On 05/03/2013 09:01 AM, Nick Clifton wrote:
Hi Guys,
I would like to apply the patch below to allow simplify_subreg_regno()
to treat the frame pointer register in the same way as the stack
pointer register when the LRA pass is running. I found that I needed
this whilst trying to enable LRA for the RX and RL78 targets. (LRA is
still not working for these targets, but this patch lets more of
libgcc be built than before).
No regressions noted on an i686-pc-linux-gnu toolchain built with this
patch applied. OK to apply ?
Cheers
Nick
gcc/ChangeLog
2013-05-03 Nick Clifton <ni...@redhat.com>
* rtlanal.c (simplify_subreg_regno): Allow simplification of
SUBREGs involving the frame pointer when running the LRA pass.
Ewwwww.
Before accepting this, I'd like to see more of the rationale behind the
change.
jeff
