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* [Bug rtl-optimization/17825] New: ICE in reg_bitfield_target_p
@ 2004-10-04 6:59 jakub at gcc dot gnu dot org
2004-10-04 11:04 ` [Bug rtl-optimization/17825] [3.4/4.0 Regression] " giovannibajo at libero dot it
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: jakub at gcc dot gnu dot org @ 2004-10-04 6:59 UTC (permalink / raw)
To: gcc-bugs
register struct S *b asm ("rbp");
register unsigned int c asm ("rbx");
register unsigned int f asm ("r14");
extern int a;
void foo (int);
struct S
{
unsigned int h[8];
};
void
bar (void)
{
unsigned int j, k, l, m;
j = (f & 0xffff) | ((b->h[2] & 0xffff) << 16);
k = c & 0xffff;
if (k == 0)
{
foo (0);
}
l = (j / k) & 0xffff;
m = (j % k) & 0xffff;
f = (f & 0xffff0000) | l;
b->h[2] = (b->h[2] & 0xffff0000) | m;
}
on x86_64 causes ICE in reg_bitfield_target_p.
try_combine is called on i3:
(insn 33 32 35 2 (set (strict_low_part (subreg:HI (reg/v:SI 43 r14 [ f ]) 0))
(subreg:HI (reg:SI 68) 0)) 56 {*movstricthi_1} (insn_list:REG_DEP_TRUE 30
(nil))
(expr_list:REG_DEAD (reg:SI 68)
(nil)))
and i2:
(insn 30 29 31 2 (parallel [
(set (reg:SI 68)
(and:SI (reg:SI 66)
(const_int 65535 [0xffff])))
(clobber (reg:CC 17 flags))
]) 289 {*andsi_1} (insn_list:REG_DEP_TRUE 29 (nil))
(expr_list:REG_DEAD (reg:SI 66)
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil))))
but somewhere changes the pattern of i3 into invalid rtl:
(set (strict_low_part (reg:HI 43 r14 [ f ]))
(subreg:HI (reg:SI 66) 0))
(note missing subreg in the strict_low_part operand).
Works just fine in 3.3, reproduced in 3.4.2 and on HEAD.
--
Summary: ICE in reg_bitfield_target_p
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jakub at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: x86_64-redhat-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17825
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/17825] [3.4/4.0 Regression] ICE in reg_bitfield_target_p
2004-10-04 6:59 [Bug rtl-optimization/17825] New: ICE in reg_bitfield_target_p jakub at gcc dot gnu dot org
@ 2004-10-04 11:04 ` giovannibajo at libero dot it
2004-10-04 12:49 ` pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: giovannibajo at libero dot it @ 2004-10-04 11:04 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |critical
Keywords| |ice-on-valid-code
Summary|ICE in reg_bitfield_target_p|[3.4/4.0 Regression] ICE in
| |reg_bitfield_target_p
Target Milestone|--- |3.4.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17825
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/17825] [3.4/4.0 Regression] ICE in reg_bitfield_target_p
2004-10-04 6:59 [Bug rtl-optimization/17825] New: ICE in reg_bitfield_target_p jakub at gcc dot gnu dot org
2004-10-04 11:04 ` [Bug rtl-optimization/17825] [3.4/4.0 Regression] " giovannibajo at libero dot it
@ 2004-10-04 12:49 ` pinskia at gcc dot gnu dot org
2004-11-01 0:47 ` mmitchel at gcc dot gnu dot org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-04 12:49 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-04 12:49 -------
Confirmed on the mainline.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Known to fail| |4.0.0
Last reconfirmed|0000-00-00 00:00:00 |2004-10-04 12:49:30
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17825
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/17825] [3.4/4.0 Regression] ICE in reg_bitfield_target_p
2004-10-04 6:59 [Bug rtl-optimization/17825] New: ICE in reg_bitfield_target_p jakub at gcc dot gnu dot org
2004-10-04 11:04 ` [Bug rtl-optimization/17825] [3.4/4.0 Regression] " giovannibajo at libero dot it
2004-10-04 12:49 ` pinskia at gcc dot gnu dot org
@ 2004-11-01 0:47 ` mmitchel at gcc dot gnu dot org
2004-11-24 7:16 ` jakub at gcc dot gnu dot org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-11-01 0:47 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-11-01 00:46 -------
Postponed until GCC 3.4.4.
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|3.4.3 |3.4.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17825
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/17825] [3.4/4.0 Regression] ICE in reg_bitfield_target_p
2004-10-04 6:59 [Bug rtl-optimization/17825] New: ICE in reg_bitfield_target_p jakub at gcc dot gnu dot org
` (2 preceding siblings ...)
2004-11-01 0:47 ` mmitchel at gcc dot gnu dot org
@ 2004-11-24 7:16 ` jakub at gcc dot gnu dot org
2004-11-24 22:29 ` cvs-commit at gcc dot gnu dot org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: jakub at gcc dot gnu dot org @ 2004-11-24 7:16 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From jakub at gcc dot gnu dot org 2004-11-24 07:16 -------
http://gcc.gnu.org/ml/gcc-patches/2004-11/msg01574.html
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Last reconfirmed|2004-10-04 12:49:30 |2004-11-24 07:16:35
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17825
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/17825] [3.4/4.0 Regression] ICE in reg_bitfield_target_p
2004-10-04 6:59 [Bug rtl-optimization/17825] New: ICE in reg_bitfield_target_p jakub at gcc dot gnu dot org
` (3 preceding siblings ...)
