Fix conversion to float32, typing issue, split apart asm-wasm tests.

test/mjsunit/wasm/asm-wasm-stdlib.js

+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --expose-wasm
+
+(function TestStdlibConstants() {
+  function Module(stdlib) {
+    "use asm";
+
+    var StdlibInfinity = stdlib.Infinity;
+    var StdlibNaN = stdlib.NaN;
+    var StdlibMathE = stdlib.Math.E;
+    var StdlibMathLN10 = stdlib.Math.LN10;
+    var StdlibMathLN2 = stdlib.Math.LN2;
+    var StdlibMathLOG2E = stdlib.Math.LOG2E;
+    var StdlibMathLOG10E = stdlib.Math.LOG10E;
+    var StdlibMathPI = stdlib.Math.PI;
+    var StdlibMathSQRT1_2 = stdlib.Math.SQRT1_2;
+    var StdlibMathSQRT2 = stdlib.Math.SQRT2;
+
+    function caller() {
+      if (StdlibInfinity != 1.0 / 0.0) return 0;
+      if (StdlibMathE != 2.718281828459045) return 0;
+      if (StdlibMathLN10 != 2.302585092994046) return 0;
+      if (StdlibMathLN2 != 0.6931471805599453) return 0;
+      if (StdlibMathLOG2E != 1.4426950408889634) return 0;
+      if (StdlibMathLOG10E != 0.4342944819032518) return 0;
+      if (StdlibMathPI != 3.141592653589793) return 0;
+      if (StdlibMathSQRT1_2 != 0.7071067811865476) return 0;
+      if (StdlibMathSQRT2 != 1.4142135623730951) return 0;
+      return 1;
+    }
+
+    function nanCheck() {
+      return +StdlibNaN;
+    }
+
+    return {caller:caller, nanCheck:nanCheck};
+  }
+
+  var m =Wasm.instantiateModuleFromAsm(Module.toString());
+  assertEquals(1, m.caller());
+  assertTrue(isNaN(m.nanCheck()));
+})();
+
+
+(function TestStdlibFunctionsInside() {
+  function Module(stdlib) {
+    "use asm";
+
+    var StdlibMathCeil = stdlib.Math.ceil;
+    var StdlibMathFloor = stdlib.Math.floor;
+    var StdlibMathSqrt = stdlib.Math.sqrt;
+    var StdlibMathAbs = stdlib.Math.abs;
+    var StdlibMathMin = stdlib.Math.min;
+    var StdlibMathMax = stdlib.Math.max;
+
+    var StdlibMathAcos = stdlib.Math.acos;
+    var StdlibMathAsin = stdlib.Math.asin;
+    var StdlibMathAtan = stdlib.Math.atan;
+    var StdlibMathCos = stdlib.Math.cos;
+    var StdlibMathSin = stdlib.Math.sin;
+    var StdlibMathTan = stdlib.Math.tan;
+    var StdlibMathExp = stdlib.Math.exp;
+    var StdlibMathLog = stdlib.Math.log;
+
+    var StdlibMathAtan2 = stdlib.Math.atan2;
+    var StdlibMathPow = stdlib.Math.pow;
+    var StdlibMathImul = stdlib.Math.imul;
+
+    var fround = stdlib.Math.fround;
+
+    function deltaEqual(x, y) {
+      x = +x;
+      y = +y;
+      var t = 0.0;
+      t = x - y;
+      if (t < 0.0) {
+        t = t * -1.0;
+      }
+      return (t < 1.0e-10) | 0;
+    }
+
+    function caller() {
+      if (!deltaEqual(StdlibMathSqrt(123.0), 11.090536506409418)) return 0;
+      if (StdlibMathSqrt(fround(256.0)) != fround(16.0)) return 0;
+      if (StdlibMathCeil(123.7) != 124.0) return 0;
+      if (StdlibMathCeil(fround(123.7)) != fround(124.0)) return 0;
+      if (StdlibMathFloor(123.7) != 123.0) return 0;
+      if (StdlibMathFloor(fround(123.7)) != fround(123.0)) return 0;
+      if (StdlibMathAbs(-123.0) != 123.0) return 0;
+      if (StdlibMathAbs(fround(-123.0)) != fround(123.0)) return 0;
