Chris Lattner | cf3056d | 2003-10-13 03:32:08 +0000 | [diff] [blame] | 1 | //===- TraceValues.cpp - Value Tracing for debugging ----------------------===// |
John Criswell | b576c94 | 2003-10-20 19:43:21 +0000 | [diff] [blame] | 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file was developed by the LLVM research group and is distributed under |
| 6 | // the University of Illinois Open Source License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 9 | // |
Chris Lattner | 649f5dd | 2002-04-14 06:15:24 +0000 | [diff] [blame] | 10 | // Support for inserting LLVM code to print values at basic block and function |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 11 | // exits. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 14 | |
Chris Lattner | c56d239 | 2003-01-14 22:39:29 +0000 | [diff] [blame] | 15 | #include "llvm/Transforms/Instrumentation.h" |
Chris Lattner | 31bcdb8 | 2002-04-28 19:55:58 +0000 | [diff] [blame] | 16 | #include "llvm/Constants.h" |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 17 | #include "llvm/DerivedTypes.h" |
Misha Brukman | 47b14a4 | 2004-07-29 17:30:56 +0000 | [diff] [blame] | 18 | #include "llvm/Instructions.h" |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 19 | #include "llvm/Module.h" |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 20 | #include "llvm/Pass.h" |
Chris Lattner | 8d9e377 | 2001-10-18 05:28:08 +0000 | [diff] [blame] | 21 | #include "llvm/Assembly/Writer.h" |
Reid Spencer | 551ccae | 2004-09-01 22:55:40 +0000 | [diff] [blame] | 22 | #include "llvm/Support/CommandLine.h" |
| 23 | #include "llvm/ADT/StringExtras.h" |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 24 | #include <algorithm> |
Chris Lattner | b81a0bf | 2001-10-18 20:06:03 +0000 | [diff] [blame] | 25 | #include <sstream> |
Chris Lattner | f7703df | 2004-01-09 06:12:26 +0000 | [diff] [blame] | 26 | using namespace llvm; |
Brian Gaeke | d0fde30 | 2003-11-11 22:41:34 +0000 | [diff] [blame] | 27 | |
Chris Lattner | 5ff62e9 | 2002-07-22 02:10:13 +0000 | [diff] [blame] | 28 | static cl::opt<bool> |
| 29 | DisablePtrHashing("tracedisablehashdisable", cl::Hidden, |
Chris Lattner | af7ccd9 | 2003-04-13 03:50:14 +0000 | [diff] [blame] | 30 | cl::desc("Disable pointer hashing in the -trace or -tracem " |
| 31 | "passes")); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 32 | |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 33 | static cl::list<std::string> |
Chris Lattner | af7ccd9 | 2003-04-13 03:50:14 +0000 | [diff] [blame] | 34 | TraceFuncNames("tracefunc", cl::desc("Only trace specific functions in the " |
| 35 | "-trace or -tracem passes"), |
Chris Lattner | 80e5ed9 | 2003-01-13 00:52:14 +0000 | [diff] [blame] | 36 | cl::value_desc("function"), cl::Hidden); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 37 | |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 38 | static void TraceValuesAtBBExit(BasicBlock *BB, |
| 39 | Function *Printf, Function* HashPtrToSeqNum, |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 40 | std::vector<Instruction*> *valuesStoredInFunction); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 41 | |
| 42 | // We trace a particular function if no functions to trace were specified |
| 43 | // or if the function is in the specified list. |
| 44 | // |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 45 | inline static bool |
Chris Lattner | 80e5ed9 | 2003-01-13 00:52:14 +0000 | [diff] [blame] | 46 | TraceThisFunction(Function &F) |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 47 | { |
Chris Lattner | 80e5ed9 | 2003-01-13 00:52:14 +0000 | [diff] [blame] | 48 | if (TraceFuncNames.empty()) return true; |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 49 | |
Chris Lattner | 80e5ed9 | 2003-01-13 00:52:14 +0000 | [diff] [blame] | 50 | return std::find(TraceFuncNames.begin(), TraceFuncNames.end(), F.getName()) |
| 51 | != TraceFuncNames.end(); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 52 | } |
| 53 | |
| 54 | |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 55 | namespace { |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 56 | struct ExternalFuncs { |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 57 | Function *PrintfFunc, *HashPtrFunc, *ReleasePtrFunc; |
