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Commit 58814445 authored by Sanjay Patel's avatar Sanjay Patel
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Fix for PR20059 (instcombine reorders shufflevector after instruction that may trap) 

In PR20059 ( http://llvm.org/pr20059 ), instcombine eliminates shuffles that are necessary before performing an operation that can trap (srem).

This patch calls isSafeToSpeculativelyExecute() and bails out of the optimization in SimplifyVectorOp() if needed.

Differential Revision: http://reviews.llvm.org/D4424

llvm-svn: 212629
parent df734cdd
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