[PATCH 2/9] operand_equal_p: add support for FIELD_DECL

[Richard Biener]

On Tue, Aug 6, 2019 at 5:44 PM Martin Liska <mliska@suse.cz> wrote:
>
>
> gcc/ChangeLog:

So I suppose this isn't to call operand_equal_p on two FIELD_DECLs
but to make two COMPONENT_REFs "more equal"?  If so I then
I suggest to make this change "local" to the COMPONENT_REF handling.
This also interacts with path-based disambiguation so you want to make
sure to only make things equal here iff it wouldn't change the outcome
of path-based analysis.  Honza?

Richard.

> 2019-07-24  Martin Liska  <mliska@suse.cz>
>
>         * fold-const.c (operand_equal_p): Support FIELD_DECL
>         as well.
>         * tree.c (add_expr): Hast DECL_FIELD_OFFSET and
>         DECL_FIELD_BIT_OFFSET for FIELD_DECL.
>
> gcc/testsuite/ChangeLog:
>
> 2019-07-24  Martin Liska  <mliska@suse.cz>
>
>         * gcc.dg/vect/vect-35-big-array.c: Vectorize one more loop.
>         * gcc.dg/vect/vect-35.c: Likewise.
>         * gcc.dg/pr70740.c: Move from torture and set -O2.
>         * gfortran.dg/vect/vect-8.f90: Update scanned pattern.
> ---
>  gcc/fold-const.c                              | 34 ++++++++++++++++---
>  gcc/testsuite/gcc.dg/{torture => }/pr70740.c  |  3 +-
>  gcc/testsuite/gcc.dg/vect/vect-35-big-array.c |  3 +-
>  gcc/testsuite/gcc.dg/vect/vect-35.c           |  3 +-
>  gcc/testsuite/gfortran.dg/vect/vect-8.f90     |  2 +-
>  gcc/tree.c                                    |  4 +++
>  6 files changed, 38 insertions(+), 11 deletions(-)
>  rename gcc/testsuite/gcc.dg/{torture => }/pr70740.c (77%)
>