2011-09-08 Enkovich Ilya <ilya.enkovich@intel.com> * config/i386/i386-protos.h (ix86_lea_outperforms): New. (ix86_avoid_lea_for_add): Likewise. (ix86_avoid_lea_for_addr): Likewise. (ix86_split_lea_for_addr): Likewise. * config/i386/i386.c (LEA_MAX_STALL): New. (increase_distance): Likewise. (insn_defines_reg): Likewise. (insn_uses_reg_mem): Likewise. (distance_non_agu_define_in_bb): Likewise. (distance_agu_use_in_bb): Likewise. (ix86_lea_outperforms): Likewise. (ix86_ok_to_clobber_flags): Likewise. (ix86_avoid_lea_for_add): Likewise. (ix86_avoid_lea_for_addr): Likewise. (ix86_split_lea_for_addr): Likewise. (distance_non_agu_define): Search in pred BBs added. (distance_agu_use): Search in succ BBs added. (IX86_LEA_PRIORITY): Value changed from 2 to 0. (LEA_SEARCH_THRESHOLD): Now depends on LEA_MAX_STALL. (ix86_lea_for_add_ok): Use ix86_lea_outperforms to make decision. * config/i386/i386.md: Split added to transform non destructive add into move and add. (lea_1): transformed into insn_and_split to avoid AGU stalls. (lea<mode>_2): Likewise. From-SVN: r178689
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