arm: expand handling of movmisalign for DImode [PR102125]
DImode is currently handled only for machines with vector modes
enabled, but this is unduly restrictive and is generally better done
in core registers.
gcc/ChangeLog:
PR target/102125
* config/arm/arm.md (movmisaligndi): New define_expand.
* config/arm/vec-common.md (movmisalign<mode>): Iterate over VDQ mode.
rtl: directly handle MEM in gen_highpart [PR102125]
gen_lowpart_general handles forming a lowpart of a MEM by using
adjust_address to rework and validate a new version of the MEM.
Do the same for gen_highpart rather than calling simplify_gen_subreg
for this case.
gcc/ChangeLog:
PR target/102125
* emit-rtl.c (gen_highpart): Use adjust_address to handle
MEM rather than calling simplify_gen_subreg.
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