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6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops

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Generate addresses and implicit null checks with narrow oops to avoid decoding.

Reviewed-by: jrose, never
This commit is contained in:
Vladimir Kozlov 2008-05-29 12:04:14 -07:00
parent 646ceb4a45
commit a1f50998ae
20 changed files with 138 additions and 81 deletions
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10
hotspot/src/share/vm/opto/memnode.cpp
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@ -1625,14 +1625,10 @@ Node *LoadKlassNode::make( PhaseGVN& gvn, Node *mem, Node *adr, const TypePtr* a
const TypeNarrowOop* narrowtype = tk->is_oopptr()->make_narrowoop();
Node* load_klass = gvn.transform(new (C, 3) LoadNKlassNode(ctl, mem, adr, at, narrowtype));
return DecodeNNode::decode(&gvn, load_klass);
} else
#endif
{
assert(!adr_type->is_ptr_to_narrowoop(), "should have got back a narrow oop");
return new (C, 3) LoadKlassNode(ctl, mem, adr, at, tk);
}
ShouldNotReachHere();
return (LoadKlassNode*)NULL;
#endif
assert(!adr_type->is_ptr_to_narrowoop(), "should have got back a narrow oop");
return new (C, 3) LoadKlassNode(ctl, mem, adr, at, tk);
}
//------------------------------Value------------------------------------------