49 lines
1.5 KiB
LLVM
49 lines
1.5 KiB
LLVM
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; RUN: opt -mtriple=x86_64-unknown-linux-gnu -load-store-vectorizer -S < %s | \
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; RUN: FileCheck %s
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; RUN: opt -mtriple=x86_64-unknown-linux-gnu -aa-pipeline=basic-aa -passes='function(load-store-vectorizer)' -S < %s | \
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; RUN: FileCheck %s
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;
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; The GPU Load & Store Vectorizer may merge differently-typed accesses into a
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; single instruction. This test checks that we merge TBAA tags for such
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; accesses correctly.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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; struct S {
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; float f;
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; int i;
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; };
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%struct.S = type { float, i32 }
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; float foo(S *p) {
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; p->f -= 1;
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; p->i -= 1;
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; return p->f;
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; }
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define float @foo(%struct.S* %p) {
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entry:
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; CHECK-LABEL: foo
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; CHECK: load <2 x i32>, {{.*}}, !tbaa [[TAG_char:!.*]]
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; CHECK: store <2 x i32> {{.*}}, !tbaa [[TAG_char]]
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%f = getelementptr inbounds %struct.S, %struct.S* %p, i64 0, i32 0
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%0 = load float, float* %f, align 4, !tbaa !2
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%sub = fadd float %0, -1.000000e+00
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store float %sub, float* %f, align 4, !tbaa !2
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%i = getelementptr inbounds %struct.S, %struct.S* %p, i64 0, i32 1
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%1 = load i32, i32* %i, align 4, !tbaa !8
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%sub1 = add nsw i32 %1, -1
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store i32 %sub1, i32* %i, align 4, !tbaa !8
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ret float %sub
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}
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!2 = !{!3, !4, i64 0}
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!3 = !{!"_ZTS1S", !4, i64 0, !7, i64 4}
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!4 = !{!"float", !5, i64 0}
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!5 = !{!"omnipotent char", !6, i64 0}
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!6 = !{!"Simple C++ TBAA"}
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!7 = !{!"int", !5, i64 0}
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!8 = !{!3, !7, i64 4}
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; CHECK-DAG: [[TYPE_char:!.*]] = !{!"omnipotent char", {{.*}}, i64 0}
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; CHECK-DAG: [[TAG_char]] = !{[[TYPE_char]], [[TYPE_char]], i64 0}
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