tree feb6a27e1e3e0ce5cbf2f9dd392258e71059ea34
parent 5c3f52ffbae7a9bb59bce63cd2cffdd8af8f4a92
author Ian Lance Taylor <iant@golang.org> 1568005073 -0700
committer Ian Lance Taylor <iant@golang.org> 1568083662 +0000

cmd/go: look for tool build ID before hashing entire file

Also fix the key used to store the ID.

This is a significant speedup in cmd/go run time.

Change-Id: Ie4c2f945872204fe24118d2adb2163f498d4394e
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/194257
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>