[PATCH] D94045: [WebAssembly] Ensure terminate pads are a single BB

[Heejin Ahn via Phabricator via llvm-commits]

aheejin created this revision.
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This ensures every single terminate pad is a single BB in the form of:

  %exn = catch $__cpp_exception
  call @__clang_call_terminate(%exn)
  unreachable

This is a preparation for HandleEHTerminatePads pass, which will be
added in a later CL and will run after CFGStackify. That pass duplicates
terminate pads with a `catch_all` instruction, and duplicating it
becomes simpler if we can ensure every terminate pad is a single BB.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D94045

Files:
  llvm/lib/Target/WebAssembly/WebAssemblyCFGStackify.cpp
  llvm/lib/Target/WebAssembly/WebAssemblyLateEHPrepare.cpp
  llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
  llvm/lib/Target/WebAssembly/WebAssemblyUtilities.h
  llvm/test/CodeGen/WebAssembly/exception.ll

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