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[X86][SSE] Add v2f64 u2 shuffle test 

Adds missing coverage for SHUFPD undef argument lowering, and also shows a missed opportunity to remove a unnecessary move compared to 02 shuffle mask.

llvm-svn: 322175
This commit is contained in:
Simon Pilgrim 2018-01-10 12:23:39 +00:00
parent 62930e57eb
commit a330a407c4
1 changed files with 29 additions and 1 deletions
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30
llvm/test/CodeGen/X86/vector-shuffle-128-v2.ll
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@ -298,7 +298,35 @@ define <2 x double> @shuffle_v2f64_21(<2 x double> %a, <2 x double> %b) {
%shuffle = shufflevector <2 x double> %a, <2 x double> %b, <2 x i32> <i32 2, i32 1>
ret <2 x double> %shuffle
}
define <2 x double> @shuffle_v2f64_u2(<2 x double> %a, <2 x double> %b) {
; SSE2-LABEL: shuffle_v2f64_u2:
; SSE2: # %bb.0:
; SSE2-NEXT: movlhps {{.*#+}} xmm1 = xmm1[0,0]
; SSE2-NEXT: movaps %xmm1, %xmm0
; SSE2-NEXT: retq
;
; SSE3-LABEL: shuffle_v2f64_u2:
; SSE3: # %bb.0:
; SSE3-NEXT: movddup {{.*#+}} xmm0 = xmm1[0,0]
; SSE3-NEXT: retq
;
; SSSE3-LABEL: shuffle_v2f64_u2:
; SSSE3: # %bb.0:
; SSSE3-NEXT: movddup {{.*#+}} xmm0 = xmm1[0,0]
; SSSE3-NEXT: retq
;
; SSE41-LABEL: shuffle_v2f64_u2:
; SSE41: # %bb.0:
; SSE41-NEXT: movddup {{.*#+}} xmm0 = xmm1[0,0]
; SSE41-NEXT: retq
;
; AVX-LABEL: shuffle_v2f64_u2:
; AVX: # %bb.0:
; AVX-NEXT: vmovddup {{.*#+}} xmm0 = xmm1[0,0]
; AVX-NEXT: retq
%shuffle = shufflevector <2 x double> %a, <2 x double> %b, <2 x i32> <i32 undef, i32 2>
ret <2 x double> %shuffle
}
define <2 x i64> @shuffle_v2i64_02(<2 x i64> %a, <2 x i64> %b) {
; SSE-LABEL: shuffle_v2i64_02: