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Author SHA1 Message Date
Tim Shen 3ad8b43cc2 [MemCpy] Add comments for r279769 
Differential Revision: https://reviews.llvm.org/D23846

llvm-svn: 279778
 2016-08-25 21:03:46 +00:00
Tim Shen a3dbead2d6 [MemCpy] Check for alias in performMemCpyToMemSetOptzn, instead of the identity of two operands 
Summary:
This fixes pr29105. The reason is that lifetime marks creates new
aliasing pointers the original ones, but before this patch aliases
were not checked in performMemCpyToMemSetOptzn.

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D23846

llvm-svn: 279769
 2016-08-25 19:27:26 +00:00