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| author | Chad Rosier <mcrosier@apple.com> | 2011-10-01 19:30:36 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2011-10-01 19:30:36 +0000 |
| commit | 2bfaf521aed6d486b2d80dbf12b84b456100cb47 (patch) | |
| tree | b77238d79c1de61d068c77ecab09ad224376fbeb /lib/Target/ARM/Thumb1FrameLowering.cpp | |
| parent | cbf26e3b574366fabfda50222817950b85517608 (diff) | |
| download | llvm-2bfaf521aed6d486b2d80dbf12b84b456100cb47.tar.gz llvm-2bfaf521aed6d486b2d80dbf12b84b456100cb47.tar.bz2 llvm-2bfaf521aed6d486b2d80dbf12b84b456100cb47.tar.xz | |
Revert r140924 "Attempt to fix dynamic stack realignment for thumb1 functions."
to appease nightly testers. Not quite there yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140953 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/Thumb1FrameLowering.cpp')
| -rw-r--r-- | lib/Target/ARM/Thumb1FrameLowering.cpp | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/lib/Target/ARM/Thumb1FrameLowering.cpp b/lib/Target/ARM/Thumb1FrameLowering.cpp index 9ff3ffcfa2..d4d59ea59d 100644 --- a/lib/Target/ARM/Thumb1FrameLowering.cpp +++ b/lib/Target/ARM/Thumb1FrameLowering.cpp @@ -155,27 +155,6 @@ void Thumb1FrameLowering::emitPrologue(MachineFunction &MF) const { AFI->setGPRCalleeSavedArea2Size(GPRCS2Size); AFI->setDPRCalleeSavedAreaSize(DPRCSSize); - if (RegInfo->needsStackRealignment(MF)) { - // We cannot use sp as source/dest register here, thus we're emitting the - // following sequence: - // mov r4, sp - // lsrs r4, r4, Log2MaxAlign - // lsls r4, r4, Log2MaxAlign - // mov sp, r4 - unsigned MaxAlign = MFI->getMaxAlignment(); - unsigned Log2MaxAlign = Log2_32(MaxAlign); - AddDefaultPred(BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVr), ARM::R4) - .addReg(ARM::SP, RegState::Kill)); - AddDefaultPred(AddDefaultT1CC(BuildMI(MBB, MBBI, dl, TII.get(ARM::tLSRri), ARM::R4)) - .addReg(ARM::R4, RegState::Kill) - .addImm(Log2MaxAlign)); - AddDefaultPred(AddDefaultT1CC(BuildMI(MBB, MBBI, dl, TII.get(ARM::tLSLri), ARM::R4)) - .addReg(ARM::R4, RegState::Kill) - .addImm(Log2MaxAlign)); - AddDefaultPred(BuildMI(MBB, MBBI, dl, TII.get(ARM::tMOVr), ARM::SP) - .addReg(ARM::R4, RegState::Kill)); - } - // If we need a base pointer, set it up here. It's whatever the value // of the stack pointer is at this point. Any variable size objects // will be allocated after this, so we can still use the base pointer |