29 lines
1.0 KiB
C++
29 lines
1.0 KiB
C++
// RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s \
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// RUN: -emit-llvm -o - | FileCheck %s -check-prefixes=CHECK,OLD-PATH
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// RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s \
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// RUN: -emit-llvm -new-struct-path-tbaa -o - | FileCheck %s -check-prefixes=CHECK,NEW-PATH
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//
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// Check that we generate correct TBAA information for lvalues constructed
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// with use of casts.
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struct V {
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unsigned n;
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};
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struct S {
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char bytes[4];
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};
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void foo(S *p) {
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// CHECK-LABEL: _Z3fooP1S
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// CHECK: store i32 5, {{.*}}, !tbaa [[TAG_V_n:!.*]]
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((V*)p->bytes)->n = 5;
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}
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// OLD-PATH-DAG: [[TAG_V_n]] = !{[[TYPE_V:!.*]], [[TYPE_int:!.*]], i64 0}
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// OLD-PATH-DAG: [[TYPE_V]] = !{!"_ZTS1V", !{{.*}}, i64 0}
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// OLD-PATH-DAG: [[TYPE_int]] = !{!"int", !{{.*}}, i64 0}
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// NEW-PATH-DAG: [[TAG_V_n]] = !{[[TYPE_V:!.*]], [[TYPE_int:!.*]], i64 0, i64 4}
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// NEW-PATH-DAG: [[TYPE_V]] = !{[[TYPE_char:!.*]], i64 4, !"_ZTS1V", [[TYPE_int]], i64 0, i64 4}
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// NEW-PATH-DAG: [[TYPE_int]] = !{[[TYPE_char]], i64 4, !"int"}
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