[PATCH] D44134: [WebAssembly] Add WebAssemblyException information analysis

[Heejin Ahn via Phabricator via llvm-commits]

aheejin updated this revision to Diff 148585.
aheejin added a comment.

Updated exception grouping algorithm: now it simply gather all the BBs
dominated by an EH pad, rather than stopping at catchret/cleanupret/unreachable.
CFGStackify seems to work either way, and this makes things simpler:

1. We don't need to store frontier BBs ourselves and be able to just use existing MachineDominanceFrontier
2. We can replace catchret/cleanupret earlier in ExceptionPrepare, so we need a single pass rather than two passes.


Repository:
  rL LLVM

https://reviews.llvm.org/D44134

Files:
  include/llvm/CodeGen/MachineDominanceFrontier.h
  lib/Target/WebAssembly/CMakeLists.txt
  lib/Target/WebAssembly/WebAssembly.h
  lib/Target/WebAssembly/WebAssemblyExceptionInfo.cpp
  lib/Target/WebAssembly/WebAssemblyExceptionInfo.h
  lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
  unittests/Target/WebAssembly/CMakeLists.txt
  unittests/Target/WebAssembly/WebAssemblyExceptionInfoTest.cpp

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