Fix PR80082: LDRD erronously used for 64bit load on ARMv7-R

Fix PR80082: LDRD erronously used for 64bit load on ARMv7-R

2017-04-11  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    Backport from GCC 6
    2017-04-06  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    PR target/80082
    * config/arm/arm-protos.h (FL_LPAE): Define macro.
    (FL_FOR_ARCH7VE): Add FL_LPAE.
    (arm_arch_lpae): Declare extern.
    * config/arm/arm.c (arm_arch_lpae): Declare.
    (arm_option_override): Define arm_arch_lpae.
    * config/arm/arm.h (TARGET_HAVE_LPAE): Redefine in term of
    arm_arch_lpae.

    gcc/testsuite/
    PR target/80082
    * gcc.target/arm/atomic_loaddi_10.c: New testcase.
    * gcc.target/arm/atomic_loaddi_11.c: Likewise.

From-SVN: r246844