From: Cherry Mui <cherryyz@google.com>
Date: Tue, 16 May 2023 20:53:53 +0000 (+0000)
Subject: Revert "cmd/compile: build compiler with PGO"
X-Git-Tag: go1.21rc1~505
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=298ff30958c32620b624da186cf32b362c0b0685;p=gostls13.git

Revert "cmd/compile: build compiler with PGO"

This reverts CL 451292.

Reason for revert: causes the racecompile builder failure.
https://build.golang.org/log/32d2fc21bd6e3bd415495d04befe806c0f10ea8b

Change-Id: I5863437d4b814712b1280a1c21ba86009c332645
Reviewed-on: https://go-review.googlesource.com/c/go/+/495475
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
---

diff --git a/src/cmd/compile/default.pgo b/src/cmd/compile/default.pgo
deleted file mode 100644
index 2ba79688d4..0000000000
Binary files a/src/cmd/compile/default.pgo and /dev/null differ
diff --git a/src/cmd/compile/profile.sh b/src/cmd/compile/profile.sh
deleted file mode 100644
index 37d65d8494..0000000000
--- a/src/cmd/compile/profile.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-# 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
diff --git a/src/cmd/dist/buildtool.go b/src/cmd/dist/buildtool.go
index 7ecfb3a811..af3db5f590 100644
--- a/src/cmd/dist/buildtool.go
+++ b/src/cmd/dist/buildtool.go
@@ -100,10 +100,6 @@ var ignorePrefixes = []string{
 var ignoreSuffixes = []string{
 	"_test.s",
 	"_test.go",
-	// Skip PGO profile. No need to build toolchain1 compiler
-	// with PGO. And as it is not a text file the import path
-	// rewrite will break it.
-	".pgo",
 }
 
 var tryDirs = []string{