kripken

(module
  (type $0 (func (result i32)))
  (type $1 (func (result i64)))
  (memory $0 0)
  (export "f32.informally_known_as_plain_snan" (func $4))
  (export "f32.all_ones_nan" (func $5))
  (export "f32.nan" (func $0))
  (export "f32.positive_nan" (func $1))
  (export "f32.plain_nan" (func $3))
  (export "f32.negative_nan" (func $2))

kripken

(module
  (type $0 (func (result i32)))
  (type $1 (func (result i64)))
  (memory $0 0)
  (export "f32.nan" (func $0))
  (export "f32.positive_nan" (func $1))
  (export "f32.negative_nan" (func $2))
  (export "f32.plain_nan" (func $3))
  (export "f32.informally_known_as_plain_snan" (func $4))
  (export "f32.all_ones_nan" (func $5))

kripken

function truncate(x) {
  x = i64(x); // declare param as i64
  return i64_trunc(x) | 0; // truncate to low 32 bits
}

kripken

int doubler(int x) {
  return 2 * x;
}

kripken

Box2D Code Size Measurements

step	gzipped size (K)
asm.js	55.3
+ asm2wasm	50.0
+ wasm opts	45.2
- js opts	44.1
wasm-only	43.1

kripken

Corrections64 Speed Measurements

step	time (seconds)
asm.js	28.46
+ asm2wasm	13.21
+ wasm opts	12.99
- js opts	12.88
wasm-only	6.88

kripken

Box2D Speed Measurements

step	time (seconds)
asm.js	5.97
+ asm2wasm	5.66
+ wasm opts	5.28
- js opts	5.24
wasm-only	5.24

kripken

In file included from /usr/include/c++/5/bits/char_traits.h:39:0,
                 from /usr/include/c++/5/ios:40,
                 from /usr/include/c++/5/istream:38,
                 from /home/alon/Dev/binaryen/src/wasm-binary.h:25,
                 from /home/alon/Dev/binaryen/src/wasm/wasm-binary.cpp:17:
/usr/include/c++/5/bits/stl_algobase.h: In instantiation of ‘_BI2 std::__copy_move_backward_a(_BI1, _BI1, _BI2) [with bool _IsMove = false; _BI1 = wasm::Expression**; _BI2 = ArenaVector<wasm::Expression*>::Iterator]’:
/usr/include/c++/5/bits/stl_algobase.h:614:5:   required from ‘_BI2 std::__copy_move_backward_a2(_BI1, _BI1, _BI2) [with bool _IsMove = false; _BI1 = __gnu_cxx::__normal_iterator<wasm::Expression**, std::vector<wasm::Expression*> >; _BI2 = ArenaVector<wasm::Expression*>::Iterator]’
/usr/include/c++/5/bits/stl_algobase.h:649:8:   required from ‘_BI2 std::copy_backward(_BI1, _BI1, _BI2) [with _BI1 = __gnu_cxx::__normal_iterator<wasm::Expression**, std::vector<wasm::Expression*> >; _BI2 = Aren

kripken

#include <stdlib.h>

template <typename SubType>
struct ArenaVectorBase {
  size_t allocatedElements = 0;

  void allocate(size_t size) {
    abort(); // must be implemented in children
  }
};

kripken

function _arrayToHeap(typedArray){
  var numBytes = typedArray.length * typedArray.BYTES_PER_ELEMENT;
  var ptr = Module._malloc(numBytes);
  var heapBytes = Module.HEAPU8.subarray(ptr, ptr + numBytes);
  heapBytes.set(typedArray);
  return heapBytes;
}