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Change-Id: I9fe6572d1043ef9ee09c0925059ded554ad24c6b Reviewed-on: https://go-review.googlesource.com/98215 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
32 lines
779 B
Go
32 lines
779 B
Go
// asmcheck
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// Copyright 2018 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 codegen
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import "math"
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func rot32(x uint32) uint32 {
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var a uint32
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a += x<<7 | x>>25 // amd64:"ROLL.*[$]7" arm:"MOVW.*@>25"
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a += x<<8 + x>>24 // amd64:`ROLL.*\$8` arm:"MOVW.*@>24"
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a += x<<9 ^ x>>23 // amd64:"ROLL.*\\$9" arm:"MOVW.*@>23"
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return a
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}
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func rot64(x uint64) uint64 {
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var a uint64
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a += x<<7 | x>>57 // amd64:"ROL"
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a += x<<8 + x>>56 // amd64:"ROL"
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a += x<<9 ^ x>>55 // amd64:"ROL"
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return a
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}
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func copysign(a, b float64) float64 {
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// amd64:"SHLQ\t[$]1","SHRQ\t[$]1","SHRQ\t[$]63","SHLQ\t[$]63","ORQ"
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// ppc64le:"FCPSGN" s390x:"CPSDR",-"MOVD"
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return math.Copysign(a, b)
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}
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