[Bug middle-end/32321] New: ICE in df_refs_verify

[Bug middle-end/32321] New: ICE in df_refs_verify

[tsarkov at cs dot man dot ac dot uk]

>gcc-4.3 -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../gcc/configure --enable-checking --prefix=/opt/gcc
--enable-shared --enable-threads --program-suffix=-4.3 --enable-__cxa_atexit
--disable-nls --with-mpfr=/usr/local
--enable-languages=c,c++,objc,obj-c++,treelang,fortran
Thread model: posix
gcc version 4.3.0 20070612 (experimental)

>gcc-4.3 -c -O2 -fgcse-sm bdd_kernel.c
bdd_kernel.c: In function 'bdd_noderesize':
bdd_kernel.c:27: internal compiler error: in df_refs_verify, at df-scan.c:4092
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: ICE in df_refs_verify
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tsarkov at cs dot man dot ac dot uk
 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=32321

[Bug middle-end/32321] ICE in df_refs_verify

[tsarkov at cs dot man dot ac dot uk]

------- Comment #1 from tsarkov at cs dot man dot ac dot uk  2007-06-13 15:42 -------
Created an attachment (id=13697)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13697&action=view)
Preprocessed sources

Code that triggers ICE


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32321

[Bug middle-end/32321] [4.3 Regression] ICE in df_refs_verify with -fgcse-sm

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |spark at gcc dot gnu dot org
           Keywords|                            |ice-on-valid-code
            Summary|ICE in df_refs_verify       |[4.3 Regression] ICE in
                   |                            |df_refs_verify with -fgcse-
                   |                            |sm
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32321

[Bug middle-end/32321] [4.3 Regression] ICE in df_refs_verify with -fgcse-sm

[spark at gcc dot gnu dot org]

------- Comment #2 from spark at gcc dot gnu dot org  2007-06-14 19:49 -------
The problem is reproducible also on x86-64.
The following patch seems to fix the ICE.
I'll start a bootstrap/testing.

*** /tmp/gcse.c 2007-06-14 19:46:27.000000000 +0000
--- gcc/gcse.c  2007-06-14 19:44:19.000000000 +0000
*************** replace_store_insn (rtx reg, rtx del, ba
*** 6341,6357 ****

    mem = smexpr->pattern;
    insn = gen_move_insn (reg, SET_SRC (single_set (del)));
-   insn = emit_insn_after (insn, del);
-
-   if (dump_file)
-     {
-       fprintf (dump_file,
-              "STORE_MOTION  delete insn in BB %d:\n      ", bb->index);
-       print_inline_rtx (dump_file, del, 6);
-       fprintf (dump_file, "\nSTORE MOTION  replaced with insn:\n      ");
-       print_inline_rtx (dump_file, insn, 6);
-       fprintf (dump_file, "\n");
-     }

    for (ptr = ANTIC_STORE_LIST (smexpr); ptr; ptr = XEXP (ptr, 1))
      if (XEXP (ptr, 0) == del)
--- 6341,6346 ----
*************** replace_store_insn (rtx reg, rtx del, ba
*** 6379,6384 ****
--- 6368,6385 ----
        XEXP (note, 0) = insn;
      }

+   insn = emit_insn_after (insn, del);
+
+   if (dump_file)
+     {
+       fprintf (dump_file,
+              "STORE_MOTION  delete insn in BB %d:\n      ", bb->index);
+       print_inline_rtx (dump_file, del, 6);
+       fprintf (dump_file, "\nSTORE MOTION  replaced with insn:\n      ");
+       print_inline_rtx (dump_file, insn, 6);
+       fprintf (dump_file, "\n");
+     }
+
    delete_insn (del);

    /* Now we must handle REG_EQUAL notes whose contents is equal to the mem;


-- 

spark at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |spark at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-06-14 19:49:10
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32321

[Bug middle-end/32321] [4.3 Regression] ICE in df_refs_verify with -fgcse-sm

[spark at gcc dot gnu dot org]

------- Comment #3 from spark at gcc dot gnu dot org  2007-06-18 20:49 -------
Subject: Bug 32321

Author: spark
Date: Mon Jun 18 20:49:23 2007
New Revision: 125827

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=125827
Log:
2007-06-18  Seongbae Park  <seongbae.park@gmail.com>

        PR rtl-optimization/32321
        * gcse.c (replace_store_insn): Update the note before
        calling emit_insn_after.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gcse.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32321

[Bug middle-end/32321] [4.3 Regression] ICE in df_refs_verify with -fgcse-sm

[spark at gcc dot gnu dot org]

------- Comment #4 from spark at gcc dot gnu dot org  2007-06-19 04:38 -------
Fixed.


-- 

spark at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32321