Stowage/go
2
0
Fork 0
mirror of https://github.com/golang/go.git synced 2025-12-08 06:10:04 +00:00
Code Issues Projects Releases Packages Wiki Activity

cmd/compile: fix build

Browse source 
Run live vars test only on ssa builds.
We can't just drop KeepAlive ops during regalloc.  We need
to replace them with copies.

Change-Id: Ib4b3b1381415db88fdc2165fc0a9541b73ad9759
Reviewed-on: https://go-review.googlesource.com/23225
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Keith Randall 2016-05-18 13:28:48 -07:00
parent 6ab45c09f6
commit 075880a8e8
2 changed files with 4 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

5
src/cmd/compile/internal/ssa/regalloc.go
View file

@ -948,13 +948,14 @@ func (s *regAllocState) regalloc(f *Func) {
if vi.spillUsed { if vi.spillUsed {
// Use the spill location. // Use the spill location.
v.SetArg(0, vi.spill) v.SetArg(0, vi.spill)
b.Values = append(b.Values, v)
} else { } else {
// No need to keep unspilled values live. // No need to keep unspilled values live.
// These are typically rematerializeable constants like nil, // These are typically rematerializeable constants like nil,
// or values of a variable that were modified since the last call. // or values of a variable that were modified since the last call.
v.Args[0].Uses-- v.Op = OpCopy
v.SetArgs1(v.Args[1])
} }
b.Values = append(b.Values, v)
continue continue
} }
regspec := opcodeTable[v.Op].reg regspec := opcodeTable[v.Op].reg

1
test/fixedbugs/issue15277.go
View file

@ -3,6 +3,7 @@
// Copyright 2016 The Go Authors. All rights reserved. // Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style // Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file. // license that can be found in the LICENSE file.
// +build amd64
package main package main