+      if (StdlibMathMin(123.4, 1236.4) != 123.4) return 0;
+      if (StdlibMathMin(fround(123.4),
+            fround(1236.4)) != fround(123.4)) return 0;
+      if (StdlibMathMax(123.4, 1236.4) != 1236.4) return 0;
+      if (StdlibMathMax(fround(123.4), fround(1236.4))
+          != fround(1236.4)) return 0;
+
+      if (!deltaEqual(StdlibMathAcos(0.1), 1.4706289056333368)) return 0;
+      if (!deltaEqual(StdlibMathAsin(0.2), 0.2013579207903308)) return 0;
+      if (!deltaEqual(StdlibMathAtan(0.2), 0.19739555984988078)) return 0;
+      if (!deltaEqual(StdlibMathCos(0.2), 0.9800665778412416)) return 0;
+      if (!deltaEqual(StdlibMathSin(0.2), 0.19866933079506122)) return 0;
+      if (!deltaEqual(StdlibMathTan(0.2), 0.20271003550867250)) return 0;
+      if (!deltaEqual(StdlibMathExp(0.2), 1.2214027581601699)) return 0;
+      if (!deltaEqual(StdlibMathLog(0.2), -1.6094379124341003)) return 0;
+
+      if (StdlibMathImul(6, 7) != 42) return 0;
+      if (!deltaEqual(StdlibMathAtan2(6.0, 7.0), 0.7086262721276703)) return 0;
+      if (StdlibMathPow(6.0, 7.0) != 279936.0) return 0;
+
+      return 1;
+    }
+
+    return {caller:caller};
+  }
+
+  var m = Wasm.instantiateModuleFromAsm(Module.toString());
+  assertEquals(1, m.caller());
+})();
+
+
+(function TestStdlibFunctionOutside() {
+  function looseEqual(x, y, delta) {
+    if (delta === undefined) {
+      delta = 1.0e-13;
+    }
+    if (isNaN(x) && isNaN(y)) {
+      return true;
+    }
+    if (!isFinite(x) && !isFinite(y)) {
+      return true;
+    }
+    x = +x;
+    y = +y;
+    var t = 0.0;
+    t = x - y;
+    if (t < 0.0) {
+      t = t * -1.0;
+    }
+    return (t < delta) | 0;
+  }
+
+  function plainEqual(x, y) {
+    if (isNaN(x) && isNaN(y)) {
+      return true;
+    }
+    return x === y;
+  }
+
+  function Module(stdlib) {
+    "use asm";
+    var ceil = stdlib.Math.ceil;
+    var floor = stdlib.Math.floor;
+    var sqrt = stdlib.Math.sqrt;
+    var abs = stdlib.Math.abs;
+    var fround = stdlib.Math.fround;
+
+    var acos = stdlib.Math.acos;
+    var asin = stdlib.Math.asin;
+    var atan = stdlib.Math.atan;
+    var cos = stdlib.Math.cos;
+    var sin = stdlib.Math.sin;
+    var tan = stdlib.Math.tan;
+    var exp = stdlib.Math.exp;
+    var log = stdlib.Math.log;
+
+    var atan2 = stdlib.Math.atan2;
+    var pow = stdlib.Math.pow;
+    var imul = stdlib.Math.imul;
+    var min = stdlib.Math.min;
+    var max = stdlib.Math.max;
+
+    function ceil_f64(x) { x = +x; return +ceil(x); }
+    function ceil_f32(x) { x = fround(x); return fround(ceil(x)); }
+
+    function floor_f64(x) { x = +x; return +floor(x); }
+    function floor_f32(x) { x = fround(x); return fround(floor(x)); }
+
+    function sqrt_f64(x) { x = +x; return +sqrt(x); }
+    function sqrt_f32(x) { x = fround(x); return fround(sqrt(x)); }
+
+    function abs_f64(x) { x = +x; return +abs(x); }
+    function abs_f32(x) { x = fround(x); return fround(abs(x)); }
+    function abs_i32(x) { x = x | 0; return abs(x|0) | 0; }
+
+    function acos_f64(x) { x = +x; return +acos(x); }
