2b8f722e63
The OpenMP device runtime needs to support the OpenMP standard. However constructs like nested parallelism are very uncommon in real application yet lead to complexity in the runtime that is sometimes difficult to optimize out. As a stop-gap for performance we should supply an argument that selectively disables this feature. This patch adds the `-fopenmp-assume-no-nested-parallelism` argument which explicitly disables the usee of nested parallelism in OpenMP. Reviewed By: carlo.bertolli Differential Revision: https://reviews.llvm.org/D132074
73 lines
6.1 KiB
C++
73 lines
6.1 KiB
C++
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --check-globals --global-value-regex "__omp_rtl_"
|
|
// Test target codegen - host bc file has to be created first.
|
|
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm-bc %s -o %t-ppc-host.bc
|
|
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-target-debug -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s --check-prefix=CHECK
|
|
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-target-debug=111 -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s --check-prefix=CHECK-EQ
|
|
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s --check-prefix=CHECK-DEFAULT
|
|
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-assume-threads-oversubscription -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s --check-prefix=CHECK-THREADS
|
|
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-assume-teams-oversubscription -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s --check-prefix=CHECK-TEAMS
|
|
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-assume-no-thread-state -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s --check-prefix=CHECK-STATE
|
|
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-assume-no-nested-parallelism -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s --check-prefix=CHECK-NESTED
|
|
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-is-device -nogpulib -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s --check-prefix=CHECK-RUNTIME
|
|
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-assume-teams-oversubscription -fopenmp-is-device -o - | FileCheck %s --check-prefix=CHECK-RUNTIME
|
|
// expected-no-diagnostics
|
|
|
|
#ifndef HEADER
|
|
#define HEADER
|
|
|
|
//.
|
|
// CHECK: @__omp_rtl_debug_kind = weak_odr hidden constant i32 1
|
|
// CHECK: @__omp_rtl_assume_teams_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK: @__omp_rtl_assume_threads_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK: @__omp_rtl_assume_no_thread_state = weak_odr hidden constant i32 0
|
|
// CHECK: @__omp_rtl_assume_no_nested_parallelism = weak_odr hidden constant i32 0
|
|
//.
|
|
// CHECK-EQ: @__omp_rtl_debug_kind = weak_odr hidden constant i32 111
|
|
// CHECK-EQ: @__omp_rtl_assume_teams_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-EQ: @__omp_rtl_assume_threads_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-EQ: @__omp_rtl_assume_no_thread_state = weak_odr hidden constant i32 0
|
|
// CHECK-EQ: @__omp_rtl_assume_no_nested_parallelism = weak_odr hidden constant i32 0
|
|
//.
|
|
// CHECK-DEFAULT: @__omp_rtl_debug_kind = weak_odr hidden constant i32 0
|
|
// CHECK-DEFAULT: @__omp_rtl_assume_teams_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-DEFAULT: @__omp_rtl_assume_threads_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-DEFAULT: @__omp_rtl_assume_no_thread_state = weak_odr hidden constant i32 0
|
|
// CHECK-DEFAULT: @__omp_rtl_assume_no_nested_parallelism = weak_odr hidden constant i32 0
|
|
//.
|
|
// CHECK-THREADS: @__omp_rtl_debug_kind = weak_odr hidden constant i32 0
|
|
// CHECK-THREADS: @__omp_rtl_assume_teams_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-THREADS: @__omp_rtl_assume_threads_oversubscription = weak_odr hidden constant i32 1
|
|
// CHECK-THREADS: @__omp_rtl_assume_no_thread_state = weak_odr hidden constant i32 0
|
|
// CHECK-THREADS: @__omp_rtl_assume_no_nested_parallelism = weak_odr hidden constant i32 0
|
|
//.
|
|
// CHECK-TEAMS: @__omp_rtl_debug_kind = weak_odr hidden constant i32 0
|
|
// CHECK-TEAMS: @__omp_rtl_assume_teams_oversubscription = weak_odr hidden constant i32 1
|
|
// CHECK-TEAMS: @__omp_rtl_assume_threads_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-TEAMS: @__omp_rtl_assume_no_thread_state = weak_odr hidden constant i32 0
|
|
// CHECK-TEAMS: @__omp_rtl_assume_no_nested_parallelism = weak_odr hidden constant i32 0
|
|
//.
|
|
// CHECK-STATE: @__omp_rtl_debug_kind = weak_odr hidden constant i32 0
|
|
// CHECK-STATE: @__omp_rtl_assume_teams_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-STATE: @__omp_rtl_assume_threads_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-STATE: @__omp_rtl_assume_no_thread_state = weak_odr hidden constant i32 1
|
|
// CHECK-STATE: @__omp_rtl_assume_no_nested_parallelism = weak_odr hidden constant i32 0
|
|
//.
|
|
// CHECK-NESTED: @__omp_rtl_debug_kind = weak_odr hidden constant i32 0
|
|
// CHECK-NESTED: @__omp_rtl_assume_teams_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-NESTED: @__omp_rtl_assume_threads_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-NESTED: @__omp_rtl_assume_no_thread_state = weak_odr hidden constant i32 0
|
|
// CHECK-NESTED: @__omp_rtl_assume_no_nested_parallelism = weak_odr hidden constant i32 1
|
|
//.
|
|
// CHECK-RUNTIME-NOT: @__omp_rtl_debug_kind = weak_odr hidden constant i32 0
|
|
// CHECK-RUNTIME-NOT: @__omp_rtl_assume_teams_oversubscription = weak_odr hidden constant i32 1
|
|
// CHECK-RUNTIME-NOT: @__omp_rtl_assume_threads_oversubscription = weak_odr hidden constant i32 0
|
|
// CHECK-RUNTIME-NOT: @__omp_rtl_assume_no_thread_state = weak_odr hidden constant i32 0
|
|
// CHECK-RUNTIME-NOT: @__omp_rtl_assume_no_nested_parallelism = weak_odr hidden constant i32 0
|
|
//.
|
|
void foo() {
|
|
#pragma omp target
|
|
{ }
|
|
}
|
|
|
|
#endif
|