final.c (final_scan_insn): Replace TARGET_UNWIND_INFO macro check by unwind_emit hook NULL check.

2010-07-08  Kai Tietz  <kai.tietz@onevision.com>

	* final.c (final_scan_insn): Replace
	TARGET_UNWIND_INFO macro check by unwind_emit
	hook NULL check.
	* targhooks.c (default_unwind_emit): Removed.
	* targhooks.h (default_unwind_emit): Likewise.
	* target.def (unwind_emit): Set default value to NULL.

From-SVN: r161972

gcc/ChangeLog

 2010-07-08  Kai Tietz  <kai.tietz@onevision.com>
 
+	* final.c (final_scan_insn): Replace
+	TARGET_UNWIND_INFO macro check by unwind_emit
+	hook NULL check.
+	* targhooks.c (default_unwind_emit): Removed.
+	* targhooks.h (default_unwind_emit): Likewise.
+	* target.def (unwind_emit): Set default value to NULL.
+
 	* config/i386/i386-protos.h (ix86_asm_output_function_label):
 	New prototype.
 	* config/i386/i386.c (ix86_function_ms_hook_prologue): Check

gcc/final.c

@@ -1850,9 +1850,8 @@ final_scan_insn (rtx insn, FILE *file, int optimize ATTRIBUTE_UNUSED,
 	  break;
 
 	case NOTE_INSN_BASIC_BLOCK:
-#ifdef TARGET_UNWIND_INFO
-	  targetm.asm_out.unwind_emit (asm_out_file, insn);
-#endif
+	  if (targetm.asm_out.unwind_emit)
+	    targetm.asm_out.unwind_emit (asm_out_file, insn);
 
 	  if (flag_debug_asm)
 	    fprintf (asm_out_file, "\t%s basic block %d\n",
@@ -2659,12 +2658,11 @@ final_scan_insn (rtx insn, FILE *file, int optimize ATTRIBUTE_UNUSED,
 	    return new_rtx;
 	  }
 
-#ifdef TARGET_UNWIND_INFO
 	/* ??? This will put the directives in the wrong place if
 	   get_insn_template outputs assembly directly.  However calling it
 	   before get_insn_template breaks if the insns is split.  */
-	targetm.asm_out.unwind_emit (asm_out_file, insn);
-#endif
+	if (targetm.asm_out.unwind_emit)
+	  targetm.asm_out.unwind_emit (asm_out_file, insn);
 
 	if (CALL_P (insn))
 	  {

gcc/target.def

@@ -150,7 +150,7 @@ DEFHOOK
 (unwind_emit,
  "",
  void, (FILE *stream, rtx insn),
- default_unwind_emit)
+ NULL)
 
 /* Output an internal label.  */
 DEFHOOK

gcc/targhooks.c

@@ -316,16 +316,6 @@ hook_callee_copies_named (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
   return named;
 }
 
-/* Emit any directives required to unwind this instruction.  */
-
-void
-default_unwind_emit (FILE * stream ATTRIBUTE_UNUSED,
-		     rtx insn ATTRIBUTE_UNUSED)
-{
-  /* Should never happen.  */
-  gcc_unreachable ();
-}
-
 /* Emit to STREAM the assembler syntax for insn operand X.  */
 
 void

gcc/targhooks.h

@@ -62,7 +62,6 @@ extern bool hook_pass_by_reference_must_pass_in_stack
 extern bool hook_callee_copies_named
   (CUMULATIVE_ARGS *ca, enum machine_mode, const_tree, bool);
 
-extern void default_unwind_emit (FILE *, rtx);
 extern void default_print_operand (FILE *, rtx, int);
 extern void default_print_operand_address (FILE *, rtx);
 extern bool default_print_operand_punct_valid_p (unsigned char);