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30 lines
545 B
Go
30 lines
545 B
Go
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package ssa
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// copyelim removes all copies from f.
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func copyelim(f *Func) {
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for _, b := range f.Blocks {
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for _, v := range b.Values {
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for i, w := range v.Args {
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x := w
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for x.Op == OpCopy {
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x = x.Args[0]
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}
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if x != w {
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v.Args[i] = x
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}
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}
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}
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v := b.Control
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if v != nil {
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for v.Op == OpCopy {
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v = v.Args[0]
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}
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b.Control = v
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}
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}
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}
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