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RegBankSelect and InstructionSelect run after the legalizer and require a Legalized function: check that all instructions are legal. Note that this should be in the MachineVerifier, but it can't use the MachineLegalizer as it's currently in the separate GlobalISel library. Note that the RegBankSelect verifier checks have the same layering problem, but we only use inline methods so end up not needing to link against the GlobalISel library. llvm-svn: 277472
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
//== llvm/CodeGen/GlobalISel/MachineLegalizePass.h ------------- -*- 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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/// \file A pass to convert the target-illegal operations created by IR -> MIR
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/// translation into ones the target expects to be able to select. This may
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/// occur in multiple phases, for example G_ADD <2 x i8> -> G_ADD <2 x i16> ->
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/// G_ADD <4 x i16>.
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///
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/// The LegalizeHelper class is where most of the work happens, and is designed
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/// to be callable from other passes that find themselves with an illegal
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/// instruction.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_GLOBALISEL_LEGALIZEMACHINEIRPASS_H
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#define LLVM_CODEGEN_GLOBALISEL_LEGALIZEMACHINEIRPASS_H
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#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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namespace llvm {
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class MachineLegalizePass : public MachineFunctionPass {
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public:
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static char ID;
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private:
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/// Initialize the field members using \p MF.
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void init(MachineFunction &MF);
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public:
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// Ctor, nothing fancy.
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MachineLegalizePass();
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const char *getPassName() const override {
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return "MachineLegalizePass";
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}
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MachineFunctionProperties getRequiredProperties() const override {
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return MachineFunctionProperties().set(
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MachineFunctionProperties::Property::IsSSA);
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}
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MachineFunctionProperties getSetProperties() const override {
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return MachineFunctionProperties().set(
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MachineFunctionProperties::Property::Legalized);
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}
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bool runOnMachineFunction(MachineFunction &MF) override;
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};
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} // End namespace llvm.
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#endif
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