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8134468: Lucene test failures with 32 bit JDK 9b78, Server compiler

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Test that checks whether an array load falls into the range of an arraycopy is incorrect on 32bits

Reviewed-by: iveresov, kvn
This commit is contained in:
Roland Westrelin 2015-09-02 10:00:27 +02:00
parent ef62a6daab
commit 7ef7c96fde
2 changed files with 52 additions and 4 deletions
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8
hotspot/src/share/vm/opto/arraycopynode.cpp
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@ -681,10 +681,10 @@ bool ArrayCopyNode::modifies(intptr_t offset_lo, intptr_t offset_hi, PhaseTransf
uint header = arrayOopDesc::base_offset_in_bytes(ary_elem);
uint elemsize = type2aelembytes(ary_elem);
intptr_t dest_pos_plus_len_lo = (((intptr_t)dest_pos_t->_lo) + len_t->_lo) * elemsize + header;
intptr_t dest_pos_plus_len_hi = (((intptr_t)dest_pos_t->_hi) + len_t->_hi) * elemsize + header;
intptr_t dest_pos_lo = ((intptr_t)dest_pos_t->_lo) * elemsize + header;
intptr_t dest_pos_hi = ((intptr_t)dest_pos_t->_hi) * elemsize + header;
jlong dest_pos_plus_len_lo = (((jlong)dest_pos_t->_lo) + len_t->_lo) * elemsize + header;
jlong dest_pos_plus_len_hi = (((jlong)dest_pos_t->_hi) + len_t->_hi) * elemsize + header;
jlong dest_pos_lo = ((jlong)dest_pos_t->_lo) * elemsize + header;
jlong dest_pos_hi = ((jlong)dest_pos_t->_hi) * elemsize + header;
if (must_modify) {
if (offset_lo >= dest_pos_hi && offset_hi < dest_pos_plus_len_lo) {