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0e27b48788
Summary: Support call ABI. For now only Linux C and X86_64_SysV calling conventions supported. Variadic function not supported. Reviewers: zvi, guyblank, oren_ben_simhon Reviewed By: oren_ben_simhon Subscribers: rovka, kristof.beyls, llvm-commits Differential Revision: https://reviews.llvm.org/D34602 llvm-svn: 311279
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
//===-- llvm/lib/Target/X86/X86CallLowering.h - Call lowering -----===//
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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
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/// This file describes how to lower LLVM calls to machine code calls.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_X86_X86CALLLOWERING
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#define LLVM_LIB_TARGET_X86_X86CALLLOWERING
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/CodeGen/GlobalISel/CallLowering.h"
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namespace llvm {
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class Function;
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class MachineIRBuilder;
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class X86TargetLowering;
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class Value;
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class X86CallLowering : public CallLowering {
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public:
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X86CallLowering(const X86TargetLowering &TLI);
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bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val,
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unsigned VReg) const override;
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bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
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ArrayRef<unsigned> VRegs) const override;
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bool lowerCall(MachineIRBuilder &MIRBuilder, CallingConv::ID CallConv,
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const MachineOperand &Callee, const ArgInfo &OrigRet,
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ArrayRef<ArgInfo> OrigArgs) const override;
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private:
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/// A function of this type is used to perform value split action.
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typedef std::function<void(ArrayRef<unsigned>)> SplitArgTy;
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bool splitToValueTypes(const ArgInfo &OrigArgInfo,
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SmallVectorImpl<ArgInfo> &SplitArgs,
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const DataLayout &DL, MachineRegisterInfo &MRI,
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SplitArgTy SplitArg) const;
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};
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} // namespace llvm
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#endif
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