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/lib/Analysis/ProfileInfoLoaderPass.cpp b/lib/Analysis/ProfileInfoLoaderPass.cpp
new file mode 100644
index 0000000..e749375
--- /dev/null
+++ b/lib/Analysis/ProfileInfoLoaderPass.cpp
@@ -0,0 +1,92 @@
+//===- ProfileInfoLoaderPass.cpp - LLVM Pass to load profile info ---------===//
+//
+// 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 implements a concrete implementation of profiling information that
+// loads the information from a profile dump file.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/BasicBlock.h"
+#include "llvm/InstrTypes.h"
+#include "llvm/Pass.h"
+#include "llvm/Analysis/Passes.h"
+#include "llvm/Analysis/ProfileInfo.h"
+#include "llvm/Analysis/ProfileInfoLoader.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/Streams.h"
+using namespace llvm;
+
+namespace {
+ cl::opt<std::string>
+ ProfileInfoFilename("profile-info-file", cl::init("llvmprof.out"),
+ cl::value_desc("filename"),
+ cl::desc("Profile file loaded by -profile-loader"));
+
+ class VISIBILITY_HIDDEN LoaderPass : public ModulePass, public ProfileInfo {
+ std::string Filename;
+ public:
+ static char ID; // Class identification, replacement for typeinfo
+ LoaderPass(const std::string &filename = "")
+ : ModulePass((intptr_t)&ID), Filename(filename) {
+ if (filename.empty()) Filename = ProfileInfoFilename;
+ }
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ }
+
+ virtual const char *getPassName() const {
+ return "Profiling information loader";
+ }
+
+ /// run - Load the profile information from the specified file.
+ virtual bool runOnModule(Module &M);
+ };
+
+ char LoaderPass::ID = 0;
+ RegisterPass<LoaderPass>
+ X("profile-loader", "Load profile information from llvmprof.out");
+
+ RegisterAnalysisGroup<ProfileInfo> Y(X);
+} // End of anonymous namespace
+
+ModulePass *llvm::createProfileLoaderPass() { return new LoaderPass(); }
+
+/// createProfileLoaderPass - This function returns a Pass that loads the
+/// profiling information for the module from the specified filename, making it
+/// available to the optimizers.
+Pass *llvm::createProfileLoaderPass(const std::string &Filename) {
+ return new LoaderPass(Filename);
+}
+
+bool LoaderPass::runOnModule(Module &M) {
+ ProfileInfoLoader PIL("profile-loader", Filename, M);
+ EdgeCounts.clear();
+ bool PrintedWarning = false;
+
+ std::vector<std::pair<ProfileInfoLoader::Edge, unsigned> > ECs;
+ PIL.getEdgeCounts(ECs);
+ for (unsigned i = 0, e = ECs.size(); i != e; ++i) {
+ BasicBlock *BB = ECs[i].first.first;
+ unsigned SuccNum = ECs[i].first.second;
+ TerminatorInst *TI = BB->getTerminator();
+ if (SuccNum >= TI->getNumSuccessors()) {
+ if (!PrintedWarning) {
+ cerr << "WARNING: profile information is inconsistent with "
+ << "the current program!\n";
+ PrintedWarning = true;
+ }
+ } else {
+ EdgeCounts[std::make_pair(BB, TI->getSuccessor(SuccNum))]+= ECs[i].second;
+ }
+ }
+
+ return false;
+}