forked from OSchip/llvm-project
53 lines
2.0 KiB
LLVM
53 lines
2.0 KiB
LLVM
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; RUN: opt < %s -argpromotion -S
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; PR17906
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; When we promote two arguments in a single function with different types,
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; before the fix, we used the same tag for the newly-created two loads.
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; This testing case makes sure that we correctly transfer the tbaa tags from the
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; original loads to the newly-created loads when promoting pointer arguments.
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@a = global i32* null, align 8
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@e = global i32** @a, align 8
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@g = global i32 0, align 4
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@c = global i64 0, align 8
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@d = global i8 0, align 1
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define internal fastcc void @fn(i32* nocapture readonly %p1, i64* nocapture readonly %p2) {
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entry:
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%0 = load i64* %p2, align 8, !tbaa !1
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%conv = trunc i64 %0 to i32
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%1 = load i32* %p1, align 4, !tbaa !5
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%conv1 = trunc i32 %1 to i8
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store i8 %conv1, i8* @d, align 1, !tbaa !7
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ret void
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}
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define i32 @main() {
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entry:
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; CHECK-LABEL: main
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; CHECK: store i32 1, i32* %{{.*}}, align 4, !tbaa ![[I32:[0-9]+]]
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; CHECK: %g.val = load i32* @g, align 4, !tbaa ![[I32]]
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; CHECK: %c.val = load i64* @c, align 8, !tbaa ![[LONG:[0-9]+]]
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%0 = load i32*** @e, align 8, !tbaa !8
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store i32* @g, i32** %0, align 8, !tbaa !8
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%1 = load i32** @a, align 8, !tbaa !8
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store i32 1, i32* %1, align 4, !tbaa !5
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call fastcc void @fn(i32* @g, i64* @c)
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ret i32 0
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}
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!1 = metadata !{metadata !2, metadata !2, i64 0}
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!2 = metadata !{metadata !"long", metadata !3, i64 0}
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!3 = metadata !{metadata !"omnipotent char", metadata !4, i64 0}
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!4 = metadata !{metadata !"Simple C/C++ TBAA"}
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!5 = metadata !{metadata !6, metadata !6, i64 0}
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!6 = metadata !{metadata !"int", metadata !3, i64 0}
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!7 = metadata !{metadata !3, metadata !3, i64 0}
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!8 = metadata !{metadata !9, metadata !9, i64 0}
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!9 = metadata !{metadata !"any pointer", metadata !3, i64 0}
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; CHECK: ![[I32]] = metadata !{metadata ![[I32_TYPE:[0-9]+]], metadata ![[I32_TYPE]], i64 0}
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; CHECK: ![[I32_TYPE]] = metadata !{metadata !"int", metadata !{{.*}}, i64 0}
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; CHECK: ![[LONG]] = metadata !{metadata ![[LONG_TYPE:[0-9]+]], metadata ![[LONG_TYPE]], i64 0}
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; CHECK: ![[LONG_TYPE]] = metadata !{metadata !"long", metadata !{{.*}}, i64 0}
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