| 58 | Function *RecordPtrFunc, *PushOnEntryFunc, *ReleaseOnReturnFunc; |
Chris Lattner | 7e70829 | 2002-06-25 16:13:24 +0000 | [diff] [blame] | 59 | void doInitialization(Module &M); // Add prototypes for external functions |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 60 | }; |
| 61 | |
Chris Lattner | f57b845 | 2002-04-27 06:56:12 +0000 | [diff] [blame] | 62 | class InsertTraceCode : public FunctionPass { |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 63 | protected: |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 64 | ExternalFuncs externalFuncs; |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 65 | public: |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 66 | |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 67 | // Add a prototype for runtime functions not already in the program. |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 68 | // |
Chris Lattner | 7e70829 | 2002-06-25 16:13:24 +0000 | [diff] [blame] | 69 | bool doInitialization(Module &M); |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 70 | |
| 71 | //-------------------------------------------------------------------------- |
| 72 | // Function InsertCodeToTraceValues |
| 73 | // |
Chris Lattner | 649f5dd | 2002-04-14 06:15:24 +0000 | [diff] [blame] | 74 | // Inserts tracing code for all live values at basic block and/or function |
Chris Lattner | 79df7c0 | 2002-03-26 18:01:55 +0000 | [diff] [blame] | 75 | // exits as specified by `traceBasicBlockExits' and `traceFunctionExits'. |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 76 | // |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 77 | bool doit(Function *M); |
| 78 | |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 79 | virtual void handleBasicBlock(BasicBlock *BB, |
| 80 | std::vector<Instruction*> &VI) = 0; |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 81 | |
Chris Lattner | 649f5dd | 2002-04-14 06:15:24 +0000 | [diff] [blame] | 82 | // runOnFunction - This method does the work. |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 83 | // |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 84 | bool runOnFunction(Function &F); |
Chris Lattner | 97e52e4 | 2002-04-28 21:27:06 +0000 | [diff] [blame] | 85 | |
| 86 | virtual void getAnalysisUsage(AnalysisUsage &AU) const { |
Chris Lattner | cb2610e | 2002-10-21 20:00:28 +0000 | [diff] [blame] | 87 | AU.setPreservesCFG(); |
Chris Lattner | 97e52e4 | 2002-04-28 21:27:06 +0000 | [diff] [blame] | 88 | } |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 89 | }; |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 90 | |
| 91 | struct FunctionTracer : public InsertTraceCode { |
| 92 | // Ignore basic blocks here... |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 93 | virtual void handleBasicBlock(BasicBlock *BB, |
| 94 | std::vector<Instruction*> &VI) {} |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 95 | }; |
| 96 | |
| 97 | struct BasicBlockTracer : public InsertTraceCode { |
| 98 | // Trace basic blocks here... |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 99 | virtual void handleBasicBlock(BasicBlock *BB, |
| 100 | std::vector<Instruction*> &VI) { |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 101 | TraceValuesAtBBExit(BB, externalFuncs.PrintfFunc, |
| 102 | externalFuncs.HashPtrFunc, &VI); |
| 103 | } |
| 104 | }; |
| 105 | |
| 106 | // Register the passes... |
Chris Lattner | a6275cc | 2002-07-26 21:12:46 +0000 | [diff] [blame] | 107 | RegisterOpt<FunctionTracer> X("tracem","Insert Function trace code only"); |
| 108 | RegisterOpt<BasicBlockTracer> Y("trace","Insert BB and Function trace code"); |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 109 | } // end anonymous namespace |
| 110 | |
Brian Gaeke | b3b1e33 | 2004-09-30 20:14:18 +0000 | [diff] [blame] | 111 | /// Just trace functions |
| 112 | FunctionPass *llvm::createTraceValuesPassForFunction() { |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 113 | return new FunctionTracer(); |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 114 | } |
| 115 | |
Brian Gaeke | b3b1e33 | 2004-09-30 20:14:18 +0000 | [diff] [blame] | 116 | /// Trace BB's and functions |
