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cmd/compile: change gc logging to report inline failure instead of success

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I've been experimenting with this, success is the wrong thing to report
even though it seems to log much less.

Change-Id: I7c25a45d2f41e82b6c8dd8b0a56ba848c63fb21a
Reviewed-on: https://go-review.googlesource.com/c/go/+/223298
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
David Chase 2020-03-04 16:33:54 -05:00
parent 83e288f3db
commit fced302aa1
2 changed files with 29 additions and 8 deletions
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20
src/cmd/compile/internal/gc/inl.go
View file

@ -687,6 +687,10 @@ func inlnode(n *Node, maxCost int32, inlMap map[*Node]bool) *Node {
if Debug['m'] > 1 {
fmt.Printf("%v: cannot inline escaping closure variable %v\n", n.Line(), n.Left)
}
if logopt.Enabled() {
logopt.LogOpt(n.Pos, "cannotInlineCall", "inline", Curfn.funcname(),
fmt.Sprintf("%v cannot be inlined (escaping closure variable)", n.Left))
}
break
}
@ -695,8 +699,16 @@ func inlnode(n *Node, maxCost int32, inlMap map[*Node]bool) *Node {
if Debug['m'] > 1 {
if a != nil {
fmt.Printf("%v: cannot inline re-assigned closure variable at %v: %v\n", n.Line(), a.Line(), a)
if logopt.Enabled() {
logopt.LogOpt(n.Pos, "cannotInlineCall", "inline", Curfn.funcname(),
fmt.Sprintf("%v cannot be inlined (re-assigned closure variable)", a))
}
} else {
fmt.Printf("%v: cannot inline global closure variable %v\n", n.Line(), n.Left)
if logopt.Enabled() {
logopt.LogOpt(n.Pos, "cannotInlineCall", "inline", Curfn.funcname(),
fmt.Sprintf("%v cannot be inlined (global closure variable)", n.Left))
}
}
}
break
@ -842,7 +854,10 @@ var inlgen int
// n.Left = mkinlcall(n.Left, fn, isddd)
func mkinlcall(n, fn *Node, maxCost int32, inlMap map[*Node]bool) *Node {
if fn.Func.Inl == nil {
// No inlinable body.
if logopt.Enabled() {
logopt.LogOpt(n.Pos, "cannotInlineCall", "inline", Curfn.funcname(),
fmt.Sprintf("%s cannot be inlined", fn.pkgFuncName()))
}
return n
}
if fn.Func.Inl.Cost > maxCost {
@ -896,9 +911,6 @@ func mkinlcall(n, fn *Node, maxCost int32, inlMap map[*Node]bool) *Node {
if Debug['m'] > 2 {
fmt.Printf("%v: Before inlining: %+v\n", n.Line(), n)
}
if logopt.Enabled() {
logopt.LogOpt(n.Pos, "inlineCall", "inline", Curfn.funcname(), fn.pkgFuncName())
}
if ssaDump != "" && ssaDump == Curfn.funcname() {
ssaDumpInlined = append(ssaDumpInlined, fn)