--- a/hotspot/src/share/vm/opto/library_call.cpp Wed May 20 17:06:44 2015 +0200
+++ b/hotspot/src/share/vm/opto/library_call.cpp Thu May 21 13:54:07 2015 +0200
@@ -2631,7 +2631,9 @@
if (!is_store) {
MemNode::MemOrd mo = is_volatile ? MemNode::acquire : MemNode::unordered;
- Node* p = make_load(control(), adr, value_type, type, adr_type, mo, is_volatile);
+ // To be valid, unsafe loads may depend on other conditions than
+ // the one that guards them: pin the Load node
+ Node* p = make_load(control(), adr, value_type, type, adr_type, mo, LoadNode::Pinned, is_volatile);
// load value
switch (type) {
case T_BOOLEAN:
@@ -5488,7 +5490,7 @@
}
// Build the load.
MemNode::MemOrd mo = is_vol ? MemNode::acquire : MemNode::unordered;
- Node* loadedField = make_load(NULL, adr, type, bt, adr_type, mo, is_vol);
+ Node* loadedField = make_load(NULL, adr, type, bt, adr_type, mo, LoadNode::DependsOnlyOnTest, is_vol);
// If reference is volatile, prevent following memory ops from
// floating up past the volatile read. Also prevents commoning
// another volatile read.