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1ca1fcaa5b
This patch is what was the "instcombine" portion of D14185, with an additional test added (see julia_pseudovec in test/Transforms/InstCombine/insert-val-extract-elem.ll). The patch causes instcombine to replace sequences of extractelement-insertvalue-store that act essentially like a bitcast followed by a store. Differential review: http://reviews.llvm.org/D14260 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267482 91177308-0d34-0410-b5e6-96231b3b80d8
75 lines
2.4 KiB
LLVM
75 lines
2.4 KiB
LLVM
; RUN: opt -S -instcombine %s | FileCheck %s
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; CHECK-LABEL: julia_2xdouble
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; CHECK-NOT: insertvalue
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; CHECK-NOT: extractelement
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; CHECK: store <2 x double>
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define void @julia_2xdouble([2 x double]* sret, <2 x double>*) {
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top:
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%x = load <2 x double>, <2 x double>* %1
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%x0 = extractelement <2 x double> %x, i32 0
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%i0 = insertvalue [2 x double] undef, double %x0, 0
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%x1 = extractelement <2 x double> %x, i32 1
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%i1 = insertvalue [2 x double] %i0, double %x1, 1
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store [2 x double] %i1, [2 x double]* %0, align 4
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ret void
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}
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; Test with two inserts to the same index
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; CHECK-LABEL: julia_2xi64
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; CHECK-NOT: insertvalue
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; CHECK-NOT: extractelement
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; CHECK: store <2 x i64>
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define void @julia_2xi64([2 x i64]* sret, <2 x i64>*) {
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top:
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%x = load <2 x i64>, <2 x i64>* %1
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%x0 = extractelement <2 x i64> %x, i32 1
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%i0 = insertvalue [2 x i64] undef, i64 %x0, 0
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%x1 = extractelement <2 x i64> %x, i32 1
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%i1 = insertvalue [2 x i64] %i0, i64 %x1, 1
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%x2 = extractelement <2 x i64> %x, i32 0
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%i2 = insertvalue [2 x i64] %i1, i64 %x2, 0
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store [2 x i64] %i2, [2 x i64]* %0, align 4
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ret void
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}
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; CHECK-LABEL: julia_4xfloat
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; CHECK-NOT: insertvalue
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; CHECK-NOT: extractelement
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; CHECK: store <4 x float>
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define void @julia_4xfloat([4 x float]* sret, <4 x float>*) {
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top:
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%x = load <4 x float>, <4 x float>* %1
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%x0 = extractelement <4 x float> %x, i32 0
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%i0 = insertvalue [4 x float] undef, float %x0, 0
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%x1 = extractelement <4 x float> %x, i32 1
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%i1 = insertvalue [4 x float] %i0, float %x1, 1
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%x2 = extractelement <4 x float> %x, i32 2
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%i2 = insertvalue [4 x float] %i1, float %x2, 2
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%x3 = extractelement <4 x float> %x, i32 3
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%i3 = insertvalue [4 x float] %i2, float %x3, 3
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store [4 x float] %i3, [4 x float]* %0, align 4
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ret void
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}
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%pseudovec = type { float, float, float, float }
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; CHECK-LABEL: julia_pseudovec
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; CHECK-NOT: insertvalue
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; CHECK-NOT: extractelement
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; CHECK: store <4 x float>
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define void @julia_pseudovec(%pseudovec* sret, <4 x float>*) {
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top:
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%x = load <4 x float>, <4 x float>* %1
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%x0 = extractelement <4 x float> %x, i32 0
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%i0 = insertvalue %pseudovec undef, float %x0, 0
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%x1 = extractelement <4 x float> %x, i32 1
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%i1 = insertvalue %pseudovec %i0, float %x1, 1
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%x2 = extractelement <4 x float> %x, i32 2
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%i2 = insertvalue %pseudovec %i1, float %x2, 2
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%x3 = extractelement <4 x float> %x, i32 3
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%i3 = insertvalue %pseudovec %i2, float %x3, 3
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store %pseudovec %i3, %pseudovec* %0, align 4
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ret void
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}
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