[PATCH] D46803: [WebAssembly] Add WebAssemblyExceptionPrepare pass

[Heejin Ahn via Phabricator via llvm-commits]

aheejin updated this revision to Diff 151637.
aheejin added a comment.

- Added a method to ensure a terminate pad is a single BB
- Using WasmEHInfo, now this adds `RETHROW` or `RETHROW_TO_CALLER` instruction depending on its unwind destination
- In `hoistCatches`, added handling of a case when `catch` instruction is not in the EH pad BB anymore
- Now uses several utility functions in WebAssemblyUtilities.cpp
- Added helper functions
- Misc. improvements here and there


Repository:
  rL LLVM

https://reviews.llvm.org/D46803

Files:
  lib/Target/WebAssembly/WebAssemblyExceptionPrepare.cpp
  test/CodeGen/WebAssembly/exception.ll

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