clang/test/CodeGen/X86/x86_64-atomic-128.c

   1 // RUN: %clang_cc1 -triple x86_64-linux-gnu -target-cpu core2 %s -emit-llvm -o - | FileCheck %s
   2
   3 // All atomics up to 16 bytes should be emitted inline on x86_64. The
   4 // backend can reform __sync_whatever calls if necessary (e.g. the CPU
   5 // doesn't have cmpxchg16b).
   6
   7 __int128 test_sync_call(__int128 *addr, __int128 val) {
   8   // CHECK-LABEL: @test_sync_call
   9   // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 16
  10   return __sync_fetch_and_add(addr, val);
  11 }
  12
  13 __int128 test_c11_call(_Atomic __int128 *addr, __int128 val) {
  14   // CHECK-LABEL: @test_c11_call
  15   // CHECK: atomicrmw sub ptr {{.*}} monotonic, align 16
  16   return __c11_atomic_fetch_sub(addr, val, 0);
  17 }
  18
  19 __int128 test_atomic_call(__int128 *addr, __int128 val) {
  20   // CHECK-LABEL: @test_atomic_call
  21   // CHECK: atomicrmw or ptr {{.*}} monotonic, align 16
  22   return __atomic_fetch_or(addr, val, 0);
  23 }
  24
  25 __int128 test_expression(_Atomic __int128 *addr) {
  26   // CHECK-LABEL: @test_expression
  27   // CHECK: atomicrmw and ptr {{.*}} seq_cst, align 16
  28   *addr &= 1;
  29 }