hi,
  This patch is try to fix the issue https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107190, 
would you like to give me some suggestion, thanks.

~/source/gccUpstreamDir/gcc/testsuite(cfg) » git format-patch -1 --start-number=00 HEAD -o ~/patch
/home/zhongyunde/patch/0000-PHIOPT-Add-A-B-CST-B-match-and-simplify-optimization.patch