js/src/jit-test/tests/jaeger/regalloc-live.js

Thu, 15 Jan 2015 21:03:48 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 15 Jan 2015 21:03:48 +0100
branch
TOR_BUG_9701
changeset 11
deefc01c0e14
permissions
-rw-r--r--

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

michael@0 1
michael@0 2 // test local/arg liveness analysis in presence of many locals
michael@0 3
michael@0 4 function foo(a, b, c) {
michael@0 5 var x = 0, y = 0, z = 0;
michael@0 6 if (a < b) {
michael@0 7 x = a + 0;
michael@0 8 y = b + 0;
michael@0 9 z = c + 0;
michael@0 10 } else {
michael@0 11 x = a;
michael@0 12 y = b;
michael@0 13 z = c;
michael@0 14 }
michael@0 15 return x + y + z;
michael@0 16 }
michael@0 17 assertEq(foo(1, 2, 3), 6);
michael@0 18
michael@0 19 // restore liveness correctly before switch statements
michael@0 20
michael@0 21 function foo(a, b, c) {
michael@0 22 var x = 0, y = 0, z = 0;
michael@0 23 if (a < b) {
michael@0 24 x = a + 0;
michael@0 25 y = b + 0;
michael@0 26 z = c + 0;
michael@0 27 } else {
michael@0 28 switch (c) {
michael@0 29 case 1:
michael@0 30 case 2:
michael@0 31 case 3:
michael@0 32 case 4:
michael@0 33 case 5: return 0;
michael@0 34 }
michael@0 35 x = 0;
michael@0 36 y = 0;
michael@0 37 z = 0;
michael@0 38 }
michael@0 39 return x + y + z;
michael@0 40 }
michael@0 41 assertEq(foo(1, 2, 3), 6);

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