Hi Alexander,

As mentioned in [1], Arm Cortex-R52 can have either single precision or double precision + Neon. This is reflected in GCC 8 by -mcpu=cortex-r52 defaulting to the latter (double precision + Neon) and -mcpu=cortex-r52+nofp.dp giving you the former (single precision).

[1] https://developer.arm.com/products/processors/cortex-r/cortex-r52

Best regards,

Thomas

On 25/01/18 21:22, Alexander Fedotov wrote:
Hi,
As I understand from this
https://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html current master
branch doesn't have support of double-precision FPv5 floating-point
instructions for ARMv8-R (Cortex-r52).
If yes, are there any chances to see them in GCC 8 ?

Alex

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