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Optimizations#4006

Merged

Earlopain merged 28 commits intomainruby/prism:mainfrom

perfruby/prism:perfCopy head branch name to clipboard

Mar 18, 2026

Conversation Commits28 (28)Checks Files changed

Merged

Optimizations#4006
Earlopain merged 28 commits intomainfrom
perf

Commits

Commits on Mar 17, 2026

Use an arena for parser metadata
kddnewton
committed
Use the parser arena for the constant pool
kddnewton
committed
Speed up the constant hash function
kddnewton
committed
Small optimization for parser_lex_magic_comment
kddnewton
committed
Scan forward through inline whitespace to avoid writing to parser->current.end continuously
kddnewton
committed
Fast-paths for ASCII-only identifiers
kddnewton
committed
Avoid unnecessary zero-ing of memory
kddnewton
committed
Pre-size arena to avoid unnecessary growth
kddnewton
committed
Force the allocation to be inlined
kddnewton
committed
Inline pm_node_list_append, pm_char_is_whitespace, and pm_char_is_inline_whitespace
kddnewton
committed
Avoid redundant whitespace scanning in magic comment lexing
kddnewton
committed
Potentially skip whitespace scanning for speed
kddnewton
committed
Inline three more functions, and lower the hash threshold for locals
kddnewton
committed
Lex simple integer values as we are lexing
kddnewton
committed
Only dispatch to lex_optional_float_suffix when it is possible
kddnewton
committed
Optimize constant pool hash for short strings
kddnewton
committed
Include string in constant pool entry to avoid chasing pointer
kddnewton
committed
SIMD/SWAR for strpbrk
kddnewton
committed
Fix a bug where we removed the \r warning
kddnewton
committed
Use a bloom filter to quickly reject local lookups
kddnewton
committed
Cache strpbrk lookup tables
kddnewton
committed
Fix up rebase errors
kddnewton
committed
More correctly detect SIMD on MSVC
kddnewton
committed
Ensure allocations to the constant pool are through the arena
kddnewton
committed

Commits on Mar 18, 2026

Fix ASAN reading off end of strpbrk cache

Earlopain
and
kddnewton
committed
Do not use GCC-specific syntax for lookup tables

Earlopain
and
kddnewton
committed
Fix infinite loop in parser_lex_magic_comment

Earlopain
and
kddnewton
committed
Fix C coverage by moving stuff slightly around
Earlopain
committed

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