| 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 | |
| 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 | |
| 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 | |
| 35 | void baz(int y) { |
| 36 | // CHECK-LABEL: @baz |
| 37 | // CHECK: {{store atomic|call void @__atomic_store}} |
| 38 | x += y; |
| 39 | } |
| 40 | |