| 117 | FunctionPass *llvm::createTraceValuesPassForBasicBlocks() { |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 118 | return new BasicBlockTracer(); |
Chris Lattner | bd0ef77 | 2002-02-26 21:46:54 +0000 | [diff] [blame] | 119 | } |
| 120 | |
Alkis Evlogimenos | 193904a | 2005-01-25 16:23:57 +0000 | [diff] [blame] | 121 | // Add a prototype for external functions used by the tracing code and require |
| 122 | // the trace library for this module. |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 123 | // |
Chris Lattner | 7e70829 | 2002-06-25 16:13:24 +0000 | [diff] [blame] | 124 | void ExternalFuncs::doInitialization(Module &M) { |
Alkis Evlogimenos | 193904a | 2005-01-25 16:23:57 +0000 | [diff] [blame] | 125 | M.addLibrary("trace"); |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 126 | const Type *SBP = PointerType::get(Type::SByteTy); |
Chris Lattner | 2aac6bf | 2002-04-04 22:19:18 +0000 | [diff] [blame] | 127 | const FunctionType *MTy = |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 128 | FunctionType::get(Type::IntTy, std::vector<const Type*>(1, SBP), true); |
Chris Lattner | 7e70829 | 2002-06-25 16:13:24 +0000 | [diff] [blame] | 129 | PrintfFunc = M.getOrInsertFunction("printf", MTy); |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 130 | |
| 131 | // uint (sbyte*) |
Chris Lattner | 5f07c87 | 2003-08-31 00:20:36 +0000 | [diff] [blame] | 132 | HashPtrFunc = M.getOrInsertFunction("HashPointerToSeqNum", Type::UIntTy, SBP, |
| 133 | 0); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 134 | |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 135 | // void (sbyte*) |
Chris Lattner | 5f07c87 | 2003-08-31 00:20:36 +0000 | [diff] [blame] | 136 | ReleasePtrFunc = M.getOrInsertFunction("ReleasePointerSeqNum", |
| 137 | Type::VoidTy, SBP, 0); |
| 138 | RecordPtrFunc = M.getOrInsertFunction("RecordPointer", |
| 139 | Type::VoidTy, SBP, 0); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 140 | |
Chris Lattner | 5f07c87 | 2003-08-31 00:20:36 +0000 | [diff] [blame] | 141 | PushOnEntryFunc = M.getOrInsertFunction("PushPointerSet", Type::VoidTy, 0); |
Chris Lattner | 7e70829 | 2002-06-25 16:13:24 +0000 | [diff] [blame] | 142 | ReleaseOnReturnFunc = M.getOrInsertFunction("ReleasePointersPopSet", |
Chris Lattner | 5f07c87 | 2003-08-31 00:20:36 +0000 | [diff] [blame] | 143 | Type::VoidTy, 0); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | |
| 147 | // Add a prototype for external functions used by the tracing code. |
| 148 | // |
Chris Lattner | 7e70829 | 2002-06-25 16:13:24 +0000 | [diff] [blame] | 149 | bool InsertTraceCode::doInitialization(Module &M) { |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 150 | externalFuncs.doInitialization(M); |
Chris Lattner | 8985107 | 2002-03-29 03:43:24 +0000 | [diff] [blame] | 151 | return false; |
Vikram S. Adve | d889330 | 2001-10-28 21:37:25 +0000 | [diff] [blame] | 152 | } |
| 153 | |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 154 | |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 155 | static inline GlobalVariable *getStringRef(Module *M, const std::string &str) { |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 156 | // Create a constant internal string reference... |
| 157 | Constant *Init = ConstantArray::get(str); |
Vikram S. Adve | 524185a | 2002-03-18 03:40:25 +0000 | [diff] [blame] | 158 | |
| 159 | // Create the global variable and record it in the module |
| 160 | // The GV will be renamed to a unique name if needed. |
Chris Lattner | 4ad02e7 | 2003-04-16 20:28:45 +0000 | [diff] [blame] | 161 | GlobalVariable *GV = new GlobalVariable(Init->getType(), true, |
| 162 | GlobalValue::InternalLinkage, Init, |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 163 | "trstr"); |
Chris Lattner | b81a0bf | 2001-10-18 20:06:03 +0000 | [diff] [blame] | 164 | M->getGlobalList().push_back(GV); |
| 165 | return GV; |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 166 | } |
| 167 | |
Vikram S. Adve | bedb00d | 2001-10-18 13:49:22 +0000 | [diff] [blame] | 168 | |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 169 | // |
| 170 | // Check if this instruction has any uses outside its basic block, |
Vikram S. Adve | 919fc8c | 2003-07-11 21:57:43 +0000 | [diff] [blame] | 171 | // or if it used by either a Call or Return instruction (ditto). |
