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https://github.com/capstone-engine/llvm-capstone.git
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4a5bb772c3
This patch generates some helper variables that used as private copies of the corresponding original variables inside an OpenMP 'parallel' directive. These generated variables are initialized by copy using values of the original variables (with the copy constructor, if any). For arrays, initializator is generated for single element and in the codegen procedure this initial value is automatically propagated between all elements of the private copy. In outlined function, references to original variables are replaced by the references to these private helper variables. At the end of the initialization of the private variables an implicit barier is generated by calling __kmpc_barrier(...) runtime function to be sure that all threads were initialized using original values of the variables. Differential Revision: http://reviews.llvm.org/D5140 llvm-svn: 219306
286 lines
10 KiB
C++
286 lines
10 KiB
C++
// RUN: %clang_cc1 -verify -fopenmp=libiomp5 -ferror-limit 100 -std=c++11 -o - %s
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void foo() {
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}
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#pragma omp task // expected-error {{unexpected OpenMP directive '#pragma omp task'}}
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class S {
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S(const S &s) { a = s.a + 12; } // expected-note 6 {{implicitly declared private here}}
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int a;
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public:
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S() : a(0) {}
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S(int a) : a(a) {}
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operator int() { return a; }
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S &operator++() { return *this; }
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S operator+(const S &) { return *this; }
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};
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class S1 {
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int a;
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public:
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S1() : a(0) {}
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S1 &operator++() { return *this; }
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S1(const S1 &) = delete; // expected-note 2 {{'S1' has been explicitly marked deleted here}}
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};
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template <class T>
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int foo() {
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T a;
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T &b = a; // expected-note 4 {{'b' defined here}}
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int r;
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S1 s1;
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// expected-error@+1 2 {{call to deleted constructor of 'S1'}}
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#pragma omp task
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// expected-note@+1 2 {{predetermined as a firstprivate in a task construct here}}
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++s1;
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#pragma omp task default(none)
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#pragma omp task default(shared)
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++a;
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#pragma omp task default(none)
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#pragma omp task
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// expected-error@+1 {{calling a private constructor of class 'S'}}
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++a;
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#pragma omp task
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#pragma omp task
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// expected-error@+1 {{calling a private constructor of class 'S'}}
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++a;
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#pragma omp task default(shared)
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#pragma omp task
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++a;
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#pragma omp task
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#pragma omp parallel
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++a;
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// expected-error@+2 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'int &'}}
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// expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'S &'}}
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#pragma omp task
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// expected-note@+1 2 {{used here}}
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++b;
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// expected-error@+2 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'int &'}}
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// expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'S &'}}
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#pragma omp task
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// expected-error@+2 {{calling a private constructor of class 'S'}}
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// expected-note@+1 2 {{used here}}
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#pragma omp parallel shared(a, b)
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++a, ++b;
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// expected-note@+1 3 {{defined as reduction}}
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#pragma omp parallel reduction(+ : r)
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// expected-error@+1 {{argument of a reduction clause of a parallel construct must not appear in a firstprivate clause on a task construct}}
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#pragma omp task firstprivate(r)
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// expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
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++r;
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// expected-note@+1 2 {{defined as reduction}}
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#pragma omp parallel reduction(+ : r)
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#pragma omp task default(shared)
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// expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
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++r;
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// expected-note@+1 2 {{defined as reduction}}
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#pragma omp parallel reduction(+ : r)
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#pragma omp task
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// expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
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++r;
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#pragma omp parallel
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// expected-note@+1 3 {{defined as reduction}}
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#pragma omp for reduction(+ : r)
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for (int i = 0; i < 10; ++i)
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// expected-error@+1 {{argument of a reduction clause of a for construct must not appear in a firstprivate clause on a task construct}}
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#pragma omp task firstprivate(r)
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// expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
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++r;
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#pragma omp parallel
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// expected-note@+1 2 {{defined as reduction}}
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#pragma omp for reduction(+ : r)
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for (int i = 0; i < 10; ++i)
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#pragma omp task default(shared)
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// expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
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++r;
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#pragma omp parallel
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// expected-note@+1 2 {{defined as reduction}}
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#pragma omp for reduction(+ : r)
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for (int i = 0; i < 10; ++i)
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#pragma omp task
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// expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
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++r;
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// expected-note@+1 {{non-shared variable in a task construct is predetermined as firstprivate}}
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#pragma omp task
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// expected-error@+2 {{reduction variable must be shared}}
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// expected-error@+1 {{region cannot be closely nested inside 'task' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
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#pragma omp for reduction(+ : r)
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++r;
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// expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'untied' clause}}
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#pragma omp task untied untied
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++r;
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// expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'mergeable' clause}}
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#pragma omp task mergeable mergeable
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++r;
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return a + b;
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}
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int main(int argc, char **argv) {
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int a;
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int &b = a; // expected-note 2 {{'b' defined here}}
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S sa;
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S &sb = sa; // expected-note 2 {{'sb' defined here}}
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int r;
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#pragma omp task { // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
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foo();
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#pragma omp task( // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
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foo();
