2009-10-05 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>

[pf3gnuchains/gcc-fork.git] / gcc / expr.c

diff --git a/gcc/expr.c b/gcc/expr.c
index be3b5bb..5d18435 100644 (file)
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -7110,7 +7110,7 @@ rtx
 expand_expr_real (tree exp, rtx target, enum machine_mode tmode,
                  enum expand_modifier modifier, rtx *alt_rtl)
 {
-  int rn = -1;
+  int lp_nr = 0;
   rtx ret, last = NULL;
 
   /* Handle ERROR_MARK before anybody tries to access its type.  */
@@ -7123,10 +7123,8 @@ expand_expr_real (tree exp, rtx target, enum machine_mode tmode,
 
   if (flag_non_call_exceptions)
     {
-      rn = lookup_expr_eh_region (exp);
-
-      /* If rn < 0, then either (1) tree-ssa not used or (2) doesn't throw.  */
-      if (rn >= 0)
+      lp_nr = lookup_expr_eh_lp (exp);
+      if (lp_nr)
        last = get_last_insn ();
     }
 
@@ -7159,7 +7157,7 @@ expand_expr_real (tree exp, rtx target, enum machine_mode tmode,
   /* If using non-call exceptions, mark all insns that may trap.
      expand_call() will mark CALL_INSNs before we get to this code,
      but it doesn't handle libcalls, and these may trap.  */
-  if (rn >= 0)
+  if (lp_nr)
     {
       rtx insn;
       for (insn = next_real_insn (last); insn;
@@ -7170,8 +7168,8 @@ expand_expr_real (tree exp, rtx target, enum machine_mode tmode,
                 may_trap_p instruction may throw.  */
              && GET_CODE (PATTERN (insn)) != CLOBBER
              && GET_CODE (PATTERN (insn)) != USE
-             && (CALL_P (insn) || may_trap_p (PATTERN (insn))))
-           add_reg_note (insn, REG_EH_REGION, GEN_INT (rn));
+             && insn_could_throw_p (insn))
+           make_reg_eh_region_note (insn, 0, lp_nr);
        }
     }
 
@@ -7239,6 +7237,7 @@ expand_expr_real_2 (sepops ops, rtx target, enum machine_mode tmode,
 
   switch (code)
     {
+    case NON_LVALUE_EXPR:
     case PAREN_EXPR:
     CASE_CONVERT:
       if (treeop0 == error_mark_node)
@@ -9490,7 +9489,6 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
     case GOTO_EXPR:
     case SWITCH_EXPR:
     case ASM_EXPR:
-    case RESX_EXPR:
       /* Expanded in cfgexpand.c.  */
       gcc_unreachable ();
 
@@ -9519,12 +9517,6 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
       /* Lowered by gimplify.c.  */
       gcc_unreachable ();
 
-    case EXC_PTR_EXPR:
-      return get_exception_pointer ();
-
-    case FILTER_EXPR:
-      return get_exception_filter ();
-
     case FDESC_EXPR:
       /* Function descriptors are not valid except for as
         initialization constants, and should not be expanded.  */