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implement optimization: (x = 2 * x) ---> (x *= 2)

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kzc
2016-08-26 18:47:25 -04:00
parent 1a78bbcd23
commit 0bd8053524
3 changed files with 258 additions and 10 deletions
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4
test/compress/asm.js
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@@ -90,13 +90,13 @@ asm_mixed: {
}
function no_asm_GeometricMean(stdlib, foreign, buffer) {
function logSum(start, end) {
start = 0 | start, end = 0 | end;
start |= 0, end |= 0;
var sum = 0, p = 0, q = 0;
for (p = start << 3, q = end << 3; (0 | p) < (0 | q); p = p + 8 | 0) sum += +log(values[p >> 3]);
return +sum;
}
function geometricMean(start, end) {
return start = 0 | start, end = 0 | end, +exp(+logSum(start, end) / +(end - start | 0));
return start |= 0, end |= 0, +exp(+logSum(start, end) / +(end - start | 0));
}
var exp = stdlib.Math.exp, log = stdlib.Math.log, values = new stdlib.Float64Array(buffer);
return { geometricMean: geometricMean };