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| // 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 dereferenceable({{[0-9]+}}) [[A]]* @_ZNV5test01AaSERVKS0_([[A]]* [[IDX]], [[A]]* 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(); }
}
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