[Bug target/19770] gcc.c-torture/compile/20050113-1.c: ICE: in extract_insn, at recog.c:2083

[Bug target/19770] gcc.c-torture/compile/20050113-1.c: ICE: in extract_insn, at recog.c:2083

[flash at pobox dot com]

------- Additional Comments From flash at pobox dot com  2005-05-17 03:26 -------
See also 19960 (darwin/m6811-elf) and 21613 (i686-linux/arm-linux).

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |flash at pobox dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19770

[Bug target/19770] gcc.c-torture/compile/20050113-1.c: ICE: in extract_insn, at recog.c:2083

[danglin at gcc dot gnu dot org]

------- Additional Comments From danglin at gcc dot gnu dot org  2005-08-07 01:46 -------
The problem is that emit_move_insn_1 is generating a move instruction
with a CONST_INT source that's invalid (i.e., LEGITIMATE_CONST_P is false).
This occurs here:

  /* Try using a move pattern for the corresponding integer mode.  This is
     only safe when simplify_subreg can convert MODE constants into integer
     constants.  At present, it can only do this reliably if the value
     fits within a HOST_WIDE_INT.  */
  else if (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT
           && (submode = int_mode_for_mode (mode)) != BLKmode
           && mov_optab->handlers[submode].insn_code != CODE_FOR_nothing)
    return emit_insn (GEN_FCN (mov_optab->handlers[submode].insn_code)
                      (simplify_gen_subreg (submode, x, mode, 0),
                       simplify_gen_subreg (submode, y, mode, 0)));



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19770

[Bug target/19770] gcc.c-torture/compile/20050113-1.c: ICE: in extract_insn, at recog.c:2083

[danglin at gcc dot gnu dot org]

------- Comment #5 from danglin at gcc dot gnu dot org  2006-06-06 23:31 -------
Reconfirmed in 3.4.6.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19770

[Bug target/19770] gcc.c-torture/compile/20050113-1.c: ICE: in extract_insn, at recog.c:2083

[sje at cup dot hp dot com]

------- Comment #4 from sje at cup dot hp dot com  2006-05-05 21:47 -------
PR 21613 (same bug on a different platform) was closed with the comment that
this got fixed when tree-ssa was merged in and that it would hard to fix in the
3.4 branch.  I verified I can still see it on 3.4.5 and that it is not in 4.0.3
or 4.1.  I will close this out as fixed in 4.0.  Dave, let me know if you have
any objections to this resolution.


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sje at cup dot hp dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sje at cup dot hp dot com
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19770

[Bug target/19770] gcc.c-torture/compile/20050113-1.c: ICE: in extract_insn, at recog.c:2083

[danglin at gcc dot gnu dot org]

------- Comment #3 from danglin at gcc dot gnu dot org  2005-12-13 21:43 -------
Reconfirmed in 3.4.5.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19770