| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| define <4 x float> @test1(<4 x float> %v1) { |
| ; CHECK-LABEL: @test1( |
| ; CHECK: ret <4 x float> %v1 |
| %v2 = shufflevector <4 x float> %v1, <4 x float> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3> |
| ret <4 x float> %v2 |
| } |
| |
| define <4 x float> @test2(<4 x float> %v1) { |
| ; CHECK-LABEL: @test2( |
| ; CHECK: ret <4 x float> %v1 |
| %v2 = shufflevector <4 x float> %v1, <4 x float> %v1, <4 x i32> <i32 0, i32 5, i32 2, i32 7> |
| ret <4 x float> %v2 |
| } |
| |
| define float @test3(<4 x float> %A, <4 x float> %B, float %f) { |
| ; CHECK-LABEL: @test3( |
| ; CHECK: ret float %f |
| %C = insertelement <4 x float> %A, float %f, i32 0 |
| %D = shufflevector <4 x float> %C, <4 x float> %B, <4 x i32> <i32 5, i32 0, i32 2, i32 7> |
| %E = extractelement <4 x float> %D, i32 1 |
| ret float %E |
| } |
| |
| define i32 @test4(<4 x i32> %X) { |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NEXT: extractelement |
| ; CHECK-NEXT: ret |
| %tmp152.i53899.i = shufflevector <4 x i32> %X, <4 x i32> undef, <4 x i32> zeroinitializer |
| %tmp34 = extractelement <4 x i32> %tmp152.i53899.i, i32 0 |
| ret i32 %tmp34 |
| } |
| |
| define i32 @test5(<4 x i32> %X) { |
| ; CHECK-LABEL: @test5( |
| ; CHECK-NEXT: extractelement |
| ; CHECK-NEXT: ret |
| %tmp152.i53899.i = shufflevector <4 x i32> %X, <4 x i32> undef, <4 x i32> <i32 3, i32 2, i32 undef, i32 undef> |
| %tmp34 = extractelement <4 x i32> %tmp152.i53899.i, i32 0 |
| ret i32 %tmp34 |
| } |
| |
| define float @test6(<4 x float> %X) { |
| ; CHECK-LABEL: @test6( |
| ; CHECK-NEXT: extractelement |
| ; CHECK-NEXT: ret |
| %X1 = bitcast <4 x float> %X to <4 x i32> |
| %tmp152.i53899.i = shufflevector <4 x i32> %X1, <4 x i32> undef, <4 x i32> zeroinitializer |
| %tmp152.i53900.i = bitcast <4 x i32> %tmp152.i53899.i to <4 x float> |
| %tmp34 = extractelement <4 x float> %tmp152.i53900.i, i32 0 |
| ret float %tmp34 |
| } |
| |
| define <4 x float> @test7(<4 x float> %tmp45.i) { |
| ; CHECK-LABEL: @test7( |
| ; CHECK-NEXT: ret <4 x float> %tmp45.i |
| %tmp1642.i = shufflevector <4 x float> %tmp45.i, <4 x float> undef, <4 x i32> < i32 0, i32 1, i32 6, i32 7 > |
| ret <4 x float> %tmp1642.i |
| } |
| |
| ; This should turn into a single shuffle. |
| define <4 x float> @test8(<4 x float> %tmp, <4 x float> %tmp1) { |
| ; CHECK-LABEL: @test8( |
| ; CHECK-NEXT: shufflevector |
| ; CHECK-NEXT: ret |
| %tmp4 = extractelement <4 x float> %tmp, i32 1 |
| %tmp2 = extractelement <4 x float> %tmp, i32 3 |
| %tmp1.upgrd.1 = extractelement <4 x float> %tmp1, i32 0 |
| %tmp128 = insertelement <4 x float> undef, float %tmp4, i32 0 |
| %tmp130 = insertelement <4 x float> %tmp128, float undef, i32 1 |
| %tmp132 = insertelement <4 x float> %tmp130, float %tmp2, i32 2 |
| %tmp134 = insertelement <4 x float> %tmp132, float %tmp1.upgrd.1, i32 3 |
| ret <4 x float> %tmp134 |
| } |
| |
| ; Test fold of two shuffles where the first shuffle vectors inputs are a |
| ; different length then the second. |
| define <4 x i8> @test9(<16 x i8> %tmp6) nounwind { |
| ; CHECK-LABEL: @test9( |
| ; CHECK-NEXT: shufflevector |
| ; CHECK-NEXT: ret |
| %tmp7 = shufflevector <16 x i8> %tmp6, <16 x i8> undef, <4 x i32> < i32 13, i32 9, i32 4, i32 13 > ; <<4 x i8>> [#uses=1] |
| %tmp9 = shufflevector <4 x i8> %tmp7, <4 x i8> undef, <4 x i32> < i32 3, i32 1, i32 2, i32 0 > ; <<4 x i8>> [#uses=1] |
| ret <4 x i8> %tmp9 |
| } |
| |
