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eliminate unnecessary reset of SP in epilog on darwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34824 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1290,7 +1290,7 @@ void ARMRegisterInfo::emitEpilogue(MachineFunction &MF,
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} else {
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// Darwin ABI requires FP to point to the stack slot that contains the
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// previous FP.
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if (STI.isTargetDarwin() || hasFP(MF)) {
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if ((STI.isTargetDarwin() && NumBytes) || hasFP(MF)) {
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NumBytes = AFI->getFramePtrSpillOffset() - NumBytes;
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// Reset SP based on frame pointer only if the stack frame extends beyond
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// frame pointer stack slot or target is ELF and the function has FP.
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