derek.holloway
7502bf64a4
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59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
// RUN: %clang_cc1 -triple x86_64-linux-gnu -O1 %s -emit-llvm -o - | FileCheck %s -check-prefixes=CHECK,OLD-PATH
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -O1 %s -emit-llvm -new-struct-path-tbaa -o - | FileCheck %s -check-prefixes=CHECK,NEW-PATH
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//
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// Test generating of TBAA metadata for accesses to members of base classes.
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struct A {
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int x, y, z;
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};
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struct B : A {
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int i;
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};
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struct C {
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int i;
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B b;
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int j;
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};
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int f1(B *b) {
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// CHECK-LABEL: _Z2f1P1B
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// CHECK: load i32, {{.*}}, !tbaa [[TAG_A_y:!.*]]
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return b->y;
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}
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int f2(C *c) {
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// CHECK-LABEL: _Z2f2P1C
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// CHECK: load i32, {{.*}}, !tbaa [[TAG_A_y]]
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return (&(c->b))->y;
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}
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struct D : virtual A
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{};
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struct E {
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D d;
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};
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int f3(D *d) {
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// CHECK-LABEL: _Z2f3P1D
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// CHECK: load i32, {{.*}}, !tbaa [[TAG_A_y]]
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return d->y;
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}
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int f4(E *e) {
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// CHECK-LABEL: _Z2f4P1E
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// CHECK: load i32, {{.*}}, !tbaa [[TAG_A_y]]
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return (&(e->d))->y;
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}
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// OLD-PATH-DAG: [[TYPE_char:!.*]] = !{!"omnipotent char", {{.*}}, i64 0}
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// OLD-PATH-DAG: [[TYPE_int:!.*]] = !{!"int", [[TYPE_char]], i64 0}
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// OLD-PATH-DAG: [[TYPE_A:!.*]] = !{!"_ZTS1A", [[TYPE_int]], i64 0, [[TYPE_int]], i64 4, [[TYPE_int]], i64 8}
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// OLD-PATH-DAG: [[TAG_A_y]] = !{[[TYPE_A]], [[TYPE_int]], i64 4}
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// NEW-PATH-DAG: [[TYPE_char:!.*]] = !{{{.*}}, i64 1, !"omnipotent char"}
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// NEW-PATH-DAG: [[TYPE_int:!.*]] = !{[[TYPE_char]], i64 4, !"int"}
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// NEW-PATH-DAG: [[TYPE_A:!.*]] = !{[[TYPE_char]], i64 12, !"_ZTS1A", [[TYPE_int]], i64 0, i64 4, [[TYPE_int]], i64 4, i64 4, [[TYPE_int]], i64 8, i64 4}
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// NEW-PATH-DAG: [[TAG_A_y]] = !{[[TYPE_A]], [[TYPE_int]], i64 4, i64 4}
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