| 172 | // (Values stored to memory within this BB are live at end of BB but are |
| 173 | // traced at the store instruction, not where they are computed.) |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 174 | // |
| 175 | static inline bool LiveAtBBExit(const Instruction* I) { |
| 176 | const BasicBlock *BB = I->getParent(); |
| 177 | for (Value::use_const_iterator U = I->use_begin(); U != I->use_end(); ++U) |
| 178 | if (const Instruction *UI = dyn_cast<Instruction>(*U)) |
| 179 | if (UI->getParent() != BB || isa<ReturnInst>(UI)) |
| 180 | return true; |
| 181 | |
| 182 | return false; |
| 183 | } |
| 184 | |
| 185 | |
| 186 | static inline bool TraceThisOpCode(unsigned opCode) { |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 187 | // Explicitly test for opCodes *not* to trace so that any new opcodes will |
Chris Lattner | 8d9e377 | 2001-10-18 05:28:08 +0000 | [diff] [blame] | 188 | // be traced by default (VoidTy's are already excluded) |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 189 | // |
Chris Lattner | 0b16ae2 | 2002-10-13 19:39:16 +0000 | [diff] [blame] | 190 | return (opCode < Instruction::OtherOpsBegin && |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 191 | opCode != Instruction::Alloca && |
Chris Lattner | 3b237fc | 2003-10-19 21:34:28 +0000 | [diff] [blame] | 192 | opCode != Instruction::PHI && |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 193 | opCode != Instruction::Cast); |
| 194 | } |
| 195 | |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 196 | |
Vikram S. Adve | 919fc8c | 2003-07-11 21:57:43 +0000 | [diff] [blame] | 197 | // Trace a value computed by an instruction if it is non-void, it is computed |
| 198 | // by a real computation, not just a copy (see TraceThisOpCode), and |
| 199 | // -- it is a load instruction: we want to check values read from memory |
| 200 | // -- or it is live at exit from the basic block (i.e., ignore local temps) |
| 201 | // |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 202 | static bool ShouldTraceValue(const Instruction *I) { |
| 203 | return |
Vikram S. Adve | 919fc8c | 2003-07-11 21:57:43 +0000 | [diff] [blame] | 204 | I->getType() != Type::VoidTy && |
| 205 | TraceThisOpCode(I->getOpcode()) && |
| 206 | (isa<LoadInst>(I) || LiveAtBBExit(I)); |
Vikram S. Adve | 631b9a3 | 2001-10-18 18:16:11 +0000 | [diff] [blame] | 207 | } |
| 208 | |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 209 | static std::string getPrintfCodeFor(const Value *V) { |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 210 | if (V == 0) return ""; |
Chris Lattner | 649f5dd | 2002-04-14 06:15:24 +0000 | [diff] [blame] | 211 | if (V->getType()->isFloatingPoint()) |
| 212 | return "%g"; |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 213 | else if (V->getType() == Type::LabelTy) |
Chris Lattner | 649f5dd | 2002-04-14 06:15:24 +0000 | [diff] [blame] | 214 | return "0x%p"; |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 215 | else if (isa<PointerType>(V->getType())) |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 216 | return DisablePtrHashing ? "0x%p" : "%d"; |
Chris Lattner | 65ad372 | 2002-09-03 01:07:35 +0000 | [diff] [blame] | 217 | else if (V->getType()->isIntegral()) |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 218 | return "%d"; |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 219 | |
Chris Lattner | 649f5dd | 2002-04-14 06:15:24 +0000 | [diff] [blame] | 220 | assert(0 && "Illegal value to print out..."); |
| 221 | return ""; |
Vikram S. Adve | bedb00d | 2001-10-18 13:49:22 +0000 | [diff] [blame] | 222 | } |
Vikram S. Adve | bedb00d | 2001-10-18 13:49:22 +0000 | [diff] [blame] | 223 | |
| 224 | |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 225 | static void InsertPrintInst(Value *V, BasicBlock *BB, Instruction *InsertBefore, |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 226 | std::string Message, |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 227 | Function *Printf, Function* HashPtrToSeqNum) { |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 228 | // Escape Message by replacing all % characters with %% chars. |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 229 | std::string Tmp; |
