mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-19 11:35:51 -04:00
c2c21ef9d2
Summary: Some OpenMP clauses rely on the values of the variables. If the variable is not initialized and used in OpenMP clauses that depend on the variables values, it should be reported that the uninitialized variable is used in the OpenMP clause expression. This patch adds initial processing for uninitialized variables in OpenMP constructs. Currently, it checks for use of the uninitialized variables in the structured blocks. Reviewers: NoQ, Szelethus, dcoughlin, xazax.hun, a.sidorin, george.karpenkov, szepet Subscribers: rnkovacs, guansong, jfb, jdoerfert, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D64356 llvm-svn: 365786
96 lines
3.1 KiB
C++
96 lines
3.1 KiB
C++
// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
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// RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
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void xxx(int argc) {
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int x; // expected-note {{initialize the variable 'x' to silence this warning}}
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#pragma omp parallel for
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for(int i = 0; i < 10; ++i)
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argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
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}
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void foo() {
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}
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#pragma omp parallel for // expected-error {{unexpected OpenMP directive '#pragma omp parallel for'}}
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int main(int argc, char **argv) {
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#pragma omp parallel for { // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp parallel for ( // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp parallel for[ // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp parallel for] // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp parallel for) // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp parallel for } // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp parallel for
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for (int i = 0; i < argc; ++i)
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foo();
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// expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
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#pragma omp parallel for unknown()
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for (int i = 0; i < argc; ++i)
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foo();
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L1:
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp parallel for
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp parallel for
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for (int i = 0; i < argc; ++i) {
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goto L1; // expected-error {{use of undeclared label 'L1'}}
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argc++;
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}
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for (int i = 0; i < 10; ++i) {
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switch (argc) {
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case (0):
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#pragma omp parallel for
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for (int i = 0; i < argc; ++i) {
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foo();
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break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
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continue;
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}
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default:
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break;
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}
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}
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#pragma omp parallel for default(none) // expected-note {{explicit data sharing attribute requested here}}
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for (int i = 0; i < 10; ++i)
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++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
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goto L2; // expected-error {{use of undeclared label 'L2'}}
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#pragma omp parallel for
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for (int i = 0; i < argc; ++i)
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L2:
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foo();
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#pragma omp parallel for
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for (int i = 0; i < argc; ++i) {
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return 1; // expected-error {{cannot return from OpenMP region}}
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}
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[[]] // expected-error {{an attribute list cannot appear here}}
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#pragma omp parallel for
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for (int n = 0; n < 100; ++n) {
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}
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return 0;
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}
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void test_ordered() {
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#pragma omp parallel for ordered ordered // expected-error {{directive '#pragma omp parallel for' cannot contain more than one 'ordered' clause}}
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for (int i = 0; i < 16; ++i)
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;
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}
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