re PR target/5362 (Undocumented target options)

        PR target/5362
        * config/mcore/mcore.opt: Remove deprecated m4align and m8align
        options.
        Add description to mno-lsim option.
        * config/mcore/mcore.h: Remove comment about deprecated m4align
        option.
        (TARGET_DEFAULT): Remove deprecated MASK_M8ALIGN.
        * doc/invoke.texi: Add description of mno-lsim and
        mstack-increment options.

From-SVN: r144783

gcc/ChangeLog

 2009-03-11  Nick Clifton  <nickc@redhat.com>
 
 	PR target/5362
+	* config/mcore/mcore.opt: Remove deprecated m4align and m8align
+	options.
+	Add description to mno-lsim option.
+	* config/mcore/mcore.h: Remove comment about deprecated m4align
+	option.
+	(TARGET_DEFAULT): Remove deprecated MASK_M8ALIGN.
+	* doc/invoke.texi: Add description of mno-lsim and
+	mstack-increment options.
+
 	* config/fr30/fr30.opt: Document the -mno-lsim option.
 	* doc/invoke.texi: Add descriptions of the FR30's -msmall-model
 	and -mno-lsim options.

gcc/config/mcore/mcore.h

@@ -50,8 +50,6 @@
     }									  \
   while (0)
 
-/* If -m4align is ever re-enabled then add this line to the definition of CPP_SPEC
-   %{!m4align:-D__MCORE_ALIGN_8__} %{m4align:-D__MCORE__ALIGN_4__}.  */
 #undef  CPP_SPEC
 #define CPP_SPEC "%{m210:%{mlittle-endian:%ethe m210 does not have little endian support}}"
 
@@ -67,7 +65,6 @@
 
 #define TARGET_DEFAULT	\
   (MASK_HARDLIT		\
-   | MASK_8ALIGN	\
    | MASK_DIV		\
    | MASK_RELAX_IMM	\
    | MASK_M340		\

gcc/config/mcore/mcore.opt

 ; Options for the Motorola MCore port of the compiler.
 
-; Copyright (C) 2005, 2007 Free Software Foundation, Inc.
+; Copyright (C) 2005, 2007, 2009 Free Software Foundation, Inc.
 ;
 ; This file is part of GCC.
 ;
@@ -26,18 +26,10 @@ m340
 Target RejectNegative Report Mask(M340)
 Generate code for the M*Core M340
 
-m4align
-Target RejectNegative Report InverseMask(8ALIGN)
-Set maximum alignment to 4
-
 m4byte-functions
 Target Report Mask(OVERALIGN_FUNC)
 Force functions to be aligned to a 4 byte boundary
 
-m8align
-Target RejectNegative Report Mask(8ALIGN)
-Set maximum alignment to 8
-
 mbig-endian
 Target RejectNegative Report InverseMask(LITTLE_END)
 Generate big-endian code
@@ -60,7 +52,8 @@ Generate little-endian code
 
 ; Not used by the compiler proper.
 mno-lsim
-Target RejectNegative Undocumented
+Target RejectNegative
+Assume that run-time support has been provided, so omit -lsim from the linker command line
 
 mrelax-immediates
 Target Report Mask(RELAX_IMM)

gcc/doc/invoke.texi

@@ -12438,6 +12438,20 @@ Generate code for a little endian target.
 @opindex m210
 @opindex m340
 Generate code for the 210 processor.
+
+@item -mno-lsim
+@opindex no-lsim
+Assume that run-time support has been provided and so omit the
+simulator library (@file{libsim.a)} from the linker command line.
+
+@item -mstack-increment=@var{size}
+@opindex mstack-increment
+Set the maximum amount for a single stack increment operation.  Large
+values can increase the speed of progrqams which contain functions
+that need a large amount of stack space, but they can also trigger a
+segmentation fault if the stack is extended too much.  The default
+value is 0x1000.
+
 @end table
 
 @node MIPS Options