forked from OSchip/llvm-project
53 lines
1.9 KiB
C++
53 lines
1.9 KiB
C++
// RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s \
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// RUN: -emit-llvm -o - | FileCheck %s
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// RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s \
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// RUN: -new-struct-path-tbaa -emit-llvm -o - | \
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// RUN: FileCheck -check-prefix=CHECK-NEW %s
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//
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// Check that we generate correct TBAA information for accesses to array
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// elements.
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struct A { int i; };
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struct B { A a[1]; };
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struct C { int i; int x[3]; };
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int foo(B *b) {
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// CHECK-LABEL: _Z3fooP1B
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// CHECK: load i32, {{.*}}, !tbaa [[TAG_A_i:!.*]]
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// CHECK-NEW-LABEL: _Z3fooP1B
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// CHECK-NEW: load i32, {{.*}}, !tbaa [[TAG_A_i:!.*]]
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return b->a->i;
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}
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// Check that members of array types are represented correctly.
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int bar(C *c) {
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// CHECK-NEW-LABEL: _Z3barP1C
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// CHECK-NEW: load i32, {{.*}}, !tbaa [[TAG_C_i:!.*]]
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return c->i;
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}
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int bar2(C *c) {
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// CHECK-NEW-LABEL: _Z4bar2P1C
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// CHECK-NEW: load i32, {{.*}}, !tbaa [[TAG_int:!.*]]
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return c->x[2];
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}
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int bar3(C *c, int j) {
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// CHECK-NEW-LABEL: _Z4bar3P1Ci
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// CHECK-NEW: load i32, {{.*}}, !tbaa [[TAG_int:!.*]]
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return c->x[j];
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}
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// CHECK-DAG: [[TAG_A_i]] = !{[[TYPE_A:!.*]], [[TYPE_int:!.*]], i64 0}
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// CHECK-DAG: [[TYPE_A]] = !{!"_ZTS1A", !{{.*}}, i64 0}
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// CHECK-DAG: [[TYPE_int]] = !{!"int", !{{.*}}, i64 0}
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// CHECK-NEW-DAG: [[TYPE_char:!.*]] = !{{{.*}}, i64 1, !"omnipotent char"}
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// CHECK-NEW-DAG: [[TYPE_int:!.*]] = !{[[TYPE_char]], i64 4, !"int"}
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// CHECK-NEW-DAG: [[TAG_int]] = !{[[TYPE_int]], [[TYPE_int]], i64 0, i64 4}
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// CHECK-NEW-DAG: [[TYPE_pointer:!.*]] = !{[[TYPE_char]], i64 8, !"any pointer"}
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// CHECK-NEW-DAG: [[TYPE_A:!.*]] = !{[[TYPE_char]], i64 4, !"_ZTS1A", [[TYPE_int]], i64 0, i64 4}
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// CHECK-NEW-DAG: [[TAG_A_i]] = !{[[TYPE_A]], [[TYPE_int]], i64 0, i64 4}
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// CHECK-NEW-DAG: [[TYPE_C:!.*]] = !{[[TYPE_char]], i64 16, !"_ZTS1C", [[TYPE_int]], i64 0, i64 4, [[TYPE_int]], i64 4, i64 12}
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// CHECK-NEW-DAG: [[TAG_C_i]] = !{[[TYPE_C:!.*]], [[TYPE_int:!.*]], i64 0, i64 4}
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