Running LLV8

Invoke the d8 shell passing --llvm-filter:

out/x64.debug/d8 --llvm-filter=foo source.js

The filter supports wildcards. If you are not familiar with v8 filters, here is a short reference. The filter is a pattern that matches function names in this way:

• "*" all; the default
• "-" all but the top-level function
• "-name" all but the function "name"
• "" only the top-level function
• "name" only the function "name"
• "name*" only functions starting with "name"
• "~" none; the tilde is not an identifier

So if you are lucky, and none of the functions in your script contain currently unsupported code, you may just supply --llvm-filter=*. Otherwise limit llvm compilation to a set of functions using wildcards.