Hi, Gentle ping: https://gcc.gnu.org/pipermail/gcc-patches/2022-February/590959.html
BR, Kewen on 2022/2/28 1:37 PM, Kewen.Lin via Gcc-patches wrote: > Hi, > > As PR103196 shows, p9-vec-length-full-7.c needs to be adjusted as the > complete unrolling can happen on some of its loops. This patch is to > use pragma "GCC unroll 0" to disable all possible loop unrollings. > Hope it can help the case not that fragile. > > There are some other p9-vec-length* cases, I noticed that some of them > use either bigger or unknown loop iteration counts, and > "p9-vec-length-3*" have considered the effects of complete unrolling. > So I just leave them alone for now. > > Tested on powerpc64-linux-gnu P8 and powerpc64le-linux-gnu P9 and P10. > > Is it ok for trunk? > > BR, > Kewen > ----- > PR testsuite/103196 > > gcc/testsuite/ChangeLog: > > * gcc.target/powerpc/p9-vec-length-7.h: Add DO_PRAGMA macro. > * gcc.target/powerpc/p9-vec-length-epil-7.c: Use unroll pragma to > disable any unrollings. > * gcc.target/powerpc/p9-vec-length-full-7.c: Remove useless option. > * gcc.target/powerpc/p9-vec-length.h: Likewise.