+    function asin_f64(x) { x = +x; return +asin(x); }
+    function atan_f64(x) { x = +x; return +atan(x); }
+    function cos_f64(x) { x = +x; return +cos(x); }
+    function sin_f64(x) { x = +x; return +sin(x); }
+    function tan_f64(x) { x = +x; return +tan(x); }
+    function exp_f64(x) { x = +x; return +exp(x); }
+    function log_f64(x) { x = +x; return +log(x); }
+
+    function atan2_f64(x, y) { x = +x; y = +y; return +atan2(x, y); }
+    function pow_f64(x, y) { x = +x; y = +y; return +atan2(x, y); }
+
+    function imul_i32(x, y) { x = x | 0; y = y | 0; return imul(x, y) | 0; }
+    function imul_u32(x, y) {
+      x = x | 0; y = y | 0; return imul(x>>>0, y>>>0) | 0; }
+
+    function fround_i32(x) { x = x | 0; return fround(x|0) | 0; }
+    function fround_u32(x) { x = x | 0; return fround(x>>>0) | 0; }
+    function fround_f32(x) { x = fround(x); return fround(x); }
+    // TODO(bradnelson): Fix and enable.
+    //function fround_f64(x) { x = +x; return fround(x); }
+
+    function min_i32(x, y) { x = x | 0; y = y | 0; return min(x|0, y|0) | 0; }
+    // TODO(bradnelson): Fix and enable.
+    //function min_u32(x, y) {
+    //  x = x | 0; y = y | 0; return min(x>>>0, y>>>0) | 0; }
+    function min_f32(x, y) {
+      x = fround(x); y = fround(y); return fround(min(x, y)); }
+    function min_f64(x, y) { x = +x; y = +y; return +min(x, y); }
+
+    function max_i32(x, y) { x = x | 0; y = y | 0; return max(x|0, y|0) | 0; }
+    // TODO(bradnelson): Fix and enable.
+    //function max_u32(x, y) {
+    //  x = x | 0; y = y | 0; return max(x>>>0, y>>>0) | 0; }
+    function max_f32(x, y) {
+      x = fround(x); y = fround(y); return fround(max(x, y)); }
+    function max_f64(x, y) { x = +x; y = +y; return +max(x, y); }
+
+    return {
+      ceil_f64: ceil_f64,
+      ceil_f32: ceil_f32,
+      floor_f64: floor_f64,
+      floor_f32: floor_f32,
+      sqrt_f64: sqrt_f64,
+      sqrt_f32: sqrt_f32,
+      abs_f64: abs_f64,
+      abs_f32: abs_f32,
+      abs_i32: abs_i32,
+      acos_f64: acos_f64,
+      asin_f64: asin_f64,
+      atan_f64: atan_f64,
+      cos_f64: cos_f64,
+      sin_f64: sin_f64,
+      tan_f64: tan_f64,
+      exp_f64: exp_f64,
+      log_f64: log_f64,
+      imul_i32: imul_i32,
+      imul_u32: imul_u32,
+      fround_i32: fround_i32,
+      fround_u32: fround_u32,
+      fround_f32: fround_f32,
+      // TODO(bradnelson): Fix and enable.
+      // fround_f64: fround_f64,
+      min_i32: min_i32,
+      // TODO(bradnelson): Fix and enable.
+      // min_u32: min_u32,
+      min_f32: min_f32,
+      min_f64: min_f64,
+      max_i32: max_i32,
+      // TODO(bradnelson): Fix and enable.
+      // max_u32: max_u32,
+      max_f32: max_f32,
+      max_f64: max_f64,
+    };
+  }
+  var m = Wasm.instantiateModuleFromAsm(Module.toString());
+  var values = {
+    'i32': [
+      0, 1, -1, 123, 456, -123, -456,
+      0x40000000, 0x7FFFFFFF, -0x80000000,
+    ],
+    'u32': [
+      0, 1, 123, 456,
+      0x40000000, 0x7FFFFFFF, 0xFFFFFFFF, 0x80000000,
+    ],
+    'f32': [
+      0, -0, 1, -1, 0.9, -0.9, 1.414, 0x7F, -0x80, -0x8000, -0x80000000,

