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From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/37924] [4.2/4.3/4.4 Regression] ice in smallest_mode_for_size, at stor-layout.c:219
Date: Mon, 27 Oct 2008 11:02:00 -0000 [thread overview]
Message-ID: <20081027110106.22773.qmail@sourceware.org> (raw)
In-Reply-To: <bug-37924-12544@http.gcc.gnu.org/bugzilla/>
------- Comment #1 from rguenth at gcc dot gnu dot org 2008-10-27 11:01 -------
(gdb) up
#1 0x08491138 in smallest_mode_for_size (size=4294967295, class=MODE_INT)
at /home/richard/src/gcc-4_3-branch/gcc/stor-layout.c:219
219 gcc_unreachable ();
#3 0x0898cb61 in make_compound_operation (x=0xb7caf300, in_code=COMPARE)
at /home/richard/src/gcc-4_3-branch/gcc/combine.c:7030
7030 new = make_extraction (mode, new,
(gdb) l
7025 && GET_CODE (lhs) == ASHIFT
7026 && GET_CODE (XEXP (lhs, 1)) == CONST_INT
7027 && INTVAL (rhs) >= INTVAL (XEXP (lhs, 1)))
7028 {
7029 new = make_compound_operation (XEXP (lhs, 0), next_code);
7030 new = make_extraction (mode, new,
7031 INTVAL (rhs) - INTVAL (XEXP (lhs, 1)),
7032 NULL_RTX, mode_width - INTVAL (rhs),
7033 code == LSHIFTRT, 0, in_code ==
COMPARE);
7034 break;
(gdb) call debug_rtx (rhs)
(const_int 33 [0x21])
(gdb) call debug_rtx (lhs)
(ashift:SI (subreg:SI (mem/c/i:QI (symbol_ref:SI ("g_95") <var_decl 0xb7c3c1b8
g_95>) [0 g_95+0 S1 A8]) 0)
(const_int 24 [0x18]))
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |ice-on-valid-code
Known to fail| |4.2.4 4.3.2 4.4.0
Known to work| |4.1.2
Last reconfirmed|0000-00-00 00:00:00 |2008-10-27 11:01:06
date| |
Summary|ice in |[4.2/4.3/4.4 Regression] ice
|smallest_mode_for_size, at |in smallest_mode_for_size,
|stor-layout.c:219 |at stor-layout.c:219
Target Milestone|--- |4.2.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37924
next prev parent reply other threads:[~2008-10-27 11:02 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-27 3:28 [Bug c/37924] New: " regehr at cs dot utah dot edu
2008-10-27 11:02 ` rguenth at gcc dot gnu dot org [this message]
2008-10-27 12:40 ` [Bug c/37924] [4.2/4.3/4.4 Regression] " jakub at gcc dot gnu dot org
2008-10-27 13:54 ` jakub at gcc dot gnu dot org
2008-10-27 18:55 ` pinskia at gcc dot gnu dot org
2008-10-28 19:05 ` jakub at gcc dot gnu dot org
2008-10-28 19:07 ` [Bug c/37924] [4.2/4.3 " jakub at gcc dot gnu dot org
2008-11-03 11:28 ` jakub at gcc dot gnu dot org
2008-11-05 20:45 ` jakub at gcc dot gnu dot org
2008-11-05 20:48 ` jakub at gcc dot gnu dot org
2009-03-31 15:50 ` [Bug c/37924] [4.2 " jsm28 at gcc dot gnu dot org
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