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* [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
@ 2005-10-06 8:39 rguenth at gcc dot gnu dot org
2005-10-06 8:40 ` [Bug tree-optimization/24226] " rguenth at gcc dot gnu dot org
` (10 more replies)
0 siblings, 11 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2005-10-06 8:39 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 3280 bytes --]
/usr/lib/gcc/i586-suse-linux/4.1.0/cc1 -fpreprocessed disasm.i -quiet -dumpbase
disasm.c -march=i586 -mtune=i686 -auxbase-strip disasm.o -O2 -Wall -Wall
-pedantic -std=c99 -version -fmessage-length=0 -fno-strict-aliasing -o disasm.s
disasm.c: In function disasm:
disasm.c:579: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.suse.de/feedback> for instructions.
#0 0x082c9862 in operand_equal_p (arg0=0x40437c98, arg1=0x404441a0, flags=0)
at fold-const.c:2413
#1 0x0817ab10 in simplify_replace_tree (expr=0x40437c98, old=0x404441a0,
new=0x4031ce28) at tree-ssa-loop-niter.c:605
#2 0x0817ac46 in simplify_replace_tree (expr=0x4050ecf0, old=0x404441a0,
new=0x4031ce28) at tree-ssa-loop-niter.c:616
#3 0x0817ac46 in simplify_replace_tree (expr=0x4050f2c0, old=0x404441a0,
new=0x4031ce28) at tree-ssa-loop-niter.c:616
#4 0x081803f2 in substitute_in_loop_info (loop=0x89e6548, name=0x404441a0,
val=0x4031ce28) at tree-ssa-loop-niter.c:2053
#5 0x080e5e0e in replace_uses_by (name=0x404441a0, val=0x4031ce28)
at tree-cfg.c:1293
#6 0x080e66e5 in tree_merge_blocks (a=0x40480820, b=0x404ce870)
at tree-cfg.c:1341
#7 0x08524467 in merge_blocks (a=0x40480820, b=0x404ce870) at cfghooks.c:530
#8 0x081f39de in merge_seq_blocks () at cfgcleanup.c:2064
#9 0x0854a62a in cleanup_tree_cfg_1 () at tree-cfgcleanup.c:520
#10 0x0854a660 in cleanup_tree_cfg () at tree-cfgcleanup.c:541
#11 0x0854a6b6 in cleanup_tree_cfg_loop () at tree-cfgcleanup.c:564
#12 0x08198cee in tree_unroll_loops_completely (loops=0x885b9e8,
may_increase_size=0 '\0') at tree-ssa-loop-ivcanon.c:391
#13 0x081797f9 in tree_complete_unroll () at tree-ssa-loop.c:376
#14 0x0852f0cd in execute_one_pass (pass=0x87752c0) at passes.c:827
/* If both types don't have the same signedness, then we can't consider
them equal. We must check this before the STRIP_NOPS calls
because they may change the signedness of the arguments. */
if (TYPE_UNSIGNED (TREE_TYPE (arg0)) != TYPE_UNSIGNED (TREE_TYPE (arg1)))
return 0;
(gdb) call debug_tree(arg0)
<ssa_name 0x40437c98 nothrow var <var_decl 0x403325d8 D.3500> def_stmt
<ssa_name 0x40437b94>
version 246 in-free-list>
(gdb) call debug_tree(arg1)
<ssa_name 0x404441a0
type <integer_type 0x4019d2e0 unsigned int sizes-gimplified public unsigned
SI
size <integer_cst 0x4018d408 constant invariant 32>
unit size <integer_cst 0x4018d198 constant invariant 4>
align 32 symtab 0 alias set -1 precision 32 min <integer_cst 0x4018d480
0> max <integer_cst 0x4018d468 4294967295>>
var <var_decl 0x40508688 ivtmp.485> def_stmt <phi_node 0x403e7b00>
version 1050>
we have a DEF_STMT in arg0. Ugh.
--
Summary: [4.1 Regression] ICE: Segmentation fault in
operand_equal_p (complete loop unrolling)
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rguenth at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
@ 2005-10-06 8:40 ` rguenth at gcc dot gnu dot org
2005-10-06 11:28 ` rguenth at gcc dot gnu dot org
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2005-10-06 8:40 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2005-10-06 08:40 -------
Created an attachment (id=9901)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9901&action=view)
testcase
Preprocessed testcase.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
2005-10-06 8:40 ` [Bug tree-optimization/24226] " rguenth at gcc dot gnu dot org
@ 2005-10-06 11:28 ` rguenth at gcc dot gnu dot org
2005-10-06 11:43 ` rguenth at gcc dot gnu dot org
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2005-10-06 11:28 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2005-10-06 11:28 -------
Reducing.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
` (2 preceding siblings ...)
