You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.7 KiB
52 lines
1.7 KiB
4 months ago
|
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -std=c++98 -o - | FileCheck -check-prefix=CHECK -check-prefix=CHECK98 %s
|
||
|
|
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -std=c++11 -o - | FileCheck -check-prefix=CHECK -check-prefix=CHECK11 %s
|
||
|
|
|
||
|
|
// Check that IR gen doesn't try to do an lvalue-to-rvalue conversion
|
||
|
|
// on a volatile reference result. rdar://problem/8338198
|
||
|
|
namespace test0 {
|
||
|
|
struct A {
|
||
|
|
A(const A& t);
|
||
|
|
A& operator=(const A& t);
|
||
|
|
volatile A& operator=(const volatile A& t) volatile;
|
||
|
|
};
|
||
|
|
|
||
|
|
volatile A *array;
|
||
|
|
|
||
|
|
// CHECK-LABEL: define void @_ZN5test04testENS_1AE(
|
||
|
|
void test(A t) {
|
||
|
|
// CHECK: [[ARR:%.*]] = load [[A:%.*]]*, [[A:%.*]]** @_ZN5test05arrayE, align 8
|
||
|
|
// CHECK-NEXT: [[IDX:%.*]] = getelementptr inbounds [[A]], [[A]]* [[ARR]], i64 0
|
||
|
|
// CHECK-NEXT: [[TMP:%.*]] = call nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) [[A]]* @_ZNV5test01AaSERVKS0_([[A]]* {{[^,]*}} [[IDX]], [[A]]* nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) [[T:%.*]])
|
||
|
|
// CHECK-NEXT: ret void
|
||
|
|
array[0] = t;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace test1 {
|
||
|
|
volatile int *x;
|
||
|
|
|
||
|
|
// CHECK-LABEL: define void @_ZN5test14testEv()
|
||
|
|
void test() {
|
||
|
|
// CHECK: [[TMP:%.*]] = load i32*, i32** @_ZN5test11xE, align 8
|
||
|
|
// CHECK11-NEXT: {{%.*}} = load volatile i32, i32* [[TMP]], align 4
|
||
|
|
// CHECK-NEXT: ret void
|
||
|
|
*x;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace PR40642 {
|
||
|
|
template <class T> struct S {
|
||
|
|
// CHECK-LABEL: define {{.*}} @_ZN7PR406421SIiE3fooEv(
|
||
|
|
void foo() {
|
||
|
|
// CHECK98-NOT: load volatile
|
||
|
|
// CHECK11: load volatile
|
||
|
|
if (true)
|
||
|
|
reinterpret_cast<const volatile unsigned char *>(m_ptr)[0];
|
||
|
|
// CHECK: }
|
||
|
|
}
|
||
|
|
int *m_ptr;
|
||
|
|
};
|
||
|
|
|
||
|
|
void f(S<int> *x) { x->foo(); }
|
||
|
|
}
|