Chris Lattner | 1a33e31 | 2002-10-17 16:22:08 +0000 | [diff] [blame] | 230 | std::swap(Tmp, Message); |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 231 | std::string::iterator I = std::find(Tmp.begin(), Tmp.end(), '%'); |
Chris Lattner | 1a33e31 | 2002-10-17 16:22:08 +0000 | [diff] [blame] | 232 | while (I != Tmp.end()) { |
| 233 | Message.append(Tmp.begin(), I); |
| 234 | Message += "%%"; |
| 235 | ++I; // Make sure to erase the % as well... |
| 236 | Tmp.erase(Tmp.begin(), I); |
| 237 | I = std::find(Tmp.begin(), Tmp.end(), '%'); |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 238 | } |
Chris Lattner | 80e5ed9 | 2003-01-13 00:52:14 +0000 | [diff] [blame] | 239 | Message += Tmp; |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 240 | Module *Mod = BB->getParent()->getParent(); |
Chris Lattner | 8d9e377 | 2001-10-18 05:28:08 +0000 | [diff] [blame] | 241 | |
Chris Lattner | 4457163 | 2001-10-18 06:03:05 +0000 | [diff] [blame] | 242 | // Turn the marker string into a global variable... |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 243 | GlobalVariable *fmtVal = getStringRef(Mod, Message+getPrintfCodeFor(V)+"\n"); |
| 244 | |
| 245 | // Turn the format string into an sbyte * |
Reid Spencer | 518310c | 2004-07-18 00:44:37 +0000 | [diff] [blame] | 246 | Constant *GEP=ConstantExpr::getGetElementPtr(fmtVal, |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 247 | std::vector<Constant*>(2,Constant::getNullValue(Type::LongTy))); |
Chris Lattner | 4457163 | 2001-10-18 06:03:05 +0000 | [diff] [blame] | 248 | |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 249 | // Insert a call to the hash function if this is a pointer value |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 250 | if (V && isa<PointerType>(V->getType()) && !DisablePtrHashing) { |
| 251 | const Type *SBP = PointerType::get(Type::SByteTy); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 252 | if (V->getType() != SBP) // Cast pointer to be sbyte* |
| 253 | V = new CastInst(V, SBP, "Hash_cast", InsertBefore); |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 254 | |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 255 | std::vector<Value*> HashArgs(1, V); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 256 | V = new CallInst(HashPtrToSeqNum, HashArgs, "ptrSeqNum", InsertBefore); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 257 | } |
| 258 | |
Chris Lattner | 4457163 | 2001-10-18 06:03:05 +0000 | [diff] [blame] | 259 | // Insert the first print instruction to print the string flag: |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 260 | std::vector<Value*> PrintArgs; |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 261 | PrintArgs.push_back(GEP); |
| 262 | if (V) PrintArgs.push_back(V); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 263 | new CallInst(Printf, PrintArgs, "trace", InsertBefore); |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 264 | } |
| 265 | |
Chris Lattner | 4457163 | 2001-10-18 06:03:05 +0000 | [diff] [blame] | 266 | |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 267 | static void InsertVerbosePrintInst(Value *V, BasicBlock *BB, |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 268 | Instruction *InsertBefore, |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 269 | const std::string &Message, Function *Printf, |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 270 | Function* HashPtrToSeqNum) { |
Chris Lattner | 697954c | 2002-01-20 22:54:45 +0000 | [diff] [blame] | 271 | std::ostringstream OutStr; |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 272 | if (V) WriteAsOperand(OutStr, V); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 273 | InsertPrintInst(V, BB, InsertBefore, Message+OutStr.str()+" = ", |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 274 | Printf, HashPtrToSeqNum); |
Chris Lattner | 8d9e377 | 2001-10-18 05:28:08 +0000 | [diff] [blame] | 275 | } |
| 276 | |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 277 | static void |
| 278 | InsertReleaseInst(Value *V, BasicBlock *BB, |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 279 | Instruction *InsertBefore, |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 280 | Function* ReleasePtrFunc) { |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 281 | |
