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The following appears in OpenMP 3.1 sec. 2.9.1.1 as a predetermined data-sharing attribute: > Variables with const-qualified type having no mutable member are > shared. It does not appear in OpenmP 4.0, 4.5, or 5.0. This patch removes the implementation of that attribute when the requested OpenMP version is greater than 3.1. One effect of that removal is that `default(none)` affects const variables without mutable members. Also, without this patch, if a const variable without mutable members was explicitly lastprivate or private, it was an error because it was predetermined shared. Now, clang instead complains that it's const without mutable fields, which is a more intelligible diagnostic. That should be fine for all of the above versions because they all have something like the following, which is quoted from OpenMP 5.0 sec. 2.19.3: > A variable that is privatized must not have a const-qualified type > unless it is of class type with a mutable member. This restriction does > not apply to the firstprivate clause. reduction and linear clauses already have separate checks for const variables. Future patches will merge the implementations. Reviewed By: ABataev Differential Revision: https://reviews.llvm.org/D56113 llvm-svn: 350439
32 lines
1.8 KiB
C++
32 lines
1.8 KiB
C++
// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -o - %s
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// RUN: %clang_cc1 -verify=expected,ge40 -fopenmp-simd -ferror-limit 100 -o - %s
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// RUN: %clang_cc1 -verify=expected,ge40 -fopenmp-version=50 -fopenmp -ferror-limit 100 -o - %s
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// RUN: %clang_cc1 -verify=expected,ge40 -fopenmp-version=40 -fopenmp -ferror-limit 100 -o - %s
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// RUN: %clang_cc1 -verify -fopenmp-version=31 -fopenmp -ferror-limit 100 -o - %s
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// RUN: %clang_cc1 -verify -fopenmp-version=30 -fopenmp -ferror-limit 100 -o - %s
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void foo();
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int main(int argc, char **argv) {
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const int c = 0;
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#pragma omp parallel default // expected-error {{expected '(' after 'default'}}
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#pragma omp parallel default ( // expected-error {{expected 'none' or 'shared' in OpenMP clause 'default'}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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#pragma omp parallel default () // expected-error {{expected 'none' or 'shared' in OpenMP clause 'default'}}
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#pragma omp parallel default (none // expected-error {{expected ')'}} expected-note {{to match this '('}}
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#pragma omp parallel default (shared), default(shared) // expected-error {{directive '#pragma omp parallel' cannot contain more than one 'default' clause}}
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#pragma omp parallel default (x) // expected-error {{expected 'none' or 'shared' in OpenMP clause 'default'}}
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foo();
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#pragma omp parallel default(none)
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++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
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#pragma omp parallel default(none)
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#pragma omp parallel default(shared)
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++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
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#pragma omp parallel default(none)
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(void)c; // ge40-error {{variable 'c' must have explicitly specified data sharing attributes}}
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return 0;
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}
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