On Sep 10, 2019, Alexandre Oliva <ol...@adacore.com> wrote: > This patchset fixes some latent problems in cmpstrn* patterns for x86, > and introduces cmpmemsi for short fixed-size memcmp.
Ping? https://gcc.gnu.org/ml/gcc-patches/2019-09/msg00701.html > Would it make sense to install the test program somewhere? > make cmpstrnsi patterns safer > for gcc/ChangeLog > * config/i386/i386.md (cmpstrnsi): Create separate output > count to pass to cmpstrnqi_nz_1 and ... > (cmpstrnqi_1): ... this. Do not use a match_dup of the count > input as an output. Preserve FLAGS_REG when length is zero. > (*cmpstrnqi_1): Preserve FLAGS_REG when length is zero. > x86 cmpmemsi pattern - single compare > for gcc/ChangeLog > * config/i386/i386.md (cmpmemsi): New pattern. > extend x86 cmpmemsi to use loops > for gcc/ChangeLog > * config/i386/i386.md (cmpmemsi): Expand more than one > fragment compare sequence depending on optimization level. > (subcmpsi3): New expand pattern. -- Alexandre Oliva, freedom fighter he/him https://FSFLA.org/blogs/lxo Be the change, be Free! FSF VP & FSF Latin America board member GNU Toolchain Engineer Free Software Evangelist Hay que enGNUrecerse, pero sin perder la terGNUra jamás - Che GNUevara
