archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-23 20:44:41 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8036851: volatile double accesses are not explicitly atomic in C2

Browse source 
The C2 structure is adapted to distinguish between volatile and non-volatile double accesses.

Reviewed-by: twisti, kvn
This commit is contained in:
Tobias Hartmann 2014-05-06 09:17:57 +02:00 • committed by Albert Noll
parent ded0d16e25
commit 85296fec28
3 changed files with 54 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

4
hotspot/src/share/vm/opto/graphKit.cpp
View file

@ -1509,6 +1509,8 @@ Node* GraphKit::make_load(Node* ctl, Node* adr, const Type* t, BasicType bt,
Node* ld;
if (require_atomic_access && bt == T_LONG) {
ld = LoadLNode::make_atomic(C, ctl, mem, adr, adr_type, t, mo);
} else if (require_atomic_access && bt == T_DOUBLE) {
ld = LoadDNode::make_atomic(C, ctl, mem, adr, adr_type, t, mo);
} else {
ld = LoadNode::make(_gvn, ctl, mem, adr, adr_type, t, bt, mo);
}
@ -1531,6 +1533,8 @@ Node* GraphKit::store_to_memory(Node* ctl, Node* adr, Node *val, BasicType bt,
Node* st;
if (require_atomic_access && bt == T_LONG) {
st = StoreLNode::make_atomic(C, ctl, mem, adr, adr_type, val, mo);
} else if (require_atomic_access && bt == T_DOUBLE) {
st = StoreDNode::make_atomic(C, ctl, mem, adr, adr_type, val, mo);
} else {
st = StoreNode::make(_gvn, ctl, mem, adr, adr_type, val, bt, mo);
}