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8324125: Improve class initialization barrier in TemplateTable::_new for RISC-V

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Reviewed-by: fyang, rehn
This commit is contained in:
Gui Cao 2024-01-30 02:07:20 +00:00 committed by Fei Yang
parent b6d364ad88
commit a1d65eb6d8
1 changed files with 4 additions and 5 deletions
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9
src/hotspot/cpu/riscv/templateTable_riscv.cpp
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@ -3547,11 +3547,10 @@ void TemplateTable::_new() {
// get InstanceKlass
__ load_resolved_klass_at_offset(x14, x13, x14, t0);
// make sure klass is initialized & doesn't have finalizer
// make sure klass is fully initialized
__ lbu(t0, Address(x14, InstanceKlass::init_state_offset()));
__ sub(t1, t0, (u1)InstanceKlass::fully_initialized);
__ bnez(t1, slow_case);
// make sure klass is initialized
assert(VM_Version::supports_fast_class_init_checks(),
"Optimization requires support for fast class initialization checks");
__ clinit_barrier(x14, t0, nullptr /*L_fast_path*/, &slow_case);
// get instance_size in InstanceKlass (scaled to a count of bytes)
__ lwu(x13, Address(x14, Klass::layout_helper_offset()));