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core/vm: performance tweak of OpCode.String() (#28453)

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make `opCodeToString` a `[256]string` array

Co-authored-by: lmittmann <lmittmann@users.noreply.github.com>
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lmittmann 2023-11-02 07:54:28 +01:00 committed by GitHub
parent f4ac548619
commit a3be38127c
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1 changed files with 4 additions and 7 deletions
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11
core/vm/opcodes.go
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@ -224,8 +224,7 @@ const (
SELFDESTRUCT OpCode = 0xff
)
// Since the opcodes aren't all in order we can't use a regular slice.
var opCodeToString = map[OpCode]string{
var opCodeToString = [256]string{
// 0x0 range - arithmetic ops.
STOP: "STOP",
ADD: "ADD",
@ -399,12 +398,10 @@ var opCodeToString = map[OpCode]string{
}
func (op OpCode) String() string {
str := opCodeToString[op]
if len(str) == 0 {
return fmt.Sprintf("opcode %#x not defined", int(op))
if s := opCodeToString[op]; s != "" {
return s
}
return str
return fmt.Sprintf("opcode %#x not defined", int(op))
}
var stringToOp = map[string]OpCode{