mirror of
https://github.com/c64scene-ar/llvm-6502.git
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e4546cb71e
index greater than the size of the vector is invalid. The shuffle may be shrinking the size of the vector. Fixes a crash! Also drop the maximum recursion depth of the safety check for this optimization to five. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183080 91177308-0d34-0410-b5e6-96231b3b80d8
188 lines
7.7 KiB
LLVM
188 lines
7.7 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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define <4 x float> @test1(<4 x float> %v1) {
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; CHECK: @test1
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; CHECK: ret <4 x float> %v1
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%v2 = shufflevector <4 x float> %v1, <4 x float> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
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ret <4 x float> %v2
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}
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define <4 x float> @test2(<4 x float> %v1) {
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; CHECK: @test2
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; CHECK: ret <4 x float> %v1
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%v2 = shufflevector <4 x float> %v1, <4 x float> %v1, <4 x i32> <i32 0, i32 5, i32 2, i32 7>
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ret <4 x float> %v2
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}
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define float @test3(<4 x float> %A, <4 x float> %B, float %f) {
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; CHECK: @test3
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; CHECK: ret float %f
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%C = insertelement <4 x float> %A, float %f, i32 0
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%D = shufflevector <4 x float> %C, <4 x float> %B, <4 x i32> <i32 5, i32 0, i32 2, i32 7>
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%E = extractelement <4 x float> %D, i32 1
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ret float %E
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}
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define i32 @test4(<4 x i32> %X) {
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; CHECK: @test4
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; CHECK-NEXT: extractelement
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; CHECK-NEXT: ret
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%tmp152.i53899.i = shufflevector <4 x i32> %X, <4 x i32> undef, <4 x i32> zeroinitializer
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%tmp34 = extractelement <4 x i32> %tmp152.i53899.i, i32 0
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ret i32 %tmp34
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}
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define i32 @test5(<4 x i32> %X) {
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; CHECK: @test5
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; CHECK-NEXT: extractelement
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; CHECK-NEXT: ret
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%tmp152.i53899.i = shufflevector <4 x i32> %X, <4 x i32> undef, <4 x i32> <i32 3, i32 2, i32 undef, i32 undef>
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%tmp34 = extractelement <4 x i32> %tmp152.i53899.i, i32 0
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ret i32 %tmp34
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}
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define float @test6(<4 x float> %X) {
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; CHECK: @test6
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; CHECK-NEXT: extractelement
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; CHECK-NEXT: ret
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%X1 = bitcast <4 x float> %X to <4 x i32>
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%tmp152.i53899.i = shufflevector <4 x i32> %X1, <4 x i32> undef, <4 x i32> zeroinitializer
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%tmp152.i53900.i = bitcast <4 x i32> %tmp152.i53899.i to <4 x float>
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%tmp34 = extractelement <4 x float> %tmp152.i53900.i, i32 0
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ret float %tmp34
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}
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define <4 x float> @test7(<4 x float> %tmp45.i) {
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; CHECK: @test7
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; CHECK-NEXT: ret <4 x float> %tmp45.i
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%tmp1642.i = shufflevector <4 x float> %tmp45.i, <4 x float> undef, <4 x i32> < i32 0, i32 1, i32 6, i32 7 >
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ret <4 x float> %tmp1642.i
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}
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; This should turn into a single shuffle.
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define <4 x float> @test8(<4 x float> %tmp, <4 x float> %tmp1) {
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; CHECK: @test8
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; CHECK-NEXT: shufflevector
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; CHECK-NEXT: ret
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%tmp4 = extractelement <4 x float> %tmp, i32 1
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%tmp2 = extractelement <4 x float> %tmp, i32 3
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%tmp1.upgrd.1 = extractelement <4 x float> %tmp1, i32 0
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%tmp128 = insertelement <4 x float> undef, float %tmp4, i32 0
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%tmp130 = insertelement <4 x float> %tmp128, float undef, i32 1
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%tmp132 = insertelement <4 x float> %tmp130, float %tmp2, i32 2
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%tmp134 = insertelement <4 x float> %tmp132, float %tmp1.upgrd.1, i32 3
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ret <4 x float> %tmp134
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}
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; Test fold of two shuffles where the first shuffle vectors inputs are a
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; different length then the second.
