1 // RUN: %clang_cc1 -verify -fopenmp -x c++ -emit-llvm -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -o - %s | FileCheck %s 2 // RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -triple x86_64-unknown-unknown -emit-pch -o %t %s 3 // RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -include-pch %t -fsyntax-only -verify %s -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-llvm -o - | FileCheck %s 4 // expected-no-diagnostics 5 #ifndef HEADER 6 #define HEADER 7 // CHECK: [[IMPLICIT_BARRIER_SECTIONS_LOC:@.+]] = private unnamed_addr constant %{{.+}} { i32 0, i32 194, i32 0, i32 0, i8* 8 // CHECK-LABEL: foo 9 void foo() {}; 10 // CHECK-LABEL: bar 11 void bar() {}; 12 13 template <class T> 14 T tmain() { 15 #pragma omp parallel 16 #pragma omp sections 17 { 18 foo(); 19 } 20 return T(); 21 } 22 23 // CHECK-LABEL: @main 24 int main() { 25 float l = 0.0; // Used as a base point in checks. 26 // CHECK: [[GTID:%.+]] = call{{.*}} i32 @__kmpc_global_thread_num({{.*}}) 27 // CHECK: store float 28 #pragma omp sections 29 { 30 // CHECK: store i32 0, i32* [[LB_PTR:%.+]], 31 // CHECK: store i32 1, i32* [[UB_PTR:%.+]], 32 // CHECK: call void @__kmpc_for_static_init_4(%{{.+}}* @{{.+}}, i32 [[GTID]], i32 34, i32* [[IS_LAST_PTR:%.+]], i32* [[LB_PTR]], i32* [[UB_PTR]], i32* [[STRIDE_PTR:%.+]], i32 1, i32 1) 33 // <<UB = min(UB, GlobalUB);>> 34 // CHECK: [[UB:%.+]] = load i32, i32* [[UB_PTR]] 35 // CHECK: [[CMP:%.+]] = icmp slt i32 [[UB]], 1 36 // CHECK: [[MIN_UB_GLOBALUB:%.+]] = select i1 [[CMP]], i32 [[UB]], i32 1 37 // CHECK: store i32 [[MIN_UB_GLOBALUB]], i32* [[UB_PTR]] 38 // <<IV = LB;>> 39 // CHECK: [[LB:%.+]] = load i32, i32* [[LB_PTR]] 40 // CHECK: store i32 [[LB]], i32* [[IV_PTR:%.+]] 41 // CHECK: br label %[[INNER_FOR_COND:.+]] 42 // CHECK: [[INNER_FOR_COND]] 43 // <<IV <= UB?>> 44 // CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]] 45 // CHECK: [[UB:%.+]] = load i32, i32* [[UB_PTR]] 46 // CHECK: [[CMP:%.+]] = icmp sle i32 [[IV]], [[UB]] 47 // CHECK: br i1 [[CMP]], label %[[INNER_LOOP_BODY:.+]], label %[[INNER_LOOP_END:.+]] 48 // CHECK: [[INNER_LOOP_BODY]] 49 // <<TRUE>> - > <BODY> 50 // CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]] 51 // CHECK: switch i32 [[IV]], label %[[SECTIONS_EXIT:.+]] [ 52 // CHECK-NEXT: i32 0, label %[[SECTIONS_CASE0:.+]] 53 // CHECK-NEXT: i32 1, label %[[SECTIONS_CASE1:.+]] 54 #pragma omp section 55 // CHECK: [[SECTIONS_CASE0]] 56 // CHECK-NEXT: invoke void @{{.*}}foo{{.*}}() 57 // CHECK: br label %[[SECTIONS_EXIT]] 58 foo(); 59 #pragma omp section 60 // CHECK: [[SECTIONS_CASE1]] 61 // CHECK-NEXT: invoke void @{{.*}}bar{{.*}}() 62 // CHECK: br label %[[SECTIONS_EXIT]] 63 bar(); 64 // CHECK: [[SECTIONS_EXIT]] 65 // <<++IV;>> 66 // CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]] 67 // CHECK-NEXT: [[INC:%.+]] = add nsw i32 [[IV]], 1 68 // CHECK-NEXT: store i32 [[INC]], i32* [[IV_PTR]] 69 // CHECK-NEXT: br label %[[INNER_FOR_COND]] 70 // CHECK: [[INNER_LOOP_END]] 71 } 72 // CHECK: call void @__kmpc_for_static_fini(%{{.+}}* @{{.+}}, i32 [[GTID]]) 73 // CHECK: call void @__kmpc_barrier(%{{.+}}* [[IMPLICIT_BARRIER_SECTIONS_LOC]], 74 #pragma omp sections nowait 75 { 76 foo(); 77 #pragma omp section 78 bar(); 79 } 80 // CHECK-NOT: __kmpc_cancel_barrier 81 return tmain<int>(); 82 } 83 84 // CHECK-LABEL: tmain 85 // CHECK: call void {{.*}} @__kmpc_fork_call( 86 // CHECK-NOT: __kmpc_global_thread_num 87 // CHECK: call void @__kmpc_for_static_init_4( 88 // CHECK: invoke void @{{.*}}foo{{.*}}() 89 // CHECK-NEXT: unwind label %[[TERM_LPAD:.+]] 90 // CHECK: call void @__kmpc_for_static_fini( 91 // CHECK: call void @__kmpc_barrier(%{{.+}}* [[IMPLICIT_BARRIER_SECTIONS_LOC]], 92 // CHECK: ret 93 // CHECK: [[TERM_LPAD]] 94 // CHECK: call void @__clang_call_terminate(i8* 95 // CHECK-NEXT: unreachable 96 97 #endif 98