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Added methods to read/write values to stack in .h, fixed implementation in

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.cpp to return the iterator correctly.

llvm-svn: 4827
This commit is contained in:
Misha Brukman 2002-11-22 22:43:47 +00:00
parent 23d923ff18
commit 02c0acabb9
2 changed files with 39 additions and 21 deletions
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41
lib/Target/X86/X86RegisterInfo.cpp
View File

@ -1,4 +1,4 @@
//===- X86RegisterInfo.cpp - X86 Register Information ---------------------===// //===- X86RegisterInfo.cpp - X86 Register Information -----------*- C++ -*-===//
// //
// This file contains the X86 implementation of the MRegisterInfo class. // This file contains the X86 implementation of the MRegisterInfo class.
// //
@ -6,6 +6,7 @@
#include "X86.h" #include "X86.h"
#include "X86RegisterInfo.h" #include "X86RegisterInfo.h"
#include "X86InstrBuilder.h"
#include "llvm/Constants.h" #include "llvm/Constants.h"
#include "llvm/Type.h" #include "llvm/Type.h"
#include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/CodeGen/MachineInstrBuilder.h"
@ -23,23 +24,35 @@ X86RegisterInfo::X86RegisterInfo()
} }
void X86RegisterInfo::copyReg2PCRel(MachineBasicBlock *MBB, MachineBasicBlock::iterator
X86RegisterInfo::storeReg2RegOffset(MachineBasicBlock *MBB,
MachineBasicBlock::iterator &MBBI, MachineBasicBlock::iterator &MBBI,
unsigned SrcReg, unsigned ImmOffset, unsigned SrcReg, unsigned DestReg,
unsigned dataSize) const unsigned ImmOffset, unsigned dataSize)
const
{ {
MachineInstrBuilder MI = BuildMI(X86::MOVmr32, 2) MachineInstr *MI = addRegOffset(BuildMI(X86::MOVmr32, 5).addReg(SrcReg),
.addPCDisp(ConstantUInt::get(Type::UIntTy, ImmOffset)).addReg(SrcReg); DestReg, ImmOffset);
MBB->insert(MBBI, &*MI); return ++(MBB->insert(MBBI, MI));
} }
void X86RegisterInfo::copyPCRel2Reg(MachineBasicBlock *MBB, MachineBasicBlock::iterator
MachineBasicBlock::iterator &MBBI, X86RegisterInfo::loadRegOffset2Reg(MachineBasicBlock *MBB,
unsigned ImmOffset, unsigned DestReg, MachineBasicBlock::iterator &MBBI,
unsigned dataSize) const unsigned DestReg, unsigned SrcReg,
unsigned ImmOffset, unsigned dataSize)
const
{ {
MachineInstrBuilder MI = BuildMI(X86::MOVrm32, 2) MachineInstr *MI = addRegOffset(BuildMI(X86::MOVrm32, 5).addReg(DestReg),
.addReg(DestReg).addPCDisp(ConstantUInt::get(Type::UIntTy, ImmOffset)); SrcReg, ImmOffset);
MBB->insert(MBBI, &*MI); return ++(MBB->insert(MBBI, MI));
} }
unsigned X86RegisterInfo::getFramePointer() const {
return X86::EBP;
}
unsigned X86RegisterInfo::getStackPointer() const {
return X86::ESP;
}

19
lib/Target/X86/X86RegisterInfo.h
View File

@ -17,15 +17,20 @@ struct X86RegisterInfo : public MRegisterInfo {
MRegisterInfo::const_iterator const_regclass_begin() const; MRegisterInfo::const_iterator const_regclass_begin() const;
MRegisterInfo::const_iterator const_regclass_end() const; MRegisterInfo::const_iterator const_regclass_end() const;
void copyReg2PCRel(MachineBasicBlock *MBB, MachineBasicBlock::iterator
storeReg2RegOffset(MachineBasicBlock *MBB,
MachineBasicBlock::iterator &MBBI, MachineBasicBlock::iterator &MBBI,
unsigned SrcReg, unsigned ImmOffset, unsigned DestReg, unsigned SrcReg,
unsigned dataSize) const; unsigned ImmOffset, unsigned dataSize) const;
void copyPCRel2Reg(MachineBasicBlock *MBB, MachineBasicBlock::iterator
MachineBasicBlock::iterator &MBBI, loadRegOffset2Reg(MachineBasicBlock *MBB,
unsigned ImmOffset, unsigned DestReg, MachineBasicBlock::iterator &MBBI,
unsigned dataSize) const; unsigned DestReg, unsigned SrcReg,
unsigned ImmOffset, unsigned dataSize) const;
unsigned getFramePointer() const;
unsigned getStackPointer() const;
/// Returns register class appropriate for input SSA register /// Returns register class appropriate for input SSA register
/// ///