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cmd/compile: layout stack frame during SSA

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Identify live stack variables during SSA and compute the stack frame
layout earlier so that we can emit instructions with the correct
offsets upfront.

Passes toolstash/buildall.

Change-Id: I191100dba274f1e364a15bdcfdc1d1466cdd1db5
Reviewed-on: https://go-review.googlesource.com/30216
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Matthew Dempsky 2016-10-03 12:26:25 -07:00
parent f239196b9e
commit 8c24bff52b
17 changed files with 160 additions and 319 deletions
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10
src/cmd/compile/internal/ssa/stackframe.go Normal file
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssa
// stackframe calls back into the frontend to assign frame offsets.
func stackframe(f *Func) {
f.Config.fe.AllocFrame(f)
}