mirror of
https://github.com/gcc-mirror/gcc.git
synced 2026-05-06 23:25:24 +02:00
962ca7149d
The following conservatively fixes loop distribution to only recognize memset/memcpy and friends when at least one element is going to be processed. This avoids having an unconditional builtin call in the IL that might imply the source and destination pointers are non-NULL when originally pointers were not always dereferenced. With -Os loop header copying is less likely to ensure this. PR tree-optimization/111583 * tree-loop-distribution.cc (find_single_drs): Ensure the load/store are always executed. * gcc.dg/tree-ssa/pr111583-1.c: New testcase. * gcc.dg/tree-ssa/pr111583-2.c: Likewise.
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.