diff options
Diffstat (limited to 'clang/test/CodeGenCXX/constructor-init.cpp')
| -rw-r--r-- | clang/test/CodeGenCXX/constructor-init.cpp | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/constructor-init.cpp b/clang/test/CodeGenCXX/constructor-init.cpp index 284b8b5938f..d610fd5ad86 100644 --- a/clang/test/CodeGenCXX/constructor-init.cpp +++ b/clang/test/CodeGenCXX/constructor-init.cpp @@ -81,6 +81,38 @@ void f() { // CHECK: ret void } +// Make sure we initialize the vtable pointer if it's required by a +// base initializer. +namespace InitVTable { + struct A { A(int); }; + struct B : A { + virtual int foo(); + B(); + B(int); + }; + + // CHECK: define void @_ZN10InitVTable1BC2Ev( + // CHECK: [[T0:%.*]] = bitcast [[B:%.*]]* [[THIS:%.*]] to i8*** + // CHECK-NEXT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2), i8*** [[T0]] + // CHECK: [[VTBL:%.*]] = load i32 ([[B]]*)*** {{%.*}} + // CHECK-NEXT: [[FNP:%.*]] = getelementptr inbounds i32 ([[B]]*)** [[VTBL]], i64 0 + // CHECK-NEXT: [[FN:%.*]] = load i32 ([[B]]*)** [[FNP]] + // CHECK-NEXT: [[ARG:%.*]] = call i32 [[FN]]([[B]]* [[THIS]]) + // CHECK-NEXT: call void @_ZN10InitVTable1AC2Ei({{.*}}* %1, i32 [[ARG]]) + // CHECK-NEXT: [[T0:%.*]] = bitcast [[B]]* [[THIS]] to i8*** + // CHECK-NEXT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2), i8*** [[T0]] + // CHECK-NEXT: ret void + B::B() : A(foo()) {} + + // CHECK: define void @_ZN10InitVTable1BC2Ei( + // CHECK: [[ARG:%.*]] = add nsw i32 {{%.*}}, 5 + // CHECK-NEXT: call void @_ZN10InitVTable1AC2Ei({{.*}}* {{%.*}}, i32 [[ARG]]) + // CHECK-NEXT: [[T0:%.*]] = bitcast [[B]]* {{%.*}} to i8*** + // CHECK-NEXT: store i8** getelementptr inbounds ([3 x i8*]* @_ZTVN10InitVTable1BE, i64 0, i64 2), i8*** [[T0]] + // CHECK-NEXT: ret void + B::B(int x) : A(x + 5) {} +} + template<typename T> struct X { X(const X &); |