| 282 | const Type *SBP = PointerType::get(Type::SByteTy); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 283 | if (V->getType() != SBP) // Cast pointer to be sbyte* |
| 284 | V = new CastInst(V, SBP, "RPSN_cast", InsertBefore); |
| 285 | |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 286 | std::vector<Value*> releaseArgs(1, V); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 287 | new CallInst(ReleasePtrFunc, releaseArgs, "", InsertBefore); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 288 | } |
| 289 | |
| 290 | static void |
| 291 | InsertRecordInst(Value *V, BasicBlock *BB, |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 292 | Instruction *InsertBefore, |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 293 | Function* RecordPtrFunc) { |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 294 | const Type *SBP = PointerType::get(Type::SByteTy); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 295 | if (V->getType() != SBP) // Cast pointer to be sbyte* |
| 296 | V = new CastInst(V, SBP, "RP_cast", InsertBefore); |
| 297 | |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 298 | std::vector<Value*> releaseArgs(1, V); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 299 | new CallInst(RecordPtrFunc, releaseArgs, "", InsertBefore); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | // Look for alloca and free instructions. These are the ptrs to release. |
| 303 | // Release the free'd pointers immediately. Record the alloca'd pointers |
| 304 | // to be released on return from the current function. |
| 305 | // |
| 306 | static void |
| 307 | ReleasePtrSeqNumbers(BasicBlock *BB, |
| 308 | ExternalFuncs& externalFuncs) { |
| 309 | |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 310 | for (BasicBlock::iterator II=BB->begin(), IE = BB->end(); II != IE; ++II) |
Chris Lattner | e408e25 | 2003-04-23 16:37:45 +0000 | [diff] [blame] | 311 | if (FreeInst *FI = dyn_cast<FreeInst>(II)) |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 312 | InsertReleaseInst(FI->getOperand(0), BB, FI,externalFuncs.ReleasePtrFunc); |
Chris Lattner | e408e25 | 2003-04-23 16:37:45 +0000 | [diff] [blame] | 313 | else if (AllocaInst *AI = dyn_cast<AllocaInst>(II)) |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 314 | InsertRecordInst(AI, BB, AI->getNext(), externalFuncs.RecordPtrFunc); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 315 | } |
| 316 | |
Chris Lattner | 8d9e377 | 2001-10-18 05:28:08 +0000 | [diff] [blame] | 317 | |
Vikram S. Adve | f86b4c1 | 2002-07-08 23:37:07 +0000 | [diff] [blame] | 318 | // Insert print instructions at the end of basic block BB for each value |
| 319 | // computed in BB that is live at the end of BB, |
| 320 | // or that is stored to memory in BB. |
| 321 | // If the value is stored to memory, we load it back before printing it |
Chris Lattner | 79df7c0 | 2002-03-26 18:01:55 +0000 | [diff] [blame] | 322 | // We also return all such loaded values in the vector valuesStoredInFunction |
Chris Lattner | 649f5dd | 2002-04-14 06:15:24 +0000 | [diff] [blame] | 323 | // for printing at the exit from the function. (Note that in each invocation |
| 324 | // of the function, this will only get the last value stored for each static |
Vikram S. Adve | 631b9a3 | 2001-10-18 18:16:11 +0000 | [diff] [blame] | 325 | // store instruction). |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 326 | // |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 327 | static void TraceValuesAtBBExit(BasicBlock *BB, |
| 328 | Function *Printf, Function* HashPtrToSeqNum, |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 329 | std::vector<Instruction*> *valuesStoredInFunction) { |
Vikram S. Adve | d889330 | 2001-10-28 21:37:25 +0000 | [diff] [blame] | 330 | // Get an iterator to point to the insertion location, which is |
| 331 | // just before the terminator instruction. |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 332 | // |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 333 | TerminatorInst *InsertPos = BB->getTerminator(); |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 334 | |
