2013-11-14  Julian Brown  <julian@codesourcery.com>
        Joey Ye  <joey.ye@arm.com>

        * config/arm/arm.c (arm_cortex_m_branch_cost): New.
        (arm_v7m_tune): New.
        (arm_slowmul_tune, arm_fastmul_tune,
        arm_strongarm_tune, arm_9e_tune, arm_v6t2_tune,
        arm_cortex_tune, arm_cortex_a15_tune,
        arm_cortex_a5_tune, arm_v6m_tune): Add comments
        for Sched adj cost.
        * config/arm/arm-cores.def (cortex-m4, cortex-m3):
        Use arm_v7m_tune.

testsuite:
2013-11-14  Joey Ye  <joey.ye@arm.com>

        * gcc.dg/tree-ssa/forwprop-28.c: Disable for cortex_m.
        * gcc.dg/tree-ssa/vrp47.c: Likewise.
        * gcc.dg/tree-ssa/vrp87.c: Likewise.
        * gcc.dg/tree-ssa/ssa-dom-thread-4.c: Ingore for cortex_m.
        * gcc.dg/tree-ssa/ssa-vrp-thread-1.c: Likewise.

From-SVN: r204778