[Bug rtl-optimization/26555] New: unrecognizable insn on IA64

["debian-gcc at lists dot debian dot org" <gcc-bugzilla at gcc dot gnu dot org>]

[forwarded from http://bugs.debian.org/335078]

gcc version 4.0.3 20060212 (prerelease) (Debian 4.0.2-9)

% cat bla.c
union YYSTYPE {
    char *string;
    int intval;
};

void knparse (union YYSTYPE *yyvsp, union YYSTYPE yyval) {

    if (yyvsp[1].intval > yyvsp[0].intval)
        yyval.intval = yyvsp[0].intval;
    else
        yyval.intval = yyvsp[1].intval;
    *yyvsp = yyval;
}

% gcc -c bla.c 
% gcc -c bla.c -O
bla.c: In function 'knparse':
bla.c:13: error: unrecognizable insn:
(insn 43 42 32 0 (set (zero_extract:DI (reg/v:DI 342 [ yyval ])
            (const_int 32 [0x20])
            (const_int 0 [0x0]))
        (reg:DI 348)) -1 (insn_list:REG_DEP_TRUE 7 (insn_list:REG_DEP_TRUE 42
(nil)))
    (expr_list:REG_DEAD (reg:DI 348)
        (nil)))
bla.c:13: internal compiler error: in extract_insn, at recog.c:2020
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
For Debian GNU/Linux specific bug reporting instructions,
see <URL:file:///usr/share/doc/gcc-4.0/README.Bugs>.

No problem with 3.4.6 20060122


-- 
           Summary: unrecognizable insn on IA64
           Product: gcc
           Version: 4.0.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: debian-gcc at lists dot debian dot org
 GCC build triplet: ia64-linux-gnu
  GCC host triplet: ia64-linux-gnu
GCC target triplet: ia64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26555