go opt 源码
golang opt 代码
文件路径：/src/cmd/compile/internal/ppc64/opt.go
// Copyright 2014 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 ppc64
// Many Power ISA arithmetic and logical instructions come in four
// standard variants. These bits let us map between variants.
const (
V_CC = 1 << 0 // xCC (affect CR field 0 flags)
V_V = 1 << 1 // xV (affect SO and OV flags)
)
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