7d6da11fce
The following patch implements what I've been talking about earlier, honor that for explicit num_teams clause we create at least the lower-bound (if not specified, upper-bound) teams in the league. For host fallback, it still means we only have one thread doing all the teams, sequentially one after another. For PTX and GCN, I think the new teams-2.c test and maybe teams-4.c too will or might fail. For these offloads, I think it is ok to remove symbols no longer used from libgomp.a. If num_teams_lower is bigger than the provided num_blocks or num_workgroups, we should arrange for gomp_num_teams_var to be num_teams_lower - 1, stop using the %ctaid.x or __builtin_gcn_dim_pos (0) for omp_get_team_num () and instead use for it some .shared var that GOMP_teams4 initializes to %ctaid.x or __builtin_gcn_dim_pos (0) when first and for !first increment that by num_blocks or num_workgroups each time and only return false when we are above num_teams_lower. Any help with actually implementing this for the 2 architectures highly appreciated. 2021-11-12 Jakub Jelinek <jakub@redhat.com> gcc/ * omp-builtins.def (BUILT_IN_GOMP_TEAMS): Remove. (BUILT_IN_GOMP_TEAMS4): New. * builtin-types.def (BT_FN_VOID_UINT_UINT): Remove. (BT_FN_BOOL_UINT_UINT_UINT_BOOL): New. * omp-low.c (lower_omp_teams): Use GOMP_teams4 instead of GOMP_teams, pass to it also num_teams lower-bound expression or a dup of upper-bound if it is missing and a flag whether it is the first call or not. gcc/fortran/ * types.def (BT_FN_VOID_UINT_UINT): Remove. (BT_FN_BOOL_UINT_UINT_UINT_BOOL): New. libgomp/ * libgomp_g.h (GOMP_teams4): Declare. * libgomp.map (GOMP_5.1): Export GOMP_teams4. * target.c (GOMP_teams4): New function. * config/nvptx/target.c (GOMP_teams): Remove. (GOMP_teams4): New function. * config/gcn/target.c (GOMP_teams): Remove. (GOMP_teams4): New function. * testsuite/libgomp.c/teams-4.c (main): Expect exactly 2 teams instead of <= 2. * testsuite/libgomp.c-c++-common/teams-2.c: New test. |
||
|---|---|---|
| INSTALL | ||
| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcody | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| liboffloadmic | ||
| libphobos | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| ABOUT-NLS | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| ChangeLog.tree-ssa | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| README | ||
| ar-lib | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| multilib.am | ||
| symlink-tree | ||
| test-driver | ||
| ylwrap | ||
README
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.