Regenerate gcc/configure.

[pf3gnuchains/gcc-fork.git] / gcc / gimple-iterator.c

diff --git a/gcc/gimple-iterator.c b/gcc/gimple-iterator.c
index 66927d6..be5171b 100644 (file)
--- a/gcc/gimple-iterator.c
+++ b/gcc/gimple-iterator.c
@@ -1,5 +1,5 @@
 /* Iterator routines for GIMPLE statements.
-   Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2008, 2010 Free Software Foundation, Inc.
    Contributed by Aldy Hernandez  <aldy@quesejoda.com>
 
 This file is part of GCC.
@@ -45,9 +45,9 @@ static void
 update_modified_stmts (gimple_seq seq)
 {
   gimple_stmt_iterator gsi;
- 
+
   if (!ssa_operands_active ())
-    return;  
+    return;
   for (gsi = gsi_start (seq); !gsi_end_p (gsi); gsi_next (&gsi))
     update_stmt_if_modified (gsi_stmt (gsi));
 }
@@ -60,7 +60,7 @@ static void
 update_bb_for_stmts (gimple_seq_node first, basic_block bb)
 {
   gimple_seq_node n;
-  
+
   for (n = first; n; n = n->next)
     gimple_set_bb (n->stmt, bb);
 }
@@ -358,7 +358,8 @@ gsi_split_seq_before (gimple_stmt_iterator *i)
 
 /* Replace the statement pointed-to by GSI to STMT.  If UPDATE_EH_INFO
    is true, the exception handling information of the original
-   statement is moved to the new statement.  */
+   statement is moved to the new statement.  Assignments must only be
+   replaced with assignments to the same LHS.  */
 
 void
 gsi_replace (gimple_stmt_iterator *gsi, gimple stmt, bool update_eh_info)
@@ -368,6 +369,9 @@ gsi_replace (gimple_stmt_iterator *gsi, gimple stmt, bool update_eh_info)
   if (stmt == orig_stmt)
     return;
 
+  gcc_assert (!gimple_has_lhs (orig_stmt)
+             || gimple_get_lhs (orig_stmt) == gimple_get_lhs (stmt));
+
   gimple_set_location (stmt, gimple_location (orig_stmt));
   gimple_set_bb (stmt, gsi_bb (*gsi));
 
@@ -470,6 +474,9 @@ gsi_remove (gimple_stmt_iterator *i, bool remove_permanently)
   gimple_seq_node cur, next, prev;
   gimple stmt = gsi_stmt (*i);
 
+  if (gimple_code (stmt) != GIMPLE_PHI)
+    insert_debug_temps_for_defs (i);
+
   /* Free all the data flow information for STMT.  */
   gimple_set_bb (stmt, NULL);
   delink_stmt_imm_use (stmt);