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author | John McCall <rjmccall@apple.com> | 2010-03-30 23:58:03 +0000 |
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committer | John McCall <rjmccall@apple.com> | 2010-03-30 23:58:03 +0000 |
commit | 23cba801e11b03929c44f8cf54578305963a3476 (patch) | |
tree | 7a1edfa728d0b5e9f0a9732d0faaec43ad2aa242 /test/CodeGenCXX/member-expressions.cpp | |
parent | 658f679b63cf92204d707c5dfc1251ae8f3c0762 (diff) |
Introduce a new kind of derived-to-base cast which bypasses the need for
null checks, and make sure we elide null checks when accessing base class
members.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99963 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGenCXX/member-expressions.cpp')
-rw-r--r-- | test/CodeGenCXX/member-expressions.cpp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/test/CodeGenCXX/member-expressions.cpp b/test/CodeGenCXX/member-expressions.cpp index 720a9a70d0..d9fb3940b0 100644 --- a/test/CodeGenCXX/member-expressions.cpp +++ b/test/CodeGenCXX/member-expressions.cpp @@ -44,3 +44,43 @@ int f() { return A().foo(); } } + +namespace test4 { + struct A { + int x; + }; + struct B { + int x; + void foo(); + }; + struct C : A, B { + }; + + extern C *c_ptr; + + // CHECK: define i32 @_ZN5test44testEv() + int test() { + // CHECK: load {{.*}} @_ZN5test45c_ptrE + // CHECK-NEXT: bitcast + // CHECK-NEXT: getelementptr + // CHECK-NEXT: bitcast + // CHECK-NEXT: call void @_ZN5test41B3fooEv + c_ptr->B::foo(); + + // CHECK: load {{.*}} @_ZN5test45c_ptrE + // CHECK-NEXT: bitcast + // CHECK-NEXT: getelementptr + // CHECK-NEXT: bitcast + // CHECK-NEXT: getelementptr + // CHECK-NEXT: store i32 5 + c_ptr->B::x = 5; + + // CHECK: load {{.*}} @_ZN5test45c_ptrE + // CHECK-NEXT: bitcast + // CHECK-NEXT: getelementptr + // CHECK-NEXT: bitcast + // CHECK-NEXT: getelementptr + // CHECK-NEXT: load i32* + return c_ptr->B::x; + } +} |