PR target/17990
        * config/i386/i386.c (x86_use_bt): New.
        (ix86_expand_unary_operator): Use MEM_P.
        (ix86_expand_fp_absneg_operator): New.
        * config/i386/i386.h (x86_use_bt): Declare.
        (TARGET_USE_BT): New.
        * config/i386/i386-protos.h: Update.
        * config/i386/i386.md (negsf2): Use ix86_expand_fp_absneg_operator.
        (negdf2, negxf2, abssf2, absdf2, absxf2): Likewise.
        (negsf2_memory, negsf2_ifs, negsf2_if, negdf2_memory, negdf2_ifs,
        negdf2_ifs_rex64, negdf2_if, negdf2_if_rex64, negxf2_if,
        abssf2_memory, abssf2_ifs, abssf2_if, absdf2_memory, absdf2_ifs,
        absdf2_ifs_rex64, absdf2_if, absxf2_if): Remove.
        (absnegsf2_mixed, absnegsf2_sse, absnegsf2_i387, absnegdf2_mixed,
        absnegdf2_sse, absnegdf2_i387, absnegxf2_i387): New.  Merge all
        neg and abs splitters.  Handle DFmode in general regs in 64-bit mode.
        (negextendsfdf2, absextendsfdf2): Disable for non-mixed sse math.
        (btsq, btrq, btcq): New.  Add peepholes as well.
        (movv4sf_internal splitter): Postpone til after reload.
        (movv2di_internal splitter): Likewise.
        * config/i386/predicates.md (const_0_to_63_operand): New.
        (absneg_operator): New.

From-SVN: r92165