It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/opt/AnalysisWrappers.cpp b/tools/opt/AnalysisWrappers.cpp
new file mode 100644
index 0000000..ce2c34d
--- /dev/null
+++ b/tools/opt/AnalysisWrappers.cpp
@@ -0,0 +1,88 @@
+//===- AnalysisWrappers.cpp - Wrappers around non-pass analyses -----------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines pass wrappers around LLVM analyses that don't make sense to
+// be passes. It provides a nice standard pass interface to these classes so
+// that they can be printed out by analyze.
+//
+// These classes are separated out of analyze.cpp so that it is more clear which
+// code is the integral part of the analyze tool, and which part of the code is
+// just making it so more passes are available.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Module.h"
+#include "llvm/Pass.h"
+#include "llvm/Support/CallSite.h"
+#include "llvm/Analysis/CallGraph.h"
+#include <iostream>
+using namespace llvm;
+
+namespace {
+ /// ExternalFunctionsPassedConstants - This pass prints out call sites to
+ /// external functions that are called with constant arguments. This can be
+ /// useful when looking for standard library functions we should constant fold
+ /// or handle in alias analyses.
+ struct ExternalFunctionsPassedConstants : public ModulePass {
+ static char ID; // Pass ID, replacement for typeid
+ ExternalFunctionsPassedConstants() : ModulePass((intptr_t)&ID) {}
+ virtual bool runOnModule(Module &M) {
+ for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
+ if (I->isDeclaration()) {
+ bool PrintedFn = false;
+ for (Value::use_iterator UI = I->use_begin(), E = I->use_end();
+ UI != E; ++UI)
+ if (Instruction *User = dyn_cast<Instruction>(*UI)) {
+ CallSite CS = CallSite::get(User);
+ if (CS.getInstruction()) {
+ for (CallSite::arg_iterator AI = CS.arg_begin(),
+ E = CS.arg_end(); AI != E; ++AI)
+ if (isa<Constant>(*AI)) {
+ if (!PrintedFn) {
+ std::cerr << "Function '" << I->getName() << "':\n";
+ PrintedFn = true;
+ }
+ std::cerr << *User;
+ break;
+ }
+ }
+ }
+ }
+
+ return false;
+ }
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ }
+ };
+
+ char ExternalFunctionsPassedConstants::ID = 0;
+ RegisterPass<ExternalFunctionsPassedConstants>
+ P1("externalfnconstants", "Print external fn callsites passed constants");
+
+ struct CallGraphPrinter : public ModulePass {
+ static char ID; // Pass ID, replacement for typeid
+ CallGraphPrinter() : ModulePass((intptr_t)&ID) {}
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ AU.addRequiredTransitive<CallGraph>();
+ }
+ virtual bool runOnModule(Module &M) { return false; }
+
+ virtual void print(std::ostream &OS, const Module *M) const {
+ getAnalysis<CallGraph>().print(OS, M);
+ }
+ };
+
+ char CallGraphPrinter::ID = 0;
+ RegisterPass<CallGraphPrinter>
+ P2("callgraph", "Print a call graph");
+}