[PATCH] Delete obsolete DWARF1 references.

[PATCH] Delete obsolete DWARF1 references.

[Jim Wilson]

I noticed a stray DWARF_DEBUG reference.  The DWARF1 support was removed in
2004.  So I did a quick find|grep and I found two more.  This patch removes
them.

This was tested with quick x86_64-linux and mips-wrs-vxworks builds just to
verify that they still build, and by hand checking the docs to make sure they
are OK.

Committed.

	gcc/
	* common.opt (use_gnu_debug_info_extensions): Delete DWARF_DEBUG from
	comment.
	* config/vx-common.h (DWARF_DEBUGGING_INFO): Delete undef.
	* doc/tm.texi.in (PREFERRED_DEBUGGING_TYPE): Delete DWARF_DEBUG
	reference.
	* doc/tm.texi: Regenerate.
---
 gcc/common.opt         | 2 +-
 gcc/config/vx-common.h | 1 -
 gcc/doc/tm.texi        | 4 ++--
 gcc/doc/tm.texi.in     | 4 ++--
 4 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/gcc/common.opt b/gcc/common.opt
index 28a0185f0cf..ffcbf850216 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -137,7 +137,7 @@ enum debug_info_levels debug_info_level = DINFO_LEVEL_NONE
 
 ; Nonzero means use GNU-only extensions in the generated symbolic
 ; debugging information.  Currently, this only has an effect when
-; write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG.
+; write_symbols is set to DBX_DEBUG or XCOFF_DEBUG.
 Variable
 bool use_gnu_debug_info_extensions
 
diff --git a/gcc/config/vx-common.h b/gcc/config/vx-common.h
index d8f04eced4d..a75f5a00f48 100644
--- a/gcc/config/vx-common.h
+++ b/gcc/config/vx-common.h
@@ -70,7 +70,6 @@ along with GCC; see the file COPYING3.  If not see
 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 
 /* None of these other formats is supported.  */
-#undef DWARF_DEBUGGING_INFO
 #undef DBX_DEBUGGING_INFO
 #undef XCOFF_DEBUGGING_INFO
 #undef VMS_DEBUGGING_INFO
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index f16e73c31b1..b39c7efa415 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -9591,8 +9591,8 @@ A C expression that returns the type of debugging output GCC should
 produce when the user specifies just @option{-g}.  Define
 this if you have arranged for GCC to support more than one format of
 debugging output.  Currently, the allowable values are @code{DBX_DEBUG},
-@code{DWARF_DEBUG}, @code{DWARF2_DEBUG},
-@code{XCOFF_DEBUG}, @code{VMS_DEBUG}, and @code{VMS_AND_DWARF2_DEBUG}.
+@code{DWARF2_DEBUG}, @code{XCOFF_DEBUG}, @code{VMS_DEBUG},
+and @code{VMS_AND_DWARF2_DEBUG}.
 
 When the user specifies @option{-ggdb}, GCC normally also uses the
 value of this macro to select the debugging output format, but with two
diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
index 39f6fcaaa11..57b83a8e542 100644
--- a/gcc/doc/tm.texi.in
+++ b/gcc/doc/tm.texi.in
@@ -6629,8 +6629,8 @@ A C expression that returns the type of debugging output GCC should
 produce when the user specifies just @option{-g}.  Define
 this if you have arranged for GCC to support more than one format of
 debugging output.  Currently, the allowable values are @code{DBX_DEBUG},
-@code{DWARF_DEBUG}, @code{DWARF2_DEBUG},
-@code{XCOFF_DEBUG}, @code{VMS_DEBUG}, and @code{VMS_AND_DWARF2_DEBUG}.
+@code{DWARF2_DEBUG}, @code{XCOFF_DEBUG}, @code{VMS_DEBUG},
+and @code{VMS_AND_DWARF2_DEBUG}.
 
 When the user specifies @option{-ggdb}, GCC normally also uses the
 value of this macro to select the debugging output format, but with two
-- 
2.14.1