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8171392: Move Klass pointers outside of ConstantPool entries so ConstantPool can be read-only

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Added _resolved_klasses; moved _resolved_references to ConstantPoolCache, etc.

Reviewed-by: coleenp, lfoltan, simonis, aph
This commit is contained in:
Ioi Lam 2017-03-03 23:08:35 -08:00
parent 0c74ceb12d
commit c386cec7b1
32 changed files with 527 additions and 231 deletions
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13
hotspot/src/cpu/sparc/vm/templateTable_sparc.cpp
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@ -3241,9 +3241,7 @@ void TemplateTable::_new() {
__ br(Assembler::notEqual, false, Assembler::pn, slow_case);
__ delayed()->sll(Roffset, LogBytesPerWord, Roffset);
// get InstanceKlass
//__ sll(Roffset, LogBytesPerWord, Roffset); // executed in delay slot
__ add(Roffset, sizeof(ConstantPool), Roffset);
__ ld_ptr(Rscratch, Roffset, RinstanceKlass);
__ load_resolved_klass_at_offset(Rscratch, Roffset, RinstanceKlass);
// make sure klass is fully initialized:
__ ldub(RinstanceKlass, in_bytes(InstanceKlass::init_state_offset()), G3_scratch);
@ -3465,8 +3463,9 @@ void TemplateTable::checkcast() {
// Extract target class from constant pool
__ bind(quicked);
__ add(Roffset, sizeof(ConstantPool), Roffset);
__ ld_ptr(Lscratch, Roffset, RspecifiedKlass);
__ load_resolved_klass_at_offset(Lscratch, Roffset, RspecifiedKlass);
__ bind(resolved);
__ load_klass(Otos_i, RobjKlass); // get value klass
@ -3522,9 +3521,9 @@ void TemplateTable::instanceof() {
// Extract target class from constant pool
__ bind(quicked);
__ add(Roffset, sizeof(ConstantPool), Roffset);
__ get_constant_pool(Lscratch);
__ ld_ptr(Lscratch, Roffset, RspecifiedKlass);
__ load_resolved_klass_at_offset(Lscratch, Roffset, RspecifiedKlass);
__ bind(resolved);
__ load_klass(Otos_i, RobjKlass); // get value klass