2009-01-24 H.J. Lu <hongjiu.lu@intel.com>

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

diff --git a/gcc/final.c b/gcc/final.c
index 01689c1..1735a73 100644 (file)
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -664,7 +664,7 @@ insn_current_reference_address (rtx branch)
 /* Compute branch alignments based on frequency information in the
    CFG.  */
 
-static unsigned int
+unsigned int
 compute_alignments (void)
 {
   int log, max_skip, max_log;
@@ -707,7 +707,7 @@ compute_alignments (void)
       edge_iterator ei;
 
       if (!LABEL_P (label)
-         || probably_never_executed_bb_p (bb))
+         || optimize_bb_for_size_p (bb))
        {
          if (dump_file)
            fprintf(dump_file, "BB %4i freq %4i loop %2i loop_depth %2i skipped.\n",
@@ -784,7 +784,10 @@ compute_alignments (void)
     }
 
   if (dump_file)
-    loop_optimizer_finalize ();
+    {
+      loop_optimizer_finalize ();
+      free_dominance_info (CDI_DOMINATORS);
+    }
   return 0;
 }
 
@@ -3346,6 +3349,40 @@ output_asm_label (rtx x)
   assemble_name (asm_out_file, buf);
 }
 
+/* Helper rtx-iteration-function for mark_symbol_refs_as_used and
+   output_operand.  Marks SYMBOL_REFs as referenced through use of
+   assemble_external.  */
+
+static int
+mark_symbol_ref_as_used (rtx *xp, void *dummy ATTRIBUTE_UNUSED)
+{
+  rtx x = *xp;
+
+  /* If we have a used symbol, we may have to emit assembly
+     annotations corresponding to whether the symbol is external, weak
+     or has non-default visibility.  */
+  if (GET_CODE (x) == SYMBOL_REF)
+    {
+      tree t;
+
+      t = SYMBOL_REF_DECL (x);
+      if (t)
+       assemble_external (t);
+
+      return -1;
+    }
+
+  return 0;
+}
+
+/* Marks SYMBOL_REFs in x as referenced through use of assemble_external.  */
+
+void
+mark_symbol_refs_as_used (rtx x)
+{
+  for_each_rtx (&x, mark_symbol_ref_as_used, NULL);
+}
+
 /* Print operand X using machine-dependent assembler syntax.
    The macro PRINT_OPERAND is defined just to control this function.
    CODE is a non-digit that preceded the operand-number in the % spec,
@@ -3366,14 +3403,11 @@ output_operand (rtx x, int code ATTRIBUTE_UNUSED)
   gcc_assert (!x || !REG_P (x) || REGNO (x) < FIRST_PSEUDO_REGISTER);
 
   PRINT_OPERAND (asm_out_file, x, code);
-  if (x && MEM_P (x) && GET_CODE (XEXP (x, 0)) == SYMBOL_REF)
-    {
-      tree t;
-      x = XEXP (x, 0);
-      t = SYMBOL_REF_DECL (x);
-      if (t)
-       assemble_external (t);
-    }
+
+  if (x == NULL_RTX)
+    return;
+
+  for_each_rtx (&x, mark_symbol_ref_as_used, NULL);
 }
 
 /* Print a memory reference operand for address X
@@ -3406,7 +3440,10 @@ output_addr_const (FILE *file, rtx x)
 
     case SYMBOL_REF:
       if (SYMBOL_REF_DECL (x))
-       mark_decl_referenced (SYMBOL_REF_DECL (x));
+       {
+         mark_decl_referenced (SYMBOL_REF_DECL (x));
+         assemble_external (SYMBOL_REF_DECL (x));
+       }
 #ifdef ASM_OUTPUT_SYMBOL_REF
       ASM_OUTPUT_SYMBOL_REF (file, x);
 #else
@@ -4162,6 +4199,10 @@ rest_of_handle_final (void)
   timevar_push (TV_SYMOUT);
   (*debug_hooks->function_decl) (current_function_decl);
   timevar_pop (TV_SYMOUT);
+
+  /* Release the blocks that are linked to DECL_INITIAL() to free the memory.  */
+  DECL_INITIAL (current_function_decl) = error_mark_node;
+
   if (DECL_STATIC_CONSTRUCTOR (current_function_decl)
       && targetm.have_ctors_dtors)
     targetm.asm_out.constructor (XEXP (DECL_RTL (current_function_decl), 0),