clang/test/CodeGen/arm-atomics.c

   1 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=thumbv7-none--eabi | FileCheck %s
   2 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv6-none--eabi | FileCheck %s
   3 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv7-unknown-openbsd | FileCheck %s
   4
   5 int i;
   6 long long l;
   7
   8 typedef enum memory_order {
   9   memory_order_relaxed, memory_order_consume, memory_order_acquire,
  10   memory_order_release, memory_order_acq_rel, memory_order_seq_cst
  11 } memory_order;
  12
  13 void test_presence(void)
  14 {
  15   // CHECK-LABEL: @test_presence
  16   // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 4
  17   __atomic_fetch_add(&i, 1, memory_order_seq_cst);
  18   // CHECK: atomicrmw sub ptr {{.*}} seq_cst, align 4
  19   __atomic_fetch_sub(&i, 1, memory_order_seq_cst);
  20   // CHECK: load atomic i32, ptr {{.*}} seq_cst, align 4
  21   int r;
  22   __atomic_load(&i, &r, memory_order_seq_cst);
  23   // CHECK: store atomic i32 {{.*}} seq_cst, align 4
  24   r = 0;
  25   __atomic_store(&i, &r, memory_order_seq_cst);
  26
  27   // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 8
  28   __atomic_fetch_add(&l, 1, memory_order_seq_cst);
  29   // CHECK: atomicrmw sub ptr {{.*}} seq_cst, align 8
  30   __atomic_fetch_sub(&l, 1, memory_order_seq_cst);
  31   // CHECK: load atomic i64, ptr {{.*}} seq_cst, align 8
  32   long long rl;
  33   __atomic_load(&l, &rl, memory_order_seq_cst);
  34   // CHECK: store atomic i64 {{.*}} seq_cst, align 8
  35   rl = 0;
  36   __atomic_store(&l, &rl, memory_order_seq_cst);
  37 }