[Bug tree-optimization/47890] [4.5/4.6 Regression] internal compiler error: in vect_get_vec_def_for_stmt_copy, at tree-vect-stmts.c:1186

["irar at il dot ibm.com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47890

--- Comment #5 from Ira Rosen <irar at il dot ibm.com> 2011-02-26 14:45:30 UTC ---
Similar to your patch, Richard, but with different related stmt:

@@ -2886,6 +3024,10 @@ get_initial_def_for_induction (gimple iv
       gimple_assign_set_lhs (new_stmt, induc_def);
       si = gsi_start_bb (bb);
       gsi_insert_before (&si, new_stmt, GSI_SAME_STMT);
+      set_vinfo_for_stmt (new_stmt,
+                         new_stmt_vec_info (new_stmt, loop_vinfo, NULL));
+      STMT_VINFO_RELATED_STMT (vinfo_for_stmt (new_stmt))
+        = STMT_VINFO_RELATED_STMT (vinfo_for_stmt (induction_phi));
     }

The problem is that we first create copies and store them in RELATED_STMT
starting from INDUCTION_PHI, and then handle the cast. So, this patch copies
RELATED_STMT from INDUCTION_PHI to the VIEW_CONVERT stmt.

Ira