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6985015: C1 needs to support compressed oops

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This change implements compressed oops for C1 for x64 and sparc. The changes are mostly on the codegen level, with a few exceptions when we do access things outside of the heap that are uncompressed from the IR. Compressed oops are now also enabled with tiered.

Reviewed-by: twisti, kvn, never, phh
This commit is contained in:
Igor Veresov 2010-11-30 23:23:40 -08:00
parent 8006fe8f75
commit d59d7ffc4a
30 changed files with 493 additions and 429 deletions
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5
hotspot/src/share/vm/c1/c1_Runtime1.cpp
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@ -1174,7 +1174,7 @@ JRT_LEAF(int, Runtime1::arraycopy(oopDesc* src, int src_pos, oopDesc* dst, int d
memmove(dst_addr, src_addr, length << l2es);
return ac_ok;
} else if (src->is_objArray() && dst->is_objArray()) {
if (UseCompressedOops) { // will need for tiered
if (UseCompressedOops) {
narrowOop *src_addr = objArrayOop(src)->obj_at_addr<narrowOop>(src_pos);
narrowOop *dst_addr = objArrayOop(dst)->obj_at_addr<narrowOop>(dst_pos);
return obj_arraycopy_work(src, src_addr, dst, dst_addr, length);
@ -1210,10 +1210,11 @@ JRT_LEAF(void, Runtime1::oop_arraycopy(HeapWord* src, HeapWord* dst, int num))
assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well.");
if (UseCompressedOops) {
bs->write_ref_array_pre((narrowOop*)dst, num);
Copy::conjoint_oops_atomic((narrowOop*) src, (narrowOop*) dst, num);
} else {
bs->write_ref_array_pre((oop*)dst, num);
Copy::conjoint_oops_atomic((oop*) src, (oop*) dst, num);
}
Copy::conjoint_oops_atomic((oop*) src, (oop*) dst, num);
bs->write_ref_array(dst, num);
JRT_END