test/codegen: check zerobase for newobject on 0-sized types
This CL also adds riscv64 checks
Change-Id: I693e4e606f470615f6b49085592d6d5ca61473d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/703716 Reviewed-by: Pengcheng Wang <wangpengcheng.pp@bytedance.com>
Auto-Submit: Keith Randall <khr@google.com> Reviewed-by: Mark Freeman <markfreeman@google.com> Reviewed-by: Joel Sing <joel@sing.id.au>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com>