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// 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[$][01]"
// wasm:"Select"
return x
}
// Floating point comparison. For EQ/NE, we must
// generate special code to handle NaNs.
func cmovfloateq(x, y float64) int {
a := 128
if x == y {
a = 256
}
// amd64:"CMOVQNE","CMOVQPC"
// arm64:"CSEL\tEQ"
// ppc64x:"ISEL\t[$]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
}