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PR rtl-optimization/29329 * combine.c (replaced_rhs_insn): Rename to i2mod. (replaced_rhs_value): Rename to i2mod_new_rhs. (i2mod_old_rhs): New global variable. (combine_instructions): Adjust for above change. Save a copy of the old RHS into i2mod_old_rhs when the contents of a REG_EQUAL note are substituted in the second instruction. (distribute_notes) <REG_DEAD>: Adjust for above change. Do not ditch the note if it pertains to the second eliminated register and this register is mentioned in i2mod_old_rhs. Revert: 2006-09-12 Eric Botcazou <ebotcazou@libertysurf.fr> * combine.c (distribute_notes) <REG_DEAD>: Do not consider SETs past the insn to which the note was originally attached. From-SVN: r121037
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