rtl.h
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simplify_rtx.c (simplify_subreg): Keep subregs on return values... · e0e08ac2
* simplify_rtx.c (simplify_subreg): Keep subregs on return values, check CLASS_CANNOT_CHANGE_MODE before avoiding subreg on hard reg, in case register wasn't OK previously, accept it now; allow subregs of frame pointer if reload completed and frame pointer is not needed. * combine.c (sombine_simplify_rtx): Fix comment; use subreg_lowpart_offset instead of subreg_lowpart_p (gen_lowpart_for_combine): Use subreg_lowpart_offset. * rtl.h (subreg_lowpart_parts_p): Kill. (subreg_lowpart_offset, subreg_highpart_offset): Declare. * simplify-rtx.c (simplify_subreg): Use subreg_lowpart_offset. * emit-rtl.c (gen_lowpart_SUBREG): Use subreg_lowpart_offset; (gen_lowpart_common): Likewise. (subreg_lowpart_p): Likewise. (subreg_lowpart_parts_p): Kill. (subreg_lowpart_offset, subreg_highpart_offset): New function. * emit-rtl.c (gen_lowpart_common): Use simplify_gen_subreg to simplify SUBREG and REG. (gen_highpart): Use simplify_gen_subreg for all simplifications. * emit-rtl.c (gen_realpart, gen_imagpart): Do not handle CONCAT specially. * rtlanal.c (replace_regs): Use simplify_gen_subreg From-SVN: r42850
Jan Hubicka committed