------- 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
