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[X86][SSE] Add extra v16i16 shl x,c -> pmullw test 

We want to compare shifts with repeated vs non-repeated v8i16 shuffle masks (for PBLENDW ymm) 

llvm-svn: 336333
This commit is contained in:
Simon Pilgrim 2018-07-05 09:54:53 +00:00
parent 0bebf95944
commit 97e6afec2a
1 changed files with 27 additions and 0 deletions
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27
llvm/test/CodeGen/X86/lower-vec-shift.ll
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@ -255,6 +255,8 @@ define <8 x i32> @test10(<8 x i32>* %a) {
ret <8 x i32> %ashr
}
; test11 vs test12 - show difference between v16i16 that is repeated/non-repeated at v8i16 level (for PBLENDW masks).
define <16 x i16> @test11(<16 x i16> %a) {
; SSE-LABEL: test11:
; SSE: # %bb.0:
@ -277,3 +279,28 @@ define <16 x i16> @test11(<16 x i16> %a) {
%lshr = shl <16 x i16> %a, <i16 1, i16 3, i16 1, i16 1, i16 1, i16 3, i16 3, i16 3, i16 3, i16 3, i16 3, i16 1, i16 1, i16 1, i16 3, i16 1>
ret <16 x i16> %lshr
}
define <16 x i16> @test12(<16 x i16> %a) {
; SSE-LABEL: test12:
; SSE: # %bb.0:
; SSE-NEXT: movdqa {{.*#+}} xmm2 = [2,8,2,2,2,8,8,8]
; SSE-NEXT: pmullw %xmm2, %xmm0
; SSE-NEXT: pmullw %xmm2, %xmm1
; SSE-NEXT: retq
;
; AVX1-LABEL: test12:
; AVX1: # %bb.0:
; AVX1-NEXT: vextractf128 $1, %ymm0, %xmm1
; AVX1-NEXT: vmovdqa {{.*#+}} xmm2 = [2,8,2,2,2,8,8,8]
; AVX1-NEXT: vpmullw %xmm2, %xmm1, %xmm1
; AVX1-NEXT: vpmullw %xmm2, %xmm0, %xmm0
; AVX1-NEXT: vinsertf128 $1, %xmm1, %ymm0, %ymm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: test12:
; AVX2: # %bb.0:
; AVX2-NEXT: vpmullw {{.*}}(%rip), %ymm0, %ymm0
; AVX2-NEXT: retq
%lshr = shl <16 x i16> %a, <i16 1, i16 3, i16 1, i16 1, i16 1, i16 3, i16 3, i16 3, i16 1, i16 3, i16 1, i16 1, i16 1, i16 3, i16 3, i16 3>
ret <16 x i16> %lshr
}