https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
Richard Biener changed:
What|Removed |Added
Status|NEW |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
--- Comment #16 from Andrew Pinski ---
(In reply to Richard Biener from comment #11)
> Created attachment 54503 [details]
> reduced testcase
This reduced testcase looks almost the same as the reduced testcase in bug
108681 comment #4 (when
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
--- Comment #15 from Andrew Pinski ---
(In reply to Richard Biener from comment #12)
> The reduced testcase doesn't fail on the trunk
Most likely because it was fixed when PR 108681 was fixed .
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
Andrew Pinski changed:
What|Removed |Added
See Also||https://gcc.gnu.org/bugzill
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
--- Comment #13 from Andrew Pinski ---
(insn 42 41 43 3 (clobber (reg/v:V4x1DF 40 v8 [orig:96 tup ] [96])) -1
(nil))
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
Richard Biener changed:
What|Removed |Added
Keywords|needs-reduction |
Ever confirmed|0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
--- Comment #11 from Richard Biener ---
Created attachment 54503
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54503=edit
reduced testcase
Reduced testcase (on the GCC 12 branch). Reduced with -O1 and
diff --git a/gcc/dce.cc
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
--- Comment #10 from Richard Biener ---
Confirmed, it never finishes word-level iteration.
static void
fast_dce (bool word_level)
{
...
while (global_changed)
{
...
}
IMHO that "fast" DCE should hard-limit the iteration count
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
--- Comment #9 from Mathieu Malaterre ---
(In reply to Andrew Pinski from comment #3)
> If I get some time next weekend I might reduce this further to understand it.
> There are only 38 BBs in this function too and they are not large either.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
Richard Biener changed:
What|Removed |Added
Target Milestone|12.2|12.3
--- Comment #8 from Richard
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
--- Comment #7 from Jan Wassenberg ---
Sure, added GCC11 .ii. It does indeed still freeze GCC 12.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
--- Comment #6 from Jan Wassenberg ---
Created attachment 53181
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53181=edit
GCC11 zipped preprocessed source
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
--- Comment #5 from Martin Liška ---
(In reply to Jan Wassenberg from comment #4)
> Thanks for having a look! BTW forgot to mention: version 11.0 does not have
> this issue.
Can you please share pre-processed source from GCC 11? And can you
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106041
Richard Biener changed:
What|Removed |Added
Version|12.0|12.1.0
Target Milestone|---
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