Chris Lattner | 697954c | 2002-01-20 22:54:45 +0000 | [diff] [blame] | 335 | std::ostringstream OutStr; |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 336 | WriteAsOperand(OutStr, BB, false); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 337 | InsertPrintInst(0, BB, InsertPos, "LEAVING BB:" + OutStr.str(), |
| 338 | Printf, HashPtrToSeqNum); |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 339 | |
Vikram S. Adve | f86b4c1 | 2002-07-08 23:37:07 +0000 | [diff] [blame] | 340 | // Insert a print instruction for each instruction preceding InsertPos. |
| 341 | // The print instructions must go before InsertPos, so we use the |
| 342 | // instruction *preceding* InsertPos to check when to terminate the loop. |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 343 | // |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 344 | for (BasicBlock::iterator II = BB->begin(); &*II != InsertPos; ++II) { |
Chris Lattner | e408e25 | 2003-04-23 16:37:45 +0000 | [diff] [blame] | 345 | if (StoreInst *SI = dyn_cast<StoreInst>(II)) { |
Vikram S. Adve | 919fc8c | 2003-07-11 21:57:43 +0000 | [diff] [blame] | 346 | // Trace the stored value and address |
| 347 | InsertVerbosePrintInst(SI->getOperand(0), BB, InsertPos, |
| 348 | " (store value) ", Printf, HashPtrToSeqNum); |
| 349 | InsertVerbosePrintInst(SI->getOperand(1), BB, InsertPos, |
| 350 | " (store addr ) ", Printf, HashPtrToSeqNum); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 351 | } |
Vikram S. Adve | 919fc8c | 2003-07-11 21:57:43 +0000 | [diff] [blame] | 352 | else if (ShouldTraceValue(II)) |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 353 | InsertVerbosePrintInst(II, BB, InsertPos, " ", Printf, HashPtrToSeqNum); |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 354 | } |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 355 | } |
| 356 | |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 357 | static inline void InsertCodeToShowFunctionEntry(Function &F, Function *Printf, |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 358 | Function* HashPtrToSeqNum){ |
Vikram S. Adve | 631b9a3 | 2001-10-18 18:16:11 +0000 | [diff] [blame] | 359 | // Get an iterator to point to the insertion location |
Chris Lattner | 02a3be0 | 2003-09-20 14:39:18 +0000 | [diff] [blame] | 360 | BasicBlock &BB = F.getEntryBlock(); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 361 | Instruction *InsertPos = BB.begin(); |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 362 | |
Chris Lattner | 697954c | 2002-01-20 22:54:45 +0000 | [diff] [blame] | 363 | std::ostringstream OutStr; |
Chris Lattner | 80e5ed9 | 2003-01-13 00:52:14 +0000 | [diff] [blame] | 364 | WriteAsOperand(OutStr, &F); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 365 | InsertPrintInst(0, &BB, InsertPos, "ENTERING FUNCTION: " + OutStr.str(), |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 366 | Printf, HashPtrToSeqNum); |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 367 | |
Vikram S. Adve | 2ed5ccd | 2001-11-15 15:00:16 +0000 | [diff] [blame] | 368 | // Now print all the incoming arguments |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 369 | unsigned ArgNo = 0; |
Chris Lattner | e4d5c44 | 2005-03-15 04:54:21 +0000 | [diff] [blame^] | 370 | for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E; ++I, ++ArgNo){ |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 371 | InsertVerbosePrintInst(I, &BB, InsertPos, |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 372 | " Arg #" + utostr(ArgNo) + ": ", Printf, |
| 373 | HashPtrToSeqNum); |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 374 | } |
Vikram S. Adve | 631b9a3 | 2001-10-18 18:16:11 +0000 | [diff] [blame] | 375 | } |
| 376 | |
| 377 | |
Chris Lattner | 79df7c0 | 2002-03-26 18:01:55 +0000 | [diff] [blame] | 378 | static inline void InsertCodeToShowFunctionExit(BasicBlock *BB, |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 379 | Function *Printf, |
| 380 | Function* HashPtrToSeqNum) { |
Vikram S. Adve | 631b9a3 | 2001-10-18 18:16:11 +0000 | [diff] [blame] | 381 | // Get an iterator to point to the insertion location |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 382 | ReturnInst *Ret = cast<ReturnInst>(BB->getTerminator()); |
Vikram S. Adve | 631b9a3 | 2001-10-18 18:16:11 +0000 | [diff] [blame] | 383 | |
