arm.h (TARGET_USE_MOVT): Check MOVT/MOVW availability with TARGET_HAVE_MOVT.

arm.h (TARGET_USE_MOVT): Check MOVT/MOVW availability with TARGET_HAVE_MOVT.

2016-07-07  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm.h (TARGET_USE_MOVT): Check MOVT/MOVW availability
    with TARGET_HAVE_MOVT.
    (TARGET_HAVE_MOVT): Define.
    * config/arm/arm.c (const_ok_for_op): Check MOVT/MOVW
    availability with TARGET_HAVE_MOVT.
    * config/arm/arm.md (arm_movt): Use TARGET_HAVE_MOVT to check MOVT
    availability.
    (addsi splitter): Use TARGET_THUMB && TARGET_HAVE_MOVT rather than
    TARGET_THUMB2.
    (symbol_refs movsi splitter): Remove TARGET_32BIT check.
    (arm_movtas_ze): Use TARGET_HAVE_MOVT to check MOVT availability.
    * config/arm/constraints.md (define_constraint "j"): Use
    TARGET_HAVE_MOVT to check MOVT availability.

From-SVN: r238083