Hi,

We have decided to apply the following patch to the embedded-7-branch to enable 
ARMv8-R support.

ChangeLog entry is as follows:

*** gcc/ChangeLog.arm ***

2017-09-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>

      Backport from mainline
      2017-07-06  Thomas Preud'homme  <thomas.preudhomme@arm.com>

     * config/arm/arm-cpus.in (armv8-r): Add new entry.
     * config/arm/arm-isa.h (ISA_ARMv8r): Define macro.
     * config/arm/arm-tables.opt: Regenerate.
     * config/arm/arm.h (enum base_architecture): Add BASE_ARCH_8R
     enumerator.
     * doc/invoke.texi: Mention -march=armv8-r and its extensions.

*** gcc/testsuite/ChangeLog ***


2017-09-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>

      Backport from mainline
      2017-07-06  Thomas Preud'homme  <thomas.preudhomme@arm.com>

     * lib/target-supports.exp: Generate
     check_effective_target_arm_arch_v8r_ok, add_options_for_arm_arch_v8r
     and check_effective_target_arm_arch_v8r_multilib.

*** libgcc/ChangeLog ***


2017-09-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>

      Backport from mainline
      2017-07-06  Thomas Preud'homme  <thomas.preudhomme@arm.com>

     * config/arm/lib1funcs.S: Defined __ARM_ARCH__ to 8 for ARMv8-R.