cmd/compile: better name for BloopWalk

Use bloop.Walk instead of BloopWalk for better naming.

Change-Id: I60fb7abf8cdab2c7641c69d1cc06c1d6bef1600b
Reviewed-on: https://go-review.googlesource.com/c/go/+/728960
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Keith Randall <khr@golang.org>

src/cmd/compile/internal/bloop/bloop.go

@@ -325,7 +325,7 @@ func (e editor) edit(n ir.Node) ir.Node {
 	return n
 }
 
-// BloopWalk performs a walk on all functions in the package
+// Walk performs a walk on all functions in the package
 // if it imports testing and wrap the results of all qualified
 // statements in a runtime.KeepAlive intrinsic call. See package
 // doc for more details.
@@ -333,7 +333,7 @@ func (e editor) edit(n ir.Node) ir.Node {
 //	for b.Loop() {...}
 //
 // loop's body.
-func BloopWalk(pkg *ir.Package) {
+func Walk(pkg *ir.Package) {
 	hasTesting := false
 	for _, i := range pkg.Imports {
 		if i.Path == "testing" {

src/cmd/compile/internal/gc/main.go

@@ -244,7 +244,7 @@ func Main(archInit func(*ssagen.ArchInfo)) {
 	}
 
 	// Apply bloop markings.
-	bloop.BloopWalk(typecheck.Target)
+	bloop.Walk(typecheck.Target)
 
 	// Interleaved devirtualization and inlining.
 	base.Timer.Start("fe", "devirtualize-and-inline")