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insertelement (insertelement X, Y, IdxC1), ScalarC, IdxC2 --> insertelement (insertelement X, ScalarC, IdxC2), Y, IdxC1 As noted in the code comment and seen in the test changes, the motivation is that by pulling constant insertion up, we may be able to constant fold some insertelement instructions. Differential Revision: https://reviews.llvm.org/D31196 llvm-svn: 298520
96 lines
4.1 KiB
LLVM
96 lines
4.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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; insertelements should fold to shuffle
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define <4 x float> @foo(<4 x float> %x) {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: [[INS2:%.*]] = shufflevector <4 x float> %x, <4 x float> <float undef, float 1.000000e+00, float 2.000000e+00, float undef>, <4 x i32> <i32 0, i32 5, i32 6, i32 3>
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; CHECK-NEXT: ret <4 x float> [[INS2]]
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;
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%ins1 = insertelement<4 x float> %x, float 1.0, i32 1
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%ins2 = insertelement<4 x float> %ins1, float 2.0, i32 2
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ret <4 x float> %ins2
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}
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; Insert of a constant is canonicalized ahead of insert of a variable.
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define <4 x float> @bar(<4 x float> %x, float %a) {
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; CHECK-LABEL: @bar(
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; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x float> %x, float 2.000000e+00, i32 2
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; CHECK-NEXT: [[INS2:%.*]] = insertelement <4 x float> [[TMP1]], float %a, i32 1
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; CHECK-NEXT: ret <4 x float> [[INS2]]
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;
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%ins1 = insertelement<4 x float> %x, float %a, i32 1
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%ins2 = insertelement<4 x float> %ins1, float 2.0, i32 2
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ret <4 x float> %ins2
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}
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define <4 x float> @baz(<4 x float> %x, i32 %a) {
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; CHECK-LABEL: @baz(
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; CHECK-NEXT: [[INS1:%.*]] = insertelement <4 x float> %x, float 1.000000e+00, i32 1
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; CHECK-NEXT: [[INS2:%.*]] = insertelement <4 x float> [[INS1]], float 2.000000e+00, i32 %a
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; CHECK-NEXT: ret <4 x float> [[INS2]]
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;
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%ins1 = insertelement<4 x float> %x, float 1.0, i32 1
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%ins2 = insertelement<4 x float> %ins1, float 2.0, i32 %a
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ret <4 x float> %ins2
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}
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; insertelements should fold to shuffle
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define <4 x float> @bazz(<4 x float> %x, i32 %a) {
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; CHECK-LABEL: @bazz(
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; CHECK-NEXT: [[INS1:%.*]] = insertelement <4 x float> %x, float 1.000000e+00, i32 3
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; CHECK-NEXT: [[INS2:%.*]] = insertelement <4 x float> [[INS1]], float 5.000000e+00, i32 %a
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; CHECK-NEXT: [[INS5:%.*]] = shufflevector <4 x float> [[INS2]], <4 x float> <float undef, float 1.000000e+00, float 2.000000e+00, float undef>, <4 x i32> <i32 0, i32 5, i32 6, i32 3>
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; CHECK-NEXT: [[INS6:%.*]] = insertelement <4 x float> [[INS5]], float 7.000000e+00, i32 %a
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; CHECK-NEXT: ret <4 x float> [[INS6]]
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;
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%ins1 = insertelement<4 x float> %x, float 1.0, i32 3
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%ins2 = insertelement<4 x float> %ins1, float 5.0, i32 %a
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%ins3 = insertelement<4 x float> %ins2, float 3.0, i32 2
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%ins4 = insertelement<4 x float> %ins3, float 1.0, i32 1
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%ins5 = insertelement<4 x float> %ins4, float 2.0, i32 2
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%ins6 = insertelement<4 x float> %ins5, float 7.0, i32 %a
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ret <4 x float> %ins6
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}
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define <4 x float> @bazzz(<4 x float> %x) {
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; CHECK-LABEL: @bazzz(
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; CHECK-NEXT: [[INS2:%.*]] = insertelement <4 x float> %x, float 2.000000e+00, i32 2
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; CHECK-NEXT: ret <4 x float> [[INS2]]
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;
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%ins1 = insertelement<4 x float> %x, float 1.0, i32 5
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%ins2 = insertelement<4 x float> %ins1, float 2.0, i32 2
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ret <4 x float> %ins2
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}
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define <4 x float> @bazzzz(<4 x float> %x) {
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; CHECK-LABEL: @bazzzz(
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; CHECK-NEXT: [[INS1:%.*]] = insertelement <4 x float> %x, float 1.000000e+00, i32 undef
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; CHECK-NEXT: [[INS2:%.*]] = insertelement <4 x float> %x, float 2.000000e+00, i32 2
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; CHECK-NEXT: ret <4 x float> [[INS2]]
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;
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%ins1 = insertelement<4 x float> %x, float 1.0, i32 undef
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%ins2 = insertelement<4 x float> %ins1, float 2.0, i32 2
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ret <4 x float> %ins2
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}
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define <4 x float> @bazzzzz() {
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; CHECK-LABEL: @bazzzzz(
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; CHECK-NEXT: ret <4 x float> <float 1.000000e+00, float 5.000000e+00, float 1.000000e+01, float 4.000000e+00>
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;
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%ins1 = insertelement <4 x float> insertelement (<4 x float> <float 1.0, float 2.0, float 3.0, float undef>, float 4.0, i32 3), float 5.0, i32 1
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%ins2 = insertelement<4 x float> %ins1, float 10.0, i32 2
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ret <4 x float> %ins2
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}
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define <4 x float> @bazzzzzz(<4 x float> %x, i32 %a) {
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; CHECK-LABEL: @bazzzzzz(
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; CHECK-NEXT: ret <4 x float> <float undef, float 5.000000e+00, float undef, float 4.000000e+00>
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;
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%ins1 = insertelement <4 x float> insertelement (<4 x float> shufflevector (<4 x float> undef, <4 x float> <float 1.0, float 2.0, float 3.0, float 4.0> , <4 x i32> <i32 0, i32 5, i32 undef, i32 6> ), float 4.0, i32 3), float 5.0, i32 1
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ret <4 x float> %ins1
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}
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