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authorpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
committerpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
commitb64793999546ed8adebaeebd9d8345d18db8927d (patch)
tree4357c27b561d73b0e089727c6ed659f2ceff5f47 /gnu/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp
parentAdd support for UTF-8 DISPLAY-HINTs with octet length. For now only (diff)
downloadwireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.tar.xz
wireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.zip
Remove LLVM 8.0.1 files.
Diffstat (limited to 'gnu/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp')
-rw-r--r--gnu/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp88
1 files changed, 0 insertions, 88 deletions
diff --git a/gnu/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp b/gnu/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp
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--- a/gnu/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp
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-//===-- ResetMachineFunctionPass.cpp - Reset Machine Function ----*- C++ -*-==//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-/// \file
-/// This file implements a pass that will conditionally reset a machine
-/// function as if it was just created. This is used to provide a fallback
-/// mechanism when GlobalISel fails, thus the condition for the reset to
-/// happen is that the MachineFunction has the FailedISel property.
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ADT/ScopeExit.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/StackProtector.h"
-#include "llvm/CodeGen/Passes.h"
-#include "llvm/IR/DiagnosticInfo.h"
-#include "llvm/Support/Debug.h"
-using namespace llvm;
-
-#define DEBUG_TYPE "reset-machine-function"
-
-STATISTIC(NumFunctionsReset, "Number of functions reset");
-
-namespace {
- class ResetMachineFunction : public MachineFunctionPass {
- /// Tells whether or not this pass should emit a fallback
- /// diagnostic when it resets a function.
- bool EmitFallbackDiag;
- /// Whether we should abort immediately instead of resetting the function.
- bool AbortOnFailedISel;
-
- public:
- static char ID; // Pass identification, replacement for typeid
- ResetMachineFunction(bool EmitFallbackDiag = false,
- bool AbortOnFailedISel = false)
- : MachineFunctionPass(ID), EmitFallbackDiag(EmitFallbackDiag),
- AbortOnFailedISel(AbortOnFailedISel) {}
-
- StringRef getPassName() const override { return "ResetMachineFunction"; }
-
- void getAnalysisUsage(AnalysisUsage &AU) const override {
- AU.addPreserved<StackProtector>();
- MachineFunctionPass::getAnalysisUsage(AU);
- }
-
- bool runOnMachineFunction(MachineFunction &MF) override {
- // No matter what happened, whether we successfully selected the function
- // or not, nothing is going to use the vreg types after us. Make sure they
- // disappear.
- auto ClearVRegTypesOnReturn =
- make_scope_exit([&MF]() { MF.getRegInfo().clearVirtRegTypes(); });
-
- if (MF.getProperties().hasProperty(
- MachineFunctionProperties::Property::FailedISel)) {
- if (AbortOnFailedISel)
- report_fatal_error("Instruction selection failed");
- LLVM_DEBUG(dbgs() << "Resetting: " << MF.getName() << '\n');
- ++NumFunctionsReset;
- MF.reset();
- if (EmitFallbackDiag) {
- const Function &F = MF.getFunction();
- DiagnosticInfoISelFallback DiagFallback(F);
- F.getContext().diagnose(DiagFallback);
- }
- return true;
- }
- return false;
- }
-
- };
-} // end anonymous namespace
-
-char ResetMachineFunction::ID = 0;
-INITIALIZE_PASS(ResetMachineFunction, DEBUG_TYPE,
- "Reset machine function if ISel failed", false, false)
-
-MachineFunctionPass *
-llvm::createResetMachineFunctionPass(bool EmitFallbackDiag = false,
- bool AbortOnFailedISel = false) {
- return new ResetMachineFunction(EmitFallbackDiag, AbortOnFailedISel);
-}