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Clean up copyRegToReg. 

llvm-svn: 85870
This commit is contained in:
Evan Cheng 2009-11-03 05:51:39 +00:00
parent 9e9079371c
commit 23c009f125
1 changed files with 13 additions and 27 deletions
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40
llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
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@ -620,28 +620,12 @@ ARMBaseInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
if (I != MBB.end()) DL = I->getDebugLoc();
if (DestRC != SrcRC) {
// Allow DPR / DPR_VFP2 / DPR_8 cross-class copies
// Allow QPR / QPR_VFP2 cross-class copies
if (DestRC == ARM::DPRRegisterClass) {
if (SrcRC == ARM::DPR_VFP2RegisterClass ||
SrcRC == ARM::DPR_8RegisterClass) {
} else
return false;
} else if (DestRC == ARM::DPR_VFP2RegisterClass) {
if (SrcRC == ARM::DPRRegisterClass ||
SrcRC == ARM::DPR_8RegisterClass) {
} else
return false;
} else if (DestRC == ARM::DPR_8RegisterClass) {
if (SrcRC == ARM::DPRRegisterClass ||
SrcRC == ARM::DPR_VFP2RegisterClass) {
} else
return false;
} else if ((DestRC == ARM::QPRRegisterClass &&
SrcRC == ARM::QPR_VFP2RegisterClass) ||
(DestRC == ARM::QPR_VFP2RegisterClass &&
SrcRC == ARM::QPRRegisterClass)) {
} else
if (DestRC->getSize() != SrcRC->getSize())
return false;
// Allow DPR / DPR_VFP2 / DPR_8 cross-class copies.
// Allow QPR / QPR_VFP2 / QPR_8 cross-class copies.
if (DestRC->getSize() != 8 && DestRC->getSize() != 16)
return false;
}
@ -651,17 +635,18 @@ ARMBaseInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
} else if (DestRC == ARM::SPRRegisterClass) {
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FCPYS), DestReg)
.addReg(SrcReg));
} else if (DestRC == ARM::DPRRegisterClass) {
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FCPYD), DestReg)
.addReg(SrcReg));
} else if (DestRC == ARM::DPR_VFP2RegisterClass ||
DestRC == ARM::DPR_8RegisterClass ||
SrcRC == ARM::DPR_VFP2RegisterClass ||
SrcRC == ARM::DPR_8RegisterClass) {
// Always use neon reg-reg move if source or dest is NEON-only regclass.
BuildMI(MBB, I, DL, get(ARM::VMOVD), DestReg).addReg(SrcReg);
} else if (DestRC == ARM::DPRRegisterClass) {
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FCPYD), DestReg)
.addReg(SrcReg));
} else if (DestRC == ARM::QPRRegisterClass ||
DestRC == ARM::QPR_VFP2RegisterClass) {
DestRC == ARM::QPR_VFP2RegisterClass ||
DestRC == ARM::QPR_8RegisterClass) {
BuildMI(MBB, I, DL, get(ARM::VMOVQ), DestReg).addReg(SrcReg);
} else {
return false;
@ -736,7 +721,8 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
.addFrameIndex(FI).addImm(0).addMemOperand(MMO));
} else {
assert((RC == ARM::QPRRegisterClass ||
RC == ARM::QPR_VFP2RegisterClass) && "Unknown regclass!");
RC == ARM::QPR_VFP2RegisterClass ||
RC == ARM::QPR_8RegisterClass) && "Unknown regclass!");
// FIXME: Neon instructions should support predicates
BuildMI(MBB, I, DL, get(ARM::VLDRQ), DestReg).addFrameIndex(FI).addImm(0).
addMemOperand(MMO);