Hi, Gentle ping this:
https://gcc.gnu.org/pipermail/gcc-patches/2021-May/569792.html BR, Kewen on 2021/5/7 上午10:30, Kewen.Lin via Gcc-patches wrote: > Hi, > > For some cases that when we load unsigned char/short values from > the appropriate unsigned char/short memories and convert them to > double/single precision floating point value, there would be > implicit conversions to int first. It makes GCC not leverage the > P9 instructions lxsibzx/lxsihzx. This patch is to add the related > define_insn_and_split to support this kind of scenario. > > Bootstrapped/regtested on powerpc64le-linux-gnu P9 and > powerpc64-linux-gnu P8. > > Is it ok for trunk? > > BR, > Kewen > ------ > gcc/ChangeLog: > > * config/rs6000/rs6000.md > (floatsi<SFDF:mode>2_lfiwax_<QHI:mode>_mem_zext): New > define_insn_and_split. > > gcc/testsuite/ChangeLog: > > * gcc.target/powerpc/p9-fpcvt-3.c: New test. >
