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161ff8c112
v8/tools
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Olivier Flückiger 161ff8c112 Reland "[static-roots] Use static map range checks instead of instance types" 
This is a reland of commit 77d08fcde5

Original change's description:
> [static-roots] Use static map range checks instead of instance types
>
> Some instance types, or type ranges, corresponds to a range of pointers
> in the static read only roots table. Instead of loading the instance
> type of a map it can therefore be beneficial to compare the map itself
> against this range.
>
> This CL adds:
>
> * Add infrastructure to compute and output a mapping of
>   `(instance_type_first, instance_type_last) ->
>      (map_ptr_first, map_ptr_last)` for interesting ranges.
> * Extend InstanceTypeChecker to use these ranges.
>
> For single instance types that map onto a range of maps it is not
> obvious which check is faster. Checking the map range saves a load,
> whereas checking the instance type saves an additional jump.
>
> Bug: v8:13466
> Change-Id: I670fc10fad9920645c0ce0d976ae7e7a13a86e60
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4188379
> Reviewed-by: Jakob Linke <jgruber@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Commit-Queue: Olivier Flückiger <olivf@chromium.org>
> Auto-Submit: Olivier Flückiger <olivf@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#85599}

Bug: v8:13466
Change-Id: I0317a7b88e391e0a7502cc056a2fe691d294fba1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4217131
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Auto-Submit: Olivier Flückiger <olivf@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#85614}
2023-02-02 10:43:34 +00:00
..
bazel [bazel] Update prebuilt bazel 2023-01-27 08:36:09 +00:00
builtins-pgo Configure PGO builders 2023-01-27 13:54:32 +00:00
cfi [cfi] Use inclusive terminology 2020-07-28 05:57:41 +00:00
clusterfuzz [heap] Remove flag --shared-string-table-using-shared-space 2023-01-26 12:20:21 +00:00
cppgc [mips32] Delete mips32 from v8 2022-09-13 07:54:54 +00:00
debug_helper [v8windbg] Fix crash when reading external strings 2022-11-28 16:13:09 +00:00
dev [static-roots] Rename --static-roots to --generate-static-roots 2022-12-28 14:46:41 +00:00
gcmole [gcmole] Run gcmole on bots with matching architecture 2023-01-17 13:56:18 +00:00
generate_shim_headers [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
heap-layout [tools] Add placeholder comment for analytics code 2022-08-22 12:41:18 +00:00
heap-stats Rename CodeDataContainer to Code 2023-01-18 08:44:08 +00:00
js [tools] Fix parse-processor 2022-08-04 19:00:33 +00:00
jsfunfuzz
link_clicker.extension
mb [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
memory [tools] Add tools/memory/rss.py to sample RSS usage 2022-10-21 16:38:40 +00:00
msan Rename msan blacklist.txt to ignorelist.txt 2021-05-27 08:24:50 +00:00
perf
profiling [tools] linux-perf-d8.py: Add option to skip pprof 2022-10-19 13:13:57 +00:00
profview [tools] Use code attribution in timeline view 2022-12-14 10:04:50 +00:00
release [tools] Fix tools/mergeinfo.py python3 issues 2022-10-11 13:09:33 +00:00
sanitizers [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
snapshot [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
system-analyzer Reland "Use BigInts in processor.mjs and related code to avoid unsafe ints in calculations" 2022-12-19 15:15:48 +00:00
testrunner Support pushing additional files to Android in tests cases 2023-02-01 13:36:47 +00:00
toolchain [mips32] Delete mips32 from v8 2022-09-13 07:54:54 +00:00
torque Rename Code to InstructionStream 2023-01-17 12:45:45 +00:00
tracing/proto-converter [tools] Refactor, use built-in Array.flat() instead of custom flatten method 2021-05-31 07:46:15 +00:00
turbolizer [turbolizer] Allow live range view to be narrowed by instructions 2023-01-10 14:51:04 +00:00
ubsan Reland "Update V8 DEPS (trusted)" 2022-11-30 14:46:31 +00:00
unittests [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
v8.xcodeproj
v8windbg [v8windbg] Find Isolate by checking g_current_isolate_ 2023-02-01 01:00:25 +00:00
