dwarf2out.c (gen_producer_string): Omit command line switch if CL_NO_DWARF_RECORD flag set.

gcc/ChangeLog
	* dwarf2out.c (gen_producer_string): Omit command line switch if
	CL_NO_DWARF_RECORD flag set.
	* opts.h (CL_NO_DWARF_RECORD): New.
	* opt-functions.awk (switch_flags): Add NoDWARFRecord.
	* doc/options.texi: Document NoDWARFRecord option flag.

gcc/fortran/ChangeLog
	* lang.opt (-cpp=): Mark flag NoDWARFRecord.

From-SVN: r190648

gcc/ChangeLog

+2012-08-24  Simon Baldwin  <simonb@google.com>
+
+	* dwarf2out.c (gen_producer_string): Omit command line switch if
+	CL_NO_DWARF_RECORD flag set.
+	* opts.h (CL_NO_DWARF_RECORD): New.
+	* opt-functions.awk (switch_flags): Add NoDWARFRecord.
+	* doc/options.texi: Document NoDWARFRecord option flag.
+
 2012-08-24  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR debug/52857

gcc/doc/options.texi

@@ -468,4 +468,8 @@ of @option{-@var{opt}}, if not explicitly set. It is possible to
 specify several different languages.  Each @var{language} must have
 been declared by an earlier @code{Language} record.  @xref{Option file
 format}.
+
+@item NoDWARFRecord
+The option is omitted from the producer string written by
+@option{-grecord-gcc-switches}.
 @end table

gcc/dwarf2out.c

@@ -18142,6 +18142,9 @@ gen_producer_string (void)
 	/* Ignore these.  */
 	continue;
       default:
+        if (cl_options[save_decoded_options[j].opt_index].flags
+	    & CL_NO_DWARF_RECORD)
+	  continue;
         gcc_checking_assert (save_decoded_options[j].canonical_option[0][0]
 			     == '-');
         switch (save_decoded_options[j].canonical_option[0][1])

gcc/fortran/ChangeLog

+2012-08-24  Simon Baldwin  <simonb@google.com>
+
+	* lang.opt (-cpp=): Mark flag NoDWARFRecord.
+
 2012-08-23  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/54350

gcc/fortran/lang.opt

@@ -295,7 +295,7 @@ Fortran Negative(nocpp)
 Enable preprocessing
 
 cpp=
-Fortran Joined Negative(nocpp) Undocumented
+Fortran Joined Negative(nocpp) Undocumented NoDWARFRecord
 ; Internal option generated by specs from -cpp.
 
 nocpp

gcc/opt-functions.awk

@@ -103,6 +103,7 @@ function switch_flags (flags)
 	  test_flag("JoinedOrMissing", flags, " | CL_JOINED") \
 	  test_flag("Separate", flags, " | CL_SEPARATE") \
 	  test_flag("Undocumented", flags,  " | CL_UNDOCUMENTED") \
+	  test_flag("NoDWARFRecord", flags,  " | CL_NO_DWARF_RECORD") \
 	  test_flag("Warning", flags,  " | CL_WARNING") \
 	  test_flag("Optimization", flags,  " | CL_OPTIMIZATION")
 	sub( "^0 \\| ", "", result )

gcc/opts.h

@@ -145,6 +145,7 @@ extern const unsigned int cl_lang_count;
 #define CL_JOINED		(1U << 22) /* If takes joined argument.  */
 #define CL_SEPARATE		(1U << 23) /* If takes a separate argument.  */
 #define CL_UNDOCUMENTED		(1U << 24) /* Do not output with --help.  */
+#define CL_NO_DWARF_RECORD	(1U << 25) /* Do not add to producer string.  */
 
 /* Flags for an enumerated option argument.  */
 #define CL_ENUM_CANONICAL	(1 << 0) /* Canonical for this value.  */