2009-07-23 Paul Thomas <pault@gcc.gnu.org>

[pf3gnuchains/gcc-fork.git] / gcc / tree-loop-distribution.c

diff --git a/gcc/tree-loop-distribution.c b/gcc/tree-loop-distribution.c
index 51c6677..099a7fe 100644 (file)
--- a/gcc/tree-loop-distribution.c
+++ b/gcc/tree-loop-distribution.c
@@ -48,13 +48,10 @@ along with GCC; see the file COPYING3.  If not see
 #include "tm.h"
 #include "tree.h"
 #include "basic-block.h"
-#include "diagnostic.h"
 #include "tree-flow.h"
 #include "tree-dump.h"
 #include "timevar.h"
 #include "cfgloop.h"
-#include "expr.h"
-#include "optabs.h"
 #include "tree-chrec.h"
 #include "tree-data-ref.h"
 #include "tree-scalar-evolution.h"
@@ -198,18 +195,28 @@ generate_loops_for_partition (struct loop *loop, bitmap partition, bool copy_p)
 
       for (bsi = gsi_start_phis (bb); !gsi_end_p (bsi);)
        if (!bitmap_bit_p (partition, x++))
-         remove_phi_node (&bsi, true);
+         {
+           gimple phi = gsi_stmt (bsi);
+           if (!is_gimple_reg (gimple_phi_result (phi)))
+             mark_virtual_phi_result_for_renaming (phi);
+           remove_phi_node (&bsi, true);
+         }
        else
          gsi_next (&bsi);
 
       for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi);)
-       if (gimple_code (gsi_stmt (bsi)) != GIMPLE_LABEL
-           && !bitmap_bit_p (partition, x++))
-         gsi_remove (&bsi, false);
-       else
-         gsi_next (&bsi);
-
-       mark_virtual_ops_in_bb (bb);
+       {
+         gimple stmt = gsi_stmt (bsi);
+         if (gimple_code (gsi_stmt (bsi)) != GIMPLE_LABEL
+             && !bitmap_bit_p (partition, x++))
+           {
+             unlink_stmt_vdef (stmt);
+             gsi_remove (&bsi, true);
+             release_defs (stmt);
+           }
+         else
+           gsi_next (&bsi);
+       }
     }
 
   free (bbs);
@@ -243,7 +250,6 @@ generate_memset_zero (gimple stmt, tree op0, tree nb_iter,
   gimple_seq stmt_list = NULL, stmts;
   gimple fn_call;
   tree mem, fn;
-  gimple_stmt_iterator i;
   struct data_reference *dr = XCNEW (struct data_reference);
   location_t loc = gimple_location (stmt);
 
@@ -294,13 +300,6 @@ generate_memset_zero (gimple stmt, tree op0, tree nb_iter,
   fn = build_fold_addr_expr (implicit_built_in_decls [BUILT_IN_MEMSET]);
   fn_call = gimple_build_call (fn, 3, mem, integer_zero_node, nb_bytes);
   gimple_seq_add_stmt (&stmt_list, fn_call);
-
-  for (i = gsi_start (stmt_list); !gsi_end_p (i); gsi_next (&i))
-    {
-      gimple s = gsi_stmt (i);
-      update_stmt_if_modified (s);
-    }
-
   gsi_insert_seq_after (&bsi, stmt_list, GSI_CONTINUE_LINKING);
   res = true;
 
@@ -398,7 +397,7 @@ generate_builtin (struct loop *loop, bitmap partition, bool copy_p)
   op1 = gimple_assign_rhs1 (write);
 
   if (!(TREE_CODE (op0) == ARRAY_REF
-       || TREE_CODE (op0) == INDIRECT_REF))
+       || TREE_CODE (op0) == MEM_REF))
     goto end;
 
   /* The new statements will be placed before LOOP.  */