Fix bswap patterns for trunk.

Fix bswap patterns for trunk.

Committed by Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

2010-01-28 Stephen Thomas <stephen.thomas@arm.com>

        * config/arm/arm.md (bswapsi2): Add support for bswapsi2.
        (arm_rev): New.
        (arm_legacy_rev): Likewise.
        (thumb_legacy_rev): Likewise.

2010-01-28 Stephen Thomas <stephen.thomas@arm.com>

        * testsuite/gcc.dg/optimize-bswap*.c: Add ARM target

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@156313 138bc75d-0d04-0410-961f-82ee72b054a4