| ; Same as test9, but make sure that "undef" mask values are not confused with |
| ; mask values of 2*N, where N is the mask length. These shuffles should not |
| ; be folded (because [8,9,4,8] may not be a mask supported by the target). |
| define <4 x i8> @test9a(<16 x i8> %tmp6) nounwind { |
| ; CHECK-LABEL: @test9a( |
| ; CHECK-NEXT: shufflevector |
| ; CHECK-NEXT: shufflevector |
| ; CHECK-NEXT: ret |
| %tmp7 = shufflevector <16 x i8> %tmp6, <16 x i8> undef, <4 x i32> < i32 undef, i32 9, i32 4, i32 8 > ; <<4 x i8>> [#uses=1] |
| %tmp9 = shufflevector <4 x i8> %tmp7, <4 x i8> undef, <4 x i32> < i32 3, i32 1, i32 2, i32 0 > ; <<4 x i8>> [#uses=1] |
| ret <4 x i8> %tmp9 |
| } |
| |
| ; Test fold of two shuffles where the first shuffle vectors inputs are a |
| ; different length then the second. |
| define <4 x i8> @test9b(<4 x i8> %tmp6, <4 x i8> %tmp7) nounwind { |
| ; CHECK-LABEL: @test9b( |
| ; CHECK-NEXT: shufflevector |
| ; CHECK-NEXT: ret |
| %tmp1 = shufflevector <4 x i8> %tmp6, <4 x i8> %tmp7, <8 x i32> <i32 0, i32 1, i32 4, i32 5, i32 4, i32 5, i32 2, i32 3> ; <<4 x i8>> [#uses=1] |
| %tmp9 = shufflevector <8 x i8> %tmp1, <8 x i8> undef, <4 x i32> <i32 0, i32 1, i32 4, i32 5> ; <<4 x i8>> [#uses=1] |
| ret <4 x i8> %tmp9 |
| } |
| |
| ; Redundant vector splats should be removed. Radar 8597790. |
| define <4 x i32> @test10(<4 x i32> %tmp5) nounwind { |
| ; CHECK-LABEL: @test10( |
| ; CHECK-NEXT: shufflevector |
| ; CHECK-NEXT: ret |
| %tmp6 = shufflevector <4 x i32> %tmp5, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef> |
| %tmp7 = shufflevector <4 x i32> %tmp6, <4 x i32> undef, <4 x i32> zeroinitializer |
| ret <4 x i32> %tmp7 |
| } |
| |
| ; Test fold of two shuffles where the two shufflevector inputs's op1 are |
| ; the same |
| define <8 x i8> @test11(<16 x i8> %tmp6) nounwind { |
| ; CHECK-LABEL: @test11( |
| ; CHECK-NEXT: shufflevector <16 x i8> %tmp6, <16 x i8> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7> |
| ; CHECK-NEXT: ret |
| %tmp1 = shufflevector <16 x i8> %tmp6, <16 x i8> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3> ; <<4 x i8>> [#uses=1] |
| %tmp2 = shufflevector <16 x i8> %tmp6, <16 x i8> undef, <4 x i32> <i32 4, i32 5, i32 6, i32 7> ; <<4 x i8>> [#uses=1] |
| %tmp3 = shufflevector <4 x i8> %tmp1, <4 x i8> %tmp2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7> ; <<8 x i8>> [#uses=1] |
| ret <8 x i8> %tmp3 |
| } |
| |
| ; Test fold of two shuffles where the first shufflevector's inputs are |
| ; the same as the second |
| define <8 x i8> @test12(<8 x i8> %tmp6, <8 x i8> %tmp2) nounwind { |
| ; CHECK-LABEL: @test12( |
| ; CHECK-NEXT: shufflevector <8 x i8> %tmp6, <8 x i8> %tmp2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 9, i32 8, i32 11, i32 12> |
| ; CHECK-NEXT: ret |
| %tmp1 = shufflevector <8 x i8> %tmp6, <8 x i8> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 5, i32 4, i32 undef, i32 7> ; <<8 x i8>> [#uses=1] |
| %tmp3 = shufflevector <8 x i8> %tmp1, <8 x i8> %tmp2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 9, i32 8, i32 11, i32 12> ; <<8 x i8>> [#uses=1] |
| ret <8 x i8> %tmp3 |
| } |
| |
| ; Test fold of two shuffles where the first shufflevector's inputs are |
| ; the same as the second |
| define <8 x i8> @test12a(<8 x i8> %tmp6, <8 x i8> %tmp2) nounwind { |
| ; CHECK-LABEL: @test12a( |
| ; CHECK-NEXT: shufflevector <8 x i8> %tmp2, <8 x i8> %tmp6, <8 x i32> <i32 0, i32 3, i32 1, i32 4, i32 8, i32 9, i32 10, i32 11> |
