//===- 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
//
//===----------------------------------------------------------------------===//
+#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 "Support/CommandLine.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/Streams.h"
using namespace llvm;
namespace {
cl::value_desc("filename"),
cl::desc("Profile file loaded by -profile-loader"));
- class LoaderPass : public Pass, public ProfileInfo {
+ class VISIBILITY_HIDDEN LoaderPass : public ModulePass, public ProfileInfo {
std::string Filename;
public:
- LoaderPass(const std::string &filename = "")
- : Filename(filename) {
+ static char ID; // Class identification, replacement for typeinfo
+ explicit LoaderPass(const std::string &filename = "")
+ : ModulePass((intptr_t)&ID), Filename(filename) {
if (filename.empty()) Filename = ProfileInfoFilename;
}
}
/// run - Load the profile information from the specified file.
- virtual bool run(Module &M);
+ virtual bool runOnModule(Module &M);
};
-
- RegisterOpt<LoaderPass>
+
+ char LoaderPass::ID = 0;
+ RegisterPass<LoaderPass>
X("profile-loader", "Load profile information from llvmprof.out");
- RegisterAnalysisGroup<ProfileInfo, LoaderPass> Y;
+ 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
return new LoaderPass(Filename);
}
-bool LoaderPass::run(Module &M) {
+bool LoaderPass::runOnModule(Module &M) {
ProfileInfoLoader PIL("profile-loader", Filename, M);
- ExecutionCounts.clear();
- if (PIL.hasAccurateBlockCounts()) {
- std::vector<std::pair<BasicBlock*, unsigned> > Counts;
- PIL.getBlockCounts(Counts);
- ExecutionCounts.insert(Counts.begin(), Counts.end());
+ 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;
}