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Pattern explosing and manual mode checks can be avoided by using int_nonimmediate_operand special predicate. While there, rewrite *x86_mov<SWI48:mode>cc_0_m1_neg_leu<SWI:mode> to a combine pass splitter. * config/i386/i386.md (*testqi_ext_3): Use int_nonimmediate_operand instead of manual mode checks. (*x86_mov<SWI48:mode>cc_0_m1_neg_leu<SWI:mode>): Use int_nonimmediate_operand predicate. Rewrite define_insn_and_split pattern to a combine pass splitter.
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