re PR driver/44076 (-MT <target> behaves different as -MT<target> (w/o space))

	PR driver/44076
	* opts.h (struct cl_option): Add alias_arg, neg_alias_arg and
	alias_target fields.
	* opt-functions.awk (opt_sanitized_name): Don't handle
	finline-limit=, Wlarger-than= and ftemplate-depth= specially.
	* optc-gen.awk: Generate alias fields.
	* opth-gen.awk: Explicitly give values for OPT_* enum constants.
	Don't generate such constants for aliases.
	* opts-common.c (generate_canonical_option): New.
	(decode_cmdline_option): Handle aliases.  Use
	generate_canonical_option for known options instead of copying the
	input option text.
	* doc/options.texi (Alias): Document.
	* common.opt (W, Wlarger-than-, aux-info=, finline-limit-,
	fstack-check, specs): Mark as aliases.
	* gcc.c (driver_handle_option): Canonicalize -L options to joined
	arguments.
	(driver_handle_option): Don't handle OPT_specs.
	* opts.c (common_handle_option): Don't handle options marked as
	aliases.
	(enable_warning_as_error): Handle aliases.
	* stor-layout.c (layout_decl): Use OPT_Wlarger_than_ instead of
	OPT_Wlarger_than_eq.
	* tree-optimize.c (tree_rest_of_compilation): Use
	OPT_Wlarger_than_ instead of OPT_Wlarger_than_eq.

c-family:
	* c.opt (Wcomments, Werror-implicit-function-declaration,
	ftemplate-depth-, std=c89, std=c9x, std=gnu89, std=gnu9x,
	std=iso9899:1990, std=iso9899:1999, std=iso9899:199x): Mark as
	aliases.
	* c-common.c (option_codes): Use OPT_Wcomment instead of
	OPT_Wcomments.
	* c-opts.c (warning_as_error_callback, c_common_handle_option):
	Don't handle options marked as aliases.

java:
	* lang.opt (CLASSPATH, bootclasspath, classpath, encoding,
	fCLASSPATH=): Mark as Java options and as aliases.
	* jvspec.c (jvgenmain_spec): Don't handle -fCLASSPATH*.
	(lang_specific_driver): Don't handle options marked as aliases.
	* lang.c (java_handle_option): Don't handle OPT_fCLASSPATH_.

testsuite:
	* gcc.dg/cpp/warn-comments-3.c: New.  Based on warn-comments-2.c
	but using -Werror=comment.
	* gcc.dg/cpp/warn-comments.c, gcc.dg/cpp/warn-comments-2.c: Adjust
	expected error messages.

From-SVN: r163770

1 files changed, 6 insertions, 6 deletions

diff --git a/gcc/common.opt b/gcc/common.opt
index 2147be83e64..d30e41c8651 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -88,7 +88,7 @@ S
 Driver
 
 W
-Common RejectNegative Var(extra_warnings) Warning
+Common RejectNegative Warning Alias(Wextra)
 This switch is deprecated; use -Wextra instead
 
 Wa,
@@ -153,7 +153,7 @@ Common Var(warn_inline) Warning
 Warn when an inlined function cannot be inlined
 
 Wlarger-than-
-Common RejectNegative Joined UInteger Warning Undocumented
+Common RejectNegative Joined Warning Undocumented Alias(Wlarger-than=)
 
 Wlarger-than=
 Common RejectNegative Joined UInteger Warning
@@ -301,7 +301,7 @@ Common Separate
 -aux-info <file>	Emit declaration information into <file>
 
 aux-info=
-Common Joined
+Common Joined Alias(aux-info)
 
 auxbase
 Common Separate RejectDriver
@@ -750,7 +750,7 @@ Common Report Var(flag_inline_functions_called_once) Init(1) Optimization
 Integrate functions called once into their callers
 
 finline-limit-
-Common RejectNegative Joined UInteger
+Common RejectNegative Joined Alias(finline-limit=)
 
 finline-limit=
 Common RejectNegative Joined UInteger
@@ -1259,7 +1259,7 @@ Common Report RejectNegative Joined
 -fstack-check=[no|generic|specific]	Insert stack checking code into the program
 
 fstack-check
-Common Report
+Common Alias(fstack-check=, specific, no)
 Insert stack checking code into the program.  Same as -fstack-check=specific
 
 fstack-limit
@@ -1755,7 +1755,7 @@ shared-libgcc
 Driver
 
 specs
-Driver Separate
+Driver Separate Alias(specs=)
 
 specs=
 Driver Joined