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Fix pr7110: For non-Darwin targets UnspilledCS1GPRs may include high registers.

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Do not use those for Thumb1 functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103730 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson 2010-05-13 19:58:24 +00:00
parent ed36aac081
commit 1190c14b54
1 changed files with 3 additions and 1 deletions
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4
lib/Target/ARM/ARMBaseRegisterInfo.cpp
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@ -779,7 +779,9 @@ ARMBaseRegisterInfo::processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
while (NumExtras && !UnspilledCS1GPRs.empty()) {
unsigned Reg = UnspilledCS1GPRs.back();
UnspilledCS1GPRs.pop_back();
if (!isReservedReg(MF, Reg)) {
if (!isReservedReg(MF, Reg) &&
(!AFI->isThumb1OnlyFunction() || isARMLowRegister(Reg) ||
Reg == ARM::LR)) {
Extras.push_back(Reg);
NumExtras--;
}