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Commit 3f251fb2 authored by Evan Cheng's avatar Evan Cheng
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Re-apply r110655 with fixes. Epilogue must restore sp from fp if the function... 

Re-apply r110655 with fixes. Epilogue must restore sp from fp if the function stack frame has a var-sized object.

Also added a test case to check for the added benefit of this patch: it's optimizing away the unnecessary restore of sp from fp for some non-leaf functions.

llvm-svn: 110707
parent a5c7d706
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