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[X86][AVX2] Added tests that demonstrate duplicate broadcasts

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We don't yet decode broadcasts as a target shuffle

llvm-svn: 275808
This commit is contained in:
Simon Pilgrim 2016-07-18 16:17:34 +00:00
parent 4e51f4e9f7
commit 3d93f09a1c
1 changed files with 60 additions and 0 deletions
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60
test/CodeGen/X86/vector-shuffle-combining-avx2.ll
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@ -203,6 +203,66 @@ define <4 x double> @combine_permd_as_vpbroadcastsd256(<2 x double> %a) {
ret <4 x double> %4
}
define <16 x i8> @combine_vpbroadcast_pshufb_as_vpbroadcastb128(<16 x i8> %a) {
; CHECK-LABEL: combine_vpbroadcast_pshufb_as_vpbroadcastb128:
; CHECK: # BB#0:
; CHECK-NEXT: vpbroadcastb %xmm0, %xmm0
; CHECK-NEXT: vpbroadcastb %xmm0, %xmm0
; CHECK-NEXT: retq
%1 = shufflevector <16 x i8> %a, <16 x i8> undef, <16 x i32> zeroinitializer
%2 = call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %1, <16 x i8> zeroinitializer)
ret <16 x i8> %2
}
define <32 x i8> @combine_vpbroadcast_pshufb_as_vpbroadcastb256(<32 x i8> %a) {
; CHECK-LABEL: combine_vpbroadcast_pshufb_as_vpbroadcastb256:
; CHECK: # BB#0:
; CHECK-NEXT: vpbroadcastb %xmm0, %ymm0
; CHECK-NEXT: vpxor %ymm1, %ymm1, %ymm1
; CHECK-NEXT: vpshufb %ymm1, %ymm0, %ymm0
; CHECK-NEXT: retq
%1 = shufflevector <32 x i8> %a, <32 x i8> undef, <32 x i32> zeroinitializer
%2 = call <32 x i8> @llvm.x86.avx2.pshuf.b(<32 x i8> %1, <32 x i8> zeroinitializer)
ret <32 x i8> %2
}
define <4 x float> @combine_vpbroadcast_pshufb_as_vpbroadcastss128(<4 x float> %a) {
; CHECK-LABEL: combine_vpbroadcast_pshufb_as_vpbroadcastss128:
; CHECK: # BB#0:
; CHECK-NEXT: vbroadcastss %xmm0, %xmm0
; CHECK-NEXT: vbroadcastss %xmm0, %xmm0
; CHECK-NEXT: retq
%1 = shufflevector <4 x float> %a, <4 x float> undef, <4 x i32> zeroinitializer
%2 = bitcast <4 x float> %1 to <16 x i8>
%3 = call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %2, <16 x i8> <i8 0, i8 1, i8 2, i8 3, i8 0, i8 1, i8 2, i8 3, i8 0, i8 1, i8 2, i8 3, i8 0, i8 1, i8 2, i8 3>)
%4 = bitcast <16 x i8> %3 to <4 x float>
ret <4 x float> %4
}
define <8 x float> @combine_vpbroadcast_permd_as_vpbroadcastss256(<4 x float> %a) {
; CHECK-LABEL: combine_vpbroadcast_permd_as_vpbroadcastss256:
; CHECK: # BB#0:
; CHECK-NEXT: vbroadcastss %xmm0, %ymm0
; CHECK-NEXT: vbroadcastss %xmm0, %ymm0
; CHECK-NEXT: retq
%1 = shufflevector <4 x float> %a, <4 x float> undef, <8 x i32> zeroinitializer
%2 = call <8 x float> @llvm.x86.avx2.permps(<8 x float> %1, <8 x i32> zeroinitializer)
ret <8 x float> %2
}
define <4 x double> @combine_vpbroadcast_permd_as_vpbroadcastsd256(<2 x double> %a) {
; CHECK-LABEL: combine_vpbroadcast_permd_as_vpbroadcastsd256:
; CHECK: # BB#0:
; CHECK-NEXT: vbroadcastsd %xmm0, %ymm0
; CHECK-NEXT: vbroadcastsd %xmm0, %ymm0
; CHECK-NEXT: retq
%1 = shufflevector <2 x double> %a, <2 x double> undef, <4 x i32> zeroinitializer
%2 = bitcast <4 x double> %1 to <8 x float>
%3 = call <8 x float> @llvm.x86.avx2.permps(<8 x float> %2, <8 x i32> <i32 0, i32 1, i32 0, i32 1, i32 0, i32 1, i32 0, i32 1>)
%4 = bitcast <8 x float> %3 to <4 x double>
ret <4 x double> %4
}
define <8 x i32> @combine_permd_as_permq(<8 x i32> %a) {
; CHECK-LABEL: combine_permd_as_permq:
; CHECK: # BB#0: