clang/test/OpenMP/requires_seq_cst_codegen.cpp

   1 // RUN: %clang_cc1 -verify -fopenmp %s -triple x86_64-apple-darwin10 -x c++ -emit-llvm -o - | FileCheck %s
   2 // RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -emit-pch -o %t %s -triple x86_64-apple-darwin10
   3 // RUN: %clang_cc1 -fopenmp -std=c++11 -include-pch %t -verify %s -triple x86_64-apple-darwin10 -x c++ -emit-llvm -o -| FileCheck %s
   4
   5 // RUN: %clang_cc1 -verify -fopenmp-simd %s -x c++ -emit-llvm -triple x86_64-apple-darwin10 -o -| FileCheck %s --check-prefix SIMD-ONLY0
   6 // RUN: %clang_cc1 -fopenmp-simd -x c++ -std=c++11 -emit-pch -o %t %s -triple x86_64-apple-darwin10
   7 // RUN: %clang_cc1 -fopenmp-simd -std=c++11 -include-pch %t -verify %s -x c++ -emit-llvm -triple x86_64-apple-darwin10 -o -| FileCheck %s --check-prefix SIMD-ONLY0
   8 // SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
   9 // expected-no-diagnostics
  10
  11 #ifndef HEADER
  12 #define HEADER
  13
  14 #pragma omp requires atomic_default_mem_order(seq_cst)
  15
  16 // CHECK-LABEL: foo
  17 void foo() {
  18   int a = 0, b = 0;
  19 // CHECK: load atomic i32, {{.*}} seq_cst, align 4
  20 #pragma omp atomic read
  21   a = b;
  22 // CHECK: store atomic i32 {{.*}} seq_cst, align 4
  23 #pragma omp atomic write
  24   a = b;
  25 // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 4
  26 #pragma omp atomic
  27   a += 1;
  28 // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 4
  29 #pragma omp atomic update
  30   a += 1;
  31 // CHECK: atomicrmw add ptr {{.*}} seq_cst, align 4
  32 #pragma omp atomic capture
  33   {
  34     b = a;
  35     a += 1;
  36   }
  37 }
  38
  39 #endif