arm.md (arm_rev): Factorize thumb1, thumb2 and arm variants for rev instruction..

arm.md (arm_rev): Factorize thumb1, thumb2 and arm variants for rev instruction..

2012-09-13  Christophe Lyon  <christophe.lyon@linaro.org>
	    Richard Earnshaw  <rearnsha@arm.com>

	gcc/
	* config/arm/arm.md (arm_rev): Factorize thumb1, thumb2 and arm
	variants for rev instruction..
	(thumb1_rev): Delete pattern.
	(arm_revsh): New pattern to support builtin_bswap16.
	(arm_rev16, bswaphi2): Likewise.

	gcc/testsuite/
	* gcc.target/arm/builtin-bswap-1.c: New testcase.

Co-Authored-By: Richard Earnshaw <rearnsha@arm.com>
From-SVN: r191243