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1 // RUN: %clang_cc1 -triple arm64-apple-ios7.0 -fsyntax-only -verify %s
2 
3 struct Simple {
4   char a, b;
5 };
6 
test_ldrex(char * addr)7 int test_ldrex(char *addr) {
8   int sum = 0;
9   sum += __builtin_arm_ldrex(addr);
10   sum += __builtin_arm_ldrex((short *)addr);
11   sum += __builtin_arm_ldrex((int *)addr);
12   sum += __builtin_arm_ldrex((long long *)addr);
13   sum += __builtin_arm_ldrex((__int128 *)addr);
14   sum += __builtin_arm_ldrex((float *)addr);
15   sum += __builtin_arm_ldrex((double *)addr);
16   sum += *__builtin_arm_ldrex((int **)addr);
17   sum += __builtin_arm_ldrex((struct Simple **)addr)->a;
18   sum += __builtin_arm_ldrex((volatile char *)addr);
19   sum += __builtin_arm_ldrex((const volatile char *)addr);
20 
21   // In principle this might be valid, but stick to ints and floats for scalar
22   // types at the moment.
23   sum += __builtin_arm_ldrex((struct Simple *)addr).a; // expected-error {{address argument to atomic builtin must be a pointer to}}
24 
25   __builtin_arm_ldrex(); // expected-error {{too few arguments to function call}}
26   __builtin_arm_ldrex(1, 2); // expected-error {{too many arguments to function call}}
27   return sum;
28 }
29 
test_strex(char * addr)30 int test_strex(char *addr) {
31   int res = 0;
32   struct Simple var = {0};
33   res |= __builtin_arm_strex(4, addr);
34   res |= __builtin_arm_strex(42, (short *)addr);
35   res |= __builtin_arm_strex(42, (int *)addr);
36   res |= __builtin_arm_strex(42, (long long *)addr);
37   res |= __builtin_arm_strex(42, (__int128 *)addr);
38   res |= __builtin_arm_strex(2.71828f, (float *)addr);
39   res |= __builtin_arm_strex(3.14159, (double *)addr);
40   res |= __builtin_arm_strex(&var, (struct Simple **)addr);
41 
42   res |= __builtin_arm_strex(42, (volatile char *)addr);
43   res |= __builtin_arm_strex(42, (char *const)addr);
44   res |= __builtin_arm_strex(42, (const char *)addr); // expected-warning {{passing 'const char *' to parameter of type 'volatile char *' discards qualifiers}}
45 
46 
47   res |= __builtin_arm_strex(var, (struct Simple *)addr); // expected-error {{address argument to atomic builtin must be a pointer to}}
48   res |= __builtin_arm_strex(var, (struct Simple **)addr); // expected-error {{passing 'struct Simple' to parameter of incompatible type 'struct Simple *'}}
49   res |= __builtin_arm_strex(&var, (struct Simple **)addr).a; // expected-error {{is not a structure or union}}
50 
51   __builtin_arm_strex(1); // expected-error {{too few arguments to function call}}
52   __builtin_arm_strex(1, 2, 3); // expected-error {{too many arguments to function call}}
53   return res;
54 }
55 
test_ldaex(char * addr)56 int test_ldaex(char *addr) {
57   int sum = 0;
58   sum += __builtin_arm_ldaex(addr);
59   sum += __builtin_arm_ldaex((short *)addr);
60   sum += __builtin_arm_ldaex((int *)addr);
61   sum += __builtin_arm_ldaex((long long *)addr);
62   sum += __builtin_arm_ldaex((__int128 *)addr);
63   sum += __builtin_arm_ldaex((float *)addr);
64   sum += __builtin_arm_ldaex((double *)addr);
65   sum += *__builtin_arm_ldaex((int **)addr);
66   sum += __builtin_arm_ldaex((struct Simple **)addr)->a;
67   sum += __builtin_arm_ldaex((volatile char *)addr);
68   sum += __builtin_arm_ldaex((const volatile char *)addr);
69 
70   // In principle this might be valid, but stick to ints and floats for scalar
71   // types at the moment.
72   sum += __builtin_arm_ldaex((struct Simple *)addr).a; // expected-error {{address argument to atomic builtin must be a pointer to}}
73 
74   __builtin_arm_ldaex(); // expected-error {{too few arguments to function call}}
75   __builtin_arm_ldaex(1, 2); // expected-error {{too many arguments to function call}}
76   return sum;
77 }
78 
test_stlex(char * addr)79 int test_stlex(char *addr) {
80   int res = 0;
81   struct Simple var = {0};
82   res |= __builtin_arm_stlex(4, addr);
83   res |= __builtin_arm_stlex(42, (short *)addr);
84   res |= __builtin_arm_stlex(42, (int *)addr);
85   res |= __builtin_arm_stlex(42, (long long *)addr);
86   res |= __builtin_arm_stlex(42, (__int128 *)addr);
87   res |= __builtin_arm_stlex(2.71828f, (float *)addr);
88   res |= __builtin_arm_stlex(3.14159, (double *)addr);
89   res |= __builtin_arm_stlex(&var, (struct Simple **)addr);
90 
91   res |= __builtin_arm_stlex(42, (volatile char *)addr);
92   res |= __builtin_arm_stlex(42, (char *const)addr);
93   res |= __builtin_arm_stlex(42, (const char *)addr); // expected-warning {{passing 'const char *' to parameter of type 'volatile char *' discards qualifiers}}
94 
95 
96   res |= __builtin_arm_stlex(var, (struct Simple *)addr); // expected-error {{address argument to atomic builtin must be a pointer to}}
97   res |= __builtin_arm_stlex(var, (struct Simple **)addr); // expected-error {{passing 'struct Simple' to parameter of incompatible type 'struct Simple *'}}
98   res |= __builtin_arm_stlex(&var, (struct Simple **)addr).a; // expected-error {{is not a structure or union}}
99 
100   __builtin_arm_stlex(1); // expected-error {{too few arguments to function call}}
101   __builtin_arm_stlex(1, 2, 3); // expected-error {{too many arguments to function call}}
102   return res;
103 }
104 
test_clrex()105 void test_clrex() {
106   __builtin_arm_clrex();
107   __builtin_arm_clrex(1); // expected-error {{too many arguments to function call}}
108 }
109