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[dev.unified] cmd/compile: allow inlining to fail gracefully

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Change-Id: I20c7df52d110fb88eb22d57bdad9264d0c5e22fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/419674
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This commit is contained in:
Matthew Dempsky 2022-07-25 21:37:30 -07:00
parent 831fdf1dff
commit f2851c67fd
2 changed files with 9 additions and 5 deletions
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7
src/cmd/compile/internal/inline/inl.go
View file

@ -685,9 +685,8 @@ var inlgen int
var SSADumpInline = func(*ir.Func) {}
// NewInline allows the inliner implementation to be overridden.
// If it returns nil, the legacy inliner will handle this call
// instead.
var NewInline = func(call *ir.CallExpr, fn *ir.Func, inlIndex int) *ir.InlinedCallExpr { return nil }
// If it returns nil, the function will not be inlined.
var NewInline = oldInline
// If n is a OCALLFUNC node, and fn is an ONAME node for a
// function with an inlinable body, return an OINLCALL node that can replace n.
@ -807,7 +806,7 @@ func mkinlcall(n *ir.CallExpr, fn *ir.Func, maxCost int32, inlMap map[*ir.Func]b
res := NewInline(n, fn, inlIndex)
if res == nil {
res = oldInline(n, fn, inlIndex)
return n
}
// transitive inlining

7
src/cmd/compile/internal/noder/reader.go
View file

@ -2227,7 +2227,12 @@ func InlineCall(call *ir.CallExpr, fn *ir.Func, inlIndex int) *ir.InlinedCallExp
pri, ok := bodyReader[fn]
if !ok {
base.FatalfAt(call.Pos(), "missing function body for call to %v", fn)
// TODO(mdempsky): Reconsider this diagnostic's wording, if it's
// to be included in Go 1.20.
if base.Flag.LowerM != 0 {
base.WarnfAt(call.Pos(), "cannot inline call to %v: missing inline body", fn)
}
return nil
}
if fn.Inl.Body == nil {