cmd/compile/internal/ssa: use built-in min function
Change-Id: Id4276adea58afdf98c6f9b547cca0546fc659ae1
GitHub-Last-Rev:
4c836241c86d51c69330153dea1c5679958c37f9
GitHub-Pull-Request: golang/go#73323
Reviewed-on: https://go-review.googlesource.com/c/go/+/664695
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>