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Teach sparc to fold loads/stores into copies.

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Remove the dead getRegClassForType method
minor formating changes.

llvm-svn: 25936
This commit is contained in:
Chris Lattner 2006-02-03 07:06:25 +00:00
parent 541258d077
commit 255ef92e53
2 changed files with 47 additions and 37 deletions
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79
lib/Target/SparcV8/SparcV8RegisterInfo.cpp
View File

@ -27,34 +27,29 @@ SparcV8RegisterInfo::SparcV8RegisterInfo()
void SparcV8RegisterInfo::
storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned SrcReg, int FrameIdx,
unsigned SrcReg, int FI,
const TargetRegisterClass *RC) const {
// On the order of operands here: think "[FrameIdx + 0] = SrcReg".
if (RC == V8::IntRegsRegisterClass)
BuildMI (MBB, I, V8::STri, 3).addFrameIndex (FrameIdx).addSImm (0)
.addReg (SrcReg);
BuildMI(MBB, I, V8::STri, 3).addFrameIndex(FI).addImm(0).addReg(SrcReg);
else if (RC == V8::FPRegsRegisterClass)
BuildMI (MBB, I, V8::STFri, 3).addFrameIndex (FrameIdx).addSImm (0)
.addReg (SrcReg);
BuildMI(MBB, I, V8::STFri, 3).addFrameIndex(FI).addImm(0).addReg(SrcReg);
else if (RC == V8::DFPRegsRegisterClass)
BuildMI (MBB, I, V8::STDFri, 3).addFrameIndex (FrameIdx).addSImm (0)
.addReg (SrcReg);
BuildMI(MBB, I, V8::STDFri, 3).addFrameIndex(FI).addImm(0).addReg(SrcReg);
else
assert (0 && "Can't store this register to stack slot");
assert(0 && "Can't store this register to stack slot");
}
void SparcV8RegisterInfo::
loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned DestReg, int FrameIdx,
unsigned DestReg, int FI,
const TargetRegisterClass *RC) const {
if (RC == V8::IntRegsRegisterClass)
BuildMI (MBB, I, V8::LDri, 2, DestReg).addFrameIndex (FrameIdx).addSImm (0);
BuildMI(MBB, I, V8::LDri, 2, DestReg).addFrameIndex(FI).addImm(0);
else if (RC == V8::FPRegsRegisterClass)
BuildMI (MBB, I, V8::LDFri, 2, DestReg).addFrameIndex (FrameIdx)
.addSImm (0);
BuildMI(MBB, I, V8::LDFri, 2, DestReg).addFrameIndex(FI).addImm (0);
else if (RC == V8::DFPRegsRegisterClass)
BuildMI (MBB, I, V8::LDDFri, 2, DestReg).addFrameIndex (FrameIdx)
.addSImm (0);
BuildMI(MBB, I, V8::LDDFri, 2, DestReg).addFrameIndex(FI).addImm(0);
else
assert(0 && "Can't load this register from stack slot");
}
@ -64,15 +59,46 @@ void SparcV8RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *RC) const {
if (RC == V8::IntRegsRegisterClass)
BuildMI (MBB, I, V8::ORrr, 2, DestReg).addReg (V8::G0).addReg (SrcReg);
BuildMI(MBB, I, V8::ORrr, 2, DestReg).addReg(V8::G0).addReg(SrcReg);
else if (RC == V8::FPRegsRegisterClass)
BuildMI (MBB, I, V8::FMOVS, 1, DestReg).addReg (SrcReg);
BuildMI(MBB, I, V8::FMOVS, 1, DestReg).addReg(SrcReg);
else if (RC == V8::DFPRegsRegisterClass)
BuildMI (MBB, I, V8::FpMOVD, 1, DestReg).addReg (SrcReg);
BuildMI(MBB, I, V8::FpMOVD, 1, DestReg).addReg(SrcReg);
else
assert (0 && "Can't copy this register");
}
MachineInstr *SparcV8RegisterInfo::foldMemoryOperand(MachineInstr* MI,
unsigned OpNum,
int FI) const {
bool isFloat = false;
switch (MI->getOpcode()) {
case V8::ORrr:
if (MI->getOperand(1).isRegister() && MI->getOperand(1).getReg() == V8::G0&&
MI->getOperand(0).isRegister() && MI->getOperand(2).isRegister()) {
if (OpNum == 0) // COPY -> STORE
return BuildMI(V8::STri, 3).addFrameIndex(FI).addImm(0)
.addReg(MI->getOperand(2).getReg());
else // COPY -> LOAD
return BuildMI(V8::LDri, 2, MI->getOperand(0).getReg())
.addFrameIndex(FI).addImm(0);
}
break;
case V8::FMOVS:
isFloat = true;
// FALLTHROUGH
case V8::FMOVD:
if (OpNum == 0) // COPY -> STORE
return BuildMI(isFloat ? V8::STFri : V8::STDFri, 3)
.addFrameIndex(FI).addImm(0).addReg(MI->getOperand(1).getReg());
else // COPY -> LOAD
return BuildMI(isFloat ? V8::LDFri : V8::LDDFri, 2,
MI->getOperand(0).getReg()).addFrameIndex(FI).addImm(0);
break;
}
return 0;
}
void SparcV8RegisterInfo::
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
@ -172,22 +198,3 @@ void SparcV8RegisterInfo::emitEpilogue(MachineFunction &MF,
#include "SparcV8GenRegisterInfo.inc"
const TargetRegisterClass*
SparcV8RegisterInfo::getRegClassForType(const Type* Ty) const {
switch (Ty->getTypeID()) {
case Type::FloatTyID: return V8::FPRegsRegisterClass;
case Type::DoubleTyID: return V8::DFPRegsRegisterClass;
case Type::LongTyID:
case Type::ULongTyID: assert(0 && "Long values do not fit in registers!");
default: assert(0 && "Invalid type to getClass!");
case Type::BoolTyID:
case Type::SByteTyID:
case Type::UByteTyID:
case Type::ShortTyID:
case Type::UShortTyID:
case Type::IntTyID:
case Type::UIntTyID:
case Type::PointerTyID: return V8::IntRegsRegisterClass;
}
}

5
lib/Target/SparcV8/SparcV8RegisterInfo.h
View File

@ -23,7 +23,6 @@ class Type;
struct SparcV8RegisterInfo : public SparcV8GenRegisterInfo {
SparcV8RegisterInfo();
const TargetRegisterClass* getRegClassForType(const Type* Ty) const;
/// Code Generation virtual methods...
void storeRegToStackSlot(MachineBasicBlock &MBB,
@ -39,6 +38,10 @@ struct SparcV8RegisterInfo : public SparcV8GenRegisterInfo {
void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *RC) const;
virtual MachineInstr* foldMemoryOperand(MachineInstr* MI,
unsigned OpNum,
int FrameIndex) const;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,