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8248219: aarch64: missing memory barrier in fast_storefield and fast_accessfield

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Reviewed-by: aph
This commit is contained in:
Yaofei Song 2020-06-28 16:47:25 +08:00 • committed by Fei Yang
parent 1b3a127d06
commit c7ecaa4a1d
1 changed files with 7 additions and 0 deletions
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7
src/hotspot/cpu/aarch64/templateTable_aarch64.cpp
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@ -2975,6 +2975,9 @@ void TemplateTable::fast_storefield(TosState state)
// access constant pool cache
__ get_cache_and_index_at_bcp(r2, r1, 1);
// Must prevent reordering of the following cp cache loads with bytecode load
__ membar(MacroAssembler::LoadLoad);
// test for volatile with r3
__ ldrw(r3, Address(r2, in_bytes(base +
ConstantPoolCacheEntry::flags_offset())));
@ -3067,6 +3070,10 @@ void TemplateTable::fast_accessfield(TosState state)
// access constant pool cache
__ get_cache_and_index_at_bcp(r2, r1, 1);
// Must prevent reordering of the following cp cache loads with bytecode load
__ membar(MacroAssembler::LoadLoad);
__ ldr(r1, Address(r2, in_bytes(ConstantPoolCache::base_offset() +
ConstantPoolCacheEntry::f2_offset())));
__ ldrw(r3, Address(r2, in_bytes(ConstantPoolCache::base_offset() +