mirror of
git://gcc.gnu.org/git/gcc.git
synced 2025-03-24 14:40:53 +08:00
cc558e2801
Add a strncmp test for the cmpstrn pattern with neither of the strings is a constant string. We can expand the cmpstrn pattern to "repz cmpsb" only if one of the strings is a constant so that expand_builtin_strncmp() can write the length argument to be the minimum of the const string length and the actual length argument. Otherwise, "repz cmpsb" may pass the 0 byte. * gcc.target/i386/strncmp-1.c: New test.
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.