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test/codegen: port tbz/tbnz arm64 tests

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And delete them from asm_test.

Change-Id: I34fcf85ae8ce09cd146fe4ce6a0ae7616bd97e2d
Reviewed-on: https://go-review.googlesource.com/102296
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:
Alberto Donizetti 2018-03-23 18:50:39 +01:00
parent 786899a72a
commit a27cd4fd31
2 changed files with 26 additions and 40 deletions
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40
src/cmd/compile/internal/gc/asm_test.go
View file

@ -481,46 +481,6 @@ var linuxARM64Tests = []*asmTest{
pos: []string{"LSL\t\\$17"}, pos: []string{"LSL\t\\$17"},
neg: []string{"CMP"}, neg: []string{"CMP"},
}, },
{
fn: `
func $(a int32, ptr *int) {
if a >= 0 {
*ptr = 0
}
}
`,
pos: []string{"TBNZ"},
},
{
fn: `
func $(a int64, ptr *int) {
if a >= 0 {
*ptr = 0
}
}
`,
pos: []string{"TBNZ"},
},
{
fn: `
func $(a int32, ptr *int) {
if a < 0 {
*ptr = 0
}
}
`,
pos: []string{"TBZ"},
},
{
fn: `
func $(a int64, ptr *int) {
if a < 0 {
*ptr = 0
}
}
`,
pos: []string{"TBZ"},
},
// Load-combining tests. // Load-combining tests.
{ {
fn: ` fn: `

26
test/codegen/comparisons.go
View file

@ -106,3 +106,29 @@ func CmpMem5(p **int) {
// amd64:`CMPL\truntime.writeBarrier\(SB\), [$]0` // amd64:`CMPL\truntime.writeBarrier\(SB\), [$]0`
*p = nil *p = nil
} }
// Check tbz/tbnz are generated when comparing against zero on arm64
func CmpZero1(a int32, ptr *int) {
if a < 0 { // arm64:"TBZ"
*ptr = 0
}
}
func CmpZero2(a int64, ptr *int) {
if a < 0 { // arm64:"TBZ"
*ptr = 0
}
}
func CmpZero3(a int32, ptr *int) {
if a >= 0 { // arm64:"TBNZ"
*ptr = 0
}
}
func CmpZero4(a int64, ptr *int) {
if a >= 0 { // arm64:"TBNZ"
*ptr = 0
}
}