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cde34780b7
Only RotateLeft{64,32} were tested, and just for ppc64. This CL adds
tests for RotateLeft{64,32,16,8} on arm64 and amd64/386, for the cases
where the calls are actually instrinsified.
RotateLeft tests (the last ones for math/bits functions) are deleted
from asm_test.
This CL also adds a space between the "//" and the arch name in the
comments, to uniform this file to the style used in all the other
files.
Change-Id: Ifc2a27261d70bcc294b4ec64490d8367f62d2b89
Reviewed-on: https://go-review.googlesource.com/99596
Reviewed-by: Giovanni Bajo <rasky@develer.com>
218 lines
4.1 KiB
Go
218 lines
4.1 KiB
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/bits"
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// ----------------------- //
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// bits.LeadingZeros //
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// ----------------------- //
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func LeadingZeros(n uint) int {
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// amd64:"BSRQ"
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// s390x:"FLOGR"
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// arm:"CLZ" arm64:"CLZ"
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// mips:"CLZ"
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return bits.LeadingZeros(n)
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}
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func LeadingZeros64(n uint64) int {
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// amd64:"BSRQ"
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// s390x:"FLOGR"
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// arm:"CLZ" arm64:"CLZ"
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// mips:"CLZ"
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return bits.LeadingZeros64(n)
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}
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func LeadingZeros32(n uint32) int {
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// amd64:"BSRQ"
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// s390x:"FLOGR"
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// arm:"CLZ" arm64:"CLZ"
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// mips:"CLZ"
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return bits.LeadingZeros32(n)
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}
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func LeadingZeros16(n uint16) int {
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// amd64:"BSRQ"
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// s390x:"FLOGR"
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// arm:"CLZ" arm64:"CLZ"
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// mips:"CLZ"
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return bits.LeadingZeros16(n)
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}
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func LeadingZeros8(n uint8) int {
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// amd64 LeadingZeros8 not intrinsified (see ssa.go)
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// s390x:"FLOGR"
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// arm:"CLZ" arm64:"CLZ"
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// mips:"CLZ"
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return bits.LeadingZeros8(n)
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}
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// --------------- //
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// bits.Len* //
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// --------------- //
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func Len(n uint) int {
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// amd64:"BSRQ"
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// s390x:"FLOGR"
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// arm:"CLZ" arm64:"CLZ"
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// mips:"CLZ"
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return bits.Len(n)
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}
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func Len64(n uint64) int {
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// amd64:"BSRQ"
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// s390x:"FLOGR"
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// arm:"CLZ" arm64:"CLZ"
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// mips:"CLZ"
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return bits.Len64(n)
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}
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func Len32(n uint32) int {
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// amd64:"BSRQ"
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// s390x:"FLOGR"
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// arm:"CLZ" arm64:"CLZ"
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// mips:"CLZ"
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return bits.Len32(n)
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}
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func Len16(n uint16) int {
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// amd64:"BSRQ"
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// s390x:"FLOGR"
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// arm:"CLZ" arm64:"CLZ"
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// mips:"CLZ"
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return bits.Len16(n)
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}
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func Len8(n uint8) int {
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// amd64 Len8 not intrisified (see ssa.go)
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// s390x:"FLOGR"
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// arm:"CLZ" arm64:"CLZ"
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// mips:"CLZ"
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return bits.Len8(n)
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}
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// -------------------- //
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// bits.OnesCount //
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// -------------------- //
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func OnesCount(n uint) int {
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// amd64:"POPCNTQ",".*support_popcnt"
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// arm64:"VCNT","VUADDLV"
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return bits.OnesCount(n)
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}
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func OnesCount64(n uint64) int {
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// amd64:"POPCNTQ",".*support_popcnt"
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// arm64:"VCNT","VUADDLV"
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return bits.OnesCount64(n)
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}
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func OnesCount32(n uint32) int {
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// amd64:"POPCNTL",".*support_popcnt"
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// arm64:"VCNT","VUADDLV"
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return bits.OnesCount32(n)
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}
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func OnesCount16(n uint16) int {
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// amd64:"POPCNTL",".*support_popcnt"
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// arm64:"VCNT","VUADDLV"
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return bits.OnesCount16(n)
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}
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// ----------------------- //
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// bits.ReverseBytes //
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// ----------------------- //
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func ReverseBytes(n uint) uint {
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// amd64:"BSWAPQ"
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// s390x:"MOVDBR"
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// arm64:"REV"
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return bits.ReverseBytes(n)
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}
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func ReverseBytes64(n uint64) uint64 {
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// amd64:"BSWAPQ"
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// s390x:"MOVDBR"
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// arm64:"REV"
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return bits.ReverseBytes64(n)
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}
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func ReverseBytes32(n uint32) uint32 {
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// amd64:"BSWAPL"
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// s390x:"MOVWBR"
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// arm64:"REVW"
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return bits.ReverseBytes32(n)
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}
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func ReverseBytes16(n uint16) uint16 {
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// amd64:"ROLW"
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return bits.ReverseBytes16(n)
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}
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// --------------------- //
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// bits.RotateLeft //
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// --------------------- //
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func RotateLeft64(n uint64) uint64 {
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// amd64:"ROLQ"
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// arm64:"ROR"
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// ppc64:"ROTL"
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return bits.RotateLeft64(n, 37)
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}
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func RotateLeft32(n uint32) uint32 {
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// amd64:"ROLL" 386:"ROLL"
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// arm64:"RORW"
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// ppc64:"ROTLW"
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return bits.RotateLeft32(n, 9)
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}
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func RotateLeft16(n uint16) uint16 {
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// amd64:"ROLW" 386:"ROLW"
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return bits.RotateLeft16(n, 5)
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}
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func RotateLeft8(n uint8) uint8 {
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// amd64:"ROLB" 386:"ROLB"
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return bits.RotateLeft8(n, 5)
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}
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// ------------------------ //
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// bits.TrailingZeros //
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// ------------------------ //
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func TrailingZeros(n uint) int {
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// amd64:"BSFQ","MOVL\t\\$64","CMOVQEQ"
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// s390x:"FLOGR"
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return bits.TrailingZeros(n)
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}
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func TrailingZeros64(n uint64) int {
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// amd64:"BSFQ","MOVL\t\\$64","CMOVQEQ"
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// s390x:"FLOGR"
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return bits.TrailingZeros64(n)
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}
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func TrailingZeros32(n uint32) int {
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// amd64:"MOVQ\t\\$4294967296","ORQ\t[^$]","BSFQ"
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// s390x:"FLOGR","MOVWZ"
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return bits.TrailingZeros32(n)
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}
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func TrailingZeros16(n uint16) int {
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// amd64:"BSFQ","ORQ\t\\$65536"
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// s390x:"FLOGR","OR\t\\$65536"
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return bits.TrailingZeros16(n)
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}
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func TrailingZeros8(n uint8) int {
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// amd64:"BSFQ","ORQ\t\\$256"
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// s390x:"FLOGR","OR\t\\$256"
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return bits.TrailingZeros8(n)
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}
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