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// RUN: %clang_cc1 -emit-llvm -triple x86_64-pc-linux-gnu %s -o - -std=c++11 | FileCheck %s
volatile int g1;
struct S {
volatile int a;
} g2;
volatile int& refcall();
// CHECK: define{{.*}} void @_Z2f1PViPV1S
void f1(volatile int *x, volatile S* s) {
// We should perform the load in these cases.
// CHECK: load volatile i32, ptr
(*x);
// CHECK: load volatile i32, ptr
__extension__ g1;
// CHECK: load volatile i32, ptr
s->a;
// CHECK: load volatile i32, ptr
g2.a;
// CHECK: load volatile i32, ptr
s->*(&S::a);
// CHECK: load volatile i32, ptr
// CHECK: load volatile i32, ptr
x[0], 1 ? x[0] : *x;
// CHECK: load volatile i32, ptr
// CHECK: load volatile i32, ptr
// CHECK: load volatile i32, ptr
*x ?: *x;
// CHECK: load volatile i32, ptr
({ *x; });
// CHECK-NOT: load volatile
// CHECK: ret
}
// CHECK: define{{.*}} void @_Z2f2PVi
// CHECK-NOT: load volatile
// CHECK: ret
void f2(volatile int *x) {
// We shouldn't perform the load in these cases.
refcall();
1 ? refcall() : *x;
}
// CHECK: define{{.*}} void @_Z2f3v()
// CHECK-NOT: load
// CHECK-NOT: memcpy
void f3(void) {
volatile char a[10];
a;
}
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