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Author SHA1 Message Date
Amara Emerson 54f60255a2 [InstCombine] Fix SimplifyLibCalls erasing an instruction while IC still had references to it. 
InstCombine keeps a worklist and assumes that optimizations don't
eraseFromParent() the instruction, which SimplifyLibCalls violates. This change
adds a new callback to SimplifyLibCalls to let clients specify their own hander
for erasing actions.

Differential Revision: https://reviews.llvm.org/D52729

llvm-svn: 344251
 2018-10-11 14:51:11 +00:00