mirror of
git://gcc.gnu.org/git/gcc.git
synced 2025-04-16 13:41:01 +08:00
7a3dfc23a9
Hi, Test cases are updated/added, and code is refined as the comments in the review for previous version: https://gcc.gnu.org/pipermail/gcc-patches/2022-September/600768.html As mentioned in PR106550, since pli could support 34bits immediate, we could use less instructions(3insn would be ok) to build 64bits constant with pli. For example, for constant 0x020805006106003, we could generate it with: asm code1: pli 9,101736451 (0x6106003) sldi 9,9,32 paddi 9,9, 2130000 (0x0208050) or asm code2: pli 10, 2130000 pli 9, 101736451 rldimi 9, 10, 32, 0 The asm code2 would be better. This patch generates the asm code2 in split1 pass, this patch also supports to generate asm code1 when splitter is only after RA. This patch pass boostrap and regtest on ppc64. P10 testing is running. Thanks for any comments! BR, Jeff(Jiufu) PR target/106550 gcc/ChangeLog: * config/rs6000/rs6000.cc (rs6000_emit_set_long_const): Use pli. gcc/testsuite/ChangeLog: * gcc.target/powerpc/pr106550.c: New test. * gcc.target/powerpc/pr106550_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.