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Avoid calling js_ComputeThis when we don't have to from js_Invoke. bug 417947, r+a=brendan

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mrbkap@gmail.com 2008-02-18 19:34:02 -08:00
parent 3a8966f57d
commit f1ecb4b0a4
1 changed files with 6 additions and 1 deletions
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7
js/src/jsinterp.c
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@ -1260,8 +1260,13 @@ have_fun:
* We must call js_ComputeThis in case we are not called from the
* interpreter, where a prior bytecode has computed an appropriate
* |this| already.
*
* But we only need to eagerly compute this only for slow native
* functions. Fast natives must use JS_THIS and any scripted functions
* will go through the appropriate this-computing bytecode.
*/
if (!js_ComputeThis(cx, JS_FALSE, vp + 2)) {
if (native && fun && !(fun->flags & JSFUN_FAST_NATIVE) &&
!js_ComputeThis(cx, JS_FALSE, vp + 2)) {
ok = JS_FALSE;
goto out2;
}