mirror of git://gcc.gnu.org/git/gcc.git
9a06e4d6a1
This patch adds support for the "need_device_addr" modifier to the "adjust args" clause for the "declare variant" directive, and extends/re-works the support for "need_device_ptr" as well. This patch builds on waffl3x's recently posted patch, "OpenMP: C/C++ adjust-args numeric ranges", here. https://gcc.gnu.org/pipermail/gcc-patches/2025-April/681806.html In C++, "need_device_addr" supports mapping reference arguments to device pointers. In Fortran, it similarly supports arguments passed by reference, the default for the language, in contrast to "need_device_ptr" which is used to map arguments of c_ptr type. The C++ support is straightforward, but Fortran has some additional wrinkles involving arrays passed by descriptor (a new descriptor must be constructed with a pointer to the array data which is the only part mapped to the device), plus special cases for passing optional arguments and a whole array instead of a reference to its first element. gcc/cp/ChangeLog * parser.cc (cp_finish_omp_declare_variant): Adjust error messages. gcc/fortran/ChangeLog * trans-openmp.cc (gfc_trans_omp_declare_variant): Disallow polymorphic and optional arguments with need_device_addr for now, but don't reject need_device_addr entirely. gcc/ChangeLog * gimplify.cc (modify_call_for_omp_dispatch): Rework logic for need_device_ptr and need_device_addr adjustments. gcc/testsuite/Changelog * c-c++-common/gomp/adjust-args-10.c: Ignore the new sorry since the lack of proper diagnostic is already xfail'ed. * g++.dg/gomp/adjust-args-1.C: Adjust output patterns. * g++.dg/gomp/adjust-args-17.C: New. * gcc.dg/gomp/adjust-args-3.c: New. * gfortran.dg/gomp/adjust-args-14.f90: Don't expect this to fail now. libgomp/ChangeLog * libgomp.texi: Mark need_device_addr as supported. * testsuite/libgomp.c-c++-common/dispatch-3.c: New. * testsuite/libgomp.c++/need-device-ptr.C: New. * testsuite/libgomp.fortran/adjust-args-array-descriptor.f90: New. * testsuite/libgomp.fortran/need-device-ptr.f90: New. Co-Authored-By: Tobias Burnus <tburnus@baylibre.com> |
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README
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