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Store short strings in Values

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The vast majority of strings are < 16 bytes, and so can be stored
directly in a Value. This saves a heap allocation and an indirection.
This commit is contained in:
Eelco Dolstra 2019-04-23 12:20:27 +02:00
parent 2160258cc4
commit 742a8046de
10 changed files with 107 additions and 78 deletions
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3
src/libexpr/gc.hh
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@ -25,7 +25,8 @@ enum Tag {
// Value tags
tInt,
tBool,
tString,
tShortString,
tLongString,
tPath,
tNull,
tAttrs,