https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100106
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |rsandifo at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
simplify_subreg has
/* If we have a SUBREG of a register that we are replacing and we are
replacing it with a MEM, make a new MEM and try replacing the
SUBREG with it. Don't do this if the MEM has a mode-dependent address
or if we would be widening it. */
if (MEM_P (op)
&& ! mode_dependent_address_p (XEXP (op, 0), MEM_ADDR_SPACE (op))
/* Allow splitting of volatile memory references in case we don't
have instruction to move the whole thing. */
&& (! MEM_VOLATILE_P (op)
|| ! have_insn_for (SET, innermode))
&& known_le (outersize, innersize))
return adjust_address_nv (op, outermode, byte);
at least on STRICT_ALIGN targets I miss an alignment check? The code is
quite old, of course.
