1 // XFAIL: hexagon,sparc
2 // (due to not having native load atomic support)
3 // RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
4 // RUN: %clang_cc1 -triple mips-linux-gnu -emit-llvm %s -o - | FileCheck %s
5
foo(int x)6 void foo(int x)
7 {
8 _Atomic(int) i = 0;
9 _Atomic(short) j = 0;
10 // Check that multiply / divides on atomics produce a cmpxchg loop
11 i *= 2;
12 // CHECK: mul nsw i32
13 // CHECK: {{(cmpxchg i32*|i1 @__atomic_compare_exchange\(i32 4,)}}
14 i /= 2;
15 // CHECK: sdiv i32
16 // CHECK: {{(cmpxchg i32*|i1 @__atomic_compare_exchange\(i32 4, )}}
17 j /= x;
18 // CHECK: sdiv i32
19 // CHECK: {{(cmpxchg i16*|i1 @__atomic_compare_exchange\(i32 2, )}}
20
21 }
22
23 extern _Atomic _Bool b;
24
bar()25 _Bool bar() {
26 // CHECK-LABEL: @bar
27 // CHECK: %[[load:.*]] = load atomic i8, i8* @b seq_cst
28 // CHECK: %[[tobool:.*]] = trunc i8 %[[load]] to i1
29 // CHECK: ret i1 %[[tobool]]
30 return b;
31 }
32
33 extern _Atomic(_Complex int) x;
34
baz(int y)35 void baz(int y) {
36 // CHECK-LABEL: @baz
37 // CHECK: {{store atomic|call void @__atomic_store}}
38 x += y;
39 }
40