mirror of
https://github.com/golang/go
synced 2024-11-17 12:44:49 -07:00
e4172e5f5e
Initialization of t.UInt is missing from SetTypPtrs in config.go, preventing rules that use it from matching when they should. This adds the initialization to allow those rules to work. Updated test/codegen/rotate.go to test for this case, which appears in math/bits RotateLeft32 and RotateLeft64. There had been a testcase for this in go 1.10 but that went away when asm_test.go was removed. Change-Id: I82fc825ad8364df6fc36a69a1e448214d2e24ed5 Reviewed-on: https://go-review.googlesource.com/112518 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
161 lines
2.3 KiB
Go
161 lines
2.3 KiB
Go
// asmcheck
|
|
|
|
// Copyright 2018 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 codegen
|
|
|
|
// ------------------- //
|
|
// const rotates //
|
|
// ------------------- //
|
|
|
|
func rot64(x uint64) uint64 {
|
|
var a uint64
|
|
|
|
// amd64:"ROLQ\t[$]7"
|
|
// arm64:"ROR\t[$]57"
|
|
// s390x:"RLLG\t[$]7"
|
|
// ppc64le:"ROTL\t[$]7"
|
|
a += x<<7 | x>>57
|
|
|
|
// amd64:"ROLQ\t[$]8"
|
|
// arm64:"ROR\t[$]56"
|
|
// s390x:"RLLG\t[$]8"
|
|
// ppc64le:"ROTL\t[$]8"
|
|
a += x<<8 + x>>56
|
|
|
|
// amd64:"ROLQ\t[$]9"
|
|
// arm64:"ROR\t[$]55"
|
|
// s390x:"RLLG\t[$]9"
|
|
// ppc64le:"ROTL\t[$]9"
|
|
a += x<<9 ^ x>>55
|
|
|
|
return a
|
|
}
|
|
|
|
func rot32(x uint32) uint32 {
|
|
var a uint32
|
|
|
|
// amd64:"ROLL\t[$]7"
|
|
// arm:"MOVW\tR\\d+@>25"
|
|
// arm64:"RORW\t[$]25"
|
|
// s390x:"RLL\t[$]7"
|
|
// ppc64le:"ROTLW\t[$]7"
|
|
a += x<<7 | x>>25
|
|
|
|
// amd64:`ROLL\t[$]8`
|
|
// arm:"MOVW\tR\\d+@>24"
|
|
// arm64:"RORW\t[$]24"
|
|
// s390x:"RLL\t[$]8"
|
|
// ppc64le:"ROTLW\t[$]8"
|
|
a += x<<8 + x>>24
|
|
|
|
// amd64:"ROLL\t[$]9"
|
|
// arm:"MOVW\tR\\d+@>23"
|
|
// arm64:"RORW\t[$]23"
|
|
// s390x:"RLL\t[$]9"
|
|
// ppc64le:"ROTLW\t[$]9"
|
|
a += x<<9 ^ x>>23
|
|
|
|
return a
|
|
}
|
|
|
|
func rot16(x uint16) uint16 {
|
|
var a uint16
|
|
|
|
// amd64:"ROLW\t[$]7"
|
|
a += x<<7 | x>>9
|
|
|
|
// amd64:`ROLW\t[$]8`
|
|
a += x<<8 + x>>8
|
|
|
|
// amd64:"ROLW\t[$]9"
|
|
a += x<<9 ^ x>>7
|
|
|
|
return a
|
|
}
|
|
|
|
func rot8(x uint8) uint8 {
|
|
var a uint8
|
|
|
|
// amd64:"ROLB\t[$]5"
|
|
a += x<<5 | x>>3
|
|
|
|
// amd64:`ROLB\t[$]6`
|
|
a += x<<6 + x>>2
|
|
|
|
// amd64:"ROLB\t[$]7"
|
|
a += x<<7 ^ x>>1
|
|
|
|
return a
|
|
}
|
|
|
|
// ----------------------- //
|
|
// non-const rotates //
|
|
// ----------------------- //
|
|
|
|
func rot64nc(x uint64, z uint) uint64 {
|
|
var a uint64
|
|
|
|
z &= 63
|
|
|
|
// amd64:"ROLQ"
|
|
// ppc64le:"ROTL"
|
|
a += x<<z | x>>(64-z)
|
|
|
|
// amd64:"RORQ"
|
|
a += x>>z | x<<(64-z)
|
|
|
|
return a
|
|
}
|
|
|
|
func rot32nc(x uint32, z uint) uint32 {
|
|
var a uint32
|
|
|
|
z &= 31
|
|
|
|
// amd64:"ROLL"
|
|
// ppc64le:"ROTLW"
|
|
a += x<<z | x>>(32-z)
|
|
|
|
// amd64:"RORL"
|
|
a += x>>z | x<<(32-z)
|
|
|
|
return a
|
|
}
|
|
|
|
func rot16nc(x uint16, z uint) uint16 {
|
|
var a uint16
|
|
|
|
z &= 15
|
|
|
|
// amd64:"ROLW"
|
|
a += x<<z | x>>(16-z)
|
|
|
|
// amd64:"RORW"
|
|
a += x>>z | x<<(16-z)
|
|
|
|
return a
|
|
}
|
|
|
|
func rot8nc(x uint8, z uint) uint8 {
|
|
var a uint8
|
|
|
|
z &= 7
|
|
|
|
// amd64:"ROLB"
|
|
a += x<<z | x>>(8-z)
|
|
|
|
// amd64:"RORB"
|
|
a += x>>z | x<<(8-z)
|
|
|
|
return a
|
|
}
|
|
|
|
// Issue 18254: rotate after inlining
|
|
func f32(x uint32) uint32 {
|
|
// amd64:"ROLL\t[$]7"
|
|
return rot32nc(x, 7)
|
|
}
|