Hi,
Similar to aarch64, this patch replaces call to builtin by
dereferencing __a in vld1_p64, vld1_s64 and vld1_u64.

The patch changes code-gen for the intrinsic as follows:
Before patch:
        vld1.64 {d16}, [r0:64]
        vmov    r0, r1, d16     @ int
        bx      lr

After patch:
        ldrd    r0, [r0]
        bx      lr

I assume the code-gen after patch is correct, since it loads two
consecutive words from [r0] into r0 and r1 ?

Bootstrapped+tested on arm-linux-gnueabihf.
OK to commit ?

Thanks,
Prathamesh