03db9ab594
The attached patch optimizes the atomic_exchange and atomic_compare patterns on s390 and s390x (mostly limited to SImode and DImode). Among general optimizaation, the changes fix most of the problems reported in PR 80080: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80080 gcc/ChangeLog: 2017-04-25 Dominik Vogt <vogt@linux.vnet.ibm.com> PR target/80080 * s390-protos.h (s390_expand_cs_hqi): Removed. (s390_expand_cs, s390_expand_atomic_exchange_tdsi): New prototypes. * config/s390/s390.c (s390_emit_compare_and_swap): Handle all integer modes as well as CCZ1mode and CCZmode. (s390_expand_atomic_exchange_tdsi, s390_expand_atomic): Adapt to new signature of s390_emit_compare_and_swap. (s390_expand_cs_hqi): Likewise, make static. (s390_expand_cs_tdsi): Generate an explicit compare before trying compare-and-swap, in some cases. (s390_expand_cs): Wrapper function. (s390_expand_atomic_exchange_tdsi): New backend specific expander for atomic_exchange. (s390_match_ccmode_set): Allow CCZmode <-> CCZ1 mode. * config/s390/s390.md ("atomic_compare_and_swap<mode>"): Merge the patterns for small and large integers. Forbid symref memory operands. Move expander to s390.c. Require cc register. ("atomic_compare_and_swap<DGPR:mode><CCZZ1:mode>_internal") ("*atomic_compare_and_swap<TDI:mode><CCZZ1:mode>_1") ("*atomic_compare_and_swapdi<CCZZ1:mode>_2") ("*atomic_compare_and_swapsi<CCZZ1:mode>_3"): Use s_operand to forbid symref memory operands. Remove CC mode and call s390_match_ccmode instead. ("atomic_exchange<mode>"): Allow and implement all integer modes. gcc/testsuite/ChangeLog: 2017-04-25 Dominik Vogt <vogt@linux.vnet.ibm.com> PR target/80080 * gcc.target/s390/md/atomic_compare_exchange-1.c: New test. * gcc.target/s390/md/atomic_compare_exchange-1.inc: New test. * gcc.target/s390/md/atomic_exchange-1.inc: New test. From-SVN: r247132 |
||
|---|---|---|
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcilkrts | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libhsail-rt | ||
| libiberty | ||
| libitm | ||
| libmpx | ||
| libobjc | ||
| liboffloadmic | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| ABOUT-NLS | ||
| 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 | ||
| README | ||
| symlink-tree | ||
| 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.