Recently introduced auto-generated crypto code with lots of math/bits calls is causing TestStmtLines to fail. See https://go-review.googlesource.com/c/go/+/360014/comments/fe81af4a_47619249. For now I [skipped the package in the test](https://cs.opensource.google/go/go/+/master:src/cmd/compile/internal/ssa/stmtlines_test.go;l=106-108;drc=4a3cef2036097d323b6cc0bbe90fc4d8c7588660) to unblock the change, since the problem doesn't seem to be the crypto code. /cc @dr2chase @josharian