mirror of
https://github.com/golang/go
synced 2024-09-15 22:20:06 +00:00
test/codegen: port arm64 byte slice zeroing tests
And delete them from asm_test. Change-Id: Id533130470da9176a401cb94972f626f43a62148 Reviewed-on: https://go-review.googlesource.com/103656 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Giovanni Bajo <rasky@develer.com>
This commit is contained in:
parent
4ed94ef1a8
commit
f2abca90a2
|
@ -429,54 +429,6 @@ var linuxARM64Tests = []*asmTest{
|
|||
pos: []string{"\tCSEL\t"},
|
||||
},
|
||||
// Check that zero stores are combine into larger stores
|
||||
{
|
||||
fn: `
|
||||
func $(b []byte) {
|
||||
_ = b[1] // early bounds check to guarantee safety of writes below
|
||||
b[0] = 0
|
||||
b[1] = 0
|
||||
}
|
||||
`,
|
||||
pos: []string{"MOVH\tZR"},
|
||||
neg: []string{"MOVB"},
|
||||
},
|
||||
{
|
||||
fn: `
|
||||
func $(b []byte) {
|
||||
_ = b[1] // early bounds check to guarantee safety of writes below
|
||||
b[1] = 0
|
||||
b[0] = 0
|
||||
}
|
||||
`,
|
||||
pos: []string{"MOVH\tZR"},
|
||||
neg: []string{"MOVB"},
|
||||
},
|
||||
{
|
||||
fn: `
|
||||
func $(b []byte) {
|
||||
_ = b[3] // early bounds check to guarantee safety of writes below
|
||||
b[0] = 0
|
||||
b[1] = 0
|
||||
b[2] = 0
|
||||
b[3] = 0
|
||||
}
|
||||
`,
|
||||
pos: []string{"MOVW\tZR"},
|
||||
neg: []string{"MOVB", "MOVH"},
|
||||
},
|
||||
{
|
||||
fn: `
|
||||
func $(b []byte) {
|
||||
_ = b[3] // early bounds check to guarantee safety of writes below
|
||||
b[2] = 0
|
||||
b[3] = 0
|
||||
b[1] = 0
|
||||
b[0] = 0
|
||||
}
|
||||
`,
|
||||
pos: []string{"MOVW\tZR"},
|
||||
neg: []string{"MOVB", "MOVH"},
|
||||
},
|
||||
{
|
||||
fn: `
|
||||
func $(h []uint16) {
|
||||
|
@ -499,23 +451,6 @@ var linuxARM64Tests = []*asmTest{
|
|||
pos: []string{"MOVW\tZR"},
|
||||
neg: []string{"MOVB", "MOVH"},
|
||||
},
|
||||
{
|
||||
fn: `
|
||||
func $(b []byte) {
|
||||
_ = b[7] // early bounds check to guarantee safety of writes below
|
||||
b[0] = 0
|
||||
b[1] = 0
|
||||
b[2] = 0
|
||||
b[3] = 0
|
||||
b[4] = 0
|
||||
b[5] = 0
|
||||
b[6] = 0
|
||||
b[7] = 0
|
||||
}
|
||||
`,
|
||||
pos: []string{"MOVD\tZR"},
|
||||
neg: []string{"MOVB", "MOVH", "MOVW"},
|
||||
},
|
||||
{
|
||||
fn: `
|
||||
func $(h []uint16) {
|
||||
|
@ -564,31 +499,6 @@ var linuxARM64Tests = []*asmTest{
|
|||
pos: []string{"MOVD\tZR"},
|
||||
neg: []string{"MOVB", "MOVH", "MOVW"},
|
||||
},
|
||||
{
|
||||
fn: `
|
||||
func $(b []byte) {
