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PR target/50358 * config/avr/predicates.md (const_1_to_6_operand): New predicate. * config/avr/avr.md: (extend_s): New code attribute. (mul_r_d): New code attribute. (*maddqihi4, *umaddqihi4): New insns. (*msubqihi4, *umsubqihi4): New insns. (*usmaddqihi4, *sumaddqihi4): New insns. (*usmsubqihi4, *susubdqihi4): New insns. (*umaddqihi4.uconst, *maddqihi4.sconst): New insn-and-splits. (*umsubqihi4.uconst, *msubqihi4.sconst): New insn-and-splits. (*umsubqihi4.uconst.ashift): New insn-and-split. (*msubqihi4.sconst.ashift): New insn-and-split. (*sumaddqihi4.uconst): New insn-and-split. (*sumsubqihi4.uconst): New insn-and-split. * config/avr/avr.c (avr_rtx_costs): Report costs of above in case PLUS:HI and MINUS:HI. From-SVN: r178806
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