--- Comment #23 from rguenth at gcc dot gnu dot org 2008-02-08 21:29
---
Now that we have a testcase.
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rguenth at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #22 from ubizjak at gmail dot com 2008-02-08 21:17 ---
Created an attachment (id=15119)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15119&action=view)
Executable test that shows the failure.
This is the test that shows the inliner failure:
[EMAIL PROTECTED] ~]$ gcc
--- Comment #21 from ubizjak at gmail dot com 2008-02-08 20:25 ---
Following patch that forces inlining of normalize breaks normal bootstrap in
exactly the same way, so it looks that there is something wrong with inliner.
Index: real.c
===
--- Comment #20 from ubizjak at gmail dot com 2008-02-08 20:15 ---
(In reply to comment #19)
> So, what upsets gcc's inliner/profiler/whatever to drop the call?
Correction, normalize() gets inlined together with lshift_significand(), but
there is something wrong with inlined version. A
--- Comment #19 from ubizjak at gmail dot com 2008-02-08 14:21 ---
The core of the problem is, that for profiled bootstrap, the call to
normalize() from do_multiply() is simply gone. Gone in the sense, that
normalize() is neither inlined at the call site, neither is called in
do_multiply
--- Comment #18 from ubizjak at gmail dot com 2008-02-07 20:47 ---
(In reply to comment #17)
> P2 - this should not block the release (it's not that profiledbootstrap was
> never
> broken in released compilers). It's also hard to analyze (no, I'm not on it,
> volunteers welcome).
It lo
--- Comment #17 from rguenth at gcc dot gnu dot org 2008-02-06 20:51
---
P2 - this should not block the release (it's not that profiledbootstrap was
never
broken in released compilers). It's also hard to analyze (no, I'm not on it,
volunteers welcome).
--
rguenth at gcc dot gnu dot
--- Comment #16 from rguenth at gcc dot gnu dot org 2008-02-06 11:19
---
Just re-building real.o with removing the real.gc* files before fixes the bug,
so to trigger this bug you indeed need the profile-feedback.
-O2 -fbranch-probabilities -finline-functions is enough to trigger the fa
--- Comment #15 from rguenth at gcc dot gnu dot org 2008-02-06 09:59
---
profiledbootstrap on x86_64 fails for me with
checking for x86_64-unknown-linux-gnu-gcc... /space/rguenther/obj/./gcc/xgcc
-B/space/rguenther/obj/./gcc/ -B/usr/local/x86_64-unknown-linux-gnu/bin/
-B/usr/local/x86_
--- Comment #14 from rguenth at gcc dot gnu dot org 2008-02-06 09:28
---
Err well. Adjusted the summary to something more descriptive, marked as
a regression (4.2 did profiledbootstrap ok).
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rguenth at gcc dot gnu dot org changed:
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