https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83424
--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> --- Author: segher Date: Tue Jan 16 16:20:10 2018 New Revision: 256750 URL: https://gcc.gnu.org/viewcvs?rev=256750&root=gcc&view=rev Log: rtlanal: dead_or_set_regno_p should handle CLOBBER (PR83424) In PR83424 combine's move_deaths puts a REG_DEAD note in the wrong place because dead_or_set_regno_p does not account for CLOBBER insns. This fixes it. PR rtl-optimization/83424 * rtlanal.c (dead_or_set_regno_p): Handle CLOBBER just like SET. gcc/testsuite/ PR rtl-optimization/83424 * gcc.dg/pr83424.c: New testsuite. Added: branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr83424.c Modified: branches/gcc-7-branch/gcc/ChangeLog branches/gcc-7-branch/gcc/rtlanal.c branches/gcc-7-branch/gcc/testsuite/ChangeLog
