[PATCH] D108960: [WebAssembly] Add Wasm SjLj support

[Heejin Ahn via Phabricator via llvm-commits]

aheejin created this revision.
aheejin added reviewers: dschuff, tlively.
Herald added subscribers: wingo, ecnelises, sunfish, hiraditya, jgravelle-google, sbc100.
aheejin requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

This add support for SjLj using Wasm exception handling instructions:
https://github.com/WebAssembly/exception-handling/blob/master/proposals/exception-handling/Exceptions.md

This does not yet support the mixed use of EH and SjLj within a
function. It will be added in a follow-up CL.

This currently passes all SjLj Emscripten tests for wasm0/1/2/3/s,
except for the below:

- `test_longjmp_standalone`: Uses Node
- `test_dlfcn_longjmp`: Uses NodeRAWFS
- `test_longjmp_throw`: Mixes EH and SjLj
- `test_exceptions_longjmp1`: Mixes EH and SjLj
- `test_exceptions_longjmp2`: Mixes EH and SjLj
- `test_exceptions_longjmp3`: Mixes EH and SjLj


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D108960

Files:
  llvm/lib/CodeGen/AsmPrinter/WasmException.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
  llvm/lib/MC/WasmObjectWriter.cpp
  llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
  llvm/lib/Target/WebAssembly/WebAssemblyISelDAGToDAG.cpp
  llvm/lib/Target/WebAssembly/WebAssemblyLowerEmscriptenEHSjLj.cpp
  llvm/test/CodeGen/WebAssembly/lower-em-sjlj.ll
  llvm/test/CodeGen/WebAssembly/lower-wasm-sjlj.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D108960.369588.patch
Type: text/x-patch
Size: 42058 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20210831/a0fcc354/attachment.bin>