2016-07-13  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm.h (TARGET_HAVE_CBZ): Define.
    (TARGET_IDIV): Set for all Thumb targets provided they have hardware
    divide feature.
    * config/arm/arm.md (divsi3): New unpredicable alternative for ARMv8-M
    Baseline.  Make initial alternative TARGET_32BIT only.
    (udivsi3): Likewise.
    * config/arm/thumb1.md (thumb1_cbz): New define_insn.
    * doc/sourcebuild.texi (arm_thumb1_cbz_ok): Document new effective
    target.

    gcc/testsuite/
    * lib/target-supports.exp (check_effective_target_arm_thumb1_cbz_ok):
    Add new arm_thumb1_cbz_ok effective target.
    * gcc.target/arm/cbz.c: New test.

From-SVN: r238289