[SH] rename option -menable-tas to -mtas

[Oleg Endo <oleg dot endo at t-online dot de>]

Hello,

I think it would be better to rename the option '-menable-tas' (new in
4.8) to '-mtas', since no other SH specific option has an 'enable' in
the name.  Tested with
make all-gcc
make info dvi pdf

OK?

Cheers,
Oleg

ChangeLog:

	* config/sh/sh.opt (menable-tas): Rename to mtas.
	* doc/invoke.texi (SH options): Likewise.
	* config/sh/sync.md: Update comments.

Index: gcc/doc/invoke.texi
===================================================================
--- gcc/doc/invoke.texi	(revision 190723)
+++ gcc/doc/invoke.texi	(working copy)
@@ -891,7 +891,7 @@
 -maccumulate-outgoing-args -minvalid-symbols -msoft-atomic -mhard-atomic @gol
 -mbranch-cost=@var{num} -mzdcbranch -mno-zdcbranch -mcbranchdi -mcmpeqdi @gol
 -mfused-madd -mno-fused-madd -mfsca -mno-fsca -mfsrra -mno-fsrra @gol
--mpretend-cmove -menable-tas}
+-mpretend-cmove -mtas}
 
 @emph{Solaris 2 Options}
 @gccoptlist{-mimpure-text  -mno-impure-text @gol
@@ -18156,8 +18156,8 @@
 @option{-msoft-atomic} option this will only use the instructions
 @code{movli.l} and @code{movco.l} to create atomic sequences.
 
-@item -menable-tas
-@opindex menable-tas
+@item -mtas
+@opindex mtas
 Generate the @code{tas.b} opcode for @code{__atomic_test_and_set}.
 Notice that depending on the particular hardware and software configuration
 this can degrade overall performance due to the operand cache line flushes
Index: gcc/config/sh/sync.md
===================================================================
--- gcc/config/sh/sync.md	(revision 190723)
+++ gcc/config/sh/sync.md	(working copy)
@@ -26,11 +26,11 @@
 ;; In addition to that all SH CPUs support the 'tas.b' instruction, which
 ;; can be optionally used to implement the 'atomic_test_and_set' builtin.
 ;;
-;; tas.b atomic_test_and_set (-menable-tas)
+;; tas.b atomic_test_and_set (-mtas)
 ;;
 ;; Depending on the particular hardware configuration, usage of the 'tas.b'
 ;; instruction might be undesired or even unsafe.  Thus, it has to be
-;; enabled by the user explicitely.  If it is not enabled, the
+;; enabled by the user explicitly.  If it is not enabled, the
 ;; 'atomic_test_and_set' builtin is implemented either with hardware or with
 ;; software atomics, depending on which is enabled.  It is also possible to
 ;; enable the 'tas.b' instruction only, without enabling support for the 
Index: gcc/config/sh/sh.opt
===================================================================
--- gcc/config/sh/sh.opt	(revision 190723)
+++ gcc/config/sh/sh.opt	(working copy)
@@ -327,7 +327,7 @@
 Target Report Var(TARGET_HARD_ATOMIC)
 Use hardware atomic sequences
 
-menable-tas
+mtas
 Target Report RejectNegative Var(TARGET_ENABLE_TAS)
 Use tas.b instruction for __atomic_test_and_set