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* target.def (no_register_allocation): New data hook. * doc/tm.texi.in: Add @hook TARGET_NO_REGISTER_ALLOCATION. * doc/tm.texi: Regenerate. * ira.c (gate_ira): New function. (pass_data_ira): Set has_gate. (pass_ira): Add a gate function. (pass_data_reload): Likewise. (pass_reload): Add a gate function. (pass_ira): Use it. * reload1.c (eliminate_regs): If reg_eliminate_is NULL, assert that no register allocation happens on the target and return. * final.c (alter_subreg): Ensure register is not a pseudo before calling simplify_subreg. (output_operand): Assert that x isn't a pseudo only if doing register allocation. From-SVN: r217122
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