[PATCH] D45806: DAGcombiner: Handle correctly non-splat power of 2 -1 divisor
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Jun 27 06:12:37 PDT 2018
RKSimon updated this revision to Diff 153068.
RKSimon added a reviewer: efriedma.
RKSimon added a comment.
Refactored the patch to blend the special case values in at the end of the pow2 calculations.
I'll add the SignedMin case in a followup but I wanted to keep this patch focussed on the -1 divisor case.
Repository:
rL LLVM
https://reviews.llvm.org/D45806
Files:
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
test/CodeGen/X86/combine-sdiv.ll
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