http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48141
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-26 09:20:36 UTC --- Author: jakub Date: Sat Mar 26 09:20:34 2011 New Revision: 171546 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=171546 Log: Backport from mainline 2011-03-17 Jakub Jelinek <ja...@redhat.com> PR rtl-optimization/48141 * params.def (PARAM_MAX_DSE_ACTIVE_LOCAL_STORES): New. * dse.c: Include params.h. (active_local_stores_len): New variable. (add_wild_read, dse_step1): Clear it when setting active_local_stores to NULL. (record_store, check_mem_read_rtx): Decrease it when removing from the chain. (scan_insn): Likewise. Increase it when adding to chain, if it reaches PARAM_MAX_DSE_ACTIVE_LOCAL_STORES limit, set to 1 and set active_local_stores to NULL before the addition. * Makefile.in (dse.o): Depend on $(PARAMS_H). Modified: branches/gcc-4_6-branch/gcc/ChangeLog branches/gcc-4_6-branch/gcc/Makefile.in branches/gcc-4_6-branch/gcc/dse.c branches/gcc-4_6-branch/gcc/params.def
