70 lines
2.4 KiB
C++
70 lines
2.4 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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OptimizationRemarkEmitter::OptimizationRemarkEmitter() : FunctionPass(ID) {
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initializeOptimizationRemarkEmitterPass(*PassRegistry::getPassRegistry());
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}
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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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bool OptimizationRemarkEmitter::runOnFunction(Function &Fn) {
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F = &Fn;
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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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return false;
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}
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void OptimizationRemarkEmitter::getAnalysisUsage(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 OptimizationRemarkEmitter::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(OptimizationRemarkEmitter, ORE_NAME, ore_name, false,
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true)
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INITIALIZE_PASS_DEPENDENCY(LazyBFIPass)
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INITIALIZE_PASS_END(OptimizationRemarkEmitter, ORE_NAME, ore_name, false, true)
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