Make tracing compatible with sanitizers. (#6479)
Make tracing compatible with sanitizers. (#6479)

Splitting this off from working on https://github.com/google/iree/issues/6404.

Sanitizers define these functions, so tracing needs to not define them (or wrap them somehow).
iree-org/iree,iree-org/iree,google/iree,iree-org/iree,iree-org/iree,iree-org/iree,google/iree,google/iree,google/iree,google/iree,iree-org/iree,iree-org/iree,google/iree,google/iree