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| author | Evan Cheng <evan.cheng@apple.com> | 2009-08-13 05:40:51 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-08-13 05:40:51 +0000 |
| commit | e5801bd220dfcaddbc0cbffe0b1f39656fb4b267 (patch) | |
| tree | 8ceddf6488c5741e5a5facb2fc39e5e03ee497ef /llvm/lib/Target/ARM/Thumb1InstrInfo.cpp | |
| parent | eb681981455ce3ee94e91975ef3f1a286a5bbfc0 (diff) | |
| download | bcm5719-llvm-e5801bd220dfcaddbc0cbffe0b1f39656fb4b267.tar.gz bcm5719-llvm-e5801bd220dfcaddbc0cbffe0b1f39656fb4b267.zip | |
It's ok to spill a tGPR register as long as it's still allocated a low register.
llvm-svn: 78893
Diffstat (limited to 'llvm/lib/Target/ARM/Thumb1InstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/Thumb1InstrInfo.cpp | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/llvm/lib/Target/ARM/Thumb1InstrInfo.cpp b/llvm/lib/Target/ARM/Thumb1InstrInfo.cpp index 533c7368128..dc4ce64fe75 100644 --- a/llvm/lib/Target/ARM/Thumb1InstrInfo.cpp +++ b/llvm/lib/Target/ARM/Thumb1InstrInfo.cpp @@ -91,12 +91,14 @@ canFoldMemoryOperand(const MachineInstr *MI, case ARM::tMOVgpr2gpr: { if (OpNum == 0) { // move -> store unsigned SrcReg = MI->getOperand(1).getReg(); - if (RI.isPhysicalRegister(SrcReg) && !isARMLowRegister(SrcReg)) + if (TargetRegisterInfo::isPhysicalRegister(SrcReg) && + !isARMLowRegister(SrcReg)) // tSpill cannot take a high register operand. return false; } else { // move -> load unsigned DstReg = MI->getOperand(0).getReg(); - if (RI.isPhysicalRegister(DstReg) && !isARMLowRegister(DstReg)) + if (TargetRegisterInfo::isPhysicalRegister(DstReg) && + !isARMLowRegister(DstReg)) // tRestore cannot target a high register operand. return false; } @@ -114,7 +116,9 @@ storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, DebugLoc DL = DebugLoc::getUnknownLoc(); if (I != MBB.end()) DL = I->getDebugLoc(); - assert(RC == ARM::tGPRRegisterClass && "Unknown regclass!"); + assert((RC == ARM::tGPRRegisterClass || + (TargetRegisterInfo::isPhysicalRegister(SrcReg) && + isARMLowRegister(SrcReg))) && "Unknown regclass!"); if (RC == ARM::tGPRRegisterClass) { AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::tSpill)) @@ -130,7 +134,9 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, DebugLoc DL = DebugLoc::getUnknownLoc(); if (I != MBB.end()) DL = I->getDebugLoc(); - assert(RC == ARM::tGPRRegisterClass && "Unknown regclass!"); + assert((RC == ARM::tGPRRegisterClass || + (TargetRegisterInfo::isPhysicalRegister(DestReg) && + isARMLowRegister(DestReg))) && "Unknown regclass!"); if (RC == ARM::tGPRRegisterClass) { AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::tRestore), DestReg) @@ -212,7 +218,8 @@ foldMemoryOperandImpl(MachineFunction &MF, MachineInstr *MI, if (OpNum == 0) { // move -> store unsigned SrcReg = MI->getOperand(1).getReg(); bool isKill = MI->getOperand(1).isKill(); - if (RI.isPhysicalRegister(SrcReg) && !isARMLowRegister(SrcReg)) + if (TargetRegisterInfo::isPhysicalRegister(SrcReg) && + !isARMLowRegister(SrcReg)) // tSpill cannot take a high register operand. break; NewMI = AddDefaultPred(BuildMI(MF, MI->getDebugLoc(), get(ARM::tSpill)) @@ -220,7 +227,8 @@ foldMemoryOperandImpl(MachineFunction &MF, MachineInstr *MI, .addFrameIndex(FI).addImm(0)); } else { // move -> load unsigned DstReg = MI->getOperand(0).getReg(); - if (RI.isPhysicalRegister(DstReg) && !isARMLowRegister(DstReg)) + if (TargetRegisterInfo::isPhysicalRegister(DstReg) && + !isARMLowRegister(DstReg)) // tRestore cannot target a high register operand. break; bool isDead = MI->getOperand(0).isDead(); |
