[Bug tree-optimization/42341] New: ICE in insert_value_copy_on_edge, at tree-outof-ssa.c:228

[Bug tree-optimization/42341] New: ICE in insert_value_copy_on_edge, at tree-outof-ssa.c:228

[ubizjak at gmail dot com]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 2632 bytes --]

Attached object file crashes with lto compilation on alphaev68 cross:

~/gcc-build-alpha/gcc/lto1 -O0 c_lto_20090116_0.o
Performing interprocedural optimizations
 <whole-program> <inline>Assembling functions:
 foo
In file included from :0:0:
/home/uros/gcc-svn/trunk/gcc/testsuite/gcc.dg/lto/20090116_0.c: In function
‘foo’:
/home/uros/gcc-svn/trunk/gcc/testsuite/gcc.dg/lto/20090116_0.c:5:5: internal
compiler error: in insert_value_copy_on_edge, at tree-outof-ssa.c:228
Please submit a full bug report,
...

Breakpoint 1, fancy_abort (
    file=0xa6fa28 "../../gcc-svn/trunk/gcc/tree-outof-ssa.c", line=228, 
    function=0xa6ff50 "insert_value_copy_on_edge")
    at ../../gcc-svn/trunk/gcc/diagnostic.c:727
727     {
(gdb) bt
#0  fancy_abort (file=0xa6fa28 "../../gcc-svn/trunk/gcc/tree-outof-ssa.c", 
    line=228, function=0xa6ff50 "insert_value_copy_on_edge")
    at ../../gcc-svn/trunk/gcc/diagnostic.c:727
#1  0x000000000076b1a5 in insert_value_copy_on_edge (e=0x2b72551e7040, dest=1, 
    src=0x2b7255135c58, locus=147)
    at ../../gcc-svn/trunk/gcc/tree-outof-ssa.c:228
#2  0x000000000076c835 in eliminate_phi (e=0x2b72551e7040, g=0x102c9f0)
    at ../../gcc-svn/trunk/gcc/tree-outof-ssa.c:678
#3  0x000000000076cf94 in expand_phi_nodes (sa=0xd8b820)
    at ../../gcc-svn/trunk/gcc/tree-outof-ssa.c:840
#4  0x00000000004bd201 in gimple_expand_cfg ()
    at ../../gcc-svn/trunk/gcc/cfgexpand.c:3585
#5  0x0000000000677919 in execute_one_pass (pass=0xd4d5e0)
    at ../../gcc-svn/trunk/gcc/passes.c:1543

(gdb) up
#1  0x000000000076b1a5 in insert_value_copy_on_edge (e=0x2b72551e7040, dest=1, 
    src=0x2b7255135c58, locus=147)
    at ../../gcc-svn/trunk/gcc/tree-outof-ssa.c:228
228       gcc_assert (dest_mode == GET_MODE (SA.partition_to_pseudo[dest]));

(gdb) p dest_mode
$1 = DImode
(gdb) p SA.partition_to_pseudo[dest]
$2 = (rtx) 0x2b72551df240
(gdb) p debug_rtx (SA.partition_to_pseudo[dest])
(mem/c/i:SI (plus:DI (reg/f:DI 65 virtual-stack-vars)
        (const_int 4 [0x4])) [0 i+0 S4 A32])
$3 = void

This is reproductable with a cross to alpha-linux-elf.


-- 
           Summary: ICE in insert_value_copy_on_edge, at tree-outof-
                    ssa.c:228
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ubizjak at gmail dot com
 GCC build triplet: x86_64-pc-linux-gnu
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: alphaev68-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42341

[Bug tree-optimization/42341] ICE in insert_value_copy_on_edge, at tree-outof-ssa.c:228

[ubizjak at gmail dot com]

------- Comment #1 from ubizjak at gmail dot com  2009-12-09 11:22 -------
Created an attachment (id=19264)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19264&action=view)
Object file that triggers the ICE.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42341

[Bug tree-optimization/42341] ICE in insert_value_copy_on_edge, at tree-outof-ssa.c:228

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2009-12-09 11:35 -------
How was the object file built?  (I suppose this is simply a testsuite failure
of gcc.dg/lto/20090116?)

There was a dup for this for other archs I believe and the issue is
basically -Ox vs. -O0 compile which breaks some out-of-SSA invariants.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org
           Keywords|                            |lto


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42341

[Bug tree-optimization/42341] ICE in insert_value_copy_on_edge, at tree-outof-ssa.c:228

[ubizjak at gmail dot com]

------- Comment #3 from ubizjak at gmail dot com  2009-12-09 13:03 -------
(In reply to comment #2)
> How was the object file built?  (I suppose this is simply a testsuite failure
> of gcc.dg/lto/20090116?)
> 
> There was a dup for this for other archs I believe and the issue is
> basically -Ox vs. -O0 compile which breaks some out-of-SSA invariants.

Yes, it was built with:

/home/uros/gcc-build-alpha/gcc/xgcc -B/home/uros/gcc-build-alpha/gcc/ -O1
-fwhopr -fPIC  -c  -o c_lto_20090116_0.o
/home/uros/gcc-svn/trunk/gcc/testsuite/gcc.dg/lto/20090116_0.c

(I'm not aware of any similar bugreport).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42341

[Bug tree-optimization/42341] ICE in insert_value_copy_on_edge, at tree-outof-ssa.c:228

[danglin at gcc dot gnu dot org]

------- Comment #4 from danglin at gcc dot gnu dot org  2010-03-07 17:52 -------
gcc.dg/lto/20090116 fails on hppa64-hp-hpux11.11 as shown in #1.


-- 

danglin at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |danglin at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-03-07 17:52:40
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42341

[Bug tree-optimization/42341] ICE in insert_value_copy_on_edge, at tree-outof-ssa.c:228

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2010-04-23 15:51 -------


*** This bug has been marked as a duplicate of 41159 ***


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42341