[PATCH] D14588: [X86][SSE] Transform truncation from v8i32/v16i32 to v8i8/v16i8 into bitand and X86ISD::PACKUS operations during DAG combine.
Cong Hou via llvm-commits
llvm-commits at lists.llvm.org
Mon Nov 30 12:29:14 PST 2015
congh updated this revision to Diff 41424.
congh added a comment.
Stop using SHUFP as it is for floating points and can cause domain switch.
Also update the test case by adding AVX512 test and v16i64 to v16i8 truncation.
http://reviews.llvm.org/D14588
Files:
lib/Target/X86/X86ISelLowering.cpp
test/CodeGen/X86/vector-trunc.ll
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