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//===-- 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. //===---------------------------------------------------------------------===//