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| author | Jim Grosbach <grosbach@apple.com> | 2011-06-30 22:10:46 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2011-06-30 22:10:46 +0000 |
| commit | 63b46faeb8acae9b7e5f865b7417dc00b9b9dad3 (patch) | |
| tree | 9dd91095e265db1ecbefc5b968d2f0ee04a7fdc0 /lib/Target/ARM/Thumb1FrameLowering.cpp | |
| parent | 2541c41f3e2af94585e14353a91f02facd65e415 (diff) | |
| download | llvm-63b46faeb8acae9b7e5f865b7417dc00b9b9dad3.tar.gz llvm-63b46faeb8acae9b7e5f865b7417dc00b9b9dad3.tar.bz2 llvm-63b46faeb8acae9b7e5f865b7417dc00b9b9dad3.tar.xz | |
Thumb1 register to register MOV instruction is predicable.
Fix a FIXME and allow predication (in Thumb2) for the T1 register to
register MOV instructions. This allows some better codegen with
if-conversion (as seen in the test updates), plus it lays the groundwork
for pseudo-izing the tMOVCC instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134197 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/Thumb1FrameLowering.cpp')
| -rw-r--r-- | lib/Target/ARM/Thumb1FrameLowering.cpp | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/lib/Target/ARM/Thumb1FrameLowering.cpp b/lib/Target/ARM/Thumb1FrameLowering.cpp index 80b57c9545..326d4af198 100644 --- a/lib/Target/ARM/Thumb1FrameLowering.cpp +++ b/lib/Target/ARM/Thumb1FrameLowering.cpp @@ -160,7 +160,8 @@ void Thumb1FrameLowering::emitPrologue(MachineFunction &MF) const { // will be allocated after this, so we can still use the base pointer // to reference locals. if (RegInfo->hasBasePointer(MF)) - BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVgpr2gpr), BasePtr).addReg(ARM::SP); + AddDefaultPred(BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVgpr2gpr), BasePtr) + .addReg(ARM::SP)); // If the frame has variable sized objects then the epilogue must restore // the sp from fp. We can assume there's an FP here since hasFP already @@ -239,11 +240,13 @@ void Thumb1FrameLowering::emitEpilogue(MachineFunction &MF, "No scratch register to restore SP from FP!"); emitThumbRegPlusImmediate(MBB, MBBI, dl, ARM::R4, FramePtr, -NumBytes, TII, *RegInfo); - BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVtgpr2gpr), ARM::SP) - .addReg(ARM::R4); + AddDefaultPred(BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVtgpr2gpr), + ARM::SP) + .addReg(ARM::R4)); } else - BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVtgpr2gpr), ARM::SP) - .addReg(FramePtr); + AddDefaultPred(BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVtgpr2gpr), + ARM::SP) + .addReg(FramePtr)); } else { if (MBBI->getOpcode() == ARM::tBX_RET && &MBB.front() != MBBI && |