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      1 // RUN: %clang_cc1 -verify -fopenmp -ast-print %s | FileCheck %s
      2 // RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -emit-pch -o %t %s
      3 // RUN: %clang_cc1 -fopenmp -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
      4 // expected-no-diagnostics
      5 
      6 #ifndef HEADER
      7 #define HEADER
      8 
      9 template <class T>
     10 T foo(T argc) {
     11   T b = T();
     12   T a = T();
     13 #pragma omp atomic
     14   a++;
     15 #pragma omp atomic read
     16   a = argc;
     17 #pragma omp atomic write
     18   a = argc + argc;
     19 #pragma omp atomic update
     20   a = a + argc;
     21 #pragma omp atomic capture
     22   a = b++;
     23 #pragma omp atomic capture
     24   {
     25     a = b;
     26     b++;
     27   }
     28 #pragma omp atomic seq_cst
     29   a++;
     30 #pragma omp atomic read seq_cst
     31   a = argc;
     32 #pragma omp atomic seq_cst write
     33   a = argc + argc;
     34 #pragma omp atomic update seq_cst
     35   a = a + argc;
     36 #pragma omp atomic seq_cst capture
     37   a = b++;
     38 #pragma omp atomic capture seq_cst
     39   {
     40     a = b;
     41     b++;
     42   }
     43   return T();
     44 }
     45 
     46 // CHECK: int a = int();
     47 // CHECK-NEXT: #pragma omp atomic
     48 // CHECK-NEXT: a++;
     49 // CHECK-NEXT: #pragma omp atomic read
     50 // CHECK-NEXT: a = argc;
     51 // CHECK-NEXT: #pragma omp atomic write
     52 // CHECK-NEXT: a = argc + argc;
     53 // CHECK-NEXT: #pragma omp atomic update
     54 // CHECK-NEXT: a = a + argc;
     55 // CHECK-NEXT: #pragma omp atomic capture
     56 // CHECK-NEXT: a = b++;
     57 // CHECK-NEXT: #pragma omp atomic capture
     58 // CHECK-NEXT: {
     59 // CHECK-NEXT: a = b;
     60 // CHECK-NEXT: b++;
     61 // CHECK-NEXT: }
     62 // CHECK-NEXT: #pragma omp atomic seq_cst
     63 // CHECK-NEXT: a++;
     64 // CHECK-NEXT: #pragma omp atomic read seq_cst
     65 // CHECK-NEXT: a = argc;
     66 // CHECK-NEXT: #pragma omp atomic seq_cst write
     67 // CHECK-NEXT: a = argc + argc;
     68 // CHECK-NEXT: #pragma omp atomic update seq_cst
     69 // CHECK-NEXT: a = a + argc;
     70 // CHECK-NEXT: #pragma omp atomic seq_cst capture
     71 // CHECK-NEXT: a = b++;
     72 // CHECK-NEXT: #pragma omp atomic capture seq_cst
     73 // CHECK-NEXT: {
     74 // CHECK-NEXT: a = b;
     75 // CHECK-NEXT: b++;
     76 // CHECK-NEXT: }
     77 // CHECK: T a = T();
     78 // CHECK-NEXT: #pragma omp atomic
     79 // CHECK-NEXT: a++;
     80 // CHECK-NEXT: #pragma omp atomic read
     81 // CHECK-NEXT: a = argc;
     82 // CHECK-NEXT: #pragma omp atomic write
     83 // CHECK-NEXT: a = argc + argc;
     84 // CHECK-NEXT: #pragma omp atomic update
     85 // CHECK-NEXT: a = a + argc;
     86 // CHECK-NEXT: #pragma omp atomic capture
     87 // CHECK-NEXT: a = b++;
     88 // CHECK-NEXT: #pragma omp atomic capture
     89 // CHECK-NEXT: {
     90 // CHECK-NEXT: a = b;
     91 // CHECK-NEXT: b++;
     92 // CHECK-NEXT: }
     93 // CHECK-NEXT: #pragma omp atomic seq_cst
     94 // CHECK-NEXT: a++;
     95 // CHECK-NEXT: #pragma omp atomic read seq_cst
     96 // CHECK-NEXT: a = argc;
     97 // CHECK-NEXT: #pragma omp atomic seq_cst write
     98 // CHECK-NEXT: a = argc + argc;
     99 // CHECK-NEXT: #pragma omp atomic update seq_cst
    100 // CHECK-NEXT: a = a + argc;
    101 // CHECK-NEXT: #pragma omp atomic seq_cst capture
    102 // CHECK-NEXT: a = b++;
    103 // CHECK-NEXT: #pragma omp atomic capture seq_cst
    104 // CHECK-NEXT: {
    105 // CHECK-NEXT: a = b;
    106 // CHECK-NEXT: b++;
    107 // CHECK-NEXT: }
    108 
    109 int main(int argc, char **argv) {
    110   int b = 0;
    111   int a = 0;
    112 // CHECK: int a = 0;
    113 #pragma omp atomic
    114   a++;
    115 #pragma omp atomic read
    116   a = argc;
    117 #pragma omp atomic write
    118   a = argc + argc;
    119 #pragma omp atomic update
    120   a = a + argc;
    121 #pragma omp atomic capture
    122   a = b++;
    123 #pragma omp atomic capture
    124   {
    125     a = b;
    126     b++;
    127   }
    128 #pragma omp atomic seq_cst
    129   a++;
    130 #pragma omp atomic read seq_cst
    131   a = argc;
    132 #pragma omp atomic seq_cst write
    133   a = argc + argc;
    134 #pragma omp atomic update seq_cst
    135   a = a + argc;
    136 #pragma omp atomic seq_cst capture
    137   a = b++;
    138 #pragma omp atomic capture seq_cst
    139   {
    140     a = b;
    141     b++;
    142   }
    143   // CHECK-NEXT: #pragma omp atomic
    144   // CHECK-NEXT: a++;
    145   // CHECK-NEXT: #pragma omp atomic read
    146   // CHECK-NEXT: a = argc;
    147   // CHECK-NEXT: #pragma omp atomic write
    148   // CHECK-NEXT: a = argc + argc;
    149   // CHECK-NEXT: #pragma omp atomic update
    150   // CHECK-NEXT: a = a + argc;
    151   // CHECK-NEXT: #pragma omp atomic capture
    152   // CHECK-NEXT: a = b++;
    153   // CHECK-NEXT: #pragma omp atomic capture
    154   // CHECK-NEXT: {
    155   // CHECK-NEXT: a = b;
    156   // CHECK-NEXT: b++;
    157   // CHECK-NEXT: }
    158   // CHECK-NEXT: #pragma omp atomic seq_cst
    159   // CHECK-NEXT: a++;
    160   // CHECK-NEXT: #pragma omp atomic read seq_cst
    161   // CHECK-NEXT: a = argc;
    162   // CHECK-NEXT: #pragma omp atomic seq_cst write
    163   // CHECK-NEXT: a = argc + argc;
    164   // CHECK-NEXT: #pragma omp atomic update seq_cst
    165   // CHECK-NEXT: a = a + argc;
    166   // CHECK-NEXT: #pragma omp atomic seq_cst capture
    167   // CHECK-NEXT: a = b++;
    168   // CHECK-NEXT: #pragma omp atomic capture seq_cst
    169   // CHECK-NEXT: {
    170   // CHECK-NEXT: a = b;
    171   // CHECK-NEXT: b++;
    172   // CHECK-NEXT: }
    173   return foo(a);
    174 }
    175 
    176 #endif
    177