| ; CHECK-NEXT: ret |
| %tmp1 = shufflevector <8 x i8> %tmp6, <8 x i8> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 5, i32 4, i32 undef, i32 7> ; <<8 x i8>> [#uses=1] |
| %tmp3 = shufflevector <8 x i8> %tmp2, <8 x i8> %tmp1, <8 x i32> <i32 0, i32 3, i32 1, i32 4, i32 8, i32 9, i32 10, i32 11> ; <<8 x i8>> [#uses=1] |
| ret <8 x i8> %tmp3 |
| } |
| |
| define <2 x i8> @test13a(i8 %x1, i8 %x2) { |
| ; CHECK-LABEL: @test13a( |
| ; CHECK-NEXT: insertelement {{.*}} undef, i8 %x1, i32 1 |
| ; CHECK-NEXT: insertelement {{.*}} i8 %x2, i32 0 |
| ; CHECK-NEXT: add {{.*}} <i8 7, i8 5> |
| ; CHECK-NEXT: ret |
| %A = insertelement <2 x i8> undef, i8 %x1, i32 0 |
| %B = insertelement <2 x i8> %A, i8 %x2, i32 1 |
| %C = add <2 x i8> %B, <i8 5, i8 7> |
| %D = shufflevector <2 x i8> %C, <2 x i8> undef, <2 x i32> <i32 1, i32 0> |
| ret <2 x i8> %D |
| } |
| |
| define <2 x i8> @test13b(i8 %x) { |
| ; CHECK-LABEL: @test13b( |
| ; CHECK-NEXT: insertelement <2 x i8> undef, i8 %x, i32 1 |
| ; CHECK-NEXT: ret |
| %A = insertelement <2 x i8> undef, i8 %x, i32 0 |
| %B = shufflevector <2 x i8> %A, <2 x i8> undef, <2 x i32> <i32 undef, i32 0> |
| ret <2 x i8> %B |
| } |
| |
| define <2 x i8> @test13c(i8 %x1, i8 %x2) { |
| ; CHECK-LABEL: @test13c( |
| ; CHECK-NEXT: insertelement <2 x i8> {{.*}}, i32 0 |
| ; CHECK-NEXT: insertelement <2 x i8> {{.*}}, i32 1 |
| ; CHECK-NEXT: ret |
| %A = insertelement <4 x i8> undef, i8 %x1, i32 0 |
| %B = insertelement <4 x i8> %A, i8 %x2, i32 2 |
| %C = shufflevector <4 x i8> %B, <4 x i8> undef, <2 x i32> <i32 0, i32 2> |
| ret <2 x i8> %C |
| } |
| |
| define void @test14(i16 %conv10) { |
| %tmp = alloca <4 x i16>, align 8 |
| %vecinit6 = insertelement <4 x i16> undef, i16 23, i32 3 |
| store <4 x i16> %vecinit6, <4 x i16>* undef |
| %tmp1 = load <4 x i16>* undef |
| %vecinit11 = insertelement <4 x i16> undef, i16 %conv10, i32 3 |
| %div = udiv <4 x i16> %tmp1, %vecinit11 |
| store <4 x i16> %div, <4 x i16>* %tmp |
| %tmp4 = load <4 x i16>* %tmp |
| %tmp5 = shufflevector <4 x i16> %tmp4, <4 x i16> undef, <2 x i32> <i32 2, i32 0> |
| %cmp = icmp ule <2 x i16> %tmp5, undef |
| %sext = sext <2 x i1> %cmp to <2 x i16> |
| ret void |
| } |
| |
| ; Check that sequences of insert/extract element are |
| ; collapsed into valid shuffle instruction with correct shuffle indexes. |
| |
| define <4 x float> @test15a(<4 x float> %LHS, <4 x float> %RHS) { |
| ; CHECK-LABEL: @test15a |
| ; CHECK-NEXT: shufflevector <4 x float> %LHS, <4 x float> %RHS, <4 x i32> <i32 4, i32 0, i32 6, i32 6> |
| ; CHECK-NEXT: ret <4 x float> %tmp4 |
| %tmp1 = extractelement <4 x float> %LHS, i32 0 |
| %tmp2 = insertelement <4 x float> %RHS, float %tmp1, i32 1 |
| %tmp3 = extractelement <4 x float> %RHS, i32 2 |
| %tmp4 = insertelement <4 x float> %tmp2, float %tmp3, i32 3 |
| ret <4 x float> %tmp4 |
| } |
| |
| define <4 x float> @test15b(<4 x float> %LHS, <4 x float> %RHS) { |
| ; CHECK-LABEL: @test15b |
| ; CHECK-NEXT: shufflevector <4 x float> %LHS, <4 x float> %RHS, <4 x i32> <i32 4, i32 3, i32 6, i32 6> |
| ; CHECK-NEXT: ret <4 x float> %tmp5 |
| %tmp0 = extractelement <4 x float> %LHS, i32 3 |
| %tmp1 = insertelement <4 x float> %RHS, float %tmp0, i32 0 |
| %tmp2 = extractelement <4 x float> %tmp1, i32 0 |
| %tmp3 = insertelement <4 x float> %RHS, float %tmp2, i32 1 |
| %tmp4 = extractelement <4 x float> %RHS, i32 2 |
| %tmp5 = insertelement <4 x float> %tmp3, float %tmp4, i32 3 |
| ret <4 x float> %tmp5 |
| } |
| |