e0ac46e69d
This reverts commit d618f1c3b1.
This commit wasn't reviewed ahead of time and significant concerns were
raised immediately after it landed. According to our developer policy
this warrants immediate revert of the commit.
https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy
Differential Revision: https://reviews.llvm.org/D155509
52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
// 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 ptr, ptr @_ZN5test05arrayE, align 8
|
|
// CHECK-NEXT: [[IDX:%.*]] = getelementptr inbounds [[A:%.*]], ptr [[ARR]], i64 0
|
|
// CHECK-NEXT: [[TMP:%.*]] = call noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @_ZNV5test01AaSERVKS0_(ptr {{[^,]*}} [[IDX]], ptr noundef 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 ptr, ptr @_ZN5test11xE, align 8
|
|
// CHECK11-NEXT: {{%.*}} = load volatile i32, ptr [[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(); }
|
|
}
|