GitHub - stefanpenner/perf-scratch

Branches Tags

Name		Name	Last commit message	Last commit date
Latest commit History 55 Commits
chains		chains
constant-transitions		constant-transitions
dir-hash-checksum		dir-hash-checksum
ember/chain		ember/chain
events		events
factory		factory
generate_guid		generate_guid
guid		guid
intern		intern
json		json
map		map
meta		meta
nodeperf		nodeperf
o_create		o_create
sets		sets
shared-functions		shared-functions
sym		sym
transducers		transducers
worker_thread		worker_thread
.DS_Store		.DS_Store
.d8_history		.d8_history
.gitignore		.gitignore
.swp		.swp
a		a
access.js		access.js
allocation-folding.js - v8 - V8 JavaScript Engine - Google Proje.webloc		allocation-folding.js - v8 - V8 JavaScript Engine - Google Proje.webloc
args-context.js		args-context.js
args.js		args.js
arguments.js		arguments.js
arrow-vs-bind.js		arrow-vs-bind.js
asddd.js		asddd.js
asm.o		asm.o
assert-opt-and-deopt.js		assert-opt-and-deopt.js
b		b
bind-no-bind.js		bind-no-bind.js
build.sh		build.sh
comments.js		comments.js
contains.js		contains.js
create.js		create.js
delete.js		delete.js
deploy.sh		deploy.sh
dom.js		dom.js
enumerating-objects.js		enumerating-objects.js
foo.js		foo.js
foo.txt		foo.txt
for-a-in-b.js		for-a-in-b.js
for-x-in-y.js		for-x-in-y.js
freeze-deopt.js		freeze-deopt.js
guid_for.js		guid_for.js
index-of-vs-char-at.js		index-of-vs-char-at.js
index-of-vs-regexp.js		index-of-vs-regexp.js
index-of-vs-regexp2.js		index-of-vs-regexp2.js
index.html		index.html
inlining.js		inlining.js
json.json		json.json
map.js		map.js
meta.js		meta.js
null.js		null.js
null_2.js		null_2.js
obj.js		obj.js
out.js		out.js
out.txt		out.txt
package.json		package.json
parse-headers.js		parse-headers.js
poly-loop.js		poly-loop.js
poly.js		poly.js
prime.js		prime.js
prototype.js		prototype.js
readme		readme
regexp-vs-include.js		regexp-vs-include.js
rope.js		rope.js
shape.js		shape.js
shared-function.js		shared-function.js
simple.js		simple.js
string.js		string.js
super-function-prime.js		super-function-prime.js
super.js		super.js
sym.js		sym.js
test.js		test.js
thing.js		thing.js
throw.js		throw.js
to-int.js		to-int.js
trace-deopt.sh		trace-deopt.sh
transducers.js		transducers.js
v8.log		v8.log
vector.js		vector.js
when-did-object-create-null-become-dict.js		when-did-object-create-null-become-dict.js
yarn.lock		yarn.lock

Repository files navigation

tracing fun:

node --trace_opt --trace_deopt --trace_inlining --code-comments --log_code --profile_hydrogen_code_stub_compilation --noconcurrent-recompilation --allow_natives_syntax  vector.js


  ../node/node  --print-code-stubs --code-comments

--print-code --print-code-stubs --print-opt-code --code-comments

GYP_DEFINES="v8_enable_disassembler=1 v8_object_print=1" ./configure


If you would like to investigate IR used by optimizing compiler use --trace-hydrogen and look at hydrogen.cfg (it can be viewed with C1 Visualizer).

~/src/v8/out/x64.debug/d8  --print_opt_code --code_comments ~/src/meta/null.js

 ~/src/v8/out/x64.debug/d8  --print_opt_code --code_comments --allow_natives_syntax --noconcurrent-recompilation ~/src/meta/foo.js | vim -