From d327457f172ab91732d0789bf925c7510f5e1015 Mon Sep 17 00:00:00 2001
From: Joern Rennecke <joern.rennecke@embecosm.com>
Date: Mon, 5 Nov 2012 15:18:10 +0000
Subject: md.texi (Defining Attributes): Document that we are defining
 HAVE_ATTR_name macors as 1 for defined attributes...

	* doc/md.texi (Defining Attributes): Document that we are defining
	HAVE_ATTR_name macors as 1 for defined attributes, and as 0
	for undefined special attributes.
	* final.c (asm_insn_count, align_fuzz): Always define.
	(insn_current_reference_address): Likewise.
	(init_insn_lengths): Use if (HAVE_ATTR_length) instead of
	#ifdef HAVE_ATTR_length.
	(get_attr_length_1, shorten_branches, final): Likewise.
	(final_scan_insn, output_asm_name): Likewise.
	* genattr.c (gen_attr): Define HAVE_ATTR_name macros for
	defined attributes as 1.
	Remove ancient get_attr_alternative compatibility code.
	For special purpose attributes not provided, define HAVE_ATTR_name
	as 0.
	In case no length attribute is given, provide stub definitions
	for insn_*_length* functions, and also include insn-addr.h.
	In case no enabled attribute is given, provide stub definition.
	* genattrtab.c (write_length_unit_log): Always write a definition.
	* hooks.c (hook_int_rtx_1, hook_int_rtx_unreachable): New functions.
	* hooks.h (hook_int_rtx_1, hook_int_rtx_unreachable): Declare.
	* lra-int.h (struct lra_insn_recog_data): Make member
	alternative_enabled_p unconditional.
	* lra.c (free_insn_recog_data): Use if (HAVE_ATTR_length) instead of
	#ifdef HAVE_ATTR_length.
	(lra_set_insn_recog_data): Likewise.  Make initialization of
	alternative_enabled_p unconditional.
	(lra_update_insn_recog_data): Use #if instead of #ifdef for
	HAVE_ATTR_enabled.
	* recog.c [!HAVE_ATTR_enabled] (get_attr_enabled): Don't define.
	(extract_insn): Check HAVE_ATTR_enabled.
	(gate_handle_split_before_regstack): Use #if instead of
	#if defined for HAVE_ATTR_length.

From-SVN: r193168
---
 gcc/genattrtab.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

(limited to 'gcc/genattrtab.c')

diff --git a/gcc/genattrtab.c b/gcc/genattrtab.c
index 19732ba..cef7d40 100644
--- a/gcc/genattrtab.c
+++ b/gcc/genattrtab.c
@@ -1636,14 +1636,15 @@ write_length_unit_log (FILE *outf)
   unsigned int length_unit_log, length_or;
   int unknown = 0;
 
-  if (length_attr == 0)
-    return;
-  length_or = or_attr_value (length_attr->default_val->value, &unknown);
-  for (av = length_attr->first_value; av; av = av->next)
-    for (ie = av->first_insn; ie; ie = ie->next)
-      length_or |= or_attr_value (av->value, &unknown);
+  if (length_attr)
+    {
+      length_or = or_attr_value (length_attr->default_val->value, &unknown);
+      for (av = length_attr->first_value; av; av = av->next)
+	for (ie = av->first_insn; ie; ie = ie->next)
+	  length_or |= or_attr_value (av->value, &unknown);
+    }
 
-  if (unknown)
+  if (length_attr == NULL || unknown)
     length_unit_log = 0;
   else
     {
-- 
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