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* [Bug optimization/15385] New: [3.5 regression] ICE in spill_failure
@ 2004-05-12 17:33 bangerth at dealii dot org
2004-05-12 17:34 ` [Bug optimization/15385] " pinskia at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: bangerth at dealii dot org @ 2004-05-12 17:33 UTC (permalink / raw)
To: gcc-bugs
With this little testcase
----------------------
int foo();
void bar () {
int n = foo();
double d;
if (d==0)
for (int i=0; i<n; ++i)
d = 1.;
}
-----------------------
I get this with mainline:
g/x> /home/bangerth/bin/gcc-3.5-pre/bin/c++ -O2 -funroll-loops -c x.cc
x.cc: In function `void bar()':
x.cc:10: error: unable to find a register to spill in class `AREG'
x.cc:10: error: this is the insn:
(jump_insn:HI 25 24 72 0 (parallel [
(set (pc)
(if_then_else (ne (reg/v:DF 59 [ d ])
(reg:DF 8 st [60]))
(label_ref 69)
(pc)))
(clobber (reg:CCFP 18 fpsr))
(clobber (reg:CCFP 17 flags))
(clobber (scratch:HI))
]) 355 {*fp_jcc_5} (insn_list 24 (nil))
(expr_list:REG_UNUSED (scratch:HI)
(expr_list:REG_UNUSED (reg:CCFP 17 flags)
(expr_list:REG_UNUSED (reg:CCFP 18 fpsr)
(expr_list:REG_DEAD (reg/v:DF 59 [ d ])
(expr_list:REG_DEAD (reg:DF 8 st [60])
(expr_list:REG_UNUSED (scratch:HI)
(expr_list:REG_UNUSED (reg:CCFP 17 flags)
(expr_list:REG_UNUSED (reg:CCFP 18 fpsr)
(expr_list:REG_BR_PROB (const_int 5000 [0x1388])
(nil)))))))))))
x.cc:10: internal compiler error: in spill_failure, at reload1.c:1887
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
That's a regression against 3.4 that didn't ICE. Note that my mainline version is
slightly outdated:
g/x> /home/bangerth/bin/gcc-3.5-pre/bin/c++ -v
Reading specs from /home/bangerth/bin/gcc-3.5-pre/lib/gcc/i686-pc-linux-gnu/3.5.0/specs
Configured with: ../gcc-3.5/configure --prefix=/home/bangerth/bin/gcc-3.5-pre --enable-checking
--enable-languages=c,c++,f77
Thread model: posix
gcc version 3.5.0 20040421 (experimental)
Someone may be able to confirm with a newer version.
W.
--
Summary: [3.5 regression] ICE in spill_failure
Product: gcc
Version: 3.5.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P2
Component: optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bangerth at dealii dot org
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15385
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/15385] [3.5 regression] ICE in spill_failure
2004-05-12 17:33 [Bug optimization/15385] New: [3.5 regression] ICE in spill_failure bangerth at dealii dot org
@ 2004-05-12 17:34 ` pinskia at gcc dot gnu dot org
2004-05-12 17:35 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-05-12 17:34 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-11 20:26 -------
Confirmed, still happens as of today.
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |critical
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Known to fail| |3.5.0 tree-ssa
Known to work| |3.4.0
Last reconfirmed|0000-00-00 00:00:00 |2004-05-11 20:26:55
date| |
Target Milestone|--- |3.5.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15385
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/15385] [3.5 regression] ICE in spill_failure
2004-05-12 17:33 [Bug optimization/15385] New: [3.5 regression] ICE in spill_failure bangerth at dealii dot org
2004-05-12 17:34 ` [Bug optimization/15385] " pinskia at gcc dot gnu dot org
@ 2004-05-12 17:35 ` pinskia at gcc dot gnu dot org
2004-05-13 0:51 ` pinskia at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-05-12 17:35 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-11 20:32 -------
Here is a better example which does not use an uninitailized variable and still ICEs:
int foo();
void bar (double d) {
int n = foo();
if (d==0)
for (int i=0; i<n; ++i)
;
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15385
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/15385] [3.5 regression] ICE in spill_failure
2004-05-12 17:33 [Bug optimization/15385] New: [3.5 regression] ICE in spill_failure bangerth at dealii dot org
2004-05-12 17:34 ` [Bug optimization/15385] " pinskia at gcc dot gnu dot org
2004-05-12 17:35 ` pinskia at gcc dot gnu dot org
@ 2004-05-13 0:51 ` pinskia at gcc dot gnu dot org
2004-05-13 0:52 ` pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-05-13 0:51 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-12 13:07 -------
Here is another sample of what is ICEing (derived from the tree-ssa's tree dump):
int foo();
void bar (double d) {
int i;
int n;
n = foo ();
if (d == 0.0) goto L6; else goto L3;
L6:;
if (n > 0) goto L13; else goto L3;
L13:;
i = 0;
L1:;
i = i + 1;
if (i < n) goto L1; else goto L3;
L3:;
return;
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15385
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/15385] [3.5 regression] ICE in spill_failure
2004-05-12 17:33 [Bug optimization/15385] New: [3.5 regression] ICE in spill_failure bangerth at dealii dot org
` (2 preceding siblings ...)
2004-05-13 0:51 ` pinskia at gcc dot gnu dot org
@ 2004-05-13 0:52 ` pinskia at gcc dot gnu dot org
2004-05-13 11:25 ` pinskia at gcc dot gnu dot org
2004-08-03 6:16 ` [Bug rtl-optimization/15385] " pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-05-13 0:52 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-12 13:10 -------
Also only -O1 -funroll-loops is needed to reproduce the ICE.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15385
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/15385] [3.5 regression] ICE in spill_failure
2004-05-12 17:33 [Bug optimization/15385] New: [3.5 regression] ICE in spill_failure bangerth at dealii dot org
` (3 preceding siblings ...)
2004-05-13 0:52 ` pinskia at gcc dot gnu dot org
@ 2004-05-13 11:25 ` pinskia at gcc dot gnu dot org
2004-08-03 6:16 ` [Bug rtl-optimization/15385] " pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-05-13 11:25 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-12 19:30 -------
*** Bug 15404 has been marked as a duplicate of this bug. ***
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |ludovic dot brenta at
| |insalien dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15385
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug rtl-optimization/15385] [3.5 regression] ICE in spill_failure
2004-05-12 17:33 [Bug optimization/15385] New: [3.5 regression] ICE in spill_failure bangerth at dealii dot org
` (4 preceding siblings ...)
2004-05-13 11:25 ` pinskia at gcc dot gnu dot org
@ 2004-08-03 6:16 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-08-03 6:16 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-08-03 06:16 -------
Fixed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15385
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2004-08-03 6:16 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-05-12 17:33 [Bug optimization/15385] New: [3.5 regression] ICE in spill_failure bangerth at dealii dot org
2004-05-12 17:34 ` [Bug optimization/15385] " pinskia at gcc dot gnu dot org
2004-05-12 17:35 ` pinskia at gcc dot gnu dot org
2004-05-13 0:51 ` pinskia at gcc dot gnu dot org
2004-05-13 0:52 ` pinskia at gcc dot gnu dot org
2004-05-13 11:25 ` pinskia at gcc dot gnu dot org
2004-08-03 6:16 ` [Bug rtl-optimization/15385] " pinskia at gcc dot gnu dot org
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