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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
103 lines
3.7 KiB
C++
103 lines
3.7 KiB
C++
// RUN: %clang_cc1 -verify -fopenmp -std=c++11 %s -Wuninitialized
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// RUN: %clang_cc1 -verify -fopenmp-simd -std=c++11 %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 target teams distribute simd
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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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static int pvt;
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#pragma omp threadprivate(pvt)
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#pragma omp target teams distribute simd // expected-error {{unexpected OpenMP directive '#pragma omp target teams distribute simd'}}
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int main(int argc, char **argv) {
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#pragma omp target teams distribute simd { // expected-warning {{extra tokens at the end of '#pragma omp target teams distribute simd' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp target teams distribute simd ( // expected-warning {{extra tokens at the end of '#pragma omp target teams distribute simd' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp target teams distribute simd[ // expected-warning {{extra tokens at the end of '#pragma omp target teams distribute simd' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp target teams distribute simd] // expected-warning {{extra tokens at the end of '#pragma omp target teams distribute simd' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp target teams distribute simd) // expected-warning {{extra tokens at the end of '#pragma omp target teams distribute simd' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp target teams distribute simd } // expected-warning {{extra tokens at the end of '#pragma omp target teams distribute simd' are ignored}}
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp target teams distribute simd
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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 target teams distribute simd' are ignored}}
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#pragma omp target teams distribute simd 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 target teams distribute simd
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for (int i = 0; i < argc; ++i)
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foo();
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#pragma omp target teams distribute simd
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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 target teams distribute simd
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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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// expected-error@+1 {{unexpected OpenMP clause 'default' in directive '#pragma omp target teams distribute simd'}}
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#pragma omp target teams distribute simd default(none)
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for (int i = 0; i < 10; ++i)
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++argc;
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goto L2; // expected-error {{use of undeclared label 'L2'}}
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#pragma omp target teams distribute simd
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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 target teams distribute simd
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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 target teams distribute simd
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for (int n = 0; n < 100; ++n) {
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}
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#pragma omp target teams distribute simd copyin(pvt) // expected-error {{unexpected OpenMP clause 'copyin' in directive '#pragma omp target teams distribute simd'}}
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for (int n = 0; n < 100; ++n) {}
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return 0;
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}
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void test_ordered() {
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#pragma omp target teams distribute simd ordered // expected-error {{unexpected OpenMP clause 'ordered' in directive '#pragma omp target teams distribute simd'}}
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for (int i = 0; i < 16; ++i)
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;
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}
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