https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83393
Segher Boessenkool changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83393
--- Comment #4 from Segher Boessenkool ---
Author: segher
Date: Wed Dec 13 14:05:57 2017
New Revision: 255606
URL: https://gcc.gnu.org/viewcvs?rev=255606=gcc=rev
Log:
combine: Fix PR83393
In move_deaths we move a REG_DEAD note if the
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83393
--- Comment #3 from Segher Boessenkool ---
In the original code, r108 as set by insn 14 is dead after insn 16. The
combination 15->20 should have changed that, but apparently didn't.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83393
Jakub Jelinek changed:
What|Removed |Added
CC||jakub at gcc dot gnu.org
--- Comment #2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83393
--- Comment #1 from Zdenek Sojka ---
(In reply to Zdenek Sojka from comment #0)
> ... even though insn 16 output (r108) should be used insn 20; ...
s/insn 16/insn 14/
Later, there is:
Trying 18 -> 20:
18: r116:SI=0
20:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83393
Richard Biener changed:
What|Removed |Added
Target Milestone|--- |8.0
