mirror of
https://forge.sourceware.org/marek/gcc.git
synced 2026-02-22 03:47:02 -05:00
0834dc3a80
There are 3 kinds of widen_mul during the unsigned SAT_MUL pattern, aka * widen_mul directly, like _3 w* _4 * convert and the widen_mul, like (uint64_t)_3 *w (uint64_t)_4 * convert and then mul, like (uint64_t)_3 * (uint64_t)_4 All of them will be referenced during different forms of unsigned SAT_MUL pattern match, but actually we can wrap them into a helper which present the "widening_mul" sematics. With this helper, some unnecessary pattern and duplicated code could be eliminated. The below test suites are passed for this patch: 1. The rv64gcv fully regression tests. 2. The x86 bootstrap tests. 3. The x86 fully regression tests. gcc/ChangeLog: * match.pd: Add usmul_widen_mult helper and referenced by min based unsigned SAT_MUL pattern. Signed-off-by: Pan Li <pan2.li@intel.com>
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.