2004-11-24 7:16 ` jakub at gcc dot gnu dot org
@ 2004-11-24 22:29 ` cvs-commit at gcc dot gnu dot org
2004-11-27 9:39 ` cvs-commit at gcc dot gnu dot org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-11-24 22:29 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-11-24 22:29 -------
Subject: Bug 17825
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-3_4-rhl-branch
Changes by: jakub@gcc.gnu.org 2004-11-24 22:28:46
Modified files:
gcc : ChangeLog combine.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gcc.c-torture/compile: 20041119-1.c
Log message:
PR rtl-optimization/17825
* combine.c (subst): Ignore STRICT_LOW_PART no matter if REG_P (new)
or not.
* gcc.c-torture/compile/20041119-1.c: New test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-rhl-branch&r1=2.2326.2.399.2.58&r2=2.2326.2.399.2.59
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-rhl-branch&r1=1.400.4.6.2.3&r2=1.400.4.6.2.4
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-rhl-branch&r1=1.3389.2.170.2.29&r2=1.3389.2.170.2.30
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/compile/20041119-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-rhl-branch&r1=NONE&r2=1.1.2.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17825
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/17825] [3.4/4.0 Regression] ICE in reg_bitfield_target_p
2004-10-04 6:59 [Bug rtl-optimization/17825] New: ICE in reg_bitfield_target_p jakub at gcc dot gnu dot org
` (4 preceding siblings ...)
2004-11-24 22:29 ` cvs-commit at gcc dot gnu dot org
@ 2004-11-27 9:39 ` cvs-commit at gcc dot gnu dot org
2005-03-17 1:36 ` [Bug rtl-optimization/17825] [3.4 " cvs-commit at gcc dot gnu dot org
2005-03-17 2:04 ` pinskia at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-11-27 9:39 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-11-27 09:39 -------
Subject: Bug 17825
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: jakub@gcc.gnu.org 2004-11-27 09:39:01
Modified files:
gcc : ChangeLog combine.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gcc.c-torture/compile: 20041119-1.c
Log message:
PR rtl-optimization/17825
* combine.c (subst): Ignore STRICT_LOW_PART no matter if REG_P (new)
or not.
* gcc.c-torture/compile/20041119-1.c: New test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.6580&r2=2.6581
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&r1=1.461&r2=1.462
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4656&r2=1.4657
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/compile/20041119-1.c.diff?cvsroot=gcc&r1=1.1&r2=1.2
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17825
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/17825] [3.4 Regression] ICE in reg_bitfield_target_p
2004-10-04 6:59 [Bug rtl-optimization/17825] New: ICE in reg_bitfield_target_p jakub at gcc dot gnu dot org
` (5 preceding siblings ...)
2004-11-27 9:39 ` cvs-commit at gcc dot gnu dot org
@ 2005-03-17 1:36 ` cvs-commit at gcc dot gnu dot org
2005-03-17 2:04 ` pinskia at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-03-17 1:36 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-03-17 01:36 -------
Subject: Bug 17825
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-3_4-branch
Changes by: sayle@gcc.gnu.org 2005-03-17 01:36:15
Modified files:
gcc : ChangeLog combine.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gcc.c-torture/compile: 20041119-1.c
Log message:
PR rtl-optimization/17825
Backport from mainline
2004-11-27 Jakub Jelinek <jakub@redhat.com>
* combine.c (subst): Ignore STRICT_LOW_PART no matter if REG_P (new)
or not.
PR rtl-optimization/17825
Backport from mainline
2004-11-27 Jakub Jelinek <jakub@redhat.com>
* gcc.c-torture/compile/20041119-1.c: New test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.818&r2=2.2326.2.819
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.400.4.13&r2=1.400.4.14
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3389.2.370&r2=1.3389.2.371
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/compile/20041119-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.2.28.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17825
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/17825] [3.4 Regression] ICE in reg_bitfield_target_p
2004-10-04 6:59 [Bug rtl-optimization/17825] New: ICE in reg_bitfield_target_p jakub at gcc dot gnu dot org
` (6 preceding siblings ...)
2005-03-17 1:36 ` [Bug rtl-optimization/17825] [3.4 " cvs-commit at gcc dot gnu dot org
@ 2005-03-17 2:04 ` pinskia at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-03-17 2:04 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-03-17 02:04 -------
Fixed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17825
^ permalink raw reply [flat|nested] 9+ messages in thread
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2004-10-04 6:59 [Bug rtl-optimization/17825] New: ICE in reg_bitfield_target_p jakub at gcc dot gnu dot org
2004-10-04 11:04 ` [Bug rtl-optimization/17825] [3.4/4.0 Regression] " giovannibajo at libero dot it
2004-10-04 12:49 ` pinskia at gcc dot gnu dot org
2004-11-01 0:47 ` mmitchel at gcc dot gnu dot org
2004-11-24 7:16 ` jakub at gcc dot gnu dot org
2004-11-24 22:29 ` cvs-commit at gcc dot gnu dot org
2004-11-27 9:39 ` cvs-commit at gcc dot gnu dot org
2005-03-17 1:36 ` [Bug rtl-optimization/17825] [3.4 " cvs-commit at gcc dot gnu dot org
2005-03-17 2:04 ` pinskia at gcc dot gnu dot org
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