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3e5f3565d1
Summary: The main goal is to able to start using the new OptRemarkEmitter analysis from the LoopVectorizer. Since the vectorizer was recently converted to the new PM, it makes sense to convert this analysis as well. This pass is currently tested through the LoopDistribution pass, so I am also porting LoopDistribution to get coverage for this analysis with the new PM. Reviewers: davidxl, silvas Subscribers: llvm-commits, mzolotukhin Differential Revision: https://reviews.llvm.org/D22436 llvm-svn: 275810
89 lines
3.0 KiB
C++
89 lines
3.0 KiB
C++
//===- OptimizationDiagnosticInfo.cpp - Optimization Diagnostic -*- 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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// Optimization diagnostic interfaces. It's packaged as an analysis pass so
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// that by using this service passes become dependent on BFI as well. BFI is
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// used to compute the "hotness" of the diagnostic message.
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/OptimizationDiagnosticInfo.h"
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#include "llvm/Analysis/LazyBlockFrequencyInfo.h"
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#include "llvm/Analysis/LoopInfo.h"
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#include "llvm/IR/DiagnosticInfo.h"
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#include "llvm/IR/LLVMContext.h"
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using namespace llvm;
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Optional<uint64_t> OptimizationRemarkEmitter::computeHotness(Value *V) {
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if (!BFI)
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return None;
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return BFI->getBlockProfileCount(cast<BasicBlock>(V));
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}
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void OptimizationRemarkEmitter::emitOptimizationRemarkMissed(
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const char *PassName, const DebugLoc &DLoc, Value *V, const Twine &Msg) {
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LLVMContext &Ctx = F->getContext();
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Ctx.diagnose(DiagnosticInfoOptimizationRemarkMissed(PassName, *F, DLoc, Msg,
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computeHotness(V)));
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}
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void OptimizationRemarkEmitter::emitOptimizationRemarkMissed(
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const char *PassName, Loop *L, const Twine &Msg) {
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emitOptimizationRemarkMissed(PassName, L->getStartLoc(), L->getHeader(), Msg);
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}
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OptimizationRemarkEmitterWrapperPass::OptimizationRemarkEmitterWrapperPass()
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: FunctionPass(ID) {
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initializeOptimizationRemarkEmitterWrapperPassPass(
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*PassRegistry::getPassRegistry());
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}
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bool OptimizationRemarkEmitterWrapperPass::runOnFunction(Function &Fn) {
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BlockFrequencyInfo *BFI;
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if (Fn.getContext().getDiagnosticHotnessRequested())
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BFI = &getAnalysis<LazyBlockFrequencyInfoPass>().getBFI();
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else
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BFI = nullptr;
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ORE = llvm::make_unique<OptimizationRemarkEmitter>(&Fn, BFI);
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return false;
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}
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void OptimizationRemarkEmitterWrapperPass::getAnalysisUsage(
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AnalysisUsage &AU) const {
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LazyBlockFrequencyInfoPass::getLazyBFIAnalysisUsage(AU);
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AU.setPreservesAll();
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}
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char OptimizationRemarkEmitterAnalysis::PassID;
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OptimizationRemarkEmitter
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OptimizationRemarkEmitterAnalysis::run(Function &F, AnalysisManager<Function> &AM) {
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BlockFrequencyInfo *BFI;
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if (F.getContext().getDiagnosticHotnessRequested())
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BFI = &AM.getResult<BlockFrequencyAnalysis>(F);
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else
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BFI = nullptr;
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return OptimizationRemarkEmitter(&F, BFI);
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}
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char OptimizationRemarkEmitterWrapperPass::ID = 0;
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static const char ore_name[] = "Optimization Remark Emitter";
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#define ORE_NAME "opt-remark-emitter"
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INITIALIZE_PASS_BEGIN(OptimizationRemarkEmitterWrapperPass, ORE_NAME, ore_name,
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false, true)
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INITIALIZE_PASS_DEPENDENCY(LazyBFIPass)
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INITIALIZE_PASS_END(OptimizationRemarkEmitterWrapperPass, ORE_NAME, ore_name,
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false, true)
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