pgo: Enable pgo behind release flag (#13158)

* Revert a54e61ecb0

* Configure the use of pgo profiles behind the release config flag (--config=release)

.bazelrc

@@ -27,6 +27,7 @@ build:minimal --@io_bazel_rules_go//go/config:tags=minimal
 # Release flags
 build:release --compilation_mode=opt
 build:release --stamp
+build:release --define pgo_enabled=1
 
 # Build binary with cgo symbolizer for debugging / profiling.
 build:cgo_symbolizer --copt=-g

BUILD.bazel

@@ -144,6 +144,11 @@ config_setting(
     values = {"define": "coverage_enabled=1"},
 )
 
+config_setting(
+    name = "pgo_enabled",
+    values = {"define": "pgo_enabled=1"},
+)
+
 common_files = {
     "//:LICENSE.md": "LICENSE.md",
     "//:README.md": "README.md",

cmd/beacon-chain/BUILD.bazel

@@ -110,6 +110,10 @@ docker_push(
 go_binary(
     name = "beacon-chain",
     embed = [":go_default_library"],
+    pgoprofile = select({
+        "//:pgo_enabled": "pprof.beacon-chain.samples.cpu.pb.gz",
+        "//conditions:default": None,
+    }),
     visibility = [
         "//beacon-chain:__subpackages__",
         "//testing/endtoend:__pkg__",