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define <4 x i8> @test9(<16 x i8> %tmp6) nounwind {
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; CHECK: @test9
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; CHECK-NEXT: shufflevector
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; CHECK-NEXT: ret
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%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]
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%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]
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ret <4 x i8> %tmp9
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}
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; Same as test9, but make sure that "undef" mask values are not confused with
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; mask values of 2*N, where N is the mask length. These shuffles should not
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; be folded (because [8,9,4,8] may not be a mask supported by the target).
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define <4 x i8> @test9a(<16 x i8> %tmp6) nounwind {
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; CHECK: @test9a
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; CHECK-NEXT: shufflevector
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; CHECK-NEXT: shufflevector
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; CHECK-NEXT: ret
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%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]
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%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]
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ret <4 x i8> %tmp9
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}
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; Test fold of two shuffles where the first shuffle vectors inputs are a
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; different length then the second.
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define <4 x i8> @test9b(<4 x i8> %tmp6, <4 x i8> %tmp7) nounwind {
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; CHECK: @test9
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; CHECK-NEXT: shufflevector
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; CHECK-NEXT: ret
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%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]
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%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]
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ret <4 x i8> %tmp9
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}
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; Redundant vector splats should be removed. Radar 8597790.
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define <4 x i32> @test10(<4 x i32> %tmp5) nounwind {
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; CHECK: @test10
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; CHECK-NEXT: shufflevector
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; CHECK-NEXT: ret
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%tmp6 = shufflevector <4 x i32> %tmp5, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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%tmp7 = shufflevector <4 x i32> %tmp6, <4 x i32> undef, <4 x i32> zeroinitializer
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ret <4 x i32> %tmp7
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}
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; Test fold of two shuffles where the two shufflevector inputs's op1 are
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; the same
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define <8 x i8> @test11(<16 x i8> %tmp6) nounwind {
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; CHECK: @test11
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; 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>
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; CHECK-NEXT: ret
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%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]
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%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]
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%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]
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ret <8 x i8> %tmp3
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}
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; Test fold of two shuffles where the first shufflevector's inputs are
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; the same as the second
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define <8 x i8> @test12(<8 x i8> %tmp6, <8 x i8> %tmp2) nounwind {
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; CHECK: @test12
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; 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>
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; CHECK-NEXT: ret
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%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]
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%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]
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ret <8 x i8> %tmp3
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}
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; Test fold of two shuffles where the first shufflevector's inputs are
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; the same as the second
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define <8 x i8> @test12a(<8 x i8> %tmp6, <8 x i8> %tmp2) nounwind {
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; CHECK: @test12a
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; 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>
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; CHECK-NEXT: ret
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%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]
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%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]
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ret <8 x i8> %tmp3
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}
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define <2 x i8> @test13a(i8 %x1, i8 %x2) {
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; CHECK: @test13a
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; CHECK-NEXT: insertelement {{.*}} undef, i8 %x1, i32 1
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; CHECK-NEXT: insertelement {{.*}} i8 %x2, i32 0
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; CHECK-NEXT: add {{.*}} <i8 7, i8 5>
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; CHECK-NEXT: ret
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%A = insertelement <2 x i8> undef, i8 %x1, i32 0
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%B = insertelement <2 x i8> %A, i8 %x2, i32 1
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%C = add <2 x i8> %B, <i8 5, i8 7>
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%D = shufflevector <2 x i8> %C, <2 x i8> undef, <2 x i32> <i32 1, i32 0>
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ret <2 x i8> %D
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}
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define <2 x i8> @test13b(i8 %x) {
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; CHECK: @test13b
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; CHECK-NEXT: insertelement <2 x i8> undef, i8 %x, i32 1
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; CHECK-NEXT: ret
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%A = insertelement <2 x i8> undef, i8 %x, i32 0
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%B = shufflevector <2 x i8> %A, <2 x i8> undef, <2 x i32> <i32 undef, i32 0>
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ret <2 x i8> %B
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}
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define <2 x i8> @test13c(i8 %x1, i8 %x2) {
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; CHECK: @test13c
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; CHECK-NEXT: insertelement <2 x i8> {{.*}}, i32 0
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; CHECK-NEXT: insertelement <2 x i8> {{.*}}, i32 1
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; CHECK-NEXT: ret
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%A = insertelement <4 x i8> undef, i8 %x1, i32 0
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%B = insertelement <4 x i8> %A, i8 %x2, i32 2
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%C = shufflevector <4 x i8> %B, <4 x i8> undef, <2 x i32> <i32 0, i32 2>
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ret <2 x i8> %C
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}
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