Index: chrome/test/data/dromaeo/tests/sunspider-bitops-3bit-bits-in-byte.html |
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--- chrome/test/data/dromaeo/tests/sunspider-bitops-3bit-bits-in-byte.html (revision 0) |
+++ chrome/test/data/dromaeo/tests/sunspider-bitops-3bit-bits-in-byte.html (revision 0) |
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+<html> |
+<head> |
+<script src="../htmlrunner.js"></script> |
+<script> |
+// Copyright (c) 2004 by Arthur Langereis (arthur_ext at domain xfinitegames, tld com |
+ |
+// 1 op = 6 ANDs, 3 SHRs, 3 SHLs, 4 assigns, 2 ADDs |
+// O(1) |
+function fast3bitlookup(b) { |
+var c, bi3b = 0xE994; // 0b1110 1001 1001 0100; // 3 2 2 1 2 1 1 0 |
+c = 3 & (bi3b >> ((b << 1) & 14)); |
+c += 3 & (bi3b >> ((b >> 2) & 14)); |
+c += 3 & (bi3b >> ((b >> 5) & 6)); |
+return c; |
+ |
+/* |
+lir4,0xE994; 9 instructions, no memory access, minimal register dependence, 6 shifts, 2 adds, 1 inline assign |
+rlwinmr5,r3,1,28,30 |
+rlwinmr6,r3,30,28,30 |
+rlwinmr7,r3,27,29,30 |
+rlwnmr8,r4,r5,30,31 |
+rlwnmr9,r4,r6,30,31 |
+rlwnmr10,r4,r7,30,31 |
+addr3,r8,r9 |
+addr3,r3,r10 |
+*/ |
+} |
+ |
+ |
+function TimeFunc(func) { |
+var x, y, t; |
+for(var x=0; x<250; x++) |
+for(var y=0; y<256; y++) func(y); |
+} |
+ |
+window.onload = function(){ startTest("sunspider-bitops-3bit-bits-in-byte", ''); |
+ |
+test("3bit bits in byte", function(){ |
+ TimeFunc(fast3bitlookup); |
+}); |
+ |
+endTest(); }; |
+</script> |
+</head> |
+<body></body> |
+</html> |