Merge "Enable armv8-2a supporting on 2nd arch. variant"

KNOWN_ARMv8_CORES := cortex-a53 cortex-a53.a57 cortex-a55 cortex-a73 cortex-a75 cortex-a76

KNOWN_ARMv8_CORES += kryo denver64 exynos-m1 exynos-m2

KNOWN_ARMv82a_CORES := cortex-a55 cortex-a75

# Check for cores that implement armv8-2a ISAs.

ifneq (,$(filter $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT), $(KNOWN_ARMv82a_CORES)))

  ifneq ($(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT),armv8-2a)

    $(warning $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT) is armv8-2a.)

    ifneq (,$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))

      $(warning TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT, $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT), ignored! Use armv8-2a instead.)

    endif

    # Overwrite TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT

    TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT := armv8-2a

  endif

# Many devices (incorrectly) use armv7-a-neon as the 2nd architecture variant

# for cores that implement armv8-a ISAs. The following sets it to armv8-a.

ifneq (,$(filter $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT), $(KNOWN_ARMv8_CORES)))

else ifneq (,$(filter $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT), $(KNOWN_ARMv8_CORES)))

  ifneq ($(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT),armv8-a)

    $(warning $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT) is armv8-a.)

    ifneq (,$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))