6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-22 09:29:31 +00:00
Code Issues Projects Releases Wiki Activity

For Thumb2, try to use frame pointer references for stack slots even when a

Browse Source 
base register is available. rdar://8525298

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116729 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2010-10-18 18:39:46 +00:00
parent aa85c21633
commit 5c57639c28
1 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
lib/Target/ARM/ARMBaseRegisterInfo.cpp
View File

@ -953,8 +953,16 @@ ARMBaseRegisterInfo::ResolveFrameIndexReference(const MachineFunction &MF,
return FPOffset;
} else if (MFI->hasVarSizedObjects()) {
assert(hasBasePointer(MF) && "missing base pointer!");
// Use the base register since we have it.
FrameReg = BasePtr;
// Try to use the frame pointer if we can, else use the base pointer
// since it's available. This is handy for the emergency spill slot, in
// particular.
if (AFI->isThumb2Function()) {
if (FPOffset >= -255 && FPOffset < 0) {
FrameReg = getFrameRegister(MF);
return FPOffset;
}
} else
FrameReg = BasePtr;
} else if (AFI->isThumb2Function()) {
// In Thumb2 mode, the negative offset is very limited. Try to avoid
// out of range references.