sh.opt (madjust-unroll): Mark as ignored/obsolete.

2012-03-19  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* config/sh/sh.opt (madjust-unroll): Mark as ignored/obsolete.
	* config/sh/sh.h (TARGET_OPT_DEFAULT): Don't use MASK_ADJUST_UNROLL.
	* doc/invoke.texi (Option Summary): Remove -madjust-unroll.
	(SH Options): Likewise.

From-SVN: r185540

gcc/ChangeLog

+2012-03-19  Sandra Loosemore  <sandra@codesourcery.com>
+
+	* config/sh/sh.opt (madjust-unroll): Mark as ignored/obsolete.
+	* config/sh/sh.h (TARGET_OPT_DEFAULT): Don't use MASK_ADJUST_UNROLL.
+	* doc/invoke.texi (Option Summary): Remove -madjust-unroll.
+	(SH Options): Likewise.
+
 2012-03-19  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.c (get_thread_pointer): Add tp_mode argument.

gcc/config/sh/sh.h

@@ -290,7 +290,7 @@ do { \
 #endif
 
 #ifndef TARGET_OPT_DEFAULT
-#define TARGET_OPT_DEFAULT  MASK_ADJUST_UNROLL
+#define TARGET_OPT_DEFAULT  0
 #endif
 
 #define TARGET_DEFAULT \

gcc/config/sh/sh.opt

@@ -206,8 +206,8 @@ Target Report Mask(ACCUMULATE_OUTGOING_ARGS)
 Reserve space for outgoing arguments in the function prologue
 
 madjust-unroll
-Target Report Mask(ADJUST_UNROLL) Condition(SUPPORT_ANY_SH5)
-Throttle unrolling to avoid thrashing target registers unless the unroll benefit outweighs this
+Target Ignore
+Does nothing.  Preserved for backward compatibility.
 
 mb
 Target Report RejectNegative InverseMask(LITTLE_ENDIAN)

gcc/doc/invoke.texi

@@ -881,7 +881,7 @@ See RS/6000 and PowerPC Options.
 -mieee  -mbitops  -misize  -minline-ic_invalidate -mpadstruct  -mspace @gol
 -mprefergot  -musermode -multcost=@var{number} -mdiv=@var{strategy} @gol
 -mdivsi3_libfunc=@var{name} -mfixed-range=@var{register-range} @gol
--madjust-unroll -mindexed-addressing -mgettrcost=@var{number} -mpt-fixed @gol
+-mindexed-addressing -mgettrcost=@var{number} -mpt-fixed @gol
 -maccumulate-outgoing-args -minvalid-symbols -msoft-atomic @gol
 -mbranch-cost=@var{num} -mcbranchdi -mcmpeqdi -mfused-madd -mpretend-cmove @gol
 -menable-tas}
@@ -18104,12 +18104,6 @@ useful when compiling kernel code.  A register range is specified as
 two registers separated by a dash.  Multiple register ranges can be
 specified separated by a comma.
 
-@item -madjust-unroll
-@opindex madjust-unroll
-Throttle unrolling to avoid thrashing target registers.
-This option only has an effect if the GCC code base supports the
-TARGET_ADJUST_UNROLL_MAX target hook.
-
 @item -mindexed-addressing
 @opindex mindexed-addressing
 Enable the use of the indexed addressing mode for SHmedia32/SHcompact.