Hi!
On Sat, Mar 25, 2017 at 07:45:53AM +0100, Jakub Jelinek wrote:
On Fri, Mar 24, 2017 at 06:37:46PM -0500, Segher Boessenkool wrote:
On Fri, Mar 24, 2017 at 08:36:16PM +0100, Jakub Jelinek wrote:
+ /* Skip over reg notes not related to CFI information. */
+ while (n1)
+ {
+ for (i = 0; i < ARRAY_SIZE (cfa_note_kinds) - 1; i++)
+ if (REG_NOTE_KIND (n1) == cfa_note_kinds[i])
+ break;
+ if (i != ARRAY_SIZE (cfa_note_kinds))
+ break;
+ n1 = XEXP (n1, 1);
+ }
Maybe factor out reg_note_is_cfa_note and/or insns_have_identical_cfa_notes
functions?
Well, for the reg_note_is_cfa_note, actually it might be better to just
have a const bool array indexed by the note enum instead of the loop, I'll
implement it later. And yes, I can outline insns_have_identical_cfa_notes.
Here is updated patch that does that, bootstrapped/regtested on
powerpc64le-linux, ok for trunk?
2017-03-26 Jakub Jelinek <jakub@redhat.com>
PR target/80102
* reg-notes.def (REG_CFA_NOTE): Define. Use it for CFA related
notes.
* cfgcleanup.c (reg_note_cfa_p): New array.
(insns_have_identical_cfa_notes): New function.
(old_insns_match_p): Don't cross-jump in between /f
and non-/f instructions. If both i1 and i2 are frame related,
verify all CFA notes, their order and content.
* g++.dg/opt/pr80102.C: New test.