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• How to Cross Compile LLVM: https://llvm.org/docs/HowToCrossCompileLLVM.html
• Building LLVM with CMake: https://llvm.org/docs/CMake.html
• Hints from wasi-sdk Makefile: https://github.com/CraneStation/wasi-sdk/blob/master/Makefile
• Try compiling natively (needed for llvm-tblgen and clang-tblgen)
  • cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86;WebAssembly" -DLLVM_ENABLE_PROJECTS="lld;clang" ../llvm
• Try building LLVM with WASI:
• cmake -G Ninja -DCMAKE_AR=”/usr/local/google/home/binji/dev/llvm-project/build/bin/llvm-ar” -DCMAKE_RANLIB=”/usr/local/google/home/binji/dev/llvm-project/build/bin/llvm-ranlib” -DCMAKE_C_COMPILER="/usr/local/google/home/binji/dev/wasi-sdk-5.0/opt/wasi-sdk/bin/clang" -DCMAKE_CXX_COMPILER="/usr/local/google/home/binji/dev/wasi-sdk-5.0/opt/wasi-sdk/bin/clang++" -DCMAKE_CROSSCOMPILING=True -DCMAKE_INSTALL_PREFIX=/usr/local/google/home/binji/dev/wasi-clang -DLLVM_TABLEGEN=/usr/local/google/home/binji/dev/llvm-project/build/bin/llvm-tblgen -DCLANG_TABLEGEN=/

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#include "common.h"
#include "options.h"
#include "vec.h"

#include "third_party/json.h"

#define HOOK(name, ...)
#define DEBUG(...) (void)0

// See s_opcode_bits below

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Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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Custom sections in the text format

This page describes a proposal for representing custom sections in the text format.

Rationale

Currently it is impossible to round-trip a WebAssembly module between the binary and text formats without loss of information because there is no way to

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Hello

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const page_size = 65536;
const memory_pages = 2048 * 2;

let memory = new WebAssembly.Memory({initial: memory_pages});
let buffer = new Uint8Array(memory.buffer);
let registry = {env: {memory}};

function module(bytes) {
  let buffer = new ArrayBuffer(bytes.length);
  let view = new Uint8Array(buffer);

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#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>

#include "benchmark/benchmark.h"

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(import "env" "memory" (memory 1))
(import "env" "text" (func $text (param i32 i32 i32)))

;; The current game mode. 0: init, 1: wait, 2: reset, 3:game, 4:winning
(global $mode (mut i32) (i32.const 0))
;; The mode timer, in frames.
(global $mode-timer (mut i32) (i32.const 60))
;; The maximum wall to render or collide against. Used to clear the maze.
(global $max-wall-addr (mut i32) (i32.const 0x2778))

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;; Memory map:
;;
;; [0x19a3 .. 0x019a4]  x, y mouse click position
;; [0x1a60 .. 0x01aa0]  16 RGBA colors       u32[16]
;; [0x1aa0 .. 0x01ea0]  16x16 emojis 4bpp    u8[8][128]
;; [0x1ea0 .. 0x01ef0]  8x8 digits 1bpp      u8[10][8]
;; [0x1ef0 .. 0x01f18]  gameover 1bpp        u8[5][8]
;; [0x1f18 .. 0x01f60]  18 match patterns    u32[18]
;; [0x1f60 .. 0x01ff0]  18 shift masks       u64[18]
;; [0x20a0 .. 0x020e0]  8x8 grid bitmap      u64[8]

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(module
  (import "env" "memory" (memory 1))
  (func $memcpy (export "memcpy") (param i32 i32 i32) (result i32)
    (local i32)
    (block (result i32)  ;; label = @1
      (set_local 3
        (get_local 0))
      (if  ;; label = @3
        (i32.eq
          (i32.and