bpf_get_reg64_ref
const s8 *rd = bpf_get_reg64_ref(dst, tmp1, ctx->prog->aux->verifier_zext, ctx);
const s8 *rd = bpf_get_reg64_ref(dst, tmp1, false, ctx);
reg = bpf_get_reg64_ref(dst, tmp, false, ctx);
reg = bpf_get_reg64_ref(dst, tmp, false, ctx);
reg = bpf_get_reg64_ref(dst, tmp, false, ctx);
reg = bpf_get_reg64_ref(dst, tmp, false, ctx);
reg = bpf_get_reg64_ref(dst, tmp, false, ctx);
reg = bpf_get_reg64_ref(dst, tmp, false, ctx);
rd = bpf_get_reg64_ref(dst, tmp1, false, ctx);
rd = bpf_get_reg64_ref(dst, tmp1, false, ctx);