2012-12-19  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* target.def: Define canonicalize_comparison hook.
	* targhooks.h (default_canonicalize_comparison): New prototype.
	* targhooks.c (default_canonicalize_comparison): New function.
	* doc/tm.texi: Add documentation for the new target hook.
	* doc/tm.texi.in: Likewise.
	* combine.c (try_combine): Adjust to use the target hook.
	* config/alpha/alpha.h (CANONICALIZE_COMPARISON): Remove macro
	definition.
	* config/alpha/alpha.c (alpha_canonicalize_comparison): New
	function.
	(TARGET_CANONICALIZE_COMPARISON): New macro definition.
	* config/arm/arm-protos.h (arm_canonicalize_comparison): Remove
	prototype.
	* config/arm/arm.c (arm_canonicalize_comparison): Add new
	parameter.
	(TARGET_CANONICALIZE_COMPARISON): New macro definition.
	* config/arm/arm.h (CANONICALIZE_COMPARISON): Remove macro
	definition.
	* config/s390/s390-protos.h (s390_canonicalize_comparison): Remove
	prototype.
	* config/s390/s390.c (s390_canonicalize_comparison): Add new
	parameter.
	(TARGET_CANONICALIZE_COMPARISON): New macro definition.
	* config/s390/s390.h (CANONICALIZE_COMPARISON): Remove macro
	definition.
	* config/sh/sh-protos.h (sh_canonicalize_comparison): Remove
	prototype.
	* config/sh/sh.c (sh_canonicalize_comparison): Add new prototype.  New
	function overloading the old one.
	(TARGET_CANONICALIZE_COMPARISON): New macro definition.
	* config/sh/sh.h (CANONICALIZE_COMPARISON): Remove macro
	definition.
	* config/spu/spu.c (spu_canonicalize_comparison): New function.
	(TARGET_CANONICALIZE_COMPARISON): New macro definition.
	* config/spu/spu.h (CANONICALIZE_COMPARISON): Remove macro
	definition.

From-SVN: r194608