()), FatalErrors(true) {
Chandler Carruth4d356312014-01-20 11:34:08 +00003367 initializeVerifierLegacyPassPass(*PassRegistry::getPassRegistry());
Chandler Carruth043949d2014-01-19 02:22:18 +00003368 }
Chandler Carruth4d356312014-01-20 11:34:08 +00003369 explicit VerifierLegacyPass(bool FatalErrors)
Chandler Carruth043949d2014-01-19 02:22:18 +00003370 : FunctionPass(ID), V(dbgs()), FatalErrors(FatalErrors) {
Chandler Carruth4d356312014-01-20 11:34:08 +00003371 initializeVerifierLegacyPassPass(*PassRegistry::getPassRegistry());
Chandler Carruth043949d2014-01-19 02:22:18 +00003372 }
3373
Craig Topperf398d7c2014-03-05 06:35:38 +00003374 bool runOnFunction(Function &F) override {
Chandler Carruth043949d2014-01-19 02:22:18 +00003375 if (!V.verify(F) && FatalErrors)
3376 report_fatal_error("Broken function found, compilation aborted!");
3377
3378 return false;
3379 }
3380
Craig Topperf398d7c2014-03-05 06:35:38 +00003381 bool doFinalization(Module &M) override {
Chandler Carruth043949d2014-01-19 02:22:18 +00003382 if (!V.verify(M) && FatalErrors)
3383 report_fatal_error("Broken module found, compilation aborted!");
3384
Duncan P. N. Exon Smith6ef5f282014-04-15 16:27:38 +00003385 return false;
3386 }
3387
3388 void getAnalysisUsage(AnalysisUsage &AU) const override {
3389 AU.setPreservesAll();
3390 }
3391};
Chandler Carruth043949d2014-01-19 02:22:18 +00003392}
3393
Chandler Carruth4d356312014-01-20 11:34:08 +00003394char VerifierLegacyPass::ID = 0;
3395INITIALIZE_PASS(VerifierLegacyPass, "verify", "Module Verifier", false, false)
Chandler Carruth043949d2014-01-19 02:22:18 +00003396
3397FunctionPass *llvm::createVerifierPass(bool FatalErrors) {
Chandler Carruth4d356312014-01-20 11:34:08 +00003398 return new VerifierLegacyPass(FatalErrors);
Chandler Carruth043949d2014-01-19 02:22:18 +00003399}
3400
Chandler Carruthd174ce42015-01-05 02:47:05 +00003401PreservedAnalyses VerifierPass::run(Module &M) {
3402 if (verifyModule(M, &dbgs()) && FatalErrors)
Chandler Carruth4d356312014-01-20 11:34:08 +00003403 report_fatal_error("Broken module found, compilation aborted!");
3404
3405 return PreservedAnalyses::all();
3406}
3407
Chandler Carruthd174ce42015-01-05 02:47:05 +00003408PreservedAnalyses VerifierPass::run(Function &F) {
3409 if (verifyFunction(F, &dbgs()) && FatalErrors)
Chandler Carruth4d356312014-01-20 11:34:08 +00003410 report_fatal_error("Broken function found, compilation aborted!");
3411
3412 return PreservedAnalyses::all();
3413}