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Side by Side Diff: src/harmony-array.js

Issue 1390023003: Use simple/fast macro version of MinMax in JS (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: avoid debug directory Created 5 years, 2 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 (function(global, utils) { 5 (function(global, utils) {
6 6
7 'use strict'; 7 'use strict';
8 8
9 %CheckIsBootstrapping(); 9 %CheckIsBootstrapping();
10 10
11 // ------------------------------------------------------------------- 11 // -------------------------------------------------------------------
12 // Imports 12 // Imports
13 13
14 var GetIterator; 14 var GetIterator;
15 var GetMethod; 15 var GetMethod;
16 var GlobalArray = global.Array; 16 var GlobalArray = global.Array;
17 var iteratorSymbol = utils.ImportNow("iterator_symbol"); 17 var iteratorSymbol = utils.ImportNow("iterator_symbol");
18 var MathMax;
19 var MathMin;
20 var ObjectIsFrozen; 18 var ObjectIsFrozen;
21 var ObjectDefineProperty; 19 var ObjectDefineProperty;
22 20
23 utils.Import(function(from) { 21 utils.Import(function(from) {
24 GetIterator = from.GetIterator; 22 GetIterator = from.GetIterator;
25 GetMethod = from.GetMethod; 23 GetMethod = from.GetMethod;
26 MathMax = from.MathMax;
27 MathMin = from.MathMin;
28 ObjectIsFrozen = from.ObjectIsFrozen; 24 ObjectIsFrozen = from.ObjectIsFrozen;
29 ObjectDefineProperty = from.ObjectDefineProperty; 25 ObjectDefineProperty = from.ObjectDefineProperty;
30 }); 26 });
31 27
32 // ------------------------------------------------------------------- 28 // -------------------------------------------------------------------
33 29
34 function InnerArrayCopyWithin(target, start, end, array, length) { 30 function InnerArrayCopyWithin(target, start, end, array, length) {
35 target = TO_INTEGER(target); 31 target = TO_INTEGER(target);
36 var to; 32 var to;
37 if (target < 0) { 33 if (target < 0) {
38 to = MathMax(length + target, 0); 34 to = MAX_SIMPLE(length + target, 0);
39 } else { 35 } else {
40 to = MathMin(target, length); 36 to = MIN_SIMPLE(target, length);
41 } 37 }
42 38
43 start = TO_INTEGER(start); 39 start = TO_INTEGER(start);
44 var from; 40 var from;
45 if (start < 0) { 41 if (start < 0) {
46 from = MathMax(length + start, 0); 42 from = MAX_SIMPLE(length + start, 0);
47 } else { 43 } else {
48 from = MathMin(start, length); 44 from = MIN_SIMPLE(start, length);
49 } 45 }
50 46
51 end = IS_UNDEFINED(end) ? length : TO_INTEGER(end); 47 end = IS_UNDEFINED(end) ? length : TO_INTEGER(end);
52 var final; 48 var final;
53 if (end < 0) { 49 if (end < 0) {
54 final = MathMax(length + end, 0); 50 final = MAX_SIMPLE(length + end, 0);
55 } else { 51 } else {
56 final = MathMin(end, length); 52 final = MIN_SIMPLE(end, length);
57 } 53 }
58 54
59 var count = MathMin(final - from, length - to); 55 var count = MIN_SIMPLE(final - from, length - to);
60 var direction = 1; 56 var direction = 1;
61 if (from < to && to < (from + count)) { 57 if (from < to && to < (from + count)) {
62 direction = -1; 58 direction = -1;
63 from = from + count - 1; 59 from = from + count - 1;
64 to = to + count - 1; 60 to = to + count - 1;
65 } 61 }
66 62
67 while (count > 0) { 63 while (count > 0) {
68 if (from in array) { 64 if (from in array) {
69 array[to] = array[from]; 65 array[to] = array[from];
(...skipping 219 matching lines...) Expand 10 before | Expand all | Expand 10 after
289 285
290 utils.Export(function(to) { 286 utils.Export(function(to) {
291 to.ArrayFrom = ArrayFrom; 287 to.ArrayFrom = ArrayFrom;
292 to.InnerArrayCopyWithin = InnerArrayCopyWithin; 288 to.InnerArrayCopyWithin = InnerArrayCopyWithin;
293 to.InnerArrayFill = InnerArrayFill; 289 to.InnerArrayFill = InnerArrayFill;
294 to.InnerArrayFind = InnerArrayFind; 290 to.InnerArrayFind = InnerArrayFind;
295 to.InnerArrayFindIndex = InnerArrayFindIndex; 291 to.InnerArrayFindIndex = InnerArrayFindIndex;
296 }); 292 });
297 293
298 }) 294 })
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