f4fde1b378
Several SVE patterns need define_insn_and_splits that generate the same insn_code, but with different operands. That's probably a niche requirement, but it's cropping up often enough on the ACLE branch that I think it would be good to have a syntactic sugar for it. This patch therefore adds a new construct called define_insn_and_rewrite. It's basically a define_insn_and_split with an implicit split pattern, obtained by copying the insn pattern and replacing match_operands with match_dups and match_operators with match_op_dups. 2019-05-31 Richard Sandiford <richard.sandiford@arm.com> gcc/ * doc/md.texi: Document define_insn_and_rewrite. * rtl.def (DEFINE_INSN_AND_REWRITE): New rtx code. * gensupport.c (queue_elem): Update comment. (replace_operands_with_dups): New function. (gen_rewrite_sequence): Likewise. (process_rtx): Handle DEFINE_INSN_AND_REWRITE. * read-rtl.c (apply_subst_iterator): Likewise. (add_condition_to_rtx, named_rtx_p): Likewise. (rtx_reader::read_rtx_operand): Likewise. * config/aarch64/aarch64-sve.md (while_ult<GPI:mode><PRED_ALL:mode>_cc): Rename to... (*while_ult<GPI:mode><PRED_ALL:mode>_cc): ...this and use define_insn_and_rewrite. (*cond_<optab><mode>_any): Turn into define_insn_and_rewrites. Remove separate define_split. From-SVN: r271815 |
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| config | ||
| contrib | ||
| fixincludes | ||
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| libgo | ||
| libgomp | ||
| libhsail-rt | ||
| libiberty | ||
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