[ColdFire 13/63] Remove some RejectNegatives

[Richard Sandiford]

Some of the boolean m68k options have no negative counterpart.
There seems to be no specific reason for this, as the negatives
would work, so this patch adds them.  -mno-bitfield is now a
(more canonical) synonym for -mnobitfield.

(I suppose that before the .opt transition, it was more effort to add
boolean options with negative counterparts, whereas the opposite is
now true.  As before, I'd tried to preserve existing practice when
converting the m68k port.)

The patch also resorts m68k.opt into alphabetical order.

Richard


gcc/
200x-xx-xx  Nathan Sidwell  <nathan@codesourcery.com>
	    Richard Sandiford  <richard@codesourcery.com>

	* doc/invoke.texi: Document -mno-bitfield, -mno-rtd and -mno-short.
	* config/m68k/m68k.opt: Resort options.
	(mbitfield, mrtd, mshort): Remove RejectNegative properties.

Index: gcc/doc/invoke.texi
===================================================================
--- gcc/doc/invoke.texi	2007-01-10 08:33:02.000000000 +0000
+++ gcc/doc/invoke.texi	2007-01-10 10:18:48.000000000 +0000
@@ -583,9 +583,9 @@ Objective-C and Objective-C++ Dialects}.
 @gccoptlist{-march=@var{arch}  -mcpu=@var{cpu}  -mtune=@var{tune}
 -m68000  -m68020  -m68020-40  -m68020-60  -m68030  -m68040 @gol
 -m68060  -mcpu32  -m5200  -m5206e  -m528x  -m5307  -m5407 @gol
--mcfv4e  -mbitfield  -mc68000  -mc68020 @gol
--mnobitfield  -mrtd  -mdiv  -mno-div  -mshort @gol
--mhard-float  -m68881  -msoft-float  -mpcrel @gol
+-mcfv4e  -mbitfield  -mno-bitfield  -mc68000  -mc68020 @gol
+-mnobitfield  -mrtd  -mno-rtd  -mdiv  -mno-div  -mshort @gol
+-mno-short  -mhard-float  -m68881  -msoft-float  -mpcrel @gol
 -malign-int  -mstrict-align  -msep-data  -mno-sep-data @gol
 -mshared-library-id=n  -mid-shared-library  -mno-id-shared-library}
 
@@ -10510,8 +10510,14 @@ Consider type @code{int} to be 16 bits w
 Additionally, parameters passed on the stack are also aligned to a
 16-bit boundary even on targets whose API mandates promotion to 32-bit.
 
+@item -mno-short
+@opindex -mno-short
+Do not consider type @code{int} to be 16 bits wide.  This is the default.
+
 @item -mnobitfield
+@itemx -mno-bitfield
 @opindex mnobitfield
+@opindex mno-bitfield
 Do not use the bit-field instructions.  The @option{-m68000}, @option{-mcpu32}
 and @option{-m5200} options imply @w{@option{-mnobitfield}}.
 
@@ -10545,6 +10551,11 @@ harmlessly ignored.)
 The @code{rtd} instruction is supported by the 68010, 68020, 68030,
 68040, 68060 and CPU32 processors, but not by the 68000 or 5200.
 
+@item -mno-rtd
+@opindex mno-rtd
+Do not use the calling conventions selected by @option{-mrtd}.
+This is the default.
+
 @item -malign-int
 @itemx -mno-align-int
 @opindex malign-int
Index: gcc/config/m68k/m68k.opt
===================================================================
--- gcc/config/m68k/m68k.opt	2007-01-10 08:33:02.000000000 +0000
+++ gcc/config/m68k/m68k.opt	2007-01-10 08:33:02.000000000 +0000
@@ -39,10 +39,6 @@ m5407
 Target RejectNegative
 Generate code for a 5407
 
-mcfv4e
-Target RejectNegative
-Generate code for a ColdFire v4e
-
 m68000
 Target RejectNegative
 Generate code for a 68000
@@ -101,7 +97,7 @@ Target RejectNegative Joined
 Specify the name of the target architecture
 
 mbitfield
-Target Report RejectNegative Mask(BITFIELD)
+Target Report Mask(BITFIELD)
 Use the bit-field instructions
 
 mc68000
@@ -112,6 +108,10 @@ mc68020
 Target RejectNegative
 Generate code for a 68020
 
+mcfv4e
+Target RejectNegative
+Generate code for a ColdFire v4e
+
 mcpu=
 Target RejectNegative Joined
 Specify the target CPU
@@ -149,7 +149,7 @@ Target Report Mask(PCREL)
 Generate pc-relative code
 
 mrtd
-Target Report RejectNegative Mask(RTD)
+Target Report Mask(RTD)
 Use different calling convention using 'rtd'
 
 msep-data
@@ -161,7 +161,7 @@ Target RejectNegative Joined UInteger
 ID of shared library to build
 
 mshort
-Target Report RejectNegative Mask(SHORT)
+Target Report Mask(SHORT)
 Consider type 'int' to be 16 bits wide
 
 msoft-float