2005-10-06 11:43 ` rguenth at gcc dot gnu dot org
@ 2005-10-06 11:43 ` rguenth at gcc dot gnu dot org
2005-10-06 13:41 ` pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2005-10-06 11:43 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from rguenth at gcc dot gnu dot org 2005-10-06 11:43 -------
Created an attachment (id=9910)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9910&action=view)
reduced testcase
Reduced testcase.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
2005-10-06 8:40 ` [Bug tree-optimization/24226] " rguenth at gcc dot gnu dot org
2005-10-06 11:28 ` rguenth at gcc dot gnu dot org
@ 2005-10-06 11:43 ` rguenth at gcc dot gnu dot org
2005-10-06 11:43 ` rguenth at gcc dot gnu dot org
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2005-10-06 11:43 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2005-10-06 11:43:16
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
` (3 preceding siblings ...)
2005-10-06 11:43 ` rguenth at gcc dot gnu dot org
@ 2005-10-06 13:41 ` pinskia at gcc dot gnu dot org
2005-10-06 15:19 ` belyshev at depni dot sinp dot msu dot ru
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-10-06 13:41 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from pinskia at gcc dot gnu dot org 2005-10-06 13:40 -------
Confirmed, reduced testcase:
typedef struct {
int basereg, indexreg, scale;
long segment;
long offset;
} operand;
typedef struct extop {
operand oprs[3];
} insn;
enum { I_CMOVcc, I_Jcc, I_SETcc };
struct itemplate {
int opcode;
int operands;
long opd[3];
const char *code;
};
static int ico[] = {
I_CMOVcc, I_Jcc, I_SETcc
};
static int matches(struct itemplate *t, unsigned char *data, int asize,
int osize, int segsize, int rep, insn * ins)
{
unsigned char *r = (unsigned char *)(t->code);
unsigned char *origdata = data;
while (*r) {
int c = *r++;
if (c >= 01 && c <= 03) {
switch (*data++) {
case 0x1F:
return 0;
}
}
if (c == 05) {
switch (*data++) {
case 0x06:
ins->oprs[0].basereg = 1;
}
}
if (c == 07)
data++;
if (c >= 010 && c <= 012)
data++;
if (c == 017)
data++;
if (c >= 014 && c <= 016)
data++;
if (c >= 020 && c <= 022)
data++;
if (c >= 024 && c <= 026)
data++;
if (c >= 030 && c <= 032)
data++;
if (c >= 034 && c <= 036)
data++;
if (c >= 040 && c <= 042)
data++;
if (c >= 044 && c <= 046)
data++;
if (c >= 050 && c <= 052)
data++;
if (c >= 060 && c <= 062)
data++;
if (c >= 064 && c <= 066)
data++;
if (c >= 070 && c <= 072)
data++;
if (c >= 0100 && c < 0130)
data++;
if (c >= 0130 && c <= 0132)
data++;
if (c >= 0140 && c <= 0142)
data++;
if (c >= 0200 && c <= 0277)
data++;
}
return data - origdata;
}
void disasm(unsigned char *data, char *output, int outbufsize, int segsize,
long offset, int autosync, unsigned long prefer)
{
struct itemplate **p, **best_p;
int length, best_length = 0;
int rep, lock, asize, osize, i, slen, colon;
insn tmp_ins, ins;
for (; *p; p++)
if ((length = matches(*p, data, asize, osize, segsize, rep, &tmp_ins)))
for (i = 0; i < (*p)->operands; i++)
if (tmp_ins.oprs[i].segment & 4)
break;
for (i = 0; i < ( sizeof(ico) / sizeof(*(ico)) ); i++)
if ((*p)->opcode == ico[i])
break;
}
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.1.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
` (4 preceding siblings ...)
2005-10-06 13:41 ` pinskia at gcc dot gnu dot org
@ 2005-10-06 15:19 ` belyshev at depni dot sinp dot msu dot ru
2005-10-06 22:27 ` janis187 at us dot ibm dot com
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: belyshev at depni dot sinp dot msu dot ru @ 2005-10-06 15:19 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from belyshev at depni dot sinp dot msu dot ru 2005-10-06 15:19 -------
// a bit smaller test, compile with -O1:
typedef struct
{
int b, s;
} op;
int *ico [3];
static int bar (char *d)
{
long o = d;
switch (*d)
{
case 0x1F : return 0 ;
}
return d - o;
}
void f (long d, int *p, op ops [3], int i)
{
if (bar (d))
for (; i < *p; i ++)
if (ops [i].s && ops [i].b)
break;
for (i = 0 ; i < 3; i ++)
if (p == ico [i])
break;
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
` (5 preceding siblings ...)
