https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94193
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Segher Boessenkool <seg...@gcc.gnu.org>: https://gcc.gnu.org/g:4343f5e256791a5abaaef29fe1f831a03bab129e commit r12-6848-g4343f5e256791a5abaaef29fe1f831a03bab129e Author: Raoni Fassina Firmino <ra...@linux.ibm.com> Date: Thu Jan 13 14:08:53 2022 -0300 rtl: builtins: (not just) rs6000: Add builtins for fegetround, feclearexcept and feraiseexcept [PR94193] This optimizations were originally in glibc, but was removed and suggested that they were a good fit as gcc builtins[1]. feclearexcept and feraiseexcept were extended (in comparison to the glibc version) to accept any combination of the accepted flags, not limited to just one flag bit at a time anymore. The builtin expanders needs knowledge of the target libc's FE_* values, so they are limited to expand only to suitable libcs. [1] https://sourceware.org/legacy-ml/libc-alpha/2020-03/msg00047.html https://sourceware.org/legacy-ml/libc-alpha/2020-03/msg00080.html 2020-08-13 Raoni Fassina Firmino <ra...@linux.ibm.com> gcc/ PR target/94193 * builtins.cc (expand_builtin_fegetround): New function. (expand_builtin_feclear_feraise_except): New function. (expand_builtin): Add cases for BUILT_IN_FEGETROUND, BUILT_IN_FECLEAREXCEPT and BUILT_IN_FERAISEEXCEPT. * config/rs6000/rs6000.md (fegetroundsi): New pattern. (feclearexceptsi): New Pattern. (feraiseexceptsi): New Pattern. * doc/extend.texi: Add a new introductory paragraph about the new builtins. * doc/md.texi: (fegetround@var{m}): Document new optab. (feclearexcept@var{m}): Document new optab. (feraiseexcept@var{m}): Document new optab. * optabs.def (fegetround_optab): New optab. (feclearexcept_optab): New optab. (feraiseexcept_optab): New optab. gcc/testsuite/ PR target/94193 * gcc.target/powerpc/builtin-feclearexcept-feraiseexcept-1.c: New test. * gcc.target/powerpc/builtin-feclearexcept-feraiseexcept-2.c: New test. * gcc.target/powerpc/builtin-fegetround.c: New test. Signed-off-by: Raoni Fassina Firmino <ra...@linux.ibm.com>
