[Bug tree-optimization/30667] New: [Regression 4.3] ICE in immed_double_const, at emit-rtl.c:468

[Bug tree-optimization/30667] New: [Regression 4.3] ICE in immed_double_const, at emit-rtl.c:468

[burnus at gcc dot gnu dot org]

Using gcc version 4.3.0 20070201
and   gcc version 4.3.0 20070130 on i386-pc-linux-gnu
(AMD Athlon(tm) XP 2800+) with the following options causes an ICE:

$ gfortran-4.3 -O2 -ftree-vectorize -march=athlon-xp test.f
test.f: In function 'cblank_cvb':
test.f:6: internal compiler error: in immed_double_const, at emit-rtl.c:468

gcc version 4.1.1 20060724 (prerelease) (4.1.1-3mdk) with
gfortran-4.1.1 -O2 -ftree-vectorize -march=athlon-xp test.f
gives no ICE.

On AMD Athlon(tm) 64 X2 Dual Core Processor 4800+ with today's 4.3 build
(gcc-Version 4.3.0 20070131 (experimental), x86_64-unknown-linux-gnu) and
gfortran -O3 -ftree-vectorize -march=athlon-xp -m32 xxx.f90
it does not give an ICE either.

Test case:
------------------------------------------
      subroutine cblank_cvb(a,ndim)
      character*(*) a
      character*1 blank
      data blank/' '/
      do 100 i=1,ndim
100   a(i:i)=blank
      end
------------------------------------------

Backtrace:

Breakpoint 1, fancy_abort (file=0x84af1dc
"/home/fxcoudert/gfortran_nightbuild/trunk/gcc/emit-rtl.c", line=468,
    function=0x84af1c9 "immed_double_const") at
/home/fxcoudert/gfortran_nightbuild/trunk/gcc/diagnostic.c:641
641     /home/fxcoudert/gfortran_nightbuild/trunk/gcc/diagnostic.c: No such
file or directory.
        in /home/fxcoudert/gfortran_nightbuild/trunk/gcc/diagnostic.c
(gdb) bt
#0  fancy_abort (file=0x84af1dc
"/home/fxcoudert/gfortran_nightbuild/trunk/gcc/emit-rtl.c", line=468,
    function=0x84af1c9 "immed_double_const") at
/home/fxcoudert/gfortran_nightbuild/trunk/gcc/diagnostic.c:641
#1  0x0811089f in immed_double_const (i0=32, i1=0, mode=TImode) at
/home/fxcoudert/gfortran_nightbuild/trunk/gcc/emit-rtl.c:468
#2  0x000001d4 in ?? ()
#3  0x084af1c9 in __FUNCTION__.27361 ()
#4  0x00000080 in ?? ()
#5  0x00000000 in ?? ()


-- 
           Summary: [Regression 4.3] ICE in immed_double_const, at emit-
                    rtl.c:468
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: burnus at gcc dot gnu dot org
GCC target triplet: i386-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30667

[Bug middle-end/30667] [Regression 4.3] ICE in immed_double_const, at emit-rtl.c:468

[ubizjak at gmail dot com]

------- Comment #1 from ubizjak at gmail dot com  2007-02-02 14:43 -------
Patch at http://gcc.gnu.org/ml/gcc-patches/2007-02/msg00153.html


-- 

ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |ubizjak at gmail dot com
                   |dot org                     |
                URL|                            |http://gcc.gnu.org/ml/gcc-
                   |                            |patches/2007-
                   |                            |02/msg00153.html
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-02-02 14:43:58
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30667

[Bug middle-end/30667] [4.3 Regression] ICE in immed_double_const, at emit-rtl.c:468

[jsm28 at gcc dot gnu dot org]

-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[Regression 4.3] ICE in     |[4.3 Regression] ICE in
                   |immed_double_const, at emit-|immed_double_const, at emit-
                   |rtl.c:468                   |rtl.c:468
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30667

[Bug middle-end/30667] [4.3 Regression] ICE in immed_double_const, at emit-rtl.c:468

[uros at gcc dot gnu dot org]

------- Comment #2 from uros at gcc dot gnu dot org  2007-02-03 23:39 -------
Subject: Bug 30667

Author: uros
Date: Sat Feb  3 23:39:31 2007
New Revision: 121555

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=121555
Log:
        PR middle-end/30667
        * combine.c (try_combine): Do not substitute source operand
        with constants wider than 2 * HOST_BITS_PER_WIDE_INT.

testsuite/ChangeLog:

        PR middle-end/30667
        * gfortran.dg/pr30667.f: New test.


Added:
    trunk/gcc/testsuite/gfortran.dg/pr30667.f
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30667

[Bug middle-end/30667] [4.3 Regression] ICE in immed_double_const, at emit-rtl.c:468

[harsha dot jagasia at amd dot com]

------- Comment #3 from harsha dot jagasia at amd dot com  2007-02-12 21:25 -------
Does the patch from Uros fix this bug or is it still unresolved? 


-- 

harsha dot jagasia at amd dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |harsha dot jagasia at amd
                   |                            |dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30667

[Bug middle-end/30667] [4.3 Regression] ICE in immed_double_const, at emit-rtl.c:468

[jellby at yahoo dot com]

------- Comment #4 from jellby at yahoo dot com  2007-02-14 13:45 -------
It's solved for me with gcc version 4.3.0 20070209 (it failed before).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30667

[Bug middle-end/30667] [4.3 Regression] ICE in immed_double_const, at emit-rtl.c:468

[ubizjak at gmail dot com]

------- Comment #5 from ubizjak at gmail dot com  2007-03-02 14:53 -------
Fixed in mainline.


-- 

ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
      Known to work|                            |4.3.0
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30667