mirror of
https://github.com/golang/go
synced 2024-11-26 10:18:12 -07:00
a37672bb7b
This helps simplify the noise when adding ppc codegen tests. ppc64x is used in other places to indicate something which runs on either endian. This helps cleanup existing codegen tests which are mostly identical between endian variants. condmove tests are converted as an example. Change-Id: I2b2d98a9a1859015f62db38d62d9d5d7593435b4 Reviewed-on: https://go-review.googlesource.com/c/go/+/462895 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Paul Murphy <murp@ibm.com>
454 lines
6.2 KiB
Go
454 lines
6.2 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
|
|
|
|
func cmovint(c int) int {
|
|
x := c + 4
|
|
if x < 0 {
|
|
x = 182
|
|
}
|
|
// amd64:"CMOVQLT"
|
|
// arm64:"CSEL\tLT"
|
|
// ppc64x:"ISEL\t[$]0"
|
|
// wasm:"Select"
|
|
return x
|
|
}
|
|
|
|
func cmovchan(x, y chan int) chan int {
|
|
if x != y {
|
|
x = y
|
|
}
|
|
// amd64:"CMOVQNE"
|
|
// arm64:"CSEL\tNE"
|
|
// ppc64x:"ISEL\t[$]2"
|
|
// wasm:"Select"
|
|
return x
|
|
}
|
|
|
|
func cmovuintptr(x, y uintptr) uintptr {
|
|
if x < y {
|
|
x = -y
|
|
}
|
|
// amd64:"CMOVQ(HI|CS)"
|
|
// arm64:"CSNEG\tLS"
|
|
// ppc64x:"ISEL\t[$]1"
|
|
// wasm:"Select"
|
|
return x
|
|
}
|
|
|
|
func cmov32bit(x, y uint32) uint32 {
|
|
if x < y {
|
|
x = -y
|
|
}
|
|
// amd64:"CMOVL(HI|CS)"
|
|
// arm64:"CSNEG\t(LS|HS)"
|
|
// ppc64x:"ISEL\t[$]1"
|
|
// wasm:"Select"
|
|
return x
|
|
}
|
|
|
|
func cmov16bit(x, y uint16) uint16 {
|
|
if x < y {
|
|
x = -y
|
|
}
|
|
// amd64:"CMOVW(HI|CS)"
|
|
// arm64:"CSNEG\t(LS|HS)"
|
|
// ppc64x:"ISEL\t[$]0"
|
|
// wasm:"Select"
|
|
return x
|
|
}
|
|
|
|
// Floating point comparison. For EQ/NE, we must
|
|
// generate special code to handle NaNs.
|
|
func cmovfloateq(x, y float64) int {
|
|
a := 128
|
|
if x == y {
|
|
a = 256
|
|
}
|
|
// amd64:"CMOVQNE","CMOVQPC"
|
|
// arm64:"CSEL\tEQ"
|
|
// ppc64x:"ISEL\t[$]2"
|
|
// wasm:"Select"
|
|
return a
|
|
}
|
|
|
|
func cmovfloatne(x, y float64) int {
|
|
a := 128
|
|
if x != y {
|
|
a = 256
|
|
}
|
|
// amd64:"CMOVQNE","CMOVQPS"
|
|
// arm64:"CSEL\tNE"
|
|
// ppc64x:"ISEL\t[$]2"
|
|
// wasm:"Select"
|
|
return a
|
|
}
|
|
|
|
//go:noinline
|
|
func frexp(f float64) (frac float64, exp int) {
|
|
return 1.0, 4
|
|
}
|
|
|
|
//go:noinline
|
|
func ldexp(frac float64, exp int) float64 {
|
|
return 1.0
|
|
}
|
|
|
|
// Generate a CMOV with a floating comparison and integer move.
|
|
func cmovfloatint2(x, y float64) float64 {
|
|
yfr, yexp := 4.0, 5
|
|
|
|
r := x
|
|
for r >= y {
|
|
rfr, rexp := frexp(r)
|
|
if rfr < yfr {
|
|
rexp = rexp - 1
|
|
}
|
|
// amd64:"CMOVQHI"
|
|
// arm64:"CSEL\tMI"
|
|
// ppc64x:"ISEL\t[$]0"
|
|
// wasm:"Select"
|
|
r = r - ldexp(y, rexp-yexp)
|
|
}
|
|
return r
|
|
}
|
|
|
|
func cmovloaded(x [4]int, y int) int {
|
|
if x[2] != 0 {
|
|
y = x[2]
|
|
} else {
|
|
y = y >> 2
|
|
}
|
|
// amd64:"CMOVQNE"
|
|
// arm64:"CSEL\tNE"
|
|
// ppc64x:"ISEL\t[$]2"
|
|
// wasm:"Select"
|
|
return y
|
|
}
|
|
|
|
func cmovuintptr2(x, y uintptr) uintptr {
|
|
a := x * 2
|
|
if a == 0 {
|
|
a = 256
|
|
}
|
|
// amd64:"CMOVQEQ"
|
|
// arm64:"CSEL\tEQ"
|
|
// ppc64x:"ISEL\t[$]2"
|
|
// wasm:"Select"
|
|
return a
|
|
}
|
|
|
|
// Floating point CMOVs are not supported by amd64/arm64/ppc64x
|
|
func cmovfloatmove(x, y int) float64 {
|
|
a := 1.0
|
|
if x <= y {
|
|
a = 2.0
|
|
}
|
|
// amd64:-"CMOV"
|
|
// arm64:-"CSEL"
|
|
// ppc64x:-"ISEL"
|
|
// wasm:-"Select"
|
|
return a
|
|
}
|
|
|
|
// On amd64, the following patterns trigger comparison inversion.
