strengthen protection against REG_EQUIV/EQUAL on !REG set
Olivier Hainque
hainque@adacore.com
Mon May 26 12:28:00 GMT 2014
Hello,
This is a follow up on a thread started long ago there:
http://gcc.gnu.org/ml/gcc-patches/2010-09/msg00967.html
With a first followup and a patch proposal there:
http://gcc.gnu.org/ml/gcc-patches/2012-04/msg00731.html
Then a refinement suggested by Richard Sandiford here:
http://gcc.gnu.org/ml/gcc-patches/2012-04/msg01515.html
We have been running with the proposed patch for years now,
it still applies on mainline and bootstraps + regtests fine
on x86_64-linux for languages=all,ada.
Ok to commit ?
Thanks in advance,
With Kind Regards,
Olivier
2014-05-26 Richard Sandiford <rdsandiford@googlemail.com>
* rtl.h (set_for_reg_notes): Declare.
* emit-rtl.c (set_for_reg_notes): New function.
(set_unique_reg_note): Use it.
* optabs.c (add_equal_note): Likewise.
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