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7063628: Use cbcond on T4

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Add new short branch instruction to Hotspot sparc assembler.

Reviewed-by: never, twisti, jrose
This commit is contained in:
Vladimir Kozlov 2011-07-21 11:25:07 -07:00
parent aa16309657
commit 48c1293916
30 changed files with 966 additions and 1097 deletions
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14
hotspot/src/cpu/sparc/vm/interpreter_sparc.cpp
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@ -191,22 +191,19 @@ address AbstractInterpreterGenerator::generate_slow_signature_handