612f8ec7ac
This PR adds support seq_cst (sequential consistency) clause for the flush directive in OpenMP. The seq_cst clause enforces a stricter memory ordering, ensuring that all threads observe the memory effects of the flush in the same order, improving consistency in memory operations across threads. --------- Co-authored-by: Shashwathi N <nshashwa@pe28vega.hpc.amslabs.hpecorp.net> Co-authored-by: CHANDRA GHALE <chandra.nitdgp@gmail.com>
67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=51 -ast-print %s | FileCheck %s
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// RUN: %clang_cc1 -fopenmp -fopenmp-version=51 -x c++ -std=c++11 -emit-pch -o %t %s
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// RUN: %clang_cc1 -fopenmp -fopenmp-version=51 -std=c++11 -include-pch %t -verify %s -ast-print | FileCheck %s
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// RUN: %clang_cc1 -verify -fopenmp-simd -fopenmp-version=51 -ast-print %s | FileCheck %s
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// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=51 -x c++ -std=c++11 -emit-pch -o %t %s
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// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=51 -std=c++11 -include-pch %t -verify %s -ast-print | FileCheck %s
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// expected-no-diagnostics
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#ifndef HEADER
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#define HEADER
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void foo() {}
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template <class T>
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T tmain(T argc) {
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static T a;
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#pragma omp flush
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#pragma omp flush acq_rel
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#pragma omp flush acquire
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#pragma omp flush release
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#pragma omp flush seq_cst
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#pragma omp flush(a)
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return a + argc;
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}
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// CHECK: static T a;
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// CHECK-NEXT: #pragma omp flush{{$}}
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// CHECK-NEXT: #pragma omp flush acq_rel{{$}}
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// CHECK-NEXT: #pragma omp flush acquire{{$}}
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// CHECK-NEXT: #pragma omp flush release{{$}}
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// CHECK-NEXT: #pragma omp flush seq_cst{{$}}
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// CHECK-NEXT: #pragma omp flush (a)
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// CHECK: static int a;
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// CHECK-NEXT: #pragma omp flush
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// CHECK-NEXT: #pragma omp flush acq_rel{{$}}
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// CHECK-NEXT: #pragma omp flush acquire{{$}}
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// CHECK-NEXT: #pragma omp flush release{{$}}
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// CHECK-NEXT: #pragma omp flush seq_cst{{$}}
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// CHECK-NEXT: #pragma omp flush (a)
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// CHECK: static char a;
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// CHECK-NEXT: #pragma omp flush
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// CHECK-NEXT: #pragma omp flush acq_rel{{$}}
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// CHECK-NEXT: #pragma omp flush acquire{{$}}
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// CHECK-NEXT: #pragma omp flush release{{$}}
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// CHECK-NEXT: #pragma omp flush seq_cst{{$}}
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// CHECK-NEXT: #pragma omp flush (a)
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int main(int argc, char **argv) {
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static int a;
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// CHECK: static int a;
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#pragma omp flush
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#pragma omp flush acq_rel
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#pragma omp flush acquire
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#pragma omp flush release
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#pragma omp flush seq_cst
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#pragma omp flush(a)
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// CHECK-NEXT: #pragma omp flush
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// CHECK-NEXT: #pragma omp flush acq_rel
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// CHECK-NEXT: #pragma omp flush acquire{{$}}
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// CHECK-NEXT: #pragma omp flush release
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// CHECK-NEXT: #pragma omp flush seq_cst
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// CHECK-NEXT: #pragma omp flush (a)
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return tmain(argc) + tmain(argv[0][0]) + a;
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}
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#endif
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