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8023542: Test java/io/File/CheckPermission.java fails due to unfinished recursion (java.lang.StackOverflowError) when JIT'ed code (-client,-server) is running

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Move null check before klass reference materialization in checkcast

Reviewed-by: kvn, roland
This commit is contained in:
Igor Veresov 2013-09-18 14:10:21 -07:00
parent 0f418a050c
commit f99391ee6f
1 changed files with 8 additions and 8 deletions
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16
hotspot/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp
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@ -1724,14 +1724,6 @@ void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, L
}
assert_different_registers(obj, k_RInfo, klass_RInfo);
if (!k->is_loaded()) {
klass2reg_with_patching(k_RInfo, op->info_for_patch());
} else {
#ifdef _LP64
__ mov_metadata(k_RInfo, k->constant_encoding());
#endif // _LP64
}
assert(obj != k_RInfo, "must be different");
__ cmpptr(obj, (int32_t)NULL_WORD);
if (op->should_profile()) {
@ -1748,6 +1740,14 @@ void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, L
} else {
__ jcc(Assembler::equal, *obj_is_null);
}
if (!k->is_loaded()) {
klass2reg_with_patching(k_RInfo, op->info_for_patch());
} else {
#ifdef _LP64
__ mov_metadata(k_RInfo, k->constant_encoding());
#endif // _LP64
}
__ verify_oop(obj);
if (op->fast_check()) {