This CL implement archFloat32FromReg and archFloat32ToReg
need for riscv64 due to differences in the way float32 are
represented in registers as compared to other platforms.
Change-Id: I5eab27df242f84b387b0c8dc7f347c93b3fd9df0
Reviewed-on: https://go-review.googlesource.com/c/go/+/403134
Run-TryBot: mzh <mzh@golangcn.org> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>