[titzer, 2016/03/16 09:44:05]

Not sure if it matters here but 0.9 is not exactly representable in floating
point. In these cases I usually pick a fractional number like 0.25, 0.125, etc.

[bradnelson, 2016/03/19 03:48:48]

Got these "edge case" values from the simd tests. Added the exact ones you
specify, but kept these, since js should canonically convert them.

I've made the comparisons with float strict except for a few like cos/sin/exp,
where fdlib has a different approximation than you get through other paths.

By the way the SIMD folks expressed the belief that math ops returning different
values based on optimization level is bad at some point. Though I don't believe
any verbiage to that effect got in the spec. JS is well... generous.

+      0x7FFF, 0x7FFFFFFF, Infinity, -Infinity, NaN,
+    ],
+    'f64': [
+      0, -0, 1, -1, 0.9, -0.9, 1.414, 0x7F, -0x80, -0x8000, -0x80000000,
+      0x7FFF, 0x7FFFFFFF, Infinity, -Infinity, NaN,
+    ],
+  };
+  var converts = {
+    'i32': function(x) { return x | 0; },

[titzer, 2016/03/16 09:44:05]

You can drop the single quotes from these property names.

[bradnelson, 2016/03/19 03:48:48]

Done.

+    'u32': function(x) { return x >>> 0; },
+    'f32': function(x) { return Math.fround(x); },
+    'f64': function(x) { return x; },
+  };
+  var two_args = {'atan2': true, 'pow': true, 'imul': true,
+                  'min': true, 'max': true};
+  var funcs = {
+    'ceil': ['f32', 'f64'],
+    'floor': ['f32', 'f64'],
+    'sqrt': ['f32', 'f64'],
+    'abs': ['i32', 'f32', 'f64'],
+    'acos': ['f64'],
+    'asin': ['f64'],
+    'atan': ['f64'],
+    'cos': ['f64'],
+    'sin': ['f64'],
+    'tan': ['f64'],
+    'exp': ['f64'],
+    'log': ['f64'],
+    'imul': ['i32', 'u32'],
+    // TODO(bradnelson): Fix and enable.
+    // 'fround': ['i32', 'u32', 'f32', 'f64'],
+    'fround': ['i32', 'u32', 'f32'],
+    // TODO(bradnelson): Fix and enable.
+    // 'min': ['i32', 'u32', 'f32', 'f64'],
+    'min': ['i32', 'f32', 'f64'],
+    // TODO(bradnelson): Fix and enable.
+    // 'max': ['i32', 'u32', 'f32', 'f64'],
+    'max': ['i32', 'f32', 'f64'],
+  };
+  var equals = {
+    'f64': looseEqual,
+    'f32': plainEqual,
+    'i32': plainEqual,
+  };
+  var per_func_equals = {
+    // exp not required to have a particular precision.
+    'exp_f64': function(x, y) { return looseEqual(x, y, 1e55); },
+  };
+  for (var func in funcs) {
+    var types = funcs[func];
+    for (var i = 0; i < types.length; i++) {
+      var type = types[i];
+      var interesting = values[type];
+      for (var j = 0; j < interesting.length; j++) {
+        for (var k = 0; k < interesting.length; k++) {
+          var val0 = interesting[j];
+          var val1 = interesting[k];
+          var input0 = converts[type](val0);
+          var input1 = converts[type](val1);
+          var name = func + '_' + type;
+          if (two_args[func]) {
+            var expected = converts[type](Math[func](input0, input1));
+            var actual = m[name](input0, input1);
+          } else {
+            var expected = converts[type](Math[func](input0, input1));
+            var actual = m[name](input0, input1);
+          }
+          var compare = per_func_equals[name];
+          if (compare === undefined) {
+            compare = equals[type];
+          }
+          if (!compare(expected, actual)) {
+            print(expected + ' !== ' + actual + ' for ' + name +
+                  ' with input ' + input0 + ' ' + input1);
+            assertTrue(false);
+          }
+        }
+      }
+    }
+  }
+})();