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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes

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Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv

Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
This commit is contained in:
Coleen Phillimore 2008-04-13 17:43:42 -04:00
parent 680ecf1611
commit 4a831d45f0
273 changed files with 6585 additions and 2993 deletions
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7
hotspot/src/share/vm/opto/machnode.cpp
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@ -263,6 +263,13 @@ const Node* MachNode::get_base_and_disp(intptr_t &offset, const TypePtr* &adr_ty
// See if it adds up to a base + offset.
if (index != NULL) {
if (!index->is_Con()) {
const TypeNarrowOop* narrowoop = index->bottom_type()->isa_narrowoop();
if (narrowoop != NULL) {
// Memory references through narrow oops have a
// funny base so grab the type from the index.
adr_type = narrowoop->make_oopptr();
return NULL;
}
disp = Type::OffsetBot;
} else if (disp != Type::OffsetBot) {
const TypeX* ti = index->bottom_type()->isa_intptr_t();