opts: do not allow Separate+Joined ending with =

Do not allow strange option format:
-msmall-data-limit= 11.

For -output-pch we need to use Separate syntax as lang spec
rules automatically append a space.

	PR target/105355

gcc/ChangeLog:

	* config/riscv/riscv.opt: Remove Separate from
	-msmall-data-limit=.
	* optc-gen.awk: Report error for the described situation.
	* gcc.cc: Use Separate syntax.
	* opts.cc (gen_command_line_string): Change option name.

gcc/c-family/ChangeLog:

	* c-opts.cc (c_common_handle_option): Change option name.
	* c.opt: Remove Joined and use Separate option.

gcc/cp/ChangeLog:

	* lang-specs.h: Use Separate syntax.

gcc/objc/ChangeLog:

	* lang-specs.h: Use Separate syntax.

gcc/objcp/ChangeLog:

	* lang-specs.h: Use Separate syntax.

gcc/c-family/c-opts.cc

@@ -300,7 +300,7 @@ c_common_handle_option (size_t scode, const char *arg, HOST_WIDE_INT value,
       result = false;
       break;
 
-    case OPT__output_pch_:
+    case OPT__output_pch:
       pch_file = arg;
       break;
 

gcc/c-family/c.opt

@@ -135,8 +135,8 @@ C ObjC C++ ObjC++ Separate Alias(o)
 -output=
 C ObjC C++ ObjC++ Joined Alias(o)
 
--output-pch=
-C ObjC C++ ObjC++ Joined Separate
+-output-pch
+C ObjC C++ ObjC++ Separate
 
 -pedantic
 C ObjC C++ ObjC++ Alias(pedantic)

gcc/config/riscv/riscv.opt

@@ -92,7 +92,7 @@ Target RejectNegative Joined Var(riscv_cpu_string)
 -mcpu=PROCESSOR	Use architecture of and optimize the output for PROCESSOR.
 
 msmall-data-limit=
-Target Joined Separate UInteger Var(g_switch_value) Init(8)
+Target Joined UInteger Var(g_switch_value) Init(8)
 -msmall-data-limit=N	Put global and static data smaller than <number> bytes into a special section (on some targets).
 
 msave-restore

gcc/cp/lang-specs.h

@@ -55,7 +55,7 @@ along with GCC; see the file COPYING3.  If not see
       "  %{!fsyntax-only:"
       "    %{!S:-o %g.s%V}"
       "    %{!fmodule-*:%{!fmodules-*:%{!fdump-ada-spec*:"
-      "	         %{!o*:--output-pch=%i.gch}%W{o*:--output-pch=%*}}}}}"
+      "	         %{!o*:--output-pch %i.gch}%W{o*:--output-pch %*}}}}}"
       "}}}",
      CPLUSPLUS_CPP_SPEC, 0, 0},
   {"@c++-system-header",
@@ -76,7 +76,7 @@ along with GCC; see the file COPYING3.  If not see
       "  %{!fsyntax-only:"
       "    %{!S:-o %g.s%V}"
       "    %{!fmodule-*:%{!fmodules-*:%{!fdump-ada-spec*:"
-      "	         %{!o*:--output-pch=%i.gch}%W{o*:--output-pch=%*}}}}}"
+      "	         %{!o*:--output-pch %i.gch}%W{o*:--output-pch %*}}}}}"
       "}}}",
      CPLUSPLUS_CPP_SPEC, 0, 0},
   {"@c++-user-header",
@@ -96,7 +96,7 @@ along with GCC; see the file COPYING3.  If not see
       "  %{!fsyntax-only:"
       "    %{!S:-o %g.s%V}"
       "    %{!fmodule-*:%{!fmodules-*:%{!fdump-ada-spec*:"
-      "	         %{!o*:--output-pch=%i.gch}%W{o*:--output-pch=%*}}}}}"
+      "	         %{!o*:--output-pch %i.gch}%W{o*:--output-pch %*}}}}}"
       "}}}",
      CPLUSPLUS_CPP_SPEC, 0, 0},
   {"@c++",

