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llvm-project/clang/test/OpenMP/parallel_sections_codegen.cpp

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[OPENMP] -fopenmp enables OpenMP support (fix for http://llvm.org/PR23492) -fopenmp turns on OpenMP support and links libiomp5 as OpenMP library. Also there is -fopenmp={libiomp5|libgomp} option that allows to override effect of -fopenmp and link libgomp library (if -fopenmp=libgomp is specified). Differential Revision: http://reviews.llvm.org/D9736 llvm-svn: 237769
2015-05-20 12:24:19 +08:00
// RUN: %clang_cc1 -verify -fopenmp -x c++ -emit-llvm -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -o - %s | FileCheck %s
// RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -triple x86_64-unknown-unknown -emit-pch -o %t %s
// 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
[OPENMP] Initial codegen for 'parallel sections' directive. Emits code for outlined 'parallel' directive with the implicitly inlined 'sections' directive: ... call __kmpc_fork_call(..., outlined_function, ...); ... define internal void outlined_function(...) { <code for implicit sections directive>; } Differential Revision: http://reviews.llvm.org/D8997 llvm-svn: 234849
2015-04-14 11:29:22 +08:00
// expected-no-diagnostics
Revert "Revert r241620 and follow-up commits" and move the initialization of the llvm targets from clang/CodeGen into ClangCheck.cpp and CIndex.cpp. llvm-svn: 241653
2015-07-08 09:00:30 +08:00
// REQUIRES: x86-registered-target
[OPENMP] Initial codegen for 'parallel sections' directive. Emits code for outlined 'parallel' directive with the implicitly inlined 'sections' directive: ... call __kmpc_fork_call(..., outlined_function, ...); ... define internal void outlined_function(...) { <code for implicit sections directive>; } Differential Revision: http://reviews.llvm.org/D8997 llvm-svn: 234849
2015-04-14 11:29:22 +08:00
#ifndef HEADER
#define HEADER
// CHECK: [[IMPLICIT_BARRIER_LOC:@.+]] = private unnamed_addr constant %{{.+}} { i32 0, i32 66, i32 0, i32 0, i8*
// CHECK-LABEL: foo
void foo() {};
// CHECK-LABEL: bar
void bar() {};
template <class T>
T tmain() {
#pragma omp parallel sections
{
foo();
}
return T();
}
// CHECK-LABEL: @main
int main() {
[OPENMP] Outlined function for parallel and other regions with list of captured variables. Currently all variables used in OpenMP regions are captured into a record and passed to outlined functions in this record. It may result in some poor performance because of too complex analysis later in optimization passes. Patch makes to emit outlined functions for parallel-based regions with a list of captured variables. It reduces code for 2*n GEPs, stores and loads at least. Codegen for task-based regions remains unchanged because runtime requires that all captured variables are passed in captured record. llvm-svn: 247251
2015-09-10 16:12:02 +08:00
// CHECK: call void (%{{.+}}*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%{{.+}}* @{{.+}}, i32 0, void (i32*, i32*, ...)* bitcast (void (i32*, i32*)* [[OMP_PARALLEL_FUNC:@.+]] to void (i32*, i32*, ...)*))
[OPENMP] Initial codegen for 'parallel sections' directive. Emits code for outlined 'parallel' directive with the implicitly inlined 'sections' directive: ... call __kmpc_fork_call(..., outlined_function, ...); ... define internal void outlined_function(...) { <code for implicit sections directive>; } Differential Revision: http://reviews.llvm.org/D8997 llvm-svn: 234849
2015-04-14 11:29:22 +08:00
// CHECK-LABEL: }
[OPENMP] Outlined function for parallel and other regions with list of captured variables. Currently all variables used in OpenMP regions are captured into a record and passed to outlined functions in this record. It may result in some poor performance because of too complex analysis later in optimization passes. Patch makes to emit outlined functions for parallel-based regions with a list of captured variables. It reduces code for 2*n GEPs, stores and loads at least. Codegen for task-based regions remains unchanged because runtime requires that all captured variables are passed in captured record. llvm-svn: 247251
2015-09-10 16:12:02 +08:00
// CHECK: define internal void [[OMP_PARALLEL_FUNC]](i32* noalias [[GTID_PARAM_ADDR:%.+]], i32* noalias %{{.+}})
