clang/test/OpenMP/cancel_codegen_cleanup.cpp

   1 // RUN: %clang_cc1 -std=c++11 -fopenmp -fopenmp-version=45 -triple x86_64-apple-darwin13.4.0 -emit-llvm -o - %s | FileCheck %s
   2
   3 // RUN: %clang_cc1 -std=c++11 -fopenmp-simd -fopenmp-version=45 -triple x86_64-apple-darwin13.4.0 -emit-llvm -o - %s | FileCheck --check-prefix SIMD-ONLY0 %s
   4 // SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
   5
   6 // RUN: %clang_cc1 -std=c++11 -fopenmp -triple x86_64-apple-darwin13.4.0 -emit-llvm -o - %s | FileCheck %s
   7 // RUN: %clang_cc1 -std=c++11 -fopenmp-simd -triple x86_64-apple-darwin13.4.0 -emit-llvm -o - %s | FileCheck --check-prefix SIMD-ONLY0 %s
   8 // SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
   9
  10 //CHECK: call i32 @__kmpc_cancel
  11 //CHECK: br {{.*}}label %[[EXIT:[^,].+]], label %[[CONTINUE:.+]]
  12 //CHECK: [[EXIT]]:
  13 //CHECK: store i32 [[EXIT_SLOT:[0-9]+]]
  14 //CHECK: br label %[[CLEANUP:.+]]
  15 //CHECK: [[CONTINUE]]:
  16 //CHECK: store i32 [[CONT_SLOT:[0-9]+]],
  17 //CHECK: br label %[[CLEANUP]]
  18 //CHECK: [[CLEANUP]]:
  19 //CHECK-NEXT: call void @_ZN3ObjD1Ev
  20 //CHECK: switch i32{{.*}}, label %[[UNREACHABLE:.+]] [
  21 //CHECK:   i32 [[CONT_SLOT]], label %[[CLEANUPCONT:.+]]
  22 //CHECK:   i32 [[EXIT_SLOT]], label %[[CANCELEXIT:.+]]
  23 //CHECK-NEXT: ]
  24 //CHECK: [[CLEANUPCONT]]:
  25 //CHECK: br label %[[CANCELCONT:.+]]
  26 //CHECK: [[CANCELCONT]]:
  27 //CHECK-NEXT: call void @__kmpc_barrier(
  28 //CHECK-NEXT: ret void
  29 //CHECK: [[UNREACHABLE]]:
  30 //CHECK-NEXT: unreachable
  31 //CHECK-NEXT: }
  32
  33 struct Obj {
  34   int a; Obj(); Obj(const Obj& r) = delete; Obj &operator=(const Obj& r);
  35   ~Obj();
  36 };
  37
  38 void foo() {
  39   int i,count = 0;
  40   Obj obj;
  41
  42   #pragma omp parallel private(i) num_threads(1)
  43   {
  44       #pragma omp for reduction(+:count) lastprivate(obj)
  45       for (i=0; i<1000; i++) {
  46             if(i==100) {
  47                 obj.a = 100;
  48                 #pragma omp cancel for
  49             }
  50             count++;
  51         }
  52     }
  53 }