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
