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8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering

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Add a field to C2 LoadNode and StoreNode classes which indicates whether the load/store should do an acquire/release on platforms which support it.

Reviewed-by: kvn
This commit is contained in:
Goetz Lindenmaier 2013-11-15 11:05:32 -08:00
parent d8b9e9f681
commit 13b13f5259
17 changed files with 351 additions and 255 deletions
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20
hotspot/src/share/vm/opto/macro.cpp
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@ -1084,7 +1084,7 @@ void PhaseMacroExpand::set_eden_pointers(Node* &eden_top_adr, Node* &eden_end_ad
Node* PhaseMacroExpand::make_load(Node* ctl, Node* mem, Node* base, int offset, const Type* value_type, BasicType bt) {
Node* adr = basic_plus_adr(base, offset);
const TypePtr* adr_type = adr->bottom_type()->is_ptr();
Node* value = LoadNode::make(_igvn, ctl, mem, adr, adr_type, value_type, bt);
Node* value = LoadNode::make(_igvn, ctl, mem, adr, adr_type, value_type, bt, MemNode::unordered);
transform_later(value);
return value;
}
@ -1092,7 +1092,7 @@ Node* PhaseMacroExpand::make_load(Node* ctl, Node* mem, Node* base, int offset,
Node* PhaseMacroExpand::make_store(Node* ctl, Node* mem, Node* base, int offset, Node* value, BasicType bt) {
Node* adr = basic_plus_adr(base, offset);
mem = StoreNode::make(_igvn, ctl, mem, adr, NULL, value, bt);
mem = StoreNode::make(_igvn, ctl, mem, adr, NULL, value, bt, MemNode::unordered);
transform_later(mem);
return mem;
}
@ -1272,8 +1272,8 @@ void PhaseMacroExpand::expand_allocate_common(
// Load(-locked) the heap top.
// See note above concerning the control input when using a TLAB
Node *old_eden_top = UseTLAB
? new (C) LoadPNode (ctrl, contended_phi_rawmem, eden_top_adr, TypeRawPtr::BOTTOM, TypeRawPtr::BOTTOM)
: new (C) LoadPLockedNode(contended_region, contended_phi_rawmem, eden_top_adr);
? new (C) LoadPNode (ctrl, contended_phi_rawmem, eden_top_adr, TypeRawPtr::BOTTOM, TypeRawPtr::BOTTOM, MemNode::unordered)
: new (C) LoadPLockedNode(contended_region, contended_phi_rawmem, eden_top_adr, MemNode::acquire);
transform_later(old_eden_top);
// Add to heap top to get a new heap top
@ -1320,7 +1320,7 @@ void PhaseMacroExpand::expand_allocate_common(
if (UseTLAB) {
Node* store_eden_top =
new (C) StorePNode(needgc_false, contended_phi_rawmem, eden_top_adr,
TypeRawPtr::BOTTOM, new_eden_top);
TypeRawPtr::BOTTOM, new_eden_top, MemNode::unordered);
transform_later(store_eden_top);
fast_oop_ctrl = needgc_false; // No contention, so this is the fast path
fast_oop_rawmem = store_eden_top;
@ -1700,9 +1700,10 @@ Node* PhaseMacroExpand::prefetch_allocation(Node* i_o, Node*& needgc_false,
_igvn.MakeConX(in_bytes(JavaThread::tlab_pf_top_offset())) );
transform_later(eden_pf_adr);
Node *old_pf_wm = new (C) LoadPNode( needgc_false,
Node *old_pf_wm = new (C) LoadPNode(needgc_false,
contended_phi_rawmem, eden_pf_adr,
TypeRawPtr::BOTTOM, TypeRawPtr::BOTTOM );
TypeRawPtr::BOTTOM, TypeRawPtr::BOTTOM,
MemNode::unordered);
transform_later(old_pf_wm);
// check against new_eden_top
@ -1726,9 +1727,10 @@ Node* PhaseMacroExpand::prefetch_allocation(Node* i_o, Node*& needgc_false,
transform_later(new_pf_wmt );
new_pf_wmt->set_req(0, need_pf_true);
Node *store_new_wmt = new (C) StorePNode( need_pf_true,
Node *store_new_wmt = new (C) StorePNode(need_pf_true,
contended_phi_rawmem, eden_pf_adr,
TypeRawPtr::BOTTOM, new_pf_wmt );
TypeRawPtr::BOTTOM, new_pf_wmt,
MemNode::unordered);
transform_later(store_new_wmt);
// adding prefetches