[SH] Add TARGET_DYNSHIFT macro

[Oleg Endo]

Hello,

Currently the check for availability of dynamic shift instructions on a
particular SH target is repeated in several places.  The attached patch
adds a new macro for that.

Tested with 'make all'.  CSiBE result-size (-m4-single -ml
-mpretend-cmove) also doesn't show any change.

OK?

Cheers,
Oleg

ChangeLog:

	* config/sh/sh.h (TARGET_DYNSHIFT): New macro.
	(SH_DYNAMIC_SHIFT_COST): Use it.
	* config/sh/sh.c (expand_ashiftrt, shl_sext_kind): Likewise.
	(sh_dynamicalize_shift_p): Add TARGET_DYNSHIFT condition.  Add 
	sanity check for input value.  Add function description.
	* config/sh/sh.md (ashlsi3, ashlsi3_std, ashrsi3_d, lshrsi3, 
	lshrsi3_d): Use TARGET_DYNSHIFT.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: sh_target_dynshift.patch
Type: text/x-patch
Size: 4394 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20120722/4706a299/attachment.bin>