1949d7540a
Library code, especially in headers, sometimes needs to know how the compiler interprets / optimizes floating-point types and operations. This information can be used for additional optimizations or for ensuring correctness. This change makes -freciprocal-math, -fno-signed-zeros, -fno-trapping-math, -fassociative-math, and -frounding-math report their state via corresponding pre-defined macros. Signed-off-by: Matthias Kretz <m.kretz@gsi.de> gcc/testsuite/ChangeLog: * gcc.dg/associative-math-1.c: New test. * gcc.dg/associative-math-2.c: New test. * gcc.dg/no-signed-zeros-1.c: New test. * gcc.dg/no-signed-zeros-2.c: New test. * gcc.dg/no-trapping-math-1.c: New test. * gcc.dg/no-trapping-math-2.c: New test. * gcc.dg/reciprocal-math-1.c: New test. * gcc.dg/reciprocal-math-2.c: New test. * gcc.dg/rounding-math-1.c: New test. * gcc.dg/rounding-math-2.c: New test. gcc/c-family/ChangeLog: * c-cppbuiltin.c (c_cpp_builtins_optimize_pragma): Define or undefine __RECIPROCAL_MATH__, __NO_SIGNED_ZEROS__, __NO_TRAPPING_MATH__, __ASSOCIATIVE_MATH__, and __ROUNDING_MATH__ according to the new optimization flags. gcc/ChangeLog: * cppbuiltin.c (define_builtin_macros_for_compilation_flags): Define __RECIPROCAL_MATH__, __NO_SIGNED_ZEROS__, __NO_TRAPPING_MATH__, __ASSOCIATIVE_MATH__, and __ROUNDING_MATH__ according to their corresponding flags. * doc/cpp.texi: Document __RECIPROCAL_MATH__, __NO_SIGNED_ZEROS__, __NO_TRAPPING_MATH__, __ASSOCIATIVE_MATH__, and __ROUNDING_MATH__. |
||
|---|---|---|
| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| 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 | ||
| 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 | ||
| symlink-tree | ||
| 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.