|
|
// Test that we correctly invert the CMOV condition
|
|
var gsink int64
|
|
var gusink uint64
|
|
|
|
func cmovinvert1(x, y int64) int64 {
|
|
if x < gsink {
|
|
y = -y
|
|
}
|
|
// amd64:"CMOVQGT"
|
|
return y
|
|
}
|
|
func cmovinvert2(x, y int64) int64 {
|
|
if x <= gsink {
|
|
y = -y
|
|
}
|
|
// amd64:"CMOVQGE"
|
|
return y
|
|
}
|
|
func cmovinvert3(x, y int64) int64 {
|
|
if x == gsink {
|
|
y = -y
|
|
}
|
|
// amd64:"CMOVQEQ"
|
|
return y
|
|
}
|
|
func cmovinvert4(x, y int64) int64 {
|
|
if x != gsink {
|
|
y = -y
|
|
}
|
|
// amd64:"CMOVQNE"
|
|
return y
|
|
}
|
|
func cmovinvert5(x, y uint64) uint64 {
|
|
if x > gusink {
|
|
y = -y
|
|
}
|
|
// amd64:"CMOVQCS"
|
|
return y
|
|
}
|
|
func cmovinvert6(x, y uint64) uint64 {
|
|
if x >= gusink {
|
|
y = -y
|
|
}
|
|
// amd64:"CMOVQLS"
|
|
return y
|
|
}
|
|
|
|
func cmovload(a []int, i int, b bool) int {
|
|
if b {
|
|
i++
|
|
}
|
|
// See issue 26306
|
|
// amd64:-"CMOVQNE"
|
|
return a[i]
|
|
}
|
|
|
|
func cmovstore(a []int, i int, b bool) {
|
|
if b {
|
|
i++
|
|
}
|
|
// amd64:"CMOVQNE"
|
|
a[i] = 7
|
|
}
|
|
|
|
var r0, r1, r2, r3, r4, r5 int
|
|
|
|
func cmovinc(cond bool, a, b, c int) {
|
|
var x0, x1 int
|
|
|
|
if cond {
|
|
x0 = a
|
|
} else {
|
|
x0 = b + 1
|
|
}
|
|
// arm64:"CSINC\tNE", -"CSEL"
|
|
r0 = x0
|
|
|
|
if cond {
|
|
x1 = b + 1
|
|
} else {
|
|
x1 = a
|
|
}
|
|
// arm64:"CSINC\tEQ", -"CSEL"
|
|
r1 = x1
|
|
|
|
if cond {
|
|
c++
|
|
}
|
|
// arm64:"CSINC\tEQ", -"CSEL"
|
|
r2 = c
|
|
}
|
|
|
|
func cmovinv(cond bool, a, b int) {
|
|
var x0, x1 int
|
|
|
|
if cond {
|
|
x0 = a
|
|
} else {
|
|
x0 = ^b
|
|
}
|
|
// arm64:"CSINV\tNE", -"CSEL"
|
|
r0 = x0
|
|
|
|
if cond {
|
|
x1 = ^b
|
|
} else {
|
|
x1 = a
|
|
}
|
|
// arm64:"CSINV\tEQ", -"CSEL"
|
|
r1 = x1
|
|
}
|
|
|
|
func cmovneg(cond bool, a, b, c int) {
|
|
var x0, x1 int
|
|
|
|
if cond {
|
|
x0 = a
|
|
} else {
|
|
x0 = -b
|
|
}
|
|
// arm64:"CSNEG\tNE", -"CSEL"
|
|
r0 = x0
|
|
|
|
if cond {
|
|
x1 = -b
|
|
} else {
|
|
x1 = a
|
|
}
|
|
// arm64:"CSNEG\tEQ", -"CSEL"
|
|
r1 = x1
|
|
}
|
|
|
|
func cmovsetm(cond bool, x int) {
|
|
var x0, x1 int
|
|
|
|
if cond {
|
|
x0 = -1
|
|
} else {
|
|
x0 = 0
|
|
}
|
|
// arm64:"CSETM\tNE", -"CSEL"
|
|
r0 = x0
|
|
|
|
if cond {
|
|
x1 = 0
|
|
} else {
|
|
x1 = -1
|
|
}
|
|
// arm64:"CSETM\tEQ", -"CSEL"
|
|
