forked from OSchip/llvm-project
63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
//===-- ResetMachineFunctionPass.cpp - Machine Loop Invariant Code Motion Pass ---------===//
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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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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/IR/DiagnosticInfo.h"
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#include "llvm/Support/Debug.h"
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using namespace llvm;
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#define DEBUG_TYPE "reset-machine-function"
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namespace {
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class ResetMachineFunction : public MachineFunctionPass {
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/// Tells whether or not this pass should emit a fallback
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/// diagnostic when it resets a function.
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bool EmitFallbackDiag;
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public:
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static char ID; // Pass identification, replacement for typeid
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ResetMachineFunction(bool EmitFallbackDiag = false)
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: MachineFunctionPass(ID), EmitFallbackDiag(EmitFallbackDiag) {}
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const char *getPassName() const override {
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return "ResetMachineFunction";
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}
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bool runOnMachineFunction(MachineFunction &MF) override {
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if (MF.getProperties().hasProperty(
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MachineFunctionProperties::Property::FailedISel)) {
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DEBUG(dbgs() << "Reseting: " << MF.getName() << '\n');
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MF.reset();
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if (EmitFallbackDiag) {
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const Function &F = *MF.getFunction();
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DiagnosticInfoISelFallback DiagFallback(F);
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F.getContext().diagnose(DiagFallback);
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}
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return true;
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}
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return false;
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}
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};
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} // end anonymous namespace
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char ResetMachineFunction::ID = 0;
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INITIALIZE_PASS(ResetMachineFunction, DEBUG_TYPE,
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"reset machine function if ISel failed", false, false)
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MachineFunctionPass *
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llvm::createResetMachineFunctionPass(bool EmitFallbackDiag = false) {
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return new ResetMachineFunction(EmitFallbackDiag);
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}
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