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author | Chad Rosier <mcrosier@apple.com> | 2011-10-01 02:03:18 +0000 |
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committer | Chad Rosier <mcrosier@apple.com> | 2011-10-01 02:03:18 +0000 |
commit | 52490411259ccc34b8c59f3532e78442a46fffd7 (patch) | |
tree | 5f5869382a763dcf72f2d4e10a5d21d14f2159b5 /lib/Target/ARM/ARMBaseRegisterInfo.cpp | |
parent | b2ab2fa524f3f90376639037bd81924483cca0af (diff) | |
download | llvm-52490411259ccc34b8c59f3532e78442a46fffd7.tar.gz llvm-52490411259ccc34b8c59f3532e78442a46fffd7.tar.bz2 llvm-52490411259ccc34b8c59f3532e78442a46fffd7.tar.xz |
Attempt to fix dynamic stack realignment for thumb1 functions. It is in fact
useful if an optimization assumes the stack has been realigned. Credit to
Eli for his assistance.
rdar://10043857
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140924 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMBaseRegisterInfo.cpp')
-rw-r--r-- | lib/Target/ARM/ARMBaseRegisterInfo.cpp | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/lib/Target/ARM/ARMBaseRegisterInfo.cpp index 7c42342229..48e3c52460 100644 --- a/lib/Target/ARM/ARMBaseRegisterInfo.cpp +++ b/lib/Target/ARM/ARMBaseRegisterInfo.cpp @@ -626,13 +626,10 @@ bool ARMBaseRegisterInfo::hasBasePointer(const MachineFunction &MF) const { bool ARMBaseRegisterInfo::canRealignStack(const MachineFunction &MF) const { const MachineFrameInfo *MFI = MF.getFrameInfo(); - const ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>(); // We can't realign the stack if: // 1. Dynamic stack realignment is explicitly disabled, - // 2. This is a Thumb1 function (it's not useful, so we don't bother), or - // 3. There are VLAs in the function and the base pointer is disabled. - return (RealignStack && !AFI->isThumb1OnlyFunction() && - (!MFI->hasVarSizedObjects() || EnableBasePointer)); + // 2. There are VLAs in the function and the base pointer is disabled. + return (RealignStack && (!MFI->hasVarSizedObjects() || EnableBasePointer)); } bool ARMBaseRegisterInfo:: |