2009-09-03  Daniel Gutson  <dgutson@codesourcery.com>

	* config/arm/arm.md (UNSPEC_RBIT): New constant.
	(rbitsi2): New insn.
	(ctzsi2): New expand.
	* config/arm/arm.h (CTZ_DEFINED_VALUE_AT_ZERO): New macro.

	testsuite/
	* gcc.target/arm/ctz.c: New test case.

From-SVN: r151402