diff options
| author | Jim Grosbach <grosbach@apple.com> | 2011-06-13 21:18:25 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2011-06-13 21:18:25 +0000 |
| commit | dca85318218cfb66775f0c62f567d36ca5bef8a8 (patch) | |
| tree | 9925593a8e3ce56d415782329d20495628300226 /llvm/lib/Target/ARM/Thumb1FrameLowering.cpp | |
| parent | 871b71247b01d6e2392b586c320514a0b8662b22 (diff) | |
| download | bcm5719-llvm-dca85318218cfb66775f0c62f567d36ca5bef8a8.tar.gz bcm5719-llvm-dca85318218cfb66775f0c62f567d36ca5bef8a8.zip | |
Fix coordination for using R4 in Thumb1 as a scratch for SP restore.
The logic for reserving R4 for use as a scratch needs to match that for
actually using it. Also, it's not necessary for immediate <=508, so adjust
the value checked.
llvm-svn: 132934
Diffstat (limited to 'llvm/lib/Target/ARM/Thumb1FrameLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/Thumb1FrameLowering.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Target/ARM/Thumb1FrameLowering.cpp b/llvm/lib/Target/ARM/Thumb1FrameLowering.cpp index dee3d278203..e56d48168c2 100644 --- a/llvm/lib/Target/ARM/Thumb1FrameLowering.cpp +++ b/llvm/lib/Target/ARM/Thumb1FrameLowering.cpp @@ -136,8 +136,8 @@ void Thumb1FrameLowering::emitPrologue(MachineFunction &MF) const { BuildMI(MBB, MBBI, dl, TII.get(ARM::tADDrSPi), FramePtr) .addFrameIndex(FramePtrSpillFI).addImm(0) .setMIFlags(MachineInstr::FrameSetup); - if (NumBytes > 7) - // If offset is > 7 then sp cannot be adjusted in a single instruction, + if (NumBytes > 508) + // If offset is > 508 then sp cannot be adjusted in a single instruction, // try restoring from fp instead. AFI->setShouldRestoreSPFromFP(true); } |
