llvm-6502/2012-03-15-build_vector_wl.ll at 902ba576fd50673fa1de1a156f0a514a0c85dbbd - llvm-6502 - Applefritter: Git

6502/llvm-6502

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Nadav Rotem 6431ff96be When optimizing certain BUILD_VECTOR nodes into other BUILD_VECTOR nodes, add the new node into the work list because there is a potential for further optimizations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152784 91177308-0d34-0410-b5e6-96231b3b80d8

2012-03-15 08:49:06 +00:00

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 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx -mattr=+avx | FileCheck %s
 ; CHECK: build_vector_again
 define <4 x i8> @build_vector_again(<16 x i8> %in) nounwind readnone {
 entry:
   %out = shufflevector <16 x i8> %in, <16 x i8> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
 ; CHECK: shufb
   ret <4 x i8> %out
 ; CHECK: ret
 }