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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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8
hotspot/src/share/vm/runtime/frame.cpp
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@ -1153,9 +1153,8 @@ oop* frame::oopmapreg_to_location(VMReg reg, const RegisterMap* reg_map) const {
// If it is passed in a register, it got spilled in the stub frame.
return (oop *)reg_map->location(reg);
} else {
int sp_offset_in_stack_slots = reg->reg2stack();
int sp_offset = sp_offset_in_stack_slots >> (LogBytesPerWord - LogBytesPerInt);
return (oop *)&unextended_sp()[sp_offset];
int sp_offset_in_bytes = reg->reg2stack() * VMRegImpl::stack_slot_size;
return (oop*)(((address)unextended_sp()) + sp_offset_in_bytes);
}
}
@ -1331,8 +1330,7 @@ void frame::zap_dead_compiled_locals(JavaThread* thread, const RegisterMap* reg_
ResourceMark rm(thread);
assert(_cb != NULL, "sanity check");
if (_cb->oop_maps() != NULL) {
OopMapSet::all_do(this, reg_map, &_check_oop, check_derived_oop,
&_check_value, &_zap_dead);
OopMapSet::all_do(this, reg_map, &_check_oop, check_derived_oop, &_check_value);
}
}