alt Hacker NewsOh no, right after I started writing a binary decoder for 2.0. Does anybody know how much this changes things as far as a decoder is concerned?
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titzer • yesterday at 8:07 PM
It introduces new types (structs and arrays), a new section for tags, and several dozen instructions (first-class functions, GC, tail calls, and exception handling). It generalizes to multiple memories and tables, as well as adding 64-bit memories. The binary format changes aren't too bad, but it's a fairly big semantic addition.
Wasm only gets additive changes - the binary format can't change in a way that breaks any previously existing programs, because that would break the Web. So, you just have to add more opcodes to your implementation.