| 1 | // RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s -emit-llvm -o - | FileCheck %s -check-prefixes=CHECK,OLD-PATH |
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| 2 | // RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s -emit-llvm -new-struct-path-tbaa -o - | FileCheck %s -check-prefixes=CHECK,NEW-PATH |
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| 3 | // |
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| 4 | // Check that we generate correct TBAA information for reference accesses. |
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| 5 | |
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| 6 | struct S; |
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| 7 | |
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| 8 | struct B { |
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| 9 | S &s; |
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| 10 | B(S &s); |
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| 11 | S &get(); |
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| 12 | }; |
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| 13 | |
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| 14 | B::B(S &s) : s(s) { |
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| 15 | // CHECK-LABEL: _ZN1BC2ER1S |
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| 16 | // Check initialization of the reference parameter. |
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| 17 | // CHECK: store %struct.S* {{.*}}, %struct.S** {{.*}}, !tbaa [[TAG_pointer:!.*]] |
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| 18 | |
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| 19 | // Check loading of the reference parameter. |
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| 20 | // CHECK: load %struct.S*, %struct.S** {{.*}}, !tbaa [[TAG_pointer]] |
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| 21 | |
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| 22 | // Check initialization of the reference member. |
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| 23 | // CHECK: store %struct.S* {{.*}}, %struct.S** {{.*}}, !tbaa [[TAG_pointer]] |
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| 24 | } |
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| 25 | |
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| 26 | S &B::get() { |
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| 27 | // CHECK-LABEL: _ZN1B3getEv |
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| 28 | // Check that we access the reference as a structure member. |
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| 29 | // CHECK: load %struct.S*, %struct.S** {{.*}}, !tbaa [[TAG_B_s:!.*]] |
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| 30 | return s; |
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| 31 | } |
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| 32 | |
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| 33 | // OLD-PATH-DAG: [[TAG_pointer]] = !{[[TYPE_pointer:!.*]], [[TYPE_pointer]], i64 0} |
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| 34 | // OLD-PATH-DAG: [[TAG_B_s]] = !{[[TYPE_B:!.*]], [[TYPE_pointer]], i64 0} |
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| 35 | // |
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| 36 | // OLD-PATH-DAG: [[TYPE_B]] = !{!"_ZTS1B", [[TYPE_pointer]], i64 0} |
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| 37 | // OLD-PATH-DAG: [[TYPE_pointer]] = !{!"any pointer", [[TYPE_char:!.*]], i64 0} |
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| 38 | // OLD-PATH-DAG: [[TYPE_char]] = !{!"omnipotent char", {{!.*}}, i64 0} |
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| 39 | |
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| 40 | // NEW-PATH-DAG: [[TAG_pointer]] = !{[[TYPE_pointer:!.*]], [[TYPE_pointer]], i64 0, i64 8} |
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| 41 | // NEW-PATH-DAG: [[TAG_B_s]] = !{[[TYPE_B:!.*]], [[TYPE_pointer]], i64 0, i64 8} |
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| 42 | // |
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| 43 | // NEW-PATH-DAG: [[TYPE_B]] = !{[[TYPE_char:!.*]], i64 8, !"_ZTS1B", [[TYPE_pointer]], i64 0, i64 8} |
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| 44 | // NEW-PATH-DAG: [[TYPE_pointer]] = !{[[TYPE_char:!.*]], i64 8, !"any pointer"} |
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| 45 | // NEW-PATH-DAG: [[TYPE_char]] = !{{{!.*}}, i64 1, !"omnipotent char"} |
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| 46 | |
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