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Remove code to unlink trees to reduce the size of GuardRecord. Allow GuardRecords to share one common SideExit structure. The VM places both explicitly into the LIR (460538, r=danderson).

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This commit is contained in:
Andreas Gal
2008-10-21 17:50:32 -07:00
parent 2a6de072bc
commit 25e29ecdf1
13 changed files with 224 additions and 385 deletions
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11
js/src/jsbuiltins.cpp
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@@ -251,22 +251,23 @@ js_FastCallIteratorNext(JSContext* cx, JSObject* iterobj)
return v;
}
GuardRecord* FASTCALL
SideExit* FASTCALL
js_CallTree(InterpState* state, Fragment* f)
{
GuardRecord* lr;
union { NIns *code; GuardRecord* (FASTCALL *func)(InterpState*, Fragment*); } u;
u.code = f->code();
JS_ASSERT(u.code);
GuardRecord* rec;
#if defined(JS_NO_FASTCALL) && defined(NANOJIT_IA32)
SIMULATE_FASTCALL(lr, state, NULL, u.func);
SIMULATE_FASTCALL(rec, state, NULL, u.func);
#else
lr = u.func(state, NULL);
rec = u.func(state, NULL);
#endif
SideExit* lr = rec->exit;
if (lr->exit->exitType == NESTED_EXIT) {
if (lr->exitType == NESTED_EXIT) {
/* This only occurs once a tree call guard mismatches and we unwind the tree call stack.
We store the first (innermost) tree call guard in state and we will try to grow
the outer tree the failing call was in starting at that guard. */