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Add skeleton profileinfoloader pass. This will be enhanced to actually LOAD
a profile tommorow. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11318 91177308-0d34-0410-b5e6-96231b3b80d8
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lib/Analysis/ProfileInfoLoaderPass.cpp
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58
lib/Analysis/ProfileInfoLoaderPass.cpp
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//===- ProfileInfoLoaderPass.cpp - LLVM Pass to load profile info ---------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a concrete implementation of profiling information that
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// loads the information from a profile dump file.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Pass.h"
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#include "llvm/Analysis/ProfileInfo.h"
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#include "llvm/Analysis/ProfileInfoLoader.h"
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using namespace llvm;
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namespace {
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class LoaderPass : public Pass, public ProfileInfo {
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std::string Filename;
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public:
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LoaderPass(const std::string &filename = "llvmprof.out")
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: Filename(filename) {}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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}
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virtual const char *getPassName() const {
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return "Profiling information loader";
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}
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/// run - Load the profile information from the specified file.
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virtual bool run(Module &M);
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unsigned getExecutionCount(BasicBlock *BB) { return 0; }
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};
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RegisterOpt<LoaderPass>
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X("profile-loader", "Load profile information from llvmprof.out");
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RegisterAnalysisGroup<ProfileInfo, LoaderPass> Y;
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} // End of anonymous namespace
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/// createProfileLoaderPass - This function returns a Pass that loads the
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/// profiling information for the module from the specified filename, making it
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/// available to the optimizers.
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Pass *llvm::createProfileLoaderPass(const std::string &Filename) {
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return new LoaderPass(Filename);
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}
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bool LoaderPass::run(Module &M) {
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return false;
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}
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