[OPENMP] Initial codegen for 'parallel sections' directive. Emits code for outlined 'parallel' directive with the implicitly inlined 'sections' directive: ... call __kmpc_fork_call(..., outlined_function, ...); ... define internal void outlined_function(...) { <code for implicit sections directive>; } Differential Revision: http://reviews.llvm.org/D8997 llvm-svn: 234849
2015-04-14 11:29:22 +08:00
// CHECK: store i32* [[GTID_PARAM_ADDR]], i32** [[GTID_REF_ADDR:%.+]],
#pragma omp parallel sections
{
// CHECK: store i32 0, i32* [[LB_PTR:%.+]],
// CHECK: store i32 1, i32* [[UB_PTR:%.+]],
// CHECK: [[GTID_REF:%.+]] = load i32*, i32** [[GTID_REF_ADDR]],
// CHECK: [[GTID:%.+]] = load i32, i32* [[GTID_REF]],
// 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)
// <<UB = min(UB, GlobalUB);>>
// CHECK: [[UB:%.+]] = load i32, i32* [[UB_PTR]]
// CHECK: [[CMP:%.+]] = icmp slt i32 [[UB]], 1
// CHECK: [[MIN_UB_GLOBALUB:%.+]] = select i1 [[CMP]], i32 [[UB]], i32 1
// CHECK: store i32 [[MIN_UB_GLOBALUB]], i32* [[UB_PTR]]
// <<IV = LB;>>
// CHECK: [[LB:%.+]] = load i32, i32* [[LB_PTR]]
// CHECK: store i32 [[LB]], i32* [[IV_PTR:%.+]]
// CHECK: br label %[[INNER_FOR_COND:.+]]
// CHECK: [[INNER_FOR_COND]]
// <<IV <= UB?>>
// CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]]
// CHECK: [[UB:%.+]] = load i32, i32* [[UB_PTR]]
// CHECK: [[CMP:%.+]] = icmp sle i32 [[IV]], [[UB]]
// CHECK: br i1 [[CMP]], label %[[INNER_LOOP_BODY:.+]], label %[[INNER_LOOP_END:.+]]
// CHECK: [[INNER_LOOP_BODY]]
// <<TRUE>> - > <BODY>
// CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]]
// CHECK: switch i32 [[IV]], label %[[SECTIONS_EXIT:.+]] [
// CHECK-NEXT: i32 0, label %[[SECTIONS_CASE0:.+]]
// CHECK-NEXT: i32 1, label %[[SECTIONS_CASE1:.+]]
#pragma omp section
// CHECK: [[SECTIONS_CASE0]]
// CHECK-NEXT: invoke void @{{.*}}foo{{.*}}()
// CHECK: br label %[[SECTIONS_EXIT]]
foo();
#pragma omp section
// CHECK: [[SECTIONS_CASE1]]
// CHECK-NEXT: invoke void @{{.*}}bar{{.*}}()
// CHECK: br label %[[SECTIONS_EXIT]]
bar();
// CHECK: [[SECTIONS_EXIT]]
// <<++IV;>>
// CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]]
// CHECK-NEXT: [[INC:%.+]] = add nsw i32 [[IV]], 1
// CHECK-NEXT: store i32 [[INC]], i32* [[IV_PTR]]
// CHECK-NEXT: br label %[[INNER_FOR_COND]]
// CHECK: [[INNER_LOOP_END]]
}
// CHECK: call void @__kmpc_for_static_fini(%{{.+}}* @{{.+}}, i32 [[GTID]])
[OPENMP 4.0] Fixed codegen for 'cancellation point' construct. Generate the next code for 'cancellation point': if (__kmpc_cancellationpoint()) { __kmpc_cancel_barrier(); <exit construct>; } llvm-svn: 241336
2015-07-03 17:56:58 +08:00
// CHECK: call void @__kmpc_barrier(%{{.+}}* [[IMPLICIT_BARRIER_LOC]],
[OPENMP] Initial codegen for 'parallel sections' directive. Emits code for outlined 'parallel' directive with the implicitly inlined 'sections' directive: ... call __kmpc_fork_call(..., outlined_function, ...); ... define internal void outlined_function(...) { <code for implicit sections directive>; } Differential Revision: http://reviews.llvm.org/D8997 llvm-svn: 234849
2015-04-14 11:29:22 +08:00
return tmain<int>();
}
// CHECK-LABEL: tmain
// CHECK: call void {{.*}} @__kmpc_fork_call(
// CHECK-NOT: __kmpc_global_thread_num
// CHECK: [[RES:%.+]] = call i32 @__kmpc_single(
// CHECK-NEXT: [[BOOLRES:%.+]] = icmp ne i32 [[RES]], 0
// CHECK-NEXT: br i1 [[BOOLRES]], label %[[THEN:.+]], label %[[END:.+]]
// CHECK: [[THEN]]
// CHECK-NEXT: invoke void @{{.*}}foo{{.*}}()
// CHECK-NEXT: unwind label %[[TERM_LPAD:.+]]
// CHECK: call void @__kmpc_end_single(
// CHECK-NEXT: br label %[[END]]
// CHECK: [[END]]
[OPENMP 4.0] Fixed codegen for 'cancellation point' construct. Generate the next code for 'cancellation point': if (__kmpc_cancellationpoint()) { __kmpc_cancel_barrier(); <exit construct>; } llvm-svn: 241336
2015-07-03 17:56:58 +08:00
// CHECK-NEXT: call void @__kmpc_barrier(%{{.+}}* [[IMPLICIT_BARRIER_LOC]],
[OPENMP] Initial codegen for 'parallel sections' directive. Emits code for outlined 'parallel' directive with the implicitly inlined 'sections' directive: ... call __kmpc_fork_call(..., outlined_function, ...); ... define internal void outlined_function(...) { <code for implicit sections directive>; } Differential Revision: http://reviews.llvm.org/D8997 llvm-svn: 234849
2015-04-14 11:29:22 +08:00
// CHECK-NEXT: ret
// CHECK: [[TERM_LPAD]]
// CHECK: call void @__clang_call_terminate(i8*
// CHECK-NEXT: unreachable
#endif