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Optimizes functions to not create arrays

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This commit is contained in:
Yury Delendik 2014-08-04 11:12:51 -05:00
parent cb81bd6be6
commit f750e35224
4 changed files with 92 additions and 111 deletions
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28
test/unit/function_spec.js
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@ -425,10 +425,13 @@ describe('function', function() {
} else {
expect(compiledCode).not.toBeNull();
/*jshint -W054 */
var fn = new Function('args', compiledCode);
var fn = new Function('src', 'srcOffset', 'dest', 'destOffset',
compiledCode);
for (var i = 0; i < samples.length; i++) {
var out = fn(samples[i].input);
expect(out).toMatchArray(samples[i].output);
var out = new Float32Array(samples[i].output.length);
fn(samples[i].input, 0, out, 0);
expect(Array.prototype.slice.call(out, 0)).
toMatchArray(samples[i].output);
}
}
}
@ -475,11 +478,11 @@ describe('function', function() {
check(['mul'], [0, 1], [0, 1], null);
});
it('check compiled max', function() {
check(['dup', 0.6, 'gt', 7, 'jz', 'pop', 0.6], [0, 1], [0, 1],
check(['dup', 0.75, 'gt', 7, 'jz', 'pop', 0.75], [0, 1], [0, 1],
[{input: [0.5], output: [0.5]}]);
check(['dup', 0.6, 'gt', 7, 'jz', 'pop', 0.6], [0, 1], [0, 1],
[{input: [1], output: [0.6]}]);
check(['dup', 0.6, 'gt', 5, 'jz', 'pop', 0.6], [0, 1], [0, 1], null);
check(['dup', 0.75, 'gt', 7, 'jz', 'pop', 0.75], [0, 1], [0, 1],
[{input: [1], output: [0.75]}]);
check(['dup', 0.75, 'gt', 5, 'jz', 'pop', 0.75], [0, 1], [0, 1], null);
});
it('check pop/roll/index', function() {
check([1, 'pop'], [0, 1], [0, 1], [{input: [0.5], output: [0.5]}]);
@ -496,24 +499,23 @@ describe('function', function() {
it('check input boundaries', function () {
check([], [0, 0.5], [0, 1], [{input: [1], output: [0.5]}]);
check([], [0.5, 1], [0, 1], [{input: [0], output: [0.5]}]);
check(['dup'], [0.5, 0.6], [0, 1, 0, 1],
check(['dup'], [0.5, 0.75], [0, 1, 0, 1],
[{input: [0], output: [0.5, 0.5]}]);
check([], [100, 1001], [0, 10000], [{input: [1000], output: [1000]}]);
});
it('check output boundaries', function () {
check([], [0, 1], [0, 0.5], [{input: [1], output: [0.5]}]);
check([], [0, 1], [0.5, 1], [{input: [0], output: [0.5]}]);
check(['dup'], [0, 1], [0.5, 1, 0.6, 1],
[{input: [0], output: [0.5, 0.6]}]);
check(['dup'], [0, 1], [0.5, 1, 0.75, 1],
[{input: [0], output: [0.5, 0.75]}]);
check([], [0, 10000], [100, 1001], [{input: [1000], output: [1000]}]);
});
it('compile optimized', function () {
var compiler = new PostScriptCompiler();
var code = [0, 'add', 1, 1, 3, -1, 'roll', 'sub', 'sub', 1, 'mul'];
var compiledCode = compiler.compile(code, [0, 1], [0, 1]);
expect(compiledCode).toEqual('return [\n' +
' Math.max(0, Math.min(1, args[0]))\n' +
'];');
expect(compiledCode).toEqual(
'dest[destOffset + 0] = Math.max(0, Math.min(1, src[srcOffset + 0]));');
});
});