gcc/gcc.cc

@@ -1462,13 +1462,13 @@ static const struct compiler default_compilers[] =
 		    cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
 			%(cc1_options)\
 			%{!fsyntax-only:%{!S:-o %g.s} \
-			    %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
-					       %W{o*:--output-pch=%*}}%V}}\
+			    %{!fdump-ada-spec*:%{!o*:--output-pch %i.gch}\
+					       %W{o*:--output-pch %*}}%V}}\
 	  %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
 		cc1 %(cpp_unique_options) %(cc1_options)\
 		    %{!fsyntax-only:%{!S:-o %g.s} \
-		        %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
-					   %W{o*:--output-pch=%*}}%V}}}}}}}", 0, 0, 0},
+		        %{!fdump-ada-spec*:%{!o*:--output-pch %i.gch}\
+					   %W{o*:--output-pch %*}}%V}}}}}}}", 0, 0, 0},
   {".i", "@cpp-output", 0, 0, 0},
   {"@cpp-output",
    "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},

gcc/objc/lang-specs.h

@@ -41,12 +41,12 @@ along with GCC; see the file COPYING3.  If not see
 %eGNU Objective C no longer supports traditional compilation}\
 	%{save-temps*|no-integrated-cpp:cc1obj -E %(cpp_options) -o %{save-temps*:%b.mi} %{!save-temps*:%g.mi} \n\
 	    cc1obj -fpreprocessed %b.mi %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
-                        -o %g.s %{!o*:--output-pch=%i.gch}\
-                        %W{o*:--output-pch=%*}%V}\
+                        -o %g.s %{!o*:--output-pch %i.gch}\
+                        %W{o*:--output-pch %*}%V}\
 	%{!save-temps*:%{!no-integrated-cpp:\
 	    cc1obj %(cpp_unique_options) %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
-                        -o %g.s %{!o*:--output-pch=%i.gch}\
-                        %W{o*:--output-pch=%*}%V}}}}}", 0, 0, 0},
+                        -o %g.s %{!o*:--output-pch %i.gch}\
+                        %W{o*:--output-pch %*}%V}}}}}", 0, 0, 0},
   {".mi", "@objective-c-cpp-output", 0, 0, 0},
   {"@objective-c-cpp-output",
      "%{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\

gcc/objcp/lang-specs.h

@@ -37,7 +37,7 @@ along with GCC; see the file COPYING3.  If not see
       cc1objplus %{save-temps*|no-integrated-cpp:-fpreprocessed %{save-temps*:%b.mii} %{!save-temps*:%g.mii}}\
 	      %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}\
 	%(cc1_options) %2\
-        -o %g.s %{!o*:--output-pch=%i.gch} %W{o*:--output-pch=%*}%V}}}",
+        -o %g.s %{!o*:--output-pch %i.gch} %W{o*:--output-pch %*}%V}}}",
      CPLUSPLUS_CPP_SPEC, 0, 0},
   {"@objective-c++",
     "%{E|M|MM:cc1objplus -E %(cpp_options) %2 %(cpp_debug_options)}\

gcc/optc-gen.awk

@@ -342,6 +342,13 @@ for (i = 0; i < n_opts; i++) {
 	len = length (opts[i]);
 	enum = opt_enum(opts[i])
 
+	# Do not allow Joined and Separate properties if
+	# an options ends with '='.
+	if (flag_set_p("Joined", flags[i]) && flag_set_p("Separate", flags[i]) && opts[i] ~ "=$") {
+		print "#error Option '" opts[i] "' ending with '=' cannot have " \
+			"both Joined and Separate properties"
+	}
+
 	# If this switch takes joined arguments, back-chain all
 	# subsequent switches to it for which it is a prefix.  If
 	# a later switch S is a longer prefix of a switch T, T

gcc/opts.cc

@@ -3639,7 +3639,7 @@ gen_command_line_string (cl_decoded_option *options,
       case OPT_SPECIAL_input_file:
       case OPT_grecord_gcc_switches:
       case OPT_frecord_gcc_switches:
-      case OPT__output_pch_:
+      case OPT__output_pch:
       case OPT_fdiagnostics_show_location_:
       case OPT_fdiagnostics_show_option:
       case OPT_fdiagnostics_show_caret: