[PATCH] [DAGCombiner] Remove extra bitcasts surrounding vector shuffles
Simon Pilgrim
llvm-dev at redking.me.uk
Wed Apr 22 08:09:02 PDT 2015
Thanks Quentin,
I've added an extra test for peeking through the bitcasted masked constant vectors. The UNDEF implementation was never getting hit so I dropped that for simplicity (visitVECTOR_SHUFFLE has support for cases where the second operand is UNDEF already).
REPOSITORY
rL LLVM
http://reviews.llvm.org/D9097
Files:
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
test/CodeGen/X86/combine-or.ll
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