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Continuing the cleanups of libgcc soft-fp configuration for powerpc*-*-linux* in preparation for implementing TARGET_ATOMIC_ASSIGN_EXPAND_FENV for soft-float and e500, this patch optimizes the choice of which functions to build for the 32-bit classic hard-float and soft-float cases. (e500 will be dealt with in a separate patch which will need to add new features to t-hardfp and t-softfp; this patch keeps the status quo for e500.) For hard-float, while the functions in question are part of the libgcc ABI there is no need for them to contain software floating point code: no newly built code should use them, and if anything does use them it's most efficient (space and speed) for them to pass straight through to floating-point hardware instructions; this case is made to use t-hardfp to achieve that. For soft-float, direct use of soft-fp functions for operations involving DImode or unsigned integers is more efficient than using the libgcc2.c versions of those operations to convert to operations on other types (which then end up calling soft-fp functions for those other types, possibly more than once); this case is thus stopped from using t-softfp-excl. (A future patch will stop the e500 cases from using t-softfp-excl as well.) Tested with no regressions for crosses to powerpc-linux-gnu (soft float and classic hard float); also checked that the same set of symbols and versions is exported from shared libgcc before and after the patch. * configure.ac (ppc_fp_type): Set variable on powerpc*-*-linux*. * configure: Regenerate. * config.host (powerpc*-*-linux*): Use $ppc_fp_type to determine additions to tmake_file. Use t-hardfp-sfdf and t-hardfp instead of soft-fp for 32-bit classic hard float. Do not use t-softfp-excl for soft float. From-SVN: r216687 |
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| boehm-gc | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcilkrts | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libiberty | ||
| libitm | ||
| libjava | ||
| libobjc | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitignore | ||
| ABOUT-NLS | ||
| ChangeLog | ||
| 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 | ||
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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.