clang/test/CodeGenCXX/vararg-non-pod-ms-compat.cpp

   1 // 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 // 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
   4 struct X {
   5   X();
   6   ~X();
   7   int data;
   8 };
   9
  10 void vararg(...);
  11
  12 void test(X x) {
  13   // CHECK-LABEL: define dso_local void @"?test@@YAXUX@@@Z"
  14
  15   // X86: %[[argmem:[^ ]*]] = alloca inalloca <{ %struct.X }>
  16   // X86: call void (ptr, ...) @"?vararg@@YAXZZ"(ptr inalloca(<{ %struct.X }>) %[[argmem]])
  17
  18   // X64: alloca %struct.X
  19
  20   // X64: %[[agg:[^ ]*]] = alloca %struct.X
  21   // X64: %[[valptr:[^ ]*]] = getelementptr inbounds %struct.X, ptr %[[agg]], i32 0, i32 0
  22   // X64: %[[val:[^ ]*]] = load i32, ptr %[[valptr]]
  23   // X64: call void (...) @"?vararg@@YAXZZ"(i32 %[[val]])
  24
  25   // CHECK-NOT: llvm.trap
  26   vararg(x);
  27   // CHECK: ret void
  28 }