[PATCH] D37762: [InstCombine] Remove single use restriction from InstCombine's explicit sinking code.
Craig Topper via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Sep 13 15:43:08 PDT 2017
craig.topper added a comment.
Looks like machine sinking fails because it can't handle the cmovs reading eflags. And it only considers one instruction at a time, but to sink the cmov you have to sink the eflags producer and the cmov together.
https://reviews.llvm.org/D37762
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