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8140390: Char stores/loads accessing byte arrays must be marked as unmatched

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Mark unmatched char stores/loads emitted by CompactStrings.

Reviewed-by: roland, vlivanov, jrose
This commit is contained in:
Tobias Hartmann 2015-11-20 10:09:42 +01:00
parent 2ae7dcf853
commit ea052022fa
4 changed files with 11 additions and 9 deletions
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3
hotspot/src/share/vm/opto/graphKit.cpp
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@ -4387,7 +4387,8 @@ void GraphKit::inflate_string_slow(Node* src, Node* dst, Node* start, Node* coun
set_memory(mem, TypeAryPtr::BYTES);
Node* ch = load_array_element(control(), src, i_byte, TypeAryPtr::BYTES);
Node* st = store_to_memory(control(), array_element_address(dst, i_char, T_BYTE),
AndI(ch, intcon(0xff)), T_CHAR, TypeAryPtr::BYTES, MemNode::unordered);
AndI(ch, intcon(0xff)), T_CHAR, TypeAryPtr::BYTES, MemNode::unordered,
false, false, true /* mismatched */);
IfNode* iff = create_and_map_if(head, Bool(CmpI(i_byte, count), BoolTest::lt), PROB_FAIR, COUNT_UNKNOWN);
head->init_req(2, IfTrue(iff));