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| author | Eric Christopher <echristo@gmail.com> | 2015-02-13 00:39:27 +0000 |
|---|---|---|
| committer | Eric Christopher <echristo@gmail.com> | 2015-02-13 00:39:27 +0000 |
| commit | f71609b5ddd3a3059b4ae184b6b5e7f5689275d6 (patch) | |
| tree | bdde4ba46b442c322dd13c1266ccb37b98f4d1e8 /llvm/lib/Target/PowerPC/PPCFrameLowering.cpp | |
| parent | 8ec536e3ddbbe1d6a2653485a3ad6133881be168 (diff) | |
| download | bcm5719-llvm-f71609b5ddd3a3059b4ae184b6b5e7f5689275d6.tar.gz bcm5719-llvm-f71609b5ddd3a3059b4ae184b6b5e7f5689275d6.zip | |
The return save offset can be computed at initialization time - do
so and save the value.
llvm-svn: 228996
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCFrameLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCFrameLowering.cpp | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp b/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp index 95143d54c7e..33f66fed81c 100644 --- a/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp +++ b/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp @@ -36,10 +36,17 @@ static const uint16_t VRRegNo[] = { PPC::V24, PPC::V25, PPC::V26, PPC::V27, PPC::V28, PPC::V29, PPC::V30, PPC::V31 }; +static unsigned computeReturnSaveOffset(const PPCSubtarget &STI) { + if (STI.isDarwinABI()) + return STI.isPPC64() ? 16 : 8; + // SVR4 ABI: + return STI.isPPC64() ? 16 : 4; +} + PPCFrameLowering::PPCFrameLowering(const PPCSubtarget &STI) : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, (STI.hasQPX() || STI.isBGQ()) ? 32 : 16, 0), - Subtarget(STI) {} + Subtarget(STI), ReturnSaveOffset(computeReturnSaveOffset(Subtarget)) {} // With the SVR4 ABI, callee-saved registers have fixed offsets on the stack. const PPCFrameLowering::SpillSlot *PPCFrameLowering::getCalleeSavedSpillSlots( @@ -598,7 +605,7 @@ void PPCFrameLowering::emitPrologue(MachineFunction &MF) const { assert((isPPC64 || !isSVR4ABI || !(!FrameSize && (MustSaveLR || HasFP))) && "FrameSize must be >0 to save/restore the FP or LR for 32-bit SVR4."); - int LROffset = PPCFrameLowering::getReturnSaveOffset(isPPC64, isDarwinABI); + int LROffset = getReturnSaveOffset(); int FPOffset = 0; if (HasFP) { @@ -936,7 +943,7 @@ void PPCFrameLowering::emitEpilogue(MachineFunction &MF, const MCInstrDesc& AddInst = TII.get( isPPC64 ? PPC::ADD8 : PPC::ADD4 ); - int LROffset = PPCFrameLowering::getReturnSaveOffset(isPPC64, isDarwinABI); + int LROffset = getReturnSaveOffset(); int FPOffset = 0; if (HasFP) { |
