[ARC] Various small miscellaneous fixes.
gcc/ 2016-11-04 Claudiu Zissulescu <claziss@synopsys.com> * config/arc/arc.c (arc_process_double_reg_moves): Use gen_dexcl_2op call. * config/arc/arc.md (movsi_insn): Disable unsupported move instructions for ARCv2 cores. (movdi): Use prepare_move_operands. (movsf, movdf): Use move_dest_operand predicate. * config/arc/constraints.md (Chs): Enable when barrel shifter is present. * config/arc/fpu.md (divsf3): Change to divsf3_fpu. * config/arc/fpx.md (dexcl_3op_peep2_insn): Dx data register is also a destination. (dexcl_3op_peep2_insn_nores): Likewise. * config/arc/arc.h (SHIFT_COUNT_TRUNCATED): Define to one. (LINK_COMMAND_SPEC): Remove. From-SVN: r241842
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