OpenJDK / valhalla / valhalla
changeset 56369:46579c68f7f4
8227083: ZGC: C2: Generates on_weak barrier for WeakCompareAndSwap
Reviewed-by: neliasso, eosterlund
| author | stefank |
|---|---|
| date | Tue, 02 Jul 2019 12:24:26 +0200 |
| parents | b9171be3cf2a |
| children | 9a5e9537fe1a |
| files | src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp |
| diffstat | 1 files changed, 1 insertions(+), 3 deletions(-) [+] |
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--- a/src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp Tue Jul 02 12:10:18 2019 +0200 +++ b/src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp Tue Jul 02 12:24:26 2019 +0200 @@ -1234,7 +1234,6 @@ Compile *C = phase->C; PhaseIterGVN &igvn = phase->igvn(); LoadStoreNode* zclone = NULL; - bool is_weak = false; Node *in_ctrl = old_node->in(MemNode::Control); Node *in_mem = old_node->in(MemNode::Memory); @@ -1254,7 +1253,6 @@ if (can_simplify_cas(old_node)) { break; } - is_weak = true; zclone = new ZWeakCompareAndSwapPNode(in_ctrl, in_mem, in_adr, in_val, old_node->in(LoadStoreConditionalNode::ExpectedIn), ((CompareAndSwapNode*)old_node)->order()); adr_type = TypePtr::BOTTOM; @@ -1285,7 +1283,7 @@ igvn.register_new_node_with_optimizer(load); igvn.replace_node(old_node, zclone); - Node *barrier = new LoadBarrierNode(C, NULL, in_mem, load, in_adr, is_weak); + Node *barrier = new LoadBarrierNode(C, NULL, in_mem, load, in_adr, false /* weak */); Node *barrier_val = new ProjNode(barrier, LoadBarrierNode::Oop); Node *barrier_ctrl = new ProjNode(barrier, LoadBarrierNode::Control);