https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87873
--- Comment #7 from Richard Biener ---
Author: rguenth
Date: Mon Nov 5 14:55:53 2018
New Revision: 265812
URL: https://gcc.gnu.org/viewcvs?rev=265812=gcc=rev
Log:
2018-11-05 Richard Biener
PR tree-optimization/87873
*
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87873
Richard Biener changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87873
--- Comment #5 from Richard Biener ---
So the vectorizer issue is highlighted by the following assert. It triggers
because scalar and if-converted loop do not have a 1:1 match in the number of
loop-closed PHIs. And that happens because
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87873
--- Comment #4 from Richard Biener ---
Adding checking code reveals that at least SCCP happily propgates constants
into LC PHI nodes.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87873
--- Comment #3 from Richard Biener ---
The vectorizer is confused by a LC PHI node with a constant argument. That's
indeed sth that usually doesn't happen.
It's simple to avoid this propagation being done but the question is whether
code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87873
Richard Biener changed:
What|Removed |Added
Status|NEW |ASSIGNED
Assignee|unassigned
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87873
Martin Liška changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed|
