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Bug 898047 - Fix Ion to set the Folded flag on arguments MIR when optimizing fun.apply(x, arguments). r=bhackett

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This commit is contained in:
Jan de Mooij 2013-07-29 11:16:12 +02:00
parent a2a2b91464
commit 5cabf6d4f9
2 changed files with 25 additions and 0 deletions
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2
js/src/ion/IonBuilder.cpp
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@ -4666,6 +4666,7 @@ IonBuilder::jsop_funapplyarguments(uint32_t argc)
// Vp
MPassArg *passVp = current->pop()->toPassArg();
passVp->getArgument()->setFoldedUnchecked();
passVp->replaceAllUsesWith(passVp->getArgument());
passVp->block()->discard(passVp);
@ -4705,6 +4706,7 @@ IonBuilder::jsop_funapplyarguments(uint32_t argc)
// Vp
MPassArg *passVp = current->pop()->toPassArg();
passVp->getArgument()->setFoldedUnchecked();
passVp->replaceAllUsesWith(passVp->getArgument());
passVp->block()->discard(passVp);

23
js/src/jit-test/tests/ion/bug898047.js Normal file
View File

@ -0,0 +1,23 @@
function g(aa) {
assertEq(aa, 123);
}
function f(x, yy) {
if (yy < 0) {
for (var j=0; j<100; j++) {}
}
var o = yy < 2000 ? o1 : o2;
o.fun.apply(22, arguments);
}
function test() {
o1 = {};
o1.fun = g;
o2 = {};
o2.x = 3;
o2.fun = g;
for (var i=0; i<3000; i++)
f(123, i);
}
test();