mirror of
https://github.com/c64scene-ar/llvm-6502.git
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into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
207 lines
6.9 KiB
C++
207 lines
6.9 KiB
C++
//===- PathProfileVerifier.cpp --------------------------------*- C++ -*---===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This verifier derives an edge profile file from current path profile
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// information
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "path-profile-verifier"
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#include "llvm/Analysis/Passes.h"
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#include "llvm/Analysis/PathProfileInfo.h"
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#include "llvm/Analysis/ProfileInfoTypes.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Pass.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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#include <stdio.h>
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using namespace llvm;
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namespace {
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class PathProfileVerifier : public ModulePass {
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private:
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bool runOnModule(Module &M);
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public:
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static char ID; // Pass identification, replacement for typeid
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PathProfileVerifier() : ModulePass(ID) {
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initializePathProfileVerifierPass(*PassRegistry::getPassRegistry());
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}
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virtual const char *getPassName() const {
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return "Path Profiler Verifier";
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}
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// The verifier requires the path profile and edge profile.
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virtual void getAnalysisUsage(AnalysisUsage& AU) const;
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};
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}
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static cl::opt<std::string>
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EdgeProfileFilename("path-profile-verifier-file",
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cl::init("edgefrompath.llvmprof.out"),
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cl::value_desc("filename"),
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cl::desc("Edge profile file generated by -path-profile-verifier"),
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cl::Hidden);
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char PathProfileVerifier::ID = 0;
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INITIALIZE_PASS(PathProfileVerifier, "path-profile-verifier",
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"Compare the path profile derived edge profile against the "
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"edge profile.", true, true)
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ModulePass *llvm::createPathProfileVerifierPass() {
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return new PathProfileVerifier();
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}
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// The verifier requires the path profile and edge profile.
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void PathProfileVerifier::getAnalysisUsage(AnalysisUsage& AU) const {
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AU.addRequired<PathProfileInfo>();
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AU.addPreserved<PathProfileInfo>();
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}
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typedef std::map<unsigned, unsigned> DuplicateToIndexMap;
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typedef std::map<BasicBlock*,DuplicateToIndexMap> BlockToDuplicateMap;
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typedef std::map<BasicBlock*,BlockToDuplicateMap> NestedBlockToIndexMap;
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// the verifier iterates through each path to gather the total
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// number of edge frequencies
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bool PathProfileVerifier::runOnModule (Module &M) {
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PathProfileInfo& pathProfileInfo = getAnalysis<PathProfileInfo>();
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// setup a data structure to map path edges which index an
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// array of edge counters
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NestedBlockToIndexMap arrayMap;
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unsigned i = 0;
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for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F) {
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if (F->isDeclaration()) continue;
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arrayMap[0][F->begin()][0] = i++;
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for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB) {
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TerminatorInst *TI = BB->getTerminator();
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unsigned duplicate = 0;
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BasicBlock* prev = 0;
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for (unsigned s = 0, e = TI->getNumSuccessors(); s != e;
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prev = TI->getSuccessor(s), ++s) {
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if (prev == TI->getSuccessor(s))
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duplicate++;
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else duplicate = 0;
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arrayMap[BB][TI->getSuccessor(s)][duplicate] = i++;
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}
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}
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}
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std::vector<unsigned> edgeArray(i);
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// iterate through each path and increment the edge counters as needed
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for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F) {
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if (F->isDeclaration()) continue;
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pathProfileInfo.setCurrentFunction(F);
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DEBUG(dbgs() << "function '" << F->getName() << "' ran "
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<< pathProfileInfo.pathsRun()
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<< "/" << pathProfileInfo.getPotentialPathCount()
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<< " potential paths\n");
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for( ProfilePathIterator nextPath = pathProfileInfo.pathBegin(),
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endPath = pathProfileInfo.pathEnd();
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nextPath != endPath; nextPath++ ) {
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ProfilePath* currentPath = nextPath->second;
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ProfilePathEdgeVector* pev = currentPath->getPathEdges();
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DEBUG(dbgs () << "path #" << currentPath->getNumber() << ": "
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<< currentPath->getCount() << "\n");
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// setup the entry edge (normally path profiling doesn't care about this)
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if (currentPath->getFirstBlockInPath() == &F->getEntryBlock())
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edgeArray[arrayMap[0][currentPath->getFirstBlockInPath()][0]]
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+= currentPath->getCount();
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for( ProfilePathEdgeIterator nextEdge = pev->begin(),
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endEdge = pev->end(); nextEdge != endEdge; nextEdge++ ) {
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if (nextEdge != pev->begin())
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DEBUG(dbgs() << " :: ");
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BasicBlock* source = nextEdge->getSource();
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BasicBlock* target = nextEdge->getTarget();
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unsigned duplicateNumber = nextEdge->getDuplicateNumber();
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DEBUG(dbgs() << source->getName() << " --{" << duplicateNumber
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<< "}--> " << target->getName());
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// Ensure all the referenced edges exist
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// TODO: make this a separate function
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if( !arrayMap.count(source) ) {
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errs() << " error [" << F->getName() << "()]: source '"
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<< source->getName()
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<< "' does not exist in the array map.\n";
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} else if( !arrayMap[source].count(target) ) {
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errs() << " error [" << F->getName() << "()]: target '"
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<< target->getName()
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<< "' does not exist in the array map.\n";
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} else if( !arrayMap[source][target].count(duplicateNumber) ) {
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errs() << " error [" << F->getName() << "()]: edge "
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<< source->getName() << " -> " << target->getName()
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<< " duplicate number " << duplicateNumber
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<< " does not exist in the array map.\n";
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} else {
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edgeArray[arrayMap[source][target][duplicateNumber]]
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+= currentPath->getCount();
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}
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}
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DEBUG(errs() << "\n");
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delete pev;
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}
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}
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std::string errorInfo;
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std::string filename = EdgeProfileFilename;
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// Open a handle to the file
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FILE* edgeFile = fopen(filename.c_str(),"wb");
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if (!edgeFile) {
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errs() << "error: unable to open file '" << filename << "' for output.\n";
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return false;
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}
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errs() << "Generating edge profile '" << filename << "' ...\n";
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// write argument info
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unsigned type = ArgumentInfo;
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unsigned num = pathProfileInfo.argList.size();
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int zeros = 0;
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fwrite(&type,sizeof(unsigned),1,edgeFile);
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fwrite(&num,sizeof(unsigned),1,edgeFile);
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fwrite(pathProfileInfo.argList.c_str(),1,num,edgeFile);
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if (num&3)
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fwrite(&zeros, 1, 4-(num&3), edgeFile);
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type = EdgeInfo;
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num = edgeArray.size();
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fwrite(&type,sizeof(unsigned),1,edgeFile);
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fwrite(&num,sizeof(unsigned),1,edgeFile);
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// write each edge to the file
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for( std::vector<unsigned>::iterator s = edgeArray.begin(),
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e = edgeArray.end(); s != e; s++)
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fwrite(&*s, sizeof (unsigned), 1, edgeFile);
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fclose (edgeFile);
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return true;
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}
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