xref: /aosp_15_r20/external/clang/test/CodeGenCXX/vararg-non-pod-ms-compat.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // RUN: %clang_cc1 -Wno-error=non-pod-varargs -triple i686-pc-win32 -fms-compatibility -emit-llvm -o - %s | FileCheck %s -check-prefix=X86 -check-prefix=CHECK
2*67e74705SXin Li // RUN: %clang_cc1 -Wno-error=non-pod-varargs -triple x86_64-pc-win32 -fms-compatibility -emit-llvm -o - %s | FileCheck %s -check-prefix=X64 -check-prefix=CHECK
3*67e74705SXin Li 
4*67e74705SXin Li struct X {
5*67e74705SXin Li   X();
6*67e74705SXin Li   ~X();
7*67e74705SXin Li   int data;
8*67e74705SXin Li };
9*67e74705SXin Li 
10*67e74705SXin Li void vararg(...);
11*67e74705SXin Li 
test(X x)12*67e74705SXin Li void test(X x) {
13*67e74705SXin Li   // CHECK-LABEL: define void @"\01?test@@YAXUX@@@Z"
14*67e74705SXin Li 
15*67e74705SXin Li   // X86: %[[argmem:[^ ]*]] = alloca inalloca <{ %struct.X }>
16*67e74705SXin Li   // X86: call void (<{ %struct.X }>*, ...) bitcast (void (...)* @"\01?vararg@@YAXZZ" to void (<{ %struct.X }>*, ...)*)(<{ %struct.X }>* inalloca %[[argmem]])
17*67e74705SXin Li 
18*67e74705SXin Li   // X64: alloca %struct.X
19*67e74705SXin Li 
20*67e74705SXin Li   // X64: %[[agg:[^ ]*]] = alloca %struct.X
21*67e74705SXin Li   // X64: %[[valptr:[^ ]*]] = getelementptr inbounds %struct.X, %struct.X* %[[agg]], i32 0, i32 0
22*67e74705SXin Li   // X64: %[[val:[^ ]*]] = load i32, i32* %[[valptr]]
23*67e74705SXin Li   // X64: call void (...) @"\01?vararg@@YAXZZ"(i32 %[[val]])
24*67e74705SXin Li 
25*67e74705SXin Li   // CHECK-NOT: llvm.trap
26*67e74705SXin Li   vararg(x);
27*67e74705SXin Li   // CHECK: ret void
28*67e74705SXin Li }
29