1 // RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm -o - %s | FileCheck %s
2 // RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm -o - %s -O1 | FileCheck %s --check-prefix=O1
3 // RUN: %clang_cc1 -triple %ms_abi_triple -emit-llvm -o - %s | FileCheck %s
4 // RUN: %clang_cc1 -triple %ms_abi_triple -emit-llvm -o - %s -O1 | FileCheck %s --check-prefix=O1
5 
6 // Check that GlobalOpt can eliminate static constructors for simple implicit
7 // constructors. This is a targetted integration test to make sure that LLVM's
8 // optimizers are able to process Clang's IR. GlobalOpt in particular is
9 // sensitive to the casts we emit.
10 
11 // CHECK: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }]
12 // CHECK: [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_ctor_globalopt.cpp, i8* null }]
13 
14 // CHECK-LABEL: define internal void @_GLOBAL__sub_I_ctor_globalopt.cpp()
15 // CHECK: call void @
16 // CHECK-NOT: call
17 
18 // O1: @llvm.global_ctors = appending global [0 x { i32, void ()*, i8* }] zeroinitializer
19 
20 struct A {
21   virtual void f();
22   int a;
23 };
24 struct B : virtual A {
25   virtual void g();
26   int b;
27 };
28 B b;
29