| # Copyright 2023 The Go Authors. All rights reserved. | |
| # Use of this source code is governed by a BSD-style | |
| # license that can be found in the LICENSE file. | |
| # This script collects a CPU profile of the compiler | |
| # for building all targets in std and cmd, and puts | |
| # the profile at cmd/compile/default.pgo. | |
| dir=$(mktemp -d) | |
| cd $dir | |
| seed=$(date) | |
| for p in $(go list std cmd); do | |
| h=$(echo $seed $p | md5sum | cut -d ' ' -f 1) | |
| echo $p $h | |
| go build -o /dev/null -gcflags=-cpuprofile=$PWD/prof.$h $p | |
| done | |
| go tool pprof -proto prof.* > $(go env GOROOT)/src/cmd/compile/default.pgo | |
| rm -r $dir | |