[PATCH] D101985: [WebAssembly] Support Emscripten EH/SjLj in Wasm64

[Heejin Ahn via Phabricator via llvm-commits]

aheejin created this revision.
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In wasm64, the signatures of some library functions and global variables
defined in Emscripten change:

- `emscripten_longjmp`: `(i32, i32) -> ()` -> `(i64, i32) -> ()` This changes because the first argument is the address of a memory buffer. This in turn causes more changes below.
- `setThrew`: `(i32, i32) -> ()` -> `(i64, i32) -> ()` `emscripten_longjmp` calls `setThrew` with the i64 buffer argument as the first parameter.
- `__THREW__` (global var): `i32` to `i64` `setThrew`'s first argument is set to this `__THREW__` variable, so it should change to i64 as well.
- `testSetjmp`: `(i32, i32*, i32) -> (i32)` -> `(i64, i32*, i32) ->

(i32)`

  In the code transformation done in this pass, the value of `__THREW__`
  is passed as the first parameter of `testSetjmp`.

This patch creates some helper functions to easily get types that become
different depending on the wasm32/wasm64, and uses them to change
various function signatures and code transformations. Also updates the
tests with WASM32/WASM64 check lines.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D101985

Files:
  llvm/lib/Target/WebAssembly/WebAssemblyLowerEmscriptenEHSjLj.cpp
  llvm/test/CodeGen/WebAssembly/lower-em-ehsjlj-options.ll
  llvm/test/CodeGen/WebAssembly/lower-em-exceptions.ll
  llvm/test/CodeGen/WebAssembly/lower-em-sjlj.ll

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