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46488e2c5b
As the development of GlobalISel move forward, this statistic should strictly decrease until it reaches zero. At this point, it would mean GlobalISel can replace SDISel (at least on the tested inputs :P). llvm-svn: 282275
67 lines
2.1 KiB
C++
67 lines
2.1 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/ADT/Statistic.h"
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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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STATISTIC(NumFunctionsReset, "Number of functions reset");
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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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++NumFunctionsReset;
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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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