John McCall | a8f28da | 2010-08-25 02:50:31 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s |
| 2 | |
| 3 | // Check that IR gen doesn't try to do an lvalue-to-rvalue conversion |
| 4 | // on a volatile reference result. rdar://problem/8338198 |
| 5 | namespace test0 { |
| 6 | struct A { |
| 7 | A(const A& t); |
| 8 | A& operator=(const A& t); |
| 9 | volatile A& operator=(const volatile A& t) volatile; |
| 10 | }; |
| 11 | |
| 12 | volatile A *array; |
| 13 | |
| 14 | // CHECK: define void @_ZN5test04testENS_1AE( |
| 15 | void test(A t) { |
| 16 | // CHECK: [[ARR:%.*]] = load [[A:%.*]]** @_ZN5test05arrayE, align 8 |
| 17 | // CHECK-NEXT: [[IDX:%.*]] = getelementptr inbounds [[A]]* [[ARR]], i64 0 |
| 18 | // CHECK-NEXT: [[TMP:%.*]] = call [[A]]* @_ZNV5test01AaSERVKS0_([[A]]* [[IDX]], [[A]]* [[T:%.*]]) |
| 19 | // CHECK-NEXT: ret void |
| 20 | array[0] = t; |
| 21 | } |
| 22 | } |
| 23 | |
| 24 | namespace test1 { |
| 25 | volatile int *x; |
| 26 | |
| 27 | // CHECK: define void @_ZN5test14testEv() |
| 28 | void test() { |
| 29 | // CHECK: [[TMP:%.*]] = load i32** @_ZN5test11xE, align 8 |
John McCall | a8f28da | 2010-08-25 02:50:31 +0000 | [diff] [blame] | 30 | // CHECK-NEXT: ret void |
| 31 | *x; |
| 32 | } |
| 33 | } |