r1 = x1
|
|
}
|
|
|
|
func cmovFcmp0(s, t float64, a, b int) {
|
|
var x0, x1, x2, x3, x4, x5 int
|
|
|
|
if s < t {
|
|
x0 = a
|
|
} else {
|
|
x0 = b + 1
|
|
}
|
|
// arm64:"CSINC\tMI", -"CSEL"
|
|
r0 = x0
|
|
|
|
if s <= t {
|
|
x1 = a
|
|
} else {
|
|
x1 = ^b
|
|
}
|
|
// arm64:"CSINV\tLS", -"CSEL"
|
|
r1 = x1
|
|
|
|
if s > t {
|
|
x2 = a
|
|
} else {
|
|
x2 = -b
|
|
}
|
|
// arm64:"CSNEG\tMI", -"CSEL"
|
|
r2 = x2
|
|
|
|
if s >= t {
|
|
x3 = -1
|
|
} else {
|
|
x3 = 0
|
|
}
|
|
// arm64:"CSETM\tLS", -"CSEL"
|
|
r3 = x3
|
|
|
|
if s == t {
|
|
x4 = a
|
|
} else {
|
|
x4 = b + 1
|
|
}
|
|
// arm64:"CSINC\tEQ", -"CSEL"
|
|
r4 = x4
|
|
|
|
if s != t {
|
|
x5 = a
|
|
} else {
|
|
x5 = b + 1
|
|
}
|
|
// arm64:"CSINC\tNE", -"CSEL"
|
|
r5 = x5
|
|
}
|
|
|
|
func cmovFcmp1(s, t float64, a, b int) {
|
|
var x0, x1, x2, x3, x4, x5 int
|
|
|
|
if s < t {
|
|
x0 = b + 1
|
|
} else {
|
|
x0 = a
|
|
}
|
|
// arm64:"CSINC\tPL", -"CSEL"
|
|
r0 = x0
|
|
|
|
if s <= t {
|
|
x1 = ^b
|
|
} else {
|
|
x1 = a
|
|
}
|
|
// arm64:"CSINV\tHI", -"CSEL"
|
|
r1 = x1
|
|
|
|
if s > t {
|
|
x2 = -b
|
|
} else {
|
|
x2 = a
|
|
}
|
|
// arm64:"CSNEG\tPL", -"CSEL"
|
|
r2 = x2
|
|
|
|
if s >= t {
|
|
x3 = 0
|
|
} else {
|
|
x3 = -1
|
|
}
|
|
// arm64:"CSETM\tHI", -"CSEL"
|
|
r3 = x3
|
|
|
|
if s == t {
|
|
x4 = b + 1
|
|
} else {
|
|
x4 = a
|
|
}
|
|
// arm64:"CSINC\tNE", -"CSEL"
|
|
r4 = x4
|
|
|
|
if s != t {
|
|
x5 = b + 1
|
|
} else {
|
|
x5 = a
|
|
}
|
|
// arm64:"CSINC\tEQ", -"CSEL"
|
|
r5 = x5
|
|
}
|
|
|
|
func cmovzero1(c bool) int {
|
|
var x int
|
|
if c {
|
|
x = 182
|
|
}
|
|
// loong64:"MASKEQZ", -"MASKNEZ"
|
|
return x
|
|
}
|
|
|
|
func cmovzero2(c bool) int {
|
|
var x int
|
|
if !c {
|
|
x = 182
|
|
}
|
|
// loong64:"MASKNEZ", -"MASKEQZ"
|
|
return x
|
|
}
|
|
|
|
// Conditionally selecting between a value or 0 can be done without
|
|
// an extra load of 0 to a register on PPC64 by using R0 (which always
|
|
// holds the value $0) instead. Verify both cases where either arg1
|
|
// or arg2 is zero.
|
|
func cmovzeroreg0(a, b int) int {
|
|
x := 0
|
|
if a == b {
|
|
x = a
|
|
}
|
|
// ppc64x:"ISEL\t[$]2, R[0-9]+, R0, R[0-9]+"
|
|
return x
|
|
}
|
|
|
|
func cmovzeroreg1(a, b int) int {
|
|
x := a
|
|
if a == b {
|
|
x = 0
|
|
}
|
|
// ppc64x:"ISEL\t[$]2, R0, R[0-9]+, R[0-9]+"
|
|
return x
|
|
}
|