5f29f3d5dd
This is a patch that introduces the aarch64-autovec-preference that can take values from 0 - 4, 0 being the default. It can be used to override the autovectorisation preferences in the backend: 0 - use default scheme 1 - only use Advanced SIMD 2 - only use SVE 3 - use Advanced SIMD and SVE, prefer Advanced SIMD in the event of a tie (as determined by costs) 4 - use Advanced SIMD and SVE, prefer SVE in the event of a tie (as determined by costs) It can valuable for experimentation when comparing SVE and Advanced SIMD autovectorisation strategies. It achieves this adjusting the order of the interleaved SVE and Advanced SIMD modes in aarch64_autovectorize_vector_modes. It also adjusts aarch64_preferred_simd_mode to use the new comparison function to pick Advanced SIMD or SVE to start with. Bootstrapped and tested on aarch64-none-linux-gnu. gcc/ * config/aarch64/aarch64.opt (-param=aarch64-autovec-preference): Define. * config/aarch64/aarch64.c (aarch64_override_options_internal): Set aarch64_sve_compare_costs to 0 when preferring only Advanced SIMD. (aarch64_cmp_autovec_modes): Define. (aarch64_preferred_simd_mode): Adjust to use the above. (aarch64_autovectorize_vector_modes): Likewise. * doc/invoke.texi: Document aarch64-autovec-preference param. |
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| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libhsail-rt | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| liboffloadmic | ||
| libphobos | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| ABOUT-NLS | ||
| ar-lib | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| ChangeLog.tree-ssa | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| COPYING | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| lt~obsolete.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| multilib.am | ||
| README | ||
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| test-driver | ||
| ylwrap | ||
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.