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[Bug rtl-optimization/24257] New: ICE: in extract_insn, at recog.c:2084 with -O -fgcse -fgcse-sm
- From: "ferdinandw+gcc at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Oct 2005 15:17:38 -0000
- Subject: [Bug rtl-optimization/24257] New: ICE: in extract_insn, at recog.c:2084 with -O -fgcse -fgcse-sm
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
/tmp/gcc41/libexec/gcc/i686-pc-linux-gnu/4.1.0/cc1 -quiet -v icefoo.c -dumpbase
icefoo.c -auxbase icefoo -O -version -fgcse -fgcse-sm -o icefoo.s
GNU C version 4.1.0 20051007 (experimental) (i686-pc-linux-gnu)
compiled by GNU C version 4.1.0 20051007 (experimental).
GGC heuristics: --param ggc-min-expand=99 --param ggc-min-heapsize=129306
Compiler executable checksum: a278381769db4d67bad1ec630ceb45dd
icefoo.c: In function 'oof':
icefoo.c:23: error: unrecognizable insn:
(insn 47 15 19 0 (set (reg:SI 61)
(ashift:SI (mem/s/j:SI (reg/v/f:SI 59 [ s ]) [0 <variable>.buf+0 S4
A32])
(subreg:QI (reg/v:SI 60 [ n ]) 0))) -1 (nil)
(expr_list:REG_DEAD (reg/v:SI 60 [ n ])
(nil)))
icefoo.c:23: internal compiler error: in extract_insn, at recog.c:2084
Configured with: ../gcc/configure --prefix=/tmp/gcc41 --enable-languages=c
--disable-nls --enable-checking=assert,rtlflag,misc
========================================================
typedef struct A {
int buf, left;
} A;
static void flush(A *s, int n)
{
s->buf <<= n;
while (s->left < 32) {
s->buf <<= 8;
s->left += 8;
}
s->buf=0;
}
void oof(A *s, int n)
{
s->buf = n;
s->left = n;
flush(s, n);
}
========================================================
--
Summary: ICE: in extract_insn, at recog.c:2084 with -O -fgcse -
fgcse-sm
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ferdinandw+gcc at gmail dot com
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24257