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Add a testcase for 155440

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155475 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem 2012-04-24 19:45:28 +00:00
parent ddb1420e17
commit 34a13bb412
1 changed files with 13 additions and 0 deletions
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test/CodeGen/X86/avx2-shuffle.ll Normal file
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=core-avx2 -mattr=+avx2 | FileCheck %s
; Make sure that we don't match this shuffle using the vpblendw instruction.
; The mask for the vpblendw instruction needs to be identical for both halves
; of the YMM.
; CHECK: blendw1
; CHECK-NOT: vpblendw
; CHECK: ret
define <16 x i16> @blendw1(<16 x i16> %a, <16 x i16> %b) nounwind alwaysinline {
%t = shufflevector <16 x i16> %a, <16 x i16> %b, <16 x i32> <i32 0, i32 17, i32 18, i32 3, i32 20, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
ret <16 x i16> %t
}