llvm-mirror/2012-03-15-build_vector_wl.ll at dd8d9c10a3c2d5d2c85bd9ecc9bfb470636d38fd - llvm-mirror - Git.je (Gitea)

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Nadav Rotem 8cf9105f96 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.

llvm-svn: 152784

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
 }