[PATCH] - remove deprecated REG_LIBCALL / REG_RETVAL from sh.md
Thu Aug 19 12:35:00 GMT 2004
> 2004-08-12 Toshiyasu Morita <email@example.com>
> * config/sh/sh.md: Remove deprecated REG_LIBCALL /
> REG_RETVAL NOTES from mul / div insns.
On second thought, this patch is OK.
cse and combine are hindered rather than helped by REG_LIBCALL / REG_RETVAL
The other things we do to make the rtl more intelligible for the
rtl optimizers are still important, though: using sfunc patterns that
show the actual operation code and exact register usage rather than a call,
and tagging on REG_EQUAL notes.
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