2005-10-06 15:19 ` belyshev at depni dot sinp dot msu dot ru
@ 2005-10-06 22:27 ` janis187 at us dot ibm dot com
2005-10-09 9:04 ` rakdver at gcc dot gnu dot org
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: janis187 at us dot ibm dot com @ 2005-10-06 22:27 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from janis187 at us dot ibm dot com 2005-10-06 22:27 -------
A regression hunt on powerpc-linux using the testcase from comment #5
identified this patch from rakdver@gcc.gnu.org:
http://gcc.gnu.org/ml/gcc-cvs/2005-06/msg00210.html
--
janis187 at us dot ibm dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rakdver at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
` (6 preceding siblings ...)
2005-10-06 22:27 ` janis187 at us dot ibm dot com
@ 2005-10-09 9:04 ` rakdver at gcc dot gnu dot org
2005-10-09 19:38 ` rakdver at gcc dot gnu dot org
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rakdver at gcc dot gnu dot org @ 2005-10-09 9:04 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from rakdver at gcc dot gnu dot org 2005-10-09 09:03 -------
Testing a patch.
--
rakdver at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rakdver at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
` (7 preceding siblings ...)
2005-10-09 9:04 ` rakdver at gcc dot gnu dot org
@ 2005-10-09 19:38 ` rakdver at gcc dot gnu dot org
2005-10-09 22:50 ` cvs-commit at gcc dot gnu dot org
2005-10-10 4:35 ` pinskia at gcc dot gnu dot org
10 siblings, 0 replies; 12+ messages in thread
From: rakdver at gcc dot gnu dot org @ 2005-10-09 19:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from rakdver at gcc dot gnu dot org 2005-10-09 19:38 -------
Patch:
http://gcc.gnu.org/ml/gcc-patches/2005-10/msg00478.html
--
rakdver at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
` (8 preceding siblings ...)
2005-10-09 19:38 ` rakdver at gcc dot gnu dot org
@ 2005-10-09 22:50 ` cvs-commit at gcc dot gnu dot org
2005-10-10 4:35 ` pinskia at gcc dot gnu dot org
10 siblings, 0 replies; 12+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-10-09 22:50 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from cvs-commit at gcc dot gnu dot org 2005-10-09 22:50 -------
Subject: Bug 24226
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: rakdver@gcc.gnu.org 2005-10-09 22:50:01
Modified files:
gcc : ChangeLog tree-cfg.c tree-flow.h
tree-ssa-loop-niter.c
Log message:
PR tree-optimization/24226
* tree-cfg.c (remove_bb): Clean up unreachable loops.
* tree-flow.h (free_numbers_of_iterations_estimates_loop): Declare.
* tree-ssa-loop-niter.c (free_numbers_of_iterations_estimates_loop):
Export.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.10127&r2=2.10128
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-cfg.c.diff?cvsroot=gcc&r1=2.222&r2=2.223
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow.h.diff?cvsroot=gcc&r1=2.137&r2=2.138
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-loop-niter.c.diff?cvsroot=gcc&r1=2.45&r2=2.46
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/24226] [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling)
2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
` (9 preceding siblings ...)
2005-10-09 22:50 ` cvs-commit at gcc dot gnu dot org
@ 2005-10-10 4:35 ` pinskia at gcc dot gnu dot org
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-10-10 4:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from pinskia at gcc dot gnu dot org 2005-10-10 04:35 -------
Fixed.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24226
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2005-10-10 4:35 UTC | newest]
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2005-10-06 8:39 [Bug tree-optimization/24226] New: [4.1 Regression] ICE: Segmentation fault in operand_equal_p (complete loop unrolling) rguenth at gcc dot gnu dot org
2005-10-06 8:40 ` [Bug tree-optimization/24226] " rguenth at gcc dot gnu dot org
2005-10-06 11:28 ` rguenth at gcc dot gnu dot org
2005-10-06 11:43 ` rguenth at gcc dot gnu dot org
2005-10-06 11:43 ` rguenth at gcc dot gnu dot org
2005-10-06 13:41 ` pinskia at gcc dot gnu dot org
2005-10-06 15:19 ` belyshev at depni dot sinp dot msu dot ru
2005-10-06 22:27 ` janis187 at us dot ibm dot com
2005-10-09 9:04 ` rakdver at gcc dot gnu dot org
2005-10-09 19:38 ` rakdver at gcc dot gnu dot org
2005-10-09 22:50 ` cvs-commit at gcc dot gnu dot org
2005-10-10 4:35 ` pinskia at gcc dot gnu dot org
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