[Bug middle-end/19175] New: [3.4 regression] RTL checking failures on i686-pc-linux-gnu

[Bug middle-end/19175] New: [3.4 regression] RTL checking failures on i686-pc-linux-gnu

[ghazi at gcc dot gnu dot org]

When configured with --enable-checking=misc,tree,rtl,rtlflag,gc I'm seeing 
extra RTL checking failures with 3.4.x on i686-pc-linux-gnu as seen here:
http://gcc.gnu.org/ml/gcc-testresults/2004-12/msg01282.html

The checking failures all appear to be similar:

gcc.log:gcc.dg/i386-loop-3.c:62: internal compiler error: RTL check: expected 
elt 2 type 'e' or 'u', have '0' (rtx label_ref) in next_active_insn, at emit-
rtl.c:3130
gcc.log:gcc.dg/i386-unroll-1.c:17: internal compiler error: RTL check: expected 
elt 2 type 'e' or 'u', have '0' (rtx label_ref) in next_active_insn, at emit-
rtl.c:3130
gcc.log:gcc.dg/unroll-1.c:16: internal compiler error: RTL check: expected elt 
2 type 'e' or 'u', have '0' (rtx label_ref) in next_active_insn, at emit-
rtl.c:3130
g++.log:g++.dg/opt/longbranch2.C:62: internal compiler error: RTL check: 
expected elt 2 type 'e' or 'u', have '0' (rtx label_ref) in next_active_insn, 
at emit-rtl.c:3130

I don't know if these RTL failures are specific to x86 or not since it's 
crashing in emit-rtl.c.  I don't see these failures with 3.3.x so it's a 
regression.

-- 
           Summary: [3.4 regression] RTL checking failures on i686-pc-linux-
                    gnu
           Product: gcc
           Version: 3.4.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ghazi at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 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=19175

[Bug middle-end/19175] [3.4 regression] RTL checking failures on i686-pc-linux-gnu

[roger at eyesopen dot com]

------- Additional Comments From roger at eyesopen dot com  2004-12-28 17:49 -------
Currently bootstrapping and regression testing a fix.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |roger at eyesopen dot com
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-12-28 17:49:29
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19175

[Bug middle-end/19175] [3.4 regression] RTL checking failures on i686-pc-linux-gnu

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
   Target Milestone|---                         |3.4.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19175

[Bug middle-end/19175] [3.4 regression] RTL checking failures on i686-pc-linux-gnu

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-12-30 20:23 -------
Subject: Bug 19175

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	sayle@gcc.gnu.org	2004-12-30 20:23:29

Modified files:
	gcc            : ChangeLog loop-unroll.c 

Log message:
	PR middle-end/19175
	* loop-unroll.c (expand_bct): Pass the code_label to the function
	do_compare_rtx_and_jump, not the label ref.  Clean-up style issues.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.758&r2=2.2326.2.759
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop-unroll.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.13.4.2&r2=1.13.4.3



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19175

[Bug middle-end/19175] [3.4 regression] RTL checking failures on i686-pc-linux-gnu

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-12-30 20:40 -------
Fixed.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19175