1// RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm -o - %s | FileCheck %s
2
3// CHECK: @foo
4
5// Make sure we mangle overloadable, even in C system headers.
6# 1 "somesystemheader.h" 1 3 4
7// CHECK: @_Z2f0i
8void __attribute__((__overloadable__)) f0(int a) {}
9// CHECK: @_Z2f0l
10void __attribute__((__overloadable__)) f0(long b) {}
11
12// CHECK: @bar
13
14// These should get merged.
15void foo() __asm__("bar");
16void foo2() __asm__("bar");
17
18int nux __asm__("foo");
19extern float nux2 __asm__("foo");
20
21int test() {
22  foo();
23  foo2();
24
25  return nux + nux2;
26}
27
28
29// Function becomes a variable.
30void foo3() __asm__("var");
31
32void test2() {
33  foo3();
34}
35int foo4 __asm__("var") = 4;
36
37
38// Variable becomes a function
39extern int foo5 __asm__("var2");
40
41void test3() {
42  foo5 = 1;
43}
44
45void foo6() __asm__("var2");
46void foo6() {
47}
48
49
50
51int foo7 __asm__("foo7") __attribute__((used));
52float foo8 __asm__("foo7") = 42;
53
54// PR4412
55int func(void);
56extern int func (void) __asm__ ("FUNC");
57
58// CHECK: @FUNC
59int func(void) {
60  return 42;
61}
62
63// CHECK: @_Z4foo9Dv4_f
64typedef __attribute__(( vector_size(16) )) float float4;
65void __attribute__((__overloadable__)) foo9(float4 f) {}
66
67// Intrinsic calls.
68extern int llvm_cas(volatile int*, int, int)
69  __asm__("llvm.atomic.cmp.swap.i32.p0i32");
70
71int foo10(volatile int* add, int from, int to) {
72  // CHECK: call i32 @llvm.atomic.cmp.swap.i32.p0i32
73  return llvm_cas(add, from, to);
74}
75