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Initial support for allocation condition registers

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21246 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman
2005-04-12 07:04:16 +00:00
parent af2e3e0859
commit 7af0248af4
5 changed files with 67 additions and 13 deletions
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15
lib/Target/PowerPC/PPCRegisterInfo.cpp
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@@ -69,6 +69,11 @@ static unsigned getIdx(const TargetRegisterClass *RC) {
case 4: return 3;
case 8: return 4;
}
} else if (RC == PPC32::CRRCRegisterClass) {
switch (RC->getSize()) {
default: assert(0 && "Invalid data size!");
case 4: return 2;
}
}
std::cerr << "Invalid register class to getIdx()!\n";
abort();
@@ -85,6 +90,9 @@ PPC32RegisterInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
if (SrcReg == PPC::LR) {
BuildMI(MBB, MI, PPC::MFLR, 1, PPC::R11).addReg(PPC::LR);
addFrameReference(BuildMI(MBB, MI, OC, 3).addReg(PPC::R11),FrameIdx);
} else if (PPC32::CRRCRegisterClass == getClass(SrcReg)) {
BuildMI(MBB, MI, PPC::MFCR, 0, PPC::R11);
addFrameReference(BuildMI(MBB, MI, OC, 3).addReg(PPC::R11),FrameIdx);
} else {
addFrameReference(BuildMI(MBB, MI, OC, 3).addReg(SrcReg),FrameIdx);
}
@@ -101,6 +109,9 @@ PPC32RegisterInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
if (DestReg == PPC::LR) {
addFrameReference(BuildMI(MBB, MI, OC, 2, PPC::R11), FrameIdx);
BuildMI(MBB, MI, PPC::MTLR, 1).addReg(PPC::R11);
} else if (PPC32::CRRCRegisterClass == getClass(DestReg)) {
addFrameReference(BuildMI(MBB, MI, OC, 2, PPC::R11), FrameIdx);
BuildMI(MBB, MI, PPC::MTCRF, 1, DestReg).addReg(PPC::R11);
} else {
addFrameReference(BuildMI(MBB, MI, OC, 2, DestReg), FrameIdx);
}
@@ -116,7 +127,9 @@ void PPC32RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
BuildMI(MBB, MI, PPC::OR, 2, DestReg).addReg(SrcReg).addReg(SrcReg);
} else if (RC == PPC32::FPRCRegisterClass) {
BuildMI(MBB, MI, PPC::FMR, 1, DestReg).addReg(SrcReg);
} else {
} else if (RC == PPC32::CRRCRegisterClass) {
BuildMI(MBB, MI, PPC::MCRF, 1, DestReg).addReg(SrcReg);
} else {
std::cerr << "Attempt to copy register that is not GPR or FPR";
abort();
}