On 08/03/14 08:07, Richard Sandiford wrote:
The switch statement in the old code seemed overly cautious. It's well
established elsewhere that the first operand of an RTX_AUTOINC is the
automodified register. If anyone wanted to add a new code for which that
wasn't true they should (a) reconsider or (b) go through all RTX_AUTOINCs
as a precaution.
gcc/
* emit-rtl.c: Include rtl-iter.h.
(find_auto_inc): Turn from being a for_each_rtx callback to being
a function that examines each subrtx itself. Assume the first operand
to an RTX_AUTOINC is the automodified register.
(try_split): Update call accordingly.
OK.
It seems like we ought to document somewhere that all autoincrement RTXs
increment their first operand. If you can find a goodplace, please add
that little doc update as a pre-approved patch.
jeff
