[patch] Remove DWARF2_GENERATE_TEXT_SECTION_LABEL.

[Kazu Hirata <kazu at cs dot umass dot edu>]

Hi,

Attached is a patch to remove DWARF2_GENERATE_TEXT_SECTION_LABEL.

It was introduced by

  http://gcc.gnu.org/ml/gcc-patches/1999-07n/msg00533.html

Its last use seems to have been removed by

  http://gcc.gnu.org/ml/gcc-patches/2004-08/msg01020.html

Bootstrapped on i66-pc-linux-gnu.  OK to apply?

Kazu Hirata

2004-10-02  Kazu Hirata  <kazu@cs.umass.edu>

	* defaults.h (DWARF2_GENERATE_TEXT_SECTION_LABEL): Remove.
	* dwarf2out.c (dwarf2out_init): Remove references to
	DWARF2_GENERATE_TEXT_SECTION_LABEL.
	* system.h: Poison DWARF2_GENERATE_TEXT_SECTION_LABEL.
	* doc/tm.texi (DWARF2_GENERATE_TEXT_SECTION_LABEL): Remove.

Index: defaults.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/defaults.h,v
retrieving revision 1.157
diff -u -r1.157 defaults.h
--- defaults.h	25 Sep 2004 14:36:37 -0000	1.157
+++ defaults.h	1 Oct 2004 18:46:22 -0000
@@ -334,16 +334,6 @@
 #endif
 #endif
 
-/* By default, we generate a label at the beginning and end of the
-   text section, and compute the size of the text section by
-   subtracting the two.  However, on some platforms that doesn't
-   work, and we use the section itself, rather than a label at the
-   beginning of it, to indicate the start of the section.  On such
-   platforms, define this to zero.  */
-#ifndef DWARF2_GENERATE_TEXT_SECTION_LABEL
-#define DWARF2_GENERATE_TEXT_SECTION_LABEL 1
-#endif
-
 /* Number of hardware registers that go into the DWARF-2 unwind info.
    If not defined, equals FIRST_PSEUDO_REGISTER  */
 
Index: dwarf2out.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/dwarf2out.c,v
retrieving revision 1.551
diff -u -r1.551 dwarf2out.c
--- dwarf2out.c	1 Oct 2004 05:08:55 -0000	1.551
+++ dwarf2out.c	1 Oct 2004 18:46:25 -0000
@@ -13261,10 +13261,7 @@
   ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0);
   ASM_GENERATE_INTERNAL_LABEL (abbrev_section_label,
 			       DEBUG_ABBREV_SECTION_LABEL, 0);
-  if (DWARF2_GENERATE_TEXT_SECTION_LABEL)
-    ASM_GENERATE_INTERNAL_LABEL (text_section_label, TEXT_SECTION_LABEL, 0);
-  else
-    strcpy (text_section_label, stripattributes (TEXT_SECTION_NAME));
+  ASM_GENERATE_INTERNAL_LABEL (text_section_label, TEXT_SECTION_LABEL, 0);
 
   ASM_GENERATE_INTERNAL_LABEL (debug_info_section_label,
 			       DEBUG_INFO_SECTION_LABEL, 0);
@@ -13287,11 +13284,8 @@
       ASM_OUTPUT_LABEL (asm_out_file, macinfo_section_label);
     }
 
-  if (DWARF2_GENERATE_TEXT_SECTION_LABEL)
-    {
-      text_section ();
-      ASM_OUTPUT_LABEL (asm_out_file, text_section_label);
-    }
+  text_section ();
+  ASM_OUTPUT_LABEL (asm_out_file, text_section_label);
 }
 
 /* A helper function for dwarf2out_finish called through
Index: system.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/system.h,v
retrieving revision 1.229
diff -u -r1.229 system.h
--- system.h	1 Oct 2004 18:45:26 -0000	1.229
+++ system.h	1 Oct 2004 18:46:25 -0000
@@ -653,7 +653,7 @@
 	SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY			   \
 	SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE			   \
 	DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG	   \
-	COLLECT_PARSE_FLAG
+	COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL
 
 /* Hooks that are no longer used.  */
  #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE	\
Index: doc/tm.texi
===================================================================
RCS file: /cvs/gcc/gcc/gcc/doc/tm.texi,v
retrieving revision 1.376
diff -u -r1.376 tm.texi
--- doc/tm.texi	1 Oct 2004 18:45:28 -0000	1.376
+++ doc/tm.texi	1 Oct 2004 18:46:28 -0000
@@ -8075,13 +8075,6 @@
 information not matter how you define @code{DWARF2_FRAME_INFO}.
 @end defmac
 
-@defmac DWARF2_GENERATE_TEXT_SECTION_LABEL
-By default, the Dwarf 2 debugging information generator will generate a
-label to mark the beginning of the text section.  If it is better simply
-to use the name of the text section itself, rather than an explicit label,
-to indicate the beginning of the text section, define this macro to zero.
-@end defmac
-
 @defmac DWARF2_ASM_LINE_DEBUG_INFO
 Define this macro to be a nonzero value if the assembler can generate Dwarf 2
 line debug info sections.  This will result in much more compact line number