valgrind/asan
vim [vim] Update vim scripts 2021-04-01 16:14:04 +00:00
visual_studio
wasm [wasm] Remove redundant subclass from ModuleDecoder 2023-01-26 09:09:40 +00:00
wasm-compilation-hints [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
zone-stats [CSA][codegen] Add BitcastElision Phase 2022-10-20 02:29:57 +00:00
__init__.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
.vpython3 [test] Add ClusterFuzz wheel to V8 and analyze crashes 2022-12-12 16:12:31 +00:00
adb-d8.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
android-build.sh
android-run.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
android-sync.sh [mjsunit][tools] Sync module files for tests 2020-10-07 12:45:19 +00:00
arguments.mjs [tools] Cleanup Arguments processing in tools 2021-06-01 09:43:46 +00:00
avg.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
bash-completion.sh [bash-completion] Support some gm.py completion 2021-03-24 16:24:25 +00:00
bigint-tester.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
BUILD.gn Add tools/.vpython3 file to test runner deps 2022-12-13 12:29:16 +00:00
callstats_groups.py [web snapshots] Remove web snapshots 2023-01-31 12:43:03 +00:00
callstats-from-telemetry.sh [tools] Fix callstats 2022-02-17 19:12:24 +00:00
callstats.html [web snapshots] Remove web snapshots 2023-01-31 12:43:03 +00:00
callstats.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
check-inline-includes.sh
check-static-initializers.sh Bump expected static initializers count from 2 to 3 2021-02-12 09:47:44 +00:00
check-unused-bailouts.sh
check-unused-symbols.sh
codemap.mjs Reland "Use BigInts in processor.mjs and related code to avoid unsafe ints in calculations" 2022-12-19 15:15:48 +00:00
collect_deprecation_stats.sh
compare_torque_output.py [v8] Migrate compare_torque_output to py3 2022-02-08 15:46:11 +00:00
compare-table-gen.js
consarray.mjs [tools] Migrate more tools to ES6 classes 2021-01-11 16:40:39 +00:00
cpu.sh
cross_build_gcc.sh
csvparser.mjs [tools][system-analyzer] Various improvements 2022-04-08 19:46:22 +00:00
DEPS
detect-builtins.js
disasm.py [mips32] Delete mips32 from v8 2022-09-13 07:54:54 +00:00
draw_instruction_graph.sh
dump-cpp.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
dumpcpp-driver.mjs [tools][system-analyzer] Add local symbol server 2021-07-01 09:59:17 +00:00
dumpcpp.mjs [tools][system-analyzer] Speed up log parsing 2022-04-06 11:31:03 +00:00
eval_gc_nvp.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
eval_gc_time.sh Remove all leftovers of store buffer 2021-11-10 09:29:41 +00:00
find_depot_tools.py
find-builtin [tools] Add a tool for finding builtins 2021-04-07 12:51:38 +00:00
find-commit-for-patch.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
freebsd-tick-processor
fuzz-harness.sh
gc_nvp_common.py
gc-nvp-to-csv.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
gc-nvp-trace-processor.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
gdb-v8-support.py [tools] Fix gdb redirect helper in gdb-v8-support.py 2021-10-21 12:27:45 +00:00
gdbinit cppgc: Introduce subtle::UncompressedMember 2023-01-26 23:51:28 +00:00
gen-inlining-tests.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
gen-keywords-gen-h.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
gen-postmortem-metadata.py Rename Code to InstructionStream 2023-01-17 12:45:45 +00:00
gen-v8-gn.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
generate-builtins-tests.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
generate-header-include-checks.py [mips32] Delete mips32 from v8 2022-09-13 07:54:54 +00:00
generate-runtime-call-stats.py [tools] Fix retention of json files in RCS script 2020-03-26 12:07:56 +00:00
generate-ten-powers.scm
get_landmines.py [py3] Bump get_landmines to py3 2022-04-04 11:03:36 +00:00
grokdump.py [tools] grokdump: Fix objdump detection for Python3 2022-06-23 14:28:54 +00:00
ic-processor [tools] Convert JS-tools to ES6 modules 2020-09-28 14:40:18 +00:00
ic-processor-driver.mjs [tools][system-analyzer] Add local symbol server 2021-07-01 09:59:17 +00:00
index.html [tools] Fix index.html links 2022-08-29 14:14:56 +00:00
