1 //===-- README.txt - Notes for WebAssembly code gen -----------------------===//
3 This WebAssembly backend is presently in a very early stage of development.
4 The code should build and not break anything else, but don't expect a lot more
7 For more information on WebAssembly itself, see the design documents:
8 * https://github.com/WebAssembly/design/blob/master/README.md
10 The following documents contain some information on the planned semantics and
11 binary encoding of WebAssembly itself:
12 * https://github.com/WebAssembly/design/blob/master/AstSemantics.md
13 * https://github.com/WebAssembly/design/blob/master/BinaryEncoding.md
15 Interesting work that remains to be done:
16 * Write a pass to restructurize irreducible control flow. This needs to be done
17 before register allocation to be efficient, because it may duplicate basic
18 blocks and WebAssembly performs register allocation at a whole-function
19 level. Note that LLVM's GPU code has such a pass, but it linearizes control
20 flow (e.g. both sides of branches execute and are masked) which is undesirable
22 * Basic relooper to expose control flow as an AST.
23 * Figure out how to properly use MC for virtual ISAs. This may require some
26 //===---------------------------------------------------------------------===//