mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-08 18:30:04 +00:00
610992baca
Reviewers: sunfish Subscribers: llvm-commits, jfb Differential Revision: http://reviews.llvm.org/D10971 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241513 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
1.3 KiB
Plaintext
27 lines
1.3 KiB
Plaintext
//===-- README.txt - Notes for WebAssembly code gen -----------------------===//
|
|
|
|
This WebAssembly backend is presently in a very early stage of development.
|
|
The code should build and not break anything else, but don't expect a lot more
|
|
at this point.
|
|
|
|
For more information on WebAssembly itself, see the design documents:
|
|
* https://github.com/WebAssembly/design/blob/master/README.md
|
|
|
|
The following documents contain some information on the planned semantics and
|
|
binary encoding of WebAssembly itself:
|
|
* https://github.com/WebAssembly/design/blob/master/AstSemantics.md
|
|
* https://github.com/WebAssembly/design/blob/master/BinaryEncoding.md
|
|
|
|
Interesting work that remains to be done:
|
|
* Write a pass to restructurize irreducible control flow. This needs to be done
|
|
before register allocation to be efficient, because it may duplicate basic
|
|
blocks and WebAssembly performs register allocation at a whole-function
|
|
level. Note that LLVM's GPU code has such a pass, but it linearizes control
|
|
flow (e.g. both sides of branches execute and are masked) which is undesirable
|
|
for WebAssembly.
|
|
* Basic relooper to expose control flow as an AST.
|
|
* Figure out how to properly use MC for virtual ISAs. This may require some
|
|
refactoring of MC.
|
|
|
|
//===---------------------------------------------------------------------===//
|