[Bug tree-optimization/50613] New: ICE: tree check: expected ssa_name, have addr_expr in find_equal_ptrs, at tree-ssa-strlen.c:712 with -foptimize-strlen -fno-tree-ccp

[Bug tree-optimization/50613] New: ICE: tree check: expected ssa_name, have addr_expr in find_equal_ptrs, at tree-ssa-strlen.c:712 with -foptimize-strlen -fno-tree-ccp

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50613

             Bug #: 50613
           Summary: ICE: tree check: expected ssa_name, have addr_expr in
                    find_equal_ptrs, at tree-ssa-strlen.c:712 with
                    -foptimize-strlen -fno-tree-ccp
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
                CC: jakub@gcc.gnu.org
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 25413
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25413
reduced testcase

Compiler output:
$ gcc -O -foptimize-strlen -fno-tree-ccp testcase.c 
testcase.c: In function 'foo':
testcase.c:10:1: internal compiler error: tree check: expected ssa_name, have
addr_expr in find_equal_ptrs, at tree-ssa-strlen.c:712
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r179488 - crash

[Bug tree-optimization/50613] ICE: tree check: expected ssa_name, have addr_expr in find_equal_ptrs, at tree-ssa-strlen.c:712 with -foptimize-strlen -fno-tree-ccp

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50613

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011-10-05
         AssignedTo|unassigned at gcc dot       |jakub at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-10-05 06:30:59 UTC ---
Created attachment 25418
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25418
gcc47-pr50613.patch

Untested fix.

[Bug tree-optimization/50613] [4.7 Regression] ICE: tree check: expected ssa_name, have addr_expr in find_equal_ptrs, at tree-ssa-strlen.c:712 with -foptimize-strlen -fno-tree-ccp

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50613

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.7.0
            Summary|ICE: tree check: expected   |[4.7 Regression] ICE: tree
                   |ssa_name, have addr_expr in |check: expected ssa_name,
                   |find_equal_ptrs, at         |have addr_expr in
                   |tree-ssa-strlen.c:712 with  |find_equal_ptrs, at
                   |-foptimize-strlen           |tree-ssa-strlen.c:712 with
                   |-fno-tree-ccp               |-foptimize-strlen
                   |                            |-fno-tree-ccp

[Bug tree-optimization/50613] [4.7 Regression] ICE: tree check: expected ssa_name, have addr_expr in find_equal_ptrs, at tree-ssa-strlen.c:712 with -foptimize-strlen -fno-tree-ccp

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50613

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-10-05 18:10:03 UTC ---
Author: jakub
Date: Wed Oct  5 18:09:56 2011
New Revision: 179567

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179567
Log:
    PR tree-optimization/50613
    * tree-ssa-strlen.c (find_equal_ptrs): If CASE_CONVERT
    operand is ADDR_EXPR, fallthru into ADDR_EXPR handling,
    and if it is neither that not SSA_NAME, give up.

    * gcc.dg/pr50613.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr50613.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-strlen.c

[Bug tree-optimization/50613] [4.7 Regression] ICE: tree check: expected ssa_name, have addr_expr in find_equal_ptrs, at tree-ssa-strlen.c:712 with -foptimize-strlen -fno-tree-ccp

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50613

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

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

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-10-05 18:16:55 UTC ---
Fixed.