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cmd/internal/obj/arm64: simplify conclass

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Reduce repetition by pulling some common conversions into variables.

Change-Id: I8c1cc806236b5ecdadf90f4507923718fa5de9b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/650937
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Joel Sing 2025-02-20 22:54:34 +11:00
parent 0b31e6d4cc
commit c524db9ca8
1 changed files with 15 additions and 15 deletions
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30
src/cmd/internal/obj/arm64/asm7.go
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@ -1904,45 +1904,45 @@ func rclass(r int16) int {
// conclass classifies a constant.
func conclass(v int64) int {
vbitcon := uint64(v)
vnotcon := ^v
if v == 0 {
return C_ZCON
}
if isaddcon(v) {
if v <= 0xFFF {
if isbitcon(uint64(v)) {
if isbitcon(vbitcon) {
return C_ABCON0
}
return C_ADDCON0
}
if isbitcon(uint64(v)) {
if isbitcon(vbitcon) {
return C_ABCON
}
if movcon(v) >= 0 {
return C_AMCON
}
if movcon(^v) >= 0 {
if movcon(vnotcon) >= 0 {
return C_AMCON
}
return C_ADDCON
}
t := movcon(v)
if t >= 0 {
if isbitcon(uint64(v)) {
if t := movcon(v); t >= 0 {
if isbitcon(vbitcon) {
return C_MBCON
}
return C_MOVCON
}
if t := movcon(vnotcon); t >= 0 {
if isbitcon(vbitcon) {
return C_MBCON
}
return C_MOVCON
}
t = movcon(^v)
if t >= 0 {
if isbitcon(uint64(v)) {
return C_MBCON
}
return C_MOVCON
}
if isbitcon(uint64(v)) {
if isbitcon(vbitcon) {
return C_BITCON
}