expr.c (expand_expr_real_1): For expanding TERed defs set the current location to that of the def if not UNKNOWN.

2015-09-01  Richard Biener  <rguenther@suse.de>

	* expr.c (expand_expr_real_1): For expanding TERed defs
	set the current location to that of the def if not UNKNOWN.

From-SVN: r227370

1 files changed, 6 insertions, 4 deletions

diff --git a/gcc/expr.c b/gcc/expr.c
index 1e820b4..ee0c1f9 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -9463,6 +9463,10 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode,
       if (g)
 	{
 	  rtx r;
+	  location_t saved_loc = curr_insn_location ();
+	  location_t loc = gimple_location (g);
+	  if (loc != UNKNOWN_LOCATION)
+	    set_curr_insn_location (loc);
 	  ops.code = gimple_assign_rhs_code (g);
           switch (get_gimple_rhs_class (ops.code))
 	    {
@@ -9484,21 +9488,19 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode,
 	    case GIMPLE_UNARY_RHS:
 	      ops.op0 = gimple_assign_rhs1 (g);
 	      ops.type = TREE_TYPE (gimple_assign_lhs (g));
-	      ops.location = gimple_location (g);
+	      ops.location = loc;
 	      r = expand_expr_real_2 (&ops, target, tmode, modifier);
 	      break;
 	    case GIMPLE_SINGLE_RHS:
 	      {
-		location_t saved_loc = curr_insn_location ();
-		set_curr_insn_location (gimple_location (g));
 		r = expand_expr_real (gimple_assign_rhs1 (g), target,
 				      tmode, modifier, NULL, inner_reference_p);
-		set_curr_insn_location (saved_loc);
 		break;
 	      }
 	    default:
 	      gcc_unreachable ();
 	    }
+	  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;