Mercurial > hg > truffle
diff src/cpu/x86/vm/c1_LIRGenerator_x86.cpp @ 6143:8b0a4867acf0
7174218: remove AtomicLongCSImpl intrinsics
Reviewed-by: kvn, twisti
Contributed-by: Krystal Mok <sajia@taobao.com>
author | twisti |
---|---|
date | Tue, 12 Jun 2012 14:31:44 -0700 |
parents | 6759698e3140 |
children | e2fe93124108 |
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--- a/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp Tue Jun 12 09:47:23 2012 -0700 +++ b/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp Tue Jun 12 14:31:44 2012 -0700 @@ -718,35 +718,6 @@ } -void LIRGenerator::do_AttemptUpdate(Intrinsic* x) { - assert(x->number_of_arguments() == 3, "wrong type"); - LIRItem obj (x->argument_at(0), this); // AtomicLong object - LIRItem cmp_value (x->argument_at(1), this); // value to compare with field - LIRItem new_value (x->argument_at(2), this); // replace field with new_value if it matches cmp_value - - // compare value must be in rdx,eax (hi,lo); may be destroyed by cmpxchg8 instruction - cmp_value.load_item_force(FrameMap::long0_opr); - - // new value must be in rcx,ebx (hi,lo) - new_value.load_item_force(FrameMap::long1_opr); - - // object pointer register is overwritten with field address - obj.load_item(); - - // generate compare-and-swap; produces zero condition if swap occurs - int value_offset = sun_misc_AtomicLongCSImpl::value_offset(); - LIR_Opr addr = new_pointer_register(); - __ leal(LIR_OprFact::address(new LIR_Address(obj.result(), value_offset, T_LONG)), addr); - LIR_Opr t1 = LIR_OprFact::illegalOpr; // no temp needed - LIR_Opr t2 = LIR_OprFact::illegalOpr; // no temp needed - __ cas_long(addr, cmp_value.result(), new_value.result(), t1, t2); - - // generate conditional move of boolean result - LIR_Opr result = rlock_result(x); - __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), result, T_LONG); -} - - void LIRGenerator::do_CompareAndSwap(Intrinsic* x, ValueType* type) { assert(x->number_of_arguments() == 4, "wrong type"); LIRItem obj (x->argument_at(0), this); // object