a42e515e3a
This is a minimal patch to support parsing for "omp assume" directives. These are meant to be hints to a compiler's optimisers: as such, it is legitimate (if not very useful) to ignore them. The patch builds on top of the existing support for "omp assumes" directives (note spelling!). Unlike the "omp [begin/end] assumes" directives, "omp assume" is associated with a compound statement, i.e. it can appear within a function. The "holds" assumption could (theoretically) be mapped onto the existing builtin "__builtin_assume", though the latter applies to a single point in the program, and the former to a range (i.e. the whole of the associated compound statement). This patch fixes sollve's OpenMP 5.1 "omp assume"-based tests.
43 lines
833 B
C++
43 lines
833 B
C++
// RUN: %clang_cc1 -verify -fopenmp -ast-print %s | FileCheck %s
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// RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -emit-pch -o %t %s
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// RUN: %clang_cc1 -fopenmp -std=c++11 -include-pch %t -verify %s -ast-print | FileCheck %s
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// expected-no-diagnostics
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#ifndef HEADER
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#define HEADER
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extern int qux(int);
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template<typename T>
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int foo(T arg)
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{
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#pragma omp assume no_openmp_routines
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{
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auto fn = [](int x) { return qux(x); };
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// CHECK: auto fn = [](int x) {
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return fn(5);
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}
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}
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template<typename T>
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class C {
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T m;
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public:
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T bar(T a);
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};
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// We're really just checking this parses. All the assumptions are thrown
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// away immediately for now.
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template<typename T>
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T C<T>::bar(T a)
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{
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#pragma omp assume holds(sizeof(T) == 8) absent(parallel)
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{
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return (T)qux((int)a);
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// CHECK: return (T)qux((int)a);
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}
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}
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#endif
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