gcc:

2012-10-31  Dehao Chen  <dehao@google.com>

	* tree-eh.c (do_return_redirection): Set location for jump statement.
	(do_goto_redirection): Likewise.
	(frob_into_branch_around): Likewise.
	(lower_try_finally_nofallthru): Likewise.
	(lower_try_finally_copy): Likewise.
	(lower_try_finally_switch): Likewise.
	* expr.c (store_expr): Use current insn location instead of expr
	location.
	(expand_expr_real): Likewise.
	(expand_expr_real_1): Likewise.

gcc/testsuite:
2012-10-31  Dehao Chen  <dehao@google.com>

	* g++.dg/debug/dwarf2/block.C: New testcase.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@193053 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 12 insertions, 29 deletions

diff --git a/gcc/expr.c b/gcc/expr.c
index db20e9cb635..0ad3b578f17 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -5024,7 +5024,7 @@ store_expr (tree exp, rtx target, int call_param_p, bool nontemporal)
 {
   rtx temp;
   rtx alt_rtl = NULL_RTX;
-  location_t loc = EXPR_LOCATION (exp);
+  location_t loc = curr_insn_location ();
 
   if (VOID_TYPE_P (TREE_TYPE (exp)))
     {
@@ -7863,31 +7863,7 @@ expand_expr_real (tree exp, rtx target, enum machine_mode tmode,
       return ret ? ret : const0_rtx;
     }
 
-  /* If this is an expression of some kind and it has an associated line
-     number, then emit the line number before expanding the expression.
-
-     We need to save and restore the file and line information so that
-     errors discovered during expansion are emitted with the right
-     information.  It would be better of the diagnostic routines
-     used the file/line information embedded in the tree nodes rather
-     than globals.  */
-  if (cfun && EXPR_HAS_LOCATION (exp))
-    {
-      location_t saved_location = input_location;
-      location_t saved_curr_loc = curr_insn_location ();
-      input_location = EXPR_LOCATION (exp);
-      set_curr_insn_location (input_location);
-
-      ret = expand_expr_real_1 (exp, target, tmode, modifier, alt_rtl);
-
-      input_location = saved_location;
-      set_curr_insn_location (saved_curr_loc);
-    }
-  else
-    {
-      ret = expand_expr_real_1 (exp, target, tmode, modifier, alt_rtl);
-    }
-
+  ret = expand_expr_real_1 (exp, target, tmode, modifier, alt_rtl);
   return ret;
 }
 
@@ -9244,8 +9220,15 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
 	g = SSA_NAME_DEF_STMT (exp);
       if (g)
 	{
-	  rtx r = expand_expr_real (gimple_assign_rhs_to_tree (g), target,
-				    tmode, modifier, NULL);
+	  rtx r;
+	  location_t saved_loc = input_location;
+
+	  input_location = gimple_location (g);
+	  set_curr_insn_location (input_location);
+	  r = expand_expr_real (gimple_assign_rhs_to_tree (g), target,
+				tmode, modifier, NULL);
+	  input_location = saved_loc;
+	  set_curr_insn_location (saved_loc);
 	  if (REG_P (r) && !REG_EXPR (r))
 	    set_reg_attrs_for_decl_rtl (SSA_NAME_VAR (exp), r);
 	  return r;
@@ -9475,7 +9458,7 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
 	       with non-BLKmode values.  */
 	    gcc_assert (GET_MODE (ret) != BLKmode);
 
-	    val = build_decl (EXPR_LOCATION (exp),
+	    val = build_decl (curr_insn_location (),
 			      VAR_DECL, NULL, TREE_TYPE (exp));
 	    DECL_ARTIFICIAL (val) = 1;
 	    DECL_IGNORED_P (val) = 1;