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#pragma omp task[ // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
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foo();
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#pragma omp task] // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
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foo();
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#pragma omp task) // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
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foo();
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#pragma omp task } // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
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foo();
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#pragma omp task
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// expected-warning@+1 {{extra tokens at the end of '#pragma omp task' are ignored}}
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#pragma omp task unknown()
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foo();
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L1:
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foo();
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#pragma omp task
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;
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#pragma omp task
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{
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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 task
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{
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foo();
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break; // expected-error {{'break' statement not in loop or switch statement}}
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continue; // expected-error {{'continue' statement not in loop statement}}
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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 task default(none)
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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 task
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L2:
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foo();
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#pragma omp task
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{
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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 task
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for (int n = 0; n < 100; ++n) {
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}
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#pragma omp task default(none)
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#pragma omp task default(shared)
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++a;
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#pragma omp task default(none)
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#pragma omp task
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++a;
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#pragma omp task default(shared)
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#pragma omp task
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++a;
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#pragma omp task
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#pragma omp parallel
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++a;
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// expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'int &'}}
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#pragma omp task
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// expected-note@+1 {{used here}}
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++b;
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// expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'int &'}}
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#pragma omp task
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// expected-note@+1 {{used here}}
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#pragma omp parallel shared(a, b)
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++a, ++b;
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#pragma omp task default(none)
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#pragma omp task default(shared)
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++sa;
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#pragma omp task default(none)
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#pragma omp task
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// expected-error@+1 {{calling a private constructor of class 'S'}}
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++sa;
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#pragma omp task
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#pragma omp task
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// expected-error@+1 {{calling a private constructor of class 'S'}}
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++sa;
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#pragma omp task default(shared)
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#pragma omp task
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++sa;
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#pragma omp task
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#pragma omp parallel
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++sa;
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// expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'S &'}}
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#pragma omp task
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// expected-note@+1 {{used here}}
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++sb;
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// expected-error@+1 {{predetermined as a firstprivate in a task construct variable cannot be of reference type 'S &'}}
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#pragma omp task
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// expected-error@+2 {{calling a private constructor of class 'S'}}
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// expected-note@+1 {{used here}}
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#pragma omp parallel shared(sa, sb)
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++sa, ++sb;
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// expected-note@+1 2 {{defined as reduction}}
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#pragma omp parallel reduction(+ : r)
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// expected-error@+1 {{argument of a reduction clause of a parallel construct must not appear in a firstprivate clause on a task construct}}
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#pragma omp task firstprivate(r)
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// expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
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++r;
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// expected-note@+1 {{defined as reduction}}
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#pragma omp parallel reduction(+ : r)
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#pragma omp task default(shared)
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// expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
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++r;
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// expected-note@+1 {{defined as reduction}}
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#pragma omp parallel reduction(+ : r)
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#pragma omp task
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// expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
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++r;
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#pragma omp parallel
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// expected-note@+1 2 {{defined as reduction}}
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#pragma omp for reduction(+ : r)
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for (int i = 0; i < 10; ++i)
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// expected-error@+1 {{argument of a reduction clause of a for construct must not appear in a firstprivate clause on a task construct}}
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#pragma omp task firstprivate(r)
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// expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
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++r;
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#pragma omp parallel
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// expected-note@+1 {{defined as reduction}}
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#pragma omp for reduction(+ : r)
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for (int i = 0; i < 10; ++i)
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#pragma omp task default(shared)
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// expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
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++r;
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#pragma omp parallel
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// expected-note@+1 {{defined as reduction}}
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#pragma omp for reduction(+ : r)
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for (int i = 0; i < 10; ++i)
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#pragma omp task
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// expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
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++r;
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// expected-note@+1 {{non-shared variable in a task construct is predetermined as firstprivate}}
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#pragma omp task
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// expected-error@+2 {{reduction variable must be shared}}
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// expected-error@+1 {{region cannot be closely nested inside 'task' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
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#pragma omp for reduction(+ : r)
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++r;
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// expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'untied' clause}}
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#pragma omp task untied untied
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++r;
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// expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'mergeable' clause}}
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#pragma omp task mergeable mergeable
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++r;
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// expected-note@+2 {{in instantiation of function template specialization 'foo<int>' requested here}}
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// expected-note@+1 {{in instantiation of function template specialization 'foo<S>' requested here}}
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return foo<int>() + foo<S>();
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}
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