|
||||
_ = b[15] // early bounds check to guarantee safety of writes below
|
||||
b[0] = 0
|
||||
b[1] = 0
|
||||
b[2] = 0
|
||||
b[3] = 0
|
||||
b[4] = 0
|
||||
b[5] = 0
|
||||
b[6] = 0
|
||||
b[7] = 0
|
||||
b[8] = 0
|
||||
b[9] = 0
|
||||
b[10] = 0
|
||||
b[11] = 0
|
||||
b[12] = 0
|
||||
b[13] = 0
|
||||
b[15] = 0
|
||||
b[14] = 0
|
||||
}
|
||||
`,
|
||||
pos: []string{"STP"},
|
||||
neg: []string{"MOVB", "MOVH", "MOVW"},
|
||||
},
|
||||
{
|
||||
fn: `
|
||||
func $(h []uint16) {
|
||||
|
|
|
@ -12,6 +12,10 @@ var sink64 uint64
|
|||
var sink32 uint32
|
||||
var sink16 uint16
|
||||
|
||||
// ------------- //
|
||||
// Loading //
|
||||
// ------------- //
|
||||
|
||||
func load_le64(b []byte) {
|
||||
// amd64:`MOVQ\s\(.*\),`
|
||||
// s390x:`MOVDBR\s\(.*\),`
|
||||
|
@ -94,6 +98,10 @@ func load_be16_idx(b []byte, idx int) {
|
|||
sink16 = binary.BigEndian.Uint16(b[idx:])
|
||||
}
|
||||
|
||||
// ------------- //
|
||||
// Storing //
|
||||
// ------------- //
|
||||
|
||||
func store_le64(b []byte) {
|
||||
// amd64:`MOVQ\s.*\(.*\)$`,-`SHR.`
|
||||
// arm64:`MOVD`,-`MOV[WBH]`
|
||||
|
@ -171,3 +179,36 @@ func store_be16_idx(b []byte, idx int) {
|
|||
// arm64:`MOVH`,`REV16W`,-`MOVB`
|
||||
binary.BigEndian.PutUint16(b[idx:], sink16)
|
||||
}
|
||||
|
||||
// ------------- //
|
||||
// Zeroing //
|
||||
// ------------- //
|
||||
|
||||
// Check that zero stores are combined into larger stores
|
||||
|
||||
func zero_2(b1, b2 []byte) {
|
||||
// bounds checks to guarantee safety of writes below
|
||||
_, _ = b1[1], b2[1]
|
||||
b1[0], b1[1] = 0, 0 // arm64:"MOVH\tZR",-"MOVB"
|
||||
b2[1], b2[0] = 0, 0 // arm64:"MOVH\tZR",-"MOVB"
|
||||
}
|
||||
|
||||
func zero_4(b1, b2 []byte) {
|
||||
_, _ = b1[3], b2[3]
|
||||
b1[0], b1[1], b1[2], b1[3] = 0, 0, 0, 0 // arm64:"MOVW\tZR",-"MOVB",-"MOVH"
|
||||
b2[2], b2[3], b2[1], b2[0] = 0, 0, 0, 0 // arm64:"MOVW\tZR",-"MOVB",-"MOVH"
|
||||
}
|
||||
|
||||
func zero_8(b []byte) {
|
||||
_ = b[7]
|
||||
b[0], b[1], b[2], b[3] = 0, 0, 0, 0
|
||||
b[4], b[5], b[6], b[7] = 0, 0, 0, 0 // arm64:"MOVD\tZR",-"MOVB",-"MOVH",-"MOVW"
|
||||
}
|
||||
|
||||
func zero_16(b []byte) {
|
||||
_ = b[15]
|
||||
b[0], b[1], b[2], b[3] = 0, 0, 0, 0
|
||||
b[4], b[5], b[6], b[7] = 0, 0, 0, 0
|
||||
b[8], b[9], b[10], b[11] = 0, 0, 0, 0
|
||||
b[12], b[13], b[14], b[15] = 0, 0, 0, 0 // arm64:"STP",-"MOVB",-"MOVH",-"MOVW"
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue