Martin Kustermann
10429f4e89
Adds some more documentation about * using `wami` to dump section stats / wasm code * building & testing dart2wasm ... Change-Id: I439daf04d8f4599e817577c3b4cb58053a836b47 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/365806 Commit-Queue: Martin Kustermann <kustermann@google.com> Reviewed-by: Ömer Ağacan <omersa@google.com>
888 B
888 B
Inspecting the generated Wasm code
Using the compiler itself
The compiler allows printing the Wasm code for all functions by using
--print-wasm
pkg/dart2Wasm/tool/compile_benchmark --compiler-asserts --print-wasm app.dart app.wasm
Use wami to inspect Wasm files
The V8 repository contains a wami tool to inspect Wasm files.
First ensure you Checkout & Build V8. That will result in a
out/x64.release/wami binary.
Consider putting it into PATH or adding an
alias wami=<path-to-v8>/out/x64.release/wami into shellrc.
Inspect sections of Wasm file
It can be used to dump section statistics
% wami --section-stats -o app.stats app.wasm
Inspect contents of Wasm file
It can be used to dump the entire Wasm file with or without offsets
% wami --offsets --full-wat -o app.wat app.wasm
% wami --full-wat -o app.wat app.wasm