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 // REQUIRES: x86-registered-target 6 #ifndef HEADER 7 #define HEADER 8 // CHECK: [[IMPLICIT_BARRIER_SECTIONS_LOC:@.+]] = private unnamed_addr constant %{{.+}} { i32 0, i32 194, i32 0, i32 0, i8* 9 // CHECK-LABEL: foo 10 void foo() {}; 11 // CHECK-LABEL: bar 12 void bar() {}; 13 14 template <class T> 15 T tmain() { 16 #pragma omp parallel 17 #pragma omp sections 18 { 19 foo(); 20 } 21 return T(); 22 } 23 24 // CHECK-LABEL: @main 25 int main() { 26 float l = 0.0; // Used as a base point in checks. 27 // CHECK: [[GTID:%.+]] = call{{.*}} i32 @__kmpc_global_thread_num({{.*}}) 28 // CHECK: store float 29 #pragma omp sections 30 { 31 // CHECK: store i32 0, i32* [[LB_PTR:%.+]], 32 // CHECK: store i32 1, i32* [[UB_PTR:%.+]], 33 // 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) 34 // <<UB = min(UB, GlobalUB);>> 35 // CHECK: [[UB:%.+]] = load i32, i32* [[UB_PTR]] 36 // CHECK: [[CMP:%.+]] = icmp slt i32 [[UB]], 1 37 // CHECK: [[MIN_UB_GLOBALUB:%.+]] = select i1 [[CMP]], i32 [[UB]], i32 1 38 // CHECK: store i32 [[MIN_UB_GLOBALUB]], i32* [[UB_PTR]] 39 // <<IV = LB;>> 40 // CHECK: [[LB:%.+]] = load i32, i32* [[LB_PTR]] 41 // CHECK: store i32 [[LB]], i32* [[IV_PTR:%.+]] 42 // CHECK: br label %[[INNER_FOR_COND:.+]] 43 // CHECK: [[INNER_FOR_COND]] 44 // <<IV <= UB?>> 45 // CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]] 46 // CHECK: [[UB:%.+]] = load i32, i32* [[UB_PTR]] 47 // CHECK: [[CMP:%.+]] = icmp sle i32 [[IV]], [[UB]] 48 // CHECK: br i1 [[CMP]], label %[[INNER_LOOP_BODY:.+]], label %[[INNER_LOOP_END:.+]] 49 // CHECK: [[INNER_LOOP_BODY]] 50 // <<TRUE>> - > <BODY> 51 // CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]] 52 // CHECK: switch i32 [[IV]], label %[[SECTIONS_EXIT:.+]] [ 53 // CHECK-NEXT: i32 0, label %[[SECTIONS_CASE0:.+]] 54 // CHECK-NEXT: i32 1, label %[[SECTIONS_CASE1:.+]] 55 #pragma omp section 56 // CHECK: [[SECTIONS_CASE0]] 57 // CHECK-NEXT: invoke void @{{.*}}foo{{.*}}() 58 // CHECK: br label %[[SECTIONS_EXIT]] 59 foo(); 60 #pragma omp section 61 // CHECK: [[SECTIONS_CASE1]] 62 // CHECK-NEXT: invoke void @{{.*}}bar{{.*}}() 63 // CHECK: br label %[[SECTIONS_EXIT]] 64 bar(); 65 // CHECK: [[SECTIONS_EXIT]] 66 // <<++IV;>> 67 // CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]] 68 // CHECK-NEXT: [[INC:%.+]] = add nsw i32 [[IV]], 1 69 // CHECK-NEXT: store i32 [[INC]], i32* [[IV_PTR]] 70 // CHECK-NEXT: br label %[[INNER_FOR_COND]] 71 // CHECK: [[INNER_LOOP_END]] 72 } 73 // CHECK: call void @__kmpc_for_static_fini(%{{.+}}* @{{.+}}, i32 [[GTID]]) 74 // CHECK: call void @__kmpc_barrier(%{{.+}}* [[IMPLICIT_BARRIER_SECTIONS_LOC]], 75 #pragma omp sections nowait 76 { 77 foo(); 78 #pragma omp section 79 bar(); 80 } 81 // CHECK-NOT: __kmpc_cancel_barrier 82 return tmain<int>(); 83 } 84 85 // CHECK-LABEL: tmain 86 // CHECK: call void {{.*}} @__kmpc_fork_call( 87 // CHECK-NOT: __kmpc_global_thread_num 88 // CHECK: call void @__kmpc_for_static_init_4( 89 // CHECK: invoke void @{{.*}}foo{{.*}}() 90 // CHECK-NEXT: unwind label %[[TERM_LPAD:.+]] 91 // CHECK: call void @__kmpc_for_static_fini( 92 // CHECK: call void @__kmpc_barrier(%{{.+}}* [[IMPLICIT_BARRIER_SECTIONS_LOC]], 93 // CHECK: ret 94 // CHECK: [[TERM_LPAD]] 95 // CHECK: call void @__clang_call_terminate(i8* 96 // CHECK-NEXT: unreachable 97 98 #endif 99