linux-tick-processor [tools] Port more tools to ES6 classes 2020-11-04 14:45:41 +00:00
lldb_commands.py [tools] Set up source map for lldb 2021-07-01 18:04:17 +00:00
locs.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
logreader.mjs Reland "Use BigInts in processor.mjs and related code to avoid unsafe ints in calculations" 2022-12-19 15:15:48 +00:00
mac-nm [tools] Profview fixes 2022-08-30 13:55:08 +00:00
mac-tick-processor
Makefile.tags
objdump-v8 [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
OWNERS [owners] Includes infra team as tools owners 2021-11-25 07:55:08 +00:00
package-lock.json [tools] Add README.md file and package.json for local development 2021-07-05 16:43:28 +00:00
package.json [tools] Add README.md file and package.json for local development 2021-07-05 16:43:28 +00:00
parse-processor [tools] Convert JS-tools to ES6 modules 2020-09-28 14:40:18 +00:00
parse-processor-driver.mjs [tools][system-analyzer] Add local symbol server 2021-07-01 09:59:17 +00:00
parse-processor.html [tools] Add placeholder comment for analytics code 2022-08-22 12:41:18 +00:00
parse-processor.mjs [tools] Fix parse-processor 2022-08-04 19:00:33 +00:00
perf-compare.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
predictable_wrapper.py [tools] Clean up predictable wrapper py2 code 2022-07-18 07:38:42 +00:00
PRESUBMIT.py [builtins][pgo] Add helper script to interact with PGO profile bucket 2023-01-12 14:16:16 +00:00
process-wasm-compilation-times.py [wasm] Tweak constants for estimating code space size 2022-03-15 14:41:13 +00:00
profile_view.js
profile_view.mjs [tools] Modernize tools .mjs files 2020-11-10 12:32:26 +00:00
profile.mjs Reland "Use BigInts in processor.mjs and related code to avoid unsafe ints in calculations" 2022-12-19 15:15:48 +00:00
README.md [tools] Add README.md file and package.json for local development 2021-07-05 16:43:28 +00:00
regexp-sequences.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
run_perf.py [tools] Improve run_perf.py 2023-01-31 10:24:16 +00:00
run-clang-tidy.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
run-num-fuzzer.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
run-tests.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
run-wasm-api-tests.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
run.py [tools] Switch script wrapper to Py3 2022-04-04 14:13:17 +00:00
shell-utils.h Move remaining files in src/ 2019-05-24 18:24:36 +00:00
sourcemap.mjs [tools][system-analyzer] Add profiler-panel 2022-04-26 17:57:03 +00:00
splaytree.mjs [tools] Improve system analyzer 2022-03-02 13:41:32 +00:00
stats-viewer.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
test262-results-parser.js
tickprocessor-driver.mjs [tools][system-analyzer] Add local symbol server 2021-07-01 09:59:17 +00:00
tickprocessor.mjs [tools][profile] Add support for maglev optimisation markers 2022-07-27 08:48:25 +00:00
try_perf.py Remove nexus7 bot flag 2022-12-09 13:37:51 +00:00
turbolizer-perf.py
update-object-macros-undef.py
v8_presubmit.py [maglev] Consider DataView/TypedArray backed by RAB and GSAB 2023-01-10 10:51:07 +00:00
v8heapconst.py Reland "[static-roots] Use static map range checks instead of instance types" 2023-02-02 10:43:34 +00:00
whitespace.txt Revert "[test] ownership" 2023-01-17 11:28:27 +00:00
windbg.js [heap] Add base class for LargeObjectSpaces 2019-10-25 09:22:57 +00:00
windows-tick-processor.bat [tools] Use .mjs in windows-tick-processor.bat 2021-01-07 09:00:23 +00:00
wpr.wprp Step 1 (of 3-ish): Basic ETW Instrumentation in V8 2021-01-05 20:11:03 +00:00

README.md

TOOLS

This directory contains debugging and investigation tools for V8.

The contents are regularly mirrored to http://v8.dev/tools.

Local Development

For local development you have to start a local webserver under http://localhost:8000:

  cd tools/;
  npm install;
  ws;

Local Symbol Server

The system-analyzer can symbolize profiles for local binaries by running a local symbol server

  cd tools/;
  ws --stack system-analyzer/lws-middleware.js lws-static cors;

Note that the local symbol server will run nm and objdump and has access to your files.