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// Copyright 2013 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 obj
// Garbage collector liveness bitmap generation.
// The command line flag -live causes this code to print debug information.
// The levels are:
//
// -live (aka -live=1): print liveness lists as code warnings at safe points
// -live=2: print an assembly listing with liveness annotations
// -live=3: print information during each computation phase (much chattier)
//
// Each level includes the earlier output as well.
// Copyright 2012 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.
// Used by cmd/gc.
const (
GcBits = 4
BitsPerPointer = 2
BitsDead = 0
BitsScalar = 1
BitsPointer = 2
BitsMask = 3
PointersPerByte = 8 / BitsPerPointer
InsData = 1 + iota - 7
InsArray
InsArrayEnd
InsEnd
MaxGCMask = 65536
)