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

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merged 1 commit into from
Nov 2, 2023

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lmittmann
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Small change that improves the performance of OpCode.String() by changing:

- var opCodeToString = map[OpCode]string{
+ var opCodeToString = [256]string{

// Since the opcodes aren't all in order we can't use a regular slice.

Yes, but we can use an array and define opcodes using a key-value-pair as one would do in a map (so order still does not matter).

@holiman holiman changed the title core/vm: Performance Tweak of OpCode.String() core/vm: performance tweak of OpCode.String() Nov 1, 2023
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neat!

@karalabe karalabe added this to the 1.13.5 milestone Nov 2, 2023
@karalabe karalabe merged commit a3be381 into ethereum:master Nov 2, 2023
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devopsbo3 pushed a commit to HorizenOfficial/go-ethereum that referenced this pull request Nov 10, 2023
make `opCodeToString` a `[256]string` array

Co-authored-by: lmittmann <[email protected]>
devopsbo3 added a commit to HorizenOfficial/go-ethereum that referenced this pull request Nov 10, 2023
devopsbo3 added a commit to HorizenOfficial/go-ethereum that referenced this pull request Nov 10, 2023
Dergarcon pushed a commit to specialmechanisms/mev-geth-0x2mev that referenced this pull request Jan 31, 2024
make `opCodeToString` a `[256]string` array

Co-authored-by: lmittmann <[email protected]>
gzliudan pushed a commit to gzliudan/XDPoSChain that referenced this pull request Mar 1, 2024
make `opCodeToString` a `[256]string` array

Co-authored-by: lmittmann <[email protected]>
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4 participants