name") and attribute("used")
not emitted
Product: gcc
Version: 3.3.5
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ptimization
Severity: normal
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: falk at debian dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: alphaev68-unknown-linux-gnu
GCC h
--- Additional Comments From falk at debian dot org 2004-11-19 11:29
---
(In reply to comment #3)
> Can we get some numbers to understand how worse we are behaving?
The code size is inflated by a factor of about 3. Run time difference depends
a lot on how many bytes are actually cop
--- Additional Comments From falk at debian dot org 2004-11-19 20:16
---
(In reply to comment #6)
> I expect these would go away with this patch:
> http://gcc.gnu.org/ml/gcc-patches/2004-11/msg01512.html
Not quite. Code looks like this:
f:
and $16,4,$1
mov
ReportedBy: falk at debian dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: alphaev68-unknown-linux-gnu
GCC host triplet: alphaev68-unknown-linux-gnu
GCC target triplet: alphaev68-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18577
--- Additional Comments From falk at debian dot org 2004-11-21 02:33
---
The bug seems to be caused by the loop unroller making a pseudo local
to be able to duplicate it while it is still needed outside of the loop.
Reverting Eric Botcazou's patch for rtl-optimization/11841, whi
--- Additional Comments From falk at debian dot org 2004-11-23 00:39
---
We need the preprocessed source, as generated by -save-temps.
Maybe you could also suggest how we could have made that clearer on the
web page?
--
What|Removed |Added
Keywords: wrong-code
Severity: normal
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: falk at debian dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: alphaev68-unknown-linux-g
--- Additional Comments From falk at debian dot org 2004-11-27 22:53
---
Created an attachment (id=7619)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7619&action=view)
Test case
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18694
--- Additional Comments From falk at debian dot org 2004-11-28 16:00
---
Still present in 3.3, 3.4, and 4.0 branch. Regression from 2.95.
--
What|Removed |Added
ersion: 4.0.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: critical
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: falk at debian dot org
CC: gcc-bug
--- Additional Comments From falk at debian dot org 2004-12-03 09:13
---
Confirmed. I think we should even warn about this unconditionally and not
only with -pedantic.
--
What|Removed |Added
nent: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: falk at debian dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: alphaev68-unknown-linux-gnu
GCC host triplet: alphaev68-unknown-linux-gnu
GCC target triplet: alphaev68-unknown-l
--- Comment #3 from falk at debian dot org 2006-10-22 12:50 ---
This bug is still there in 4.1, but not in mainline.
Janis, can you perhaps do a regression hunt to see what fixed this and whether
it is feasible to backport?
--
falk at debian dot org changed:
What
o extension of signed
short IV
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
--- Comment #2 from falk at debian dot org 2006-10-28 23:13 ---
(In reply to comment #1)
> What happens if you try -O2 -fno-loop-optimize?
No crash then.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29631
--- Comment #5 from falk at debian dot org 2006-10-29 09:57 ---
Zdenek,
do you think this patch (or another fix) can be backported to 4.1?
http://gcc.gnu.org/ml/gcc-patches/2006-01/msg01259.html
--
falk at debian dot org changed:
What|Removed
--- Comment #2 from falk at debian dot org 2006-11-02 13:36 ---
Please attach the .i file as obtained by adding -save-temps. Also, please try a
newer gcc version, the 3.3 branch is dead.
--
falk at debian dot org changed:
What|Removed |Added
--- Comment #3 from falk at debian dot org 2006-11-02 13:40 ---
Confirmed with a native 4.1.2 20061020.
--
falk at debian dot org changed:
What|Removed |Added
Priority: P3
Component: bootstrap
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: falk at debian dot org
GCC build triplet: alphaev68-unknown-linux-gnu
GCC host triplet: alphaev68-unknown-linux-gnu
GCC target triplet: alphaev68-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29889
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