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8202377: Modularize C2 GC barriers

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Reviewed-by: neliasso, roland
This commit is contained in:
Erik Österlund 2018-05-18 14:51:06 +02:00
parent 2aa9d028c7
commit 53ec88908c
31 changed files with 2648 additions and 1832 deletions
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6
src/hotspot/share/opto/macroArrayCopy.cpp
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@ -550,9 +550,9 @@ Node* PhaseMacroExpand::generate_arraycopy(ArrayCopyNode *ac, AllocateArrayNode*
}
// At this point we know we do not need type checks on oop stores.
// Let's see if we need card marks:
if (alloc != NULL && GraphKit::use_ReduceInitialCardMarks()) {
// If we do not need card marks, copy using the jint or jlong stub.
BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
if (alloc != NULL && !bs->array_copy_requires_gc_barriers(copy_type)) {
// If we do not need gc barriers, copy using the jint or jlong stub.
copy_type = LP64_ONLY(UseCompressedOops ? T_INT : T_LONG) NOT_LP64(T_INT);
assert(type2aelembytes(basic_elem_type) == type2aelembytes(copy_type),
"sizes agree");