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Reduce GNU Make latency 17% for cosmo

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fgets() is now 4x faster which makes Make 2% faster. Landlock Make now
has a builtin $(uniq ...) function that uses critbit trees rather than
functional programming. Since uniq is the most important function this
optimization makes our cold start latency 15% faster.
This commit is contained in:
Justine Tunney 2022-08-19 15:29:24 -07:00
parent 8835b82a7c
commit d76dfadc7a
7 changed files with 96 additions and 11 deletions
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6
build/functions.mk
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@ -12,5 +12,9 @@
tail = $(wordlist 2,$(words $1),$1)
reverse = $(if $1,$(call reverse,$(call tail,$1)) $(firstword $1))
uniq = $(if $1,$(firstword $1) $(call uniq,$(filter-out $(firstword $1),$1)))
uniqr = $(if $1,$(call uniqr,$(filter-out $(firstword $1),$1)) $(firstword $1))
# polyfill uniq native (landlock make 1.4)
ifneq ($(call uniq,c b c a),c b a)
uniq = $(if $1,$(firstword $1) $(call uniq,$(filter-out $(firstword $1),$1)))
endif