Chris Lattner | 697954c | 2002-01-20 22:54:45 +0000 | [diff] [blame] | 384 | std::ostringstream OutStr; |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 385 | WriteAsOperand(OutStr, BB->getParent(), true); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 386 | InsertPrintInst(0, BB, Ret, "LEAVING FUNCTION: " + OutStr.str(), |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 387 | Printf, HashPtrToSeqNum); |
Vikram S. Adve | 631b9a3 | 2001-10-18 18:16:11 +0000 | [diff] [blame] | 388 | |
Vikram S. Adve | 2ed5ccd | 2001-11-15 15:00:16 +0000 | [diff] [blame] | 389 | // print the return value, if any |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 390 | if (BB->getParent()->getReturnType() != Type::VoidTy) |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 391 | InsertPrintInst(Ret->getReturnValue(), BB, Ret, " Returning: ", |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 392 | Printf, HashPtrToSeqNum); |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 393 | } |
| 394 | |
| 395 | |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 396 | bool InsertTraceCode::runOnFunction(Function &F) { |
| 397 | if (!TraceThisFunction(F)) |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 398 | return false; |
| 399 | |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 400 | std::vector<Instruction*> valuesStoredInFunction; |
| 401 | std::vector<BasicBlock*> exitBlocks; |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 402 | |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 403 | // Insert code to trace values at function entry |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 404 | InsertCodeToShowFunctionEntry(F, externalFuncs.PrintfFunc, |
| 405 | externalFuncs.HashPtrFunc); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 406 | |
| 407 | // Push a pointer set for recording alloca'd pointers at entry. |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 408 | if (!DisablePtrHashing) |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 409 | new CallInst(externalFuncs.PushOnEntryFunc, std::vector<Value*>(), "", |
Chris Lattner | 02a3be0 | 2003-09-20 14:39:18 +0000 | [diff] [blame] | 410 | F.getEntryBlock().begin()); |
Chris Lattner | 2a7c23e | 2002-09-10 17:04:02 +0000 | [diff] [blame] | 411 | |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 412 | for (Function::iterator BB = F.begin(); BB != F.end(); ++BB) { |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 413 | if (isa<ReturnInst>(BB->getTerminator())) |
| 414 | exitBlocks.push_back(BB); // record this as an exit block |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 415 | |
| 416 | // Insert trace code if this basic block is interesting... |
| 417 | handleBasicBlock(BB, valuesStoredInFunction); |
| 418 | |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 419 | if (!DisablePtrHashing) // release seq. numbers on free/ret |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 420 | ReleasePtrSeqNumbers(BB, externalFuncs); |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 421 | } |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 422 | |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 423 | for (unsigned i=0; i != exitBlocks.size(); ++i) |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 424 | { |
| 425 | // Insert code to trace values at function exit |
Chris Lattner | 1198266 | 2002-07-23 18:04:15 +0000 | [diff] [blame] | 426 | InsertCodeToShowFunctionExit(exitBlocks[i], externalFuncs.PrintfFunc, |
| 427 | externalFuncs.HashPtrFunc); |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 428 | |
| 429 | // Release all recorded pointers before RETURN. Do this LAST! |
Chris Lattner | 2e0769e | 2002-05-20 21:43:59 +0000 | [diff] [blame] | 430 | if (!DisablePtrHashing) |
Chris Lattner | 7b6dd29 | 2003-10-27 21:44:09 +0000 | [diff] [blame] | 431 | new CallInst(externalFuncs.ReleaseOnReturnFunc, std::vector<Value*>(), |
| 432 | "", exitBlocks[i]->getTerminator()); |
Chris Lattner | 29c1473 | 2001-12-14 16:26:05 +0000 | [diff] [blame] | 433 | } |
Vikram S. Adve | 1e2ddcf | 2002-05-19 15:39:02 +0000 | [diff] [blame] | 434 | |
Chris Lattner | 8d9e377 | 2001-10-18 05:28:08 +0000 | [diff] [blame] | 435 | return true; |
Vikram S. Adve | df1892f | 2001-10-14 23:18:45 +0000 | [diff] [blame] | 436 | } |