1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm %s -o - | FileCheck %s 2 3 // PR4678 4 namespace test0 { 5 // test1 should be compmiled to be a varargs function in the IR even 6 // though there is no way to do a va_begin. Otherwise, the optimizer 7 // will warn about 'dropped arguments' at the call site. 8 9 // CHECK-LABEL: define{{.*}} i32 @_ZN5test05test1Ez(...) test1(...)10 int test1(...) { 11 return -1; 12 } 13 14 // CHECK: call noundef i32 (...) @_ZN5test05test1Ez(i32 noundef 0) test()15 void test() { 16 test1(0); 17 } 18 } 19 20 namespace test1 { 21 struct A { 22 int x; 23 int y; 24 }; 25 26 void foo(...); 27 test()28 void test() { 29 A x; 30 foo(x); 31 } 32 // CHECK-LABEL: define{{.*}} void @_ZN5test14testEv() 33 // CHECK: [[X:%.*]] = alloca [[A:%.*]], align 4 34 // CHECK-NEXT: [[TMP:%.*]] = alloca [[A]], align 4 35 // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 [[TMP]], ptr align 4 [[X]], i64 8, i1 false) 36 // CHECK-NEXT: [[T1:%.*]] = load i64, ptr [[TMP]], align 4 37 // CHECK-NEXT: call void (...) @_ZN5test13fooEz(i64 [[T1]]) 38 // CHECK-NEXT: ret void 39 } 40