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teak-llvm/clang/test/OpenMP/distribute_simd_collapse_messages.cpp
Joel E. Denny 3234887fe2 [APSInt][OpenMP] Fix isNegative, etc. for unsigned types 
Without this patch, APSInt inherits APInt::isNegative, which merely
checks the sign bit without regard to whether the type is actually
signed.  isNonNegative and isStrictlyPositive call isNegative and so
are also affected.

This patch adjusts APSInt to override isNegative, isNonNegative, and
isStrictlyPositive with implementations that consider whether the type
is signed.

A large set of Clang OpenMP tests are affected.  Without this patch,
these tests assume that `true` is not a valid argument for clauses
like `collapse`.  Indeed, `true` fails APInt::isStrictlyPositive but
not APSInt::isStrictlyPositive.  This patch adjusts those tests to
assume `true` should be accepted.

This patch also adds tests revealing various other similar fixes due
to APSInt::isNegative calls in Clang's ExprConstant.cpp and
SemaExpr.cpp: `++` and `--` overflow in `constexpr`, evaluated object
size based on `alloc_size`, `<<` and `>>` shift count validation, and
OpenMP array section validation.

Reviewed By: lebedev.ri, ABataev, hfinkel

Differential Revision: https://reviews.llvm.org/D59712

llvm-svn: 359012
2019-04-23 17:04:15 +00:00

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// RUN: %clang_cc1 -verify -fopenmp %s
// RUN: %clang_cc1 -verify -fopenmp -std=c++98 %s
// RUN: %clang_cc1 -verify -fopenmp -std=c++11 %s
// RUN: %clang_cc1 -verify -fopenmp-simd %s
// RUN: %clang_cc1 -verify -fopenmp-simd -std=c++98 %s
// RUN: %clang_cc1 -verify -fopenmp-simd -std=c++11 %s
void foo() {
}
#if __cplusplus >= 201103L
// expected-note@+2 4 {{declared here}}
#endif
bool foobool(int argc) {
return argc;
}
struct S1; // expected-note {{declared here}}
template <class T, typename S, int N, int ST> // expected-note {{declared here}}
T tmain(T argc, S **argv) { //expected-note 2 {{declared here}}
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse // expected-error {{expected '(' after 'collapse'}}
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse () // expected-error {{expected expression}}
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#pragma omp target
#pragma omp teams
// expected-error@+3 {{expected ')'}} expected-note@+3 {{to match this '('}}
// expected-error@+2 2 {{expression is not an integral constant expression}}
// expected-note@+1 2 {{read of non-const variable 'argc' is not allowed in a constant expression}}
#pragma omp distribute simd collapse (argc
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#pragma omp target
#pragma omp teams
// expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
#pragma omp distribute simd collapse (ST // expected-error {{expected ')'}} expected-note {{to match this '('}}
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (1)) // expected-warning {{extra tokens at the end of '#pragma omp distribute simd' are ignored}}
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse ((ST > 0) ? 1 + ST : 2) // expected-note 2 {{as specified in 'collapse' clause}}
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST]; // expected-error 2 {{expected 2 for loops after '#pragma omp distribute simd', but found only 1}}
// expected-error@+8 2 {{directive '#pragma omp distribute simd' cannot contain more than one 'collapse' clause}}
// expected-error@+7 {{argument to 'collapse' clause must be a strictly positive integer value}}
// expected-error@+6 2 {{expression is not an integral constant expression}}
#if __cplusplus >= 201103L
// expected-note@+4 2 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
#endif
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (foobool(argc)), collapse (true), collapse (-5)
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (S) // expected-error {{'S' does not refer to a value}}
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#if __cplusplus <= 199711L
// expected-error@+6 2 {{expression is not an integral constant expression}}
#else
// expected-error@+4 2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
#endif
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (1)
for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (N) // expected-error {{argument to 'collapse' clause must be a strictly positive integer value}}
for (T i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (2) // expected-note {{as specified in 'collapse' clause}}
foo(); // expected-error {{expected 2 for loops after '#pragma omp distribute simd'}}
return argc;
}
int main(int argc, char **argv) {
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse // expected-error {{expected '(' after 'collapse'}}
for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse () // expected-error {{expected expression}}
for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (4 // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-note {{as specified in 'collapse' clause}}
for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4]; // expected-error {{expected 4 for loops after '#pragma omp distribute simd', but found only 1}}
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (2+2)) // expected-warning {{extra tokens at the end of '#pragma omp distribute simd' are ignored}} expected-note {{as specified in 'collapse' clause}}
for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4]; // expected-error {{expected 4 for loops after '#pragma omp distribute simd', but found only 1}}
// expected-error@+6 {{expression is not an integral constant expression}}
#if __cplusplus >= 201103L
// expected-note@+4 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
#endif
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (foobool(1) > 0 ? 1 : 2)
for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
// expected-error@+8 {{expression is not an integral constant expression}}
#if __cplusplus >= 201103L
// expected-note@+6{{non-constexpr function 'foobool' cannot be used in a constant expression}}
#endif
// expected-error@+4 2 {{directive '#pragma omp distribute simd' cannot contain more than one 'collapse' clause}}
// expected-error@+3 {{argument to 'collapse' clause must be a strictly positive integer value}}
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (foobool(argc)), collapse (true), collapse (-5)
for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (S1) // expected-error {{'S1' does not refer to a value}}
for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
#if __cplusplus <= 199711L
// expected-error@+6 {{expression is not an integral constant expression}}
#else
// expected-error@+4 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
#endif
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
// expected-error@+5 {{statement after '#pragma omp distribute simd' must be a for loop}}
// expected-note@+3 {{in instantiation of function template specialization 'tmain<int, char, -1, -2>' requested here}}
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse(collapse(tmain<int, char, -1, -2>(argc, argv) // expected-error 2 {{expected ')'}} expected-note 2 {{to match this '('}}
foo();
#pragma omp target
#pragma omp teams
#pragma omp distribute simd collapse (2) // expected-note {{as specified in 'collapse' clause}}
foo(); // expected-error {{expected 2 for loops after '#pragma omp distribute simd'}}
// expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, 1, 0>' requested here}}
return tmain<int, char, 1, 0>(argc, argv);
}
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