forked from OSchip/llvm-project
30 lines
900 B
C++
30 lines
900 B
C++
// RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s -emit-llvm -o - | FileCheck %s
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//
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// Check that we generate correct TBAA information for reference accesses.
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struct S;
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struct B {
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S &s;
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B(S &s) : s(s) {}
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void bar();
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};
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void foo(S &s) {
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B b(s);
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b.bar();
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}
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// CHECK-LABEL: _Z3fooR1S
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// Check initialization of the reference parameter in foo().
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// CHECK: store %struct.S* {{.*}}, %struct.S** {{.*}}, !tbaa [[TAG_pointer:!.*]]
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//
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// CHECK-LABEL: _ZN1BC2ER1S
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// TODO: Check loading of the reference parameter in B::B(S&).
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// Check initialization of B::s in B::B(S&).
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// CHECK: store %struct.S* {{.*}}, %struct.S** {{.*}}, !tbaa [[TAG_pointer]]
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//
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// CHECK-DAG: [[TAG_pointer]] = !{[[TYPE_pointer:!.*]], [[TYPE_pointer]], i64 0}
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// CHECK-DAG: [[TYPE_pointer]] = !{!"any pointer", [[TYPE_char:!.*]], i64 0}
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// CHECK-DAG: [[TYPE_char]] = !{!"omnipotent char", {{!.*}}, i64 0}
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