clang/test/OpenMP/debug_private.c

   1 // This testcase checks emission of debug info for variables inside
   2 // private/firstprivate/lastprivate.
   3
   4 // REQUIRES: x86-registered-target
   5
   6 // RUN: %clang_cc1 -debug-info-kind=constructor -x c -verify -triple x86_64-pc-linux-gnu -fopenmp -emit-llvm %s -o - | FileCheck %s
   7 // RUN: %clang_cc1 -debug-info-kind=line-directives-only -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-tables-only -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=limited -x c -verify -triple x86_64-pc-linux-gnu -fopenmp -emit-llvm %s -o - | FileCheck %s
  10 // expected-no-diagnostics
  11
  12 // CHECK: define internal i32 @.omp_task_entry.
  13
  14 // CHECK:  call void @llvm.dbg.declare(metadata ptr %.priv.ptr.addr.i, metadata [[PRIV1:![0-9]+]], metadata !DIExpression(DW_OP_deref))
  15 // CHECK:  call void @llvm.dbg.declare(metadata ptr %.priv.ptr.addr1.i, metadata [[PRIV2:![0-9]+]], metadata !DIExpression(DW_OP_deref))
  16 // CHECK:  call void @llvm.dbg.declare(metadata ptr %.firstpriv.ptr.addr.i, metadata [[FPRIV:![0-9]+]], metadata !DIExpression(DW_OP_deref))
  17 // NEG-NOT: call void @llvm.dbg.declare
  18
  19 // CHECK: [[PRIV1]] = !DILocalVariable(name: "priv1"
  20 // CHECK: [[PRIV2]] = !DILocalVariable(name: "priv2"
  21 // CHECK: [[FPRIV]] = !DILocalVariable(name: "fpriv"
  22
  23 extern int printf(const char *, ...);
  24
  25 int foo(int n) {
  26   int res, priv1, priv2, fpriv;
  27   fpriv = n + 4;
  28
  29   if (n < 2)
  30     return n;
  31   else {
  32 #pragma omp task shared(res) private(priv1, priv2) firstprivate(fpriv)
  33     {
  34       priv1 = n;
  35       priv2 = n + 2;
  36       printf("Task n=%d,priv1=%d,priv2=%d,fpriv=%d\n", n, priv1, priv2, fpriv);
  37
  38       res = priv1 + priv2 + fpriv + foo(n - 1);
  39     }
  40 #pragma omp taskwait
  41     return res;
  42   }
  43 }
  44
  45 int main() {
  46   int n = 10;
  47   printf("foo(%d) = %d\n", n, foo(n));
  48   return 0;
  49 }