clang/test/OpenMP/master_codegen.cpp

// RUN: %clang_cc1 -verify -fopenmp -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck %s --check-prefixes=ALL,NORMAL
// RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
// RUN: %clang_cc1 -fopenmp -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s --check-prefixes=ALL,NORMAL
// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp -fexceptions -fcxx-exceptions -debug-info-kind=line-tables-only -x c++ -emit-llvm %s -o - | FileCheck %s --check-prefix=TERM_DEBUG
// RUN: %clang_cc1 -verify -fopenmp -fopenmp-enable-irbuilder -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck %s --check-prefixes=ALL,IRBUILDER
// RUN: %clang_cc1 -fopenmp -fopenmp-enable-irbuilder -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
// RUN: %clang_cc1 -fopenmp -fopenmp-enable-irbuilder -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s --check-prefixes=ALL,IRBUILDER

// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck --check-prefix SIMD-ONLY0 %s
// RUN: %clang_cc1 -fopenmp-simd -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
// RUN: %clang_cc1 -fopenmp-simd -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY0 %s
// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp-simd -fexceptions -fcxx-exceptions -debug-info-kind=line-tables-only -x c++ -emit-llvm %s -o - | FileCheck --check-prefix SIMD-ONLY0 %s
// SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
// expected-no-diagnostics
#ifndef HEADER
#define HEADER

// ALL:       [[IDENT_T_TY:%.+]] = type { i32, i32, i32, i32, ptr }

// ALL:       define {{.*}}void [[FOO:@.+]]()

void foo() { extern void mayThrow(); mayThrow(); }

// ALL-LABEL: @main
// TERM_DEBUG-LABEL: @main
int main() {
  // ALL:      			[[A_ADDR:%.+]] = alloca i8
  char a;

// ALL:       			[[GTID:%.+]] = call {{.*}}i32 @__kmpc_global_thread_num(ptr [[DEFAULT_LOC:@.+]])
// ALL:       			[[RES:%.+]] = call {{.*}}i32 @__kmpc_master(ptr [[DEFAULT_LOC]], i32 [[GTID]])
// ALL-NEXT:  			[[IS_MASTER:%.+]] = icmp ne i32 [[RES]], 0
// ALL-NEXT:  			br i1 [[IS_MASTER]], label {{%?}}[[THEN:.+]], label {{%?}}[[EXIT:.+]]
// ALL:       			[[THEN]]
// ALL-NEXT:  			store i8 2, ptr [[A_ADDR]]
// IRBUILDER-NEXT:		br label %[[AFTER:[^ ,]+]]
// IRBUILDER:			[[AFTER]]
// ALL-NEXT:  			call {{.*}}void @__kmpc_end_master(ptr [[DEFAULT_LOC]], i32 [[GTID]])
// ALL-NEXT:  			br label {{%?}}[[EXIT]]
// ALL:       			[[EXIT]]
#pragma omp master
  a = 2;
// IRBUILDER: 			[[GTID:%.+]] = call {{.*}}i32 @__kmpc_global_thread_num(ptr [[DEFAULT_LOC:@.+]])
// ALL:       			[[RES:%.+]] = call {{.*}}i32 @__kmpc_master(ptr [[DEFAULT_LOC]], i32 [[GTID]])
// ALL-NEXT:  			[[IS_MASTER:%.+]] = icmp ne i32 [[RES]], 0
// ALL-NEXT:  			br i1 [[IS_MASTER]], label {{%?}}[[THEN:.+]], label {{%?}}[[EXIT:.+]]
// ALL:       			[[THEN]]
// IRBUILDER-NEXT:  call {{.*}}void [[FOO]]()
// NORMAL-NEXT:  		invoke {{.*}}void [[FOO]]()
// ALL:       			call {{.*}}void @__kmpc_end_master(ptr [[DEFAULT_LOC]], i32 [[GTID]])
// ALL-NEXT:  			br label {{%?}}[[EXIT]]
// ALL:       			[[EXIT]]
#pragma omp master
  foo();
  // ALL-NOT:   call i32 @__kmpc_master
  // ALL-NOT:   call void @__kmpc_end_master
  return a;
}

// ALL-LABEL:        lambda_master
// TERM_DEBUG-LABEL: lambda_master
void lambda_master(int a, int b) {
  auto l = [=]() {
#pragma omp master
    {
      // ALL: call i32 @__kmpc_master(
      int c = a + b;
    }
  };

  l();

  auto l1 = [=]() {
#pragma omp parallel
#pragma omp master
    {
      // ALL: call i32 @__kmpc_master(
      int c = a + b;
    }
  };

  l1();

  auto l2 = [=]() {
#pragma omp parallel master
    {
      // ALL: call i32 @__kmpc_master(
      int c = a + b;
    }
  };

  l2();
}

// ALL-LABEL:      parallel_master
// TERM_DEBUG-LABEL: parallel_master
void parallel_master() {
#pragma omp parallel
#pragma omp master
  // TERM_DEBUG-NOT: __kmpc_global_thread_num
  // TERM_DEBUG:     call i32 @__kmpc_master({{.+}}), !dbg [[DBG_LOC_START:![0-9]+]]
  // TERM_DEBUG:     invoke void {{.*}}foo{{.*}}()
  // TERM_DEBUG:     unwind label %[[TERM_LPAD:.+]],
  // TERM_DEBUG-NOT: __kmpc_global_thread_num
  // TERM_DEBUG:     call void @__kmpc_end_master({{.+}}), !dbg [[DBG_LOC_END:![0-9]+]]
  // TERM_DEBUG:     [[TERM_LPAD]]
  // TERM_DEBUG:     call void @__clang_call_terminate
  // TERM_DEBUG:     unreachable
  foo();
}
// TERM_DEBUG-DAG: [[DBG_LOC_START]] = !DILocation(line: [[@LINE-12]],
// TERM_DEBUG-DAG: [[DBG_LOC_END]] = !DILocation(line: [[@LINE-3]],

#endif