[all-commits] [llvm/llvm-project] 51fb5b: [WebAssembly] Support WasmEHFuncInfo serialization

[Heejin Ahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 51fb5bf4d6c91075abdfd24769ef60fcfd810baa
      https://github.com/llvm/llvm-project/commit/51fb5bf4d6c91075abdfd24769ef60fcfd810baa
  Author: Heejin Ahn <aheejin at gmail.com>
  Date:   2021-02-22 (Mon, 22 Feb 2021)

  Changed paths:
    M llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.cpp
    M llvm/lib/Target/WebAssembly/WebAssemblyMachineFunctionInfo.h
    M llvm/test/CodeGen/WebAssembly/function-info.mir

  Log Message:
  -----------
  [WebAssembly] Support WasmEHFuncInfo serialization

This adds support for serialization of `WasmEHFuncInfo`, in the form of
<Source BB Number, Unwind destination BB number>. To make YAML mapping
work, we needed to make a copy of the existing `SrcToUnwindDest` map
within `yaml::WebAssemblyMachineFunctionInfo`.

It was hard to add EH MIR tests for CFGStackify because `WasmEHFuncInfo`
could not be read from test MIR files. This adds the serialization
support for that to make EH MIR tests easier.

Reviewed By: dschuff

Differential Revision: https://reviews.llvm.org/D97174