clang/test/OpenMP/debug_task_shared.c

   1 // This testcase checks emission of debug info for variables
   2 // inside shared clause of task construct.
   3
   4 // REQUIRES: x86-registered-target
   5
   6 // RUN: %clang_cc1 -debug-info-kind=constructor -DSHARED -x c -verify -triple x86_64-pc-linux-gnu -fopenmp -emit-llvm %s -o - | FileCheck %s --check-prefix=CHECK
   7 // RUN: %clang_cc1 -debug-info-kind=constructor -x c -verify -triple x86_64-pc-linux-gnu -fopenmp -emit-llvm %s -o - | FileCheck %s --check-prefix=NEG
   8 // RUN: %clang_cc1 -debug-info-kind=line-directives-only -DSHARED -x c -verify -triple x86_64-pc-linux-gnu -fopenmp -emit-llvm %s -o - | FileCheck %s --check-prefix=NEG
   9 // RUN: %clang_cc1 -debug-info-kind=line-tables-only -DSHARED -x c -verify -triple x86_64-pc-linux-gnu -fopenmp -emit-llvm %s -o - | FileCheck %s --check-prefix=NEG
  10 // RUN: %clang_cc1 -debug-info-kind=limited -DSHARED -x c -verify -triple x86_64-pc-linux-gnu -fopenmp -emit-llvm %s -o - | FileCheck %s --check-prefix=CHECK
  11 // expected-no-diagnostics
  12
  13 // CHECK-LABEL: define internal i32 @.omp_task_entry.
  14
  15 // CHECK-DAG:  [[CONTEXT:%[0-9]+]] = load ptr, ptr %__context.addr.i, align 8
  16 // CHECK-DAG:  #dbg_declare(ptr [[CONTEXT]], [[SHARE2:![0-9]+]], !DIExpression(DW_OP_deref),
  17 // CHECK-DAG:  #dbg_declare(ptr [[CONTEXT]], [[SHARE3:![0-9]+]], !DIExpression(DW_OP_plus_uconst, 8, DW_OP_deref),
  18 // CHECK-DAG:  #dbg_declare(ptr [[CONTEXT]], [[SHARE1:![0-9]+]], !DIExpression(DW_OP_plus_uconst, 16, DW_OP_deref),
  19
  20 // CHECK-DAG: [[SHARE2]] = !DILocalVariable(name: "share2"
  21 // CHECK-DAG: [[SHARE3]] = !DILocalVariable(name: "share3"
  22 // CHECK-DAG: [[SHARE1]] = !DILocalVariable(name: "share1"
  23
  24 // NEG-LABEL: define internal i32 @.omp_task_entry.
  25 // NEG:  [[CONTEXT:%[0-9]+]] = load ptr, ptr %__context.addr.i, align 8
  26 // NEG-NOT: #dbg_declare(ptr [[CONTEXT]], {{![0-9]+}}, !DIExpression(DW_OP_deref),
  27
  28 extern int printf(const char *, ...);
  29
  30 int foo(int n) {
  31   int share1 = 9, share2 = 11, share3 = 13, priv1, priv2, fpriv;
  32   fpriv = n + 4;
  33
  34   if (n < 2)
  35     return n;
  36   else {
  37 #if SHARED
  38 #pragma omp task shared(share1, share2) private(priv1, priv2) firstprivate(fpriv) shared(share3)
  39 #else
  40 #pragma omp task private(priv1, priv2) firstprivate(fpriv)
  41 #endif
  42     {
  43       priv1 = n;
  44       priv2 = n + 2;
  45       share2 += share3;
  46       printf("share1 = %d, share2 = %d, share3 = %d\n", share1, share2, share3);
  47       share1 = priv1 + priv2 + fpriv + foo(n - 1) + share2 + share3;
  48     }
  49 #pragma omp taskwait
  50     return share1 + share2 + share3;
  51   }
  52 }
  53
  54 int main() {
  55   int n = 10;
  56   printf("foo(%d) = %d\n", n, foo(n));
  57   return 0;
  58 }