[all-commits] [llvm/llvm-project] 1c7b84: [WebAssembly] Make tag attribute's encoding uint8

[Heejin Ahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1c7b84108861ac92fb353891e7e4c747b6ea9f28
      https://github.com/llvm/llvm-project/commit/1c7b84108861ac92fb353891e7e4c747b6ea9f28
  Author: Heejin Ahn <aheejin at gmail.com>
  Date:   2021-06-21 (Mon, 21 Jun 2021)

  Changed paths:
    M llvm/include/llvm/BinaryFormat/Wasm.h
    M llvm/lib/MC/WasmObjectWriter.cpp
    M llvm/lib/Object/WasmObjectFile.cpp

  Log Message:
  -----------
  [WebAssembly] Make tag attribute's encoding uint8

This changes the encoding of the `attribute` field, which currently only
contains the value `0` denoting this tag is for an exception, from
`varuint32` to `uint8`. This field is effectively unused at the moment
and reserved for future use, and it is not likely to need `varuint32`
even in future.
See https://github.com/WebAssembly/exception-handling/pull/162.

This does not change any encoded binaries because `0` is encoded in the
same way both in `varuint32` and `uint8`.

Reviewed By: tlively

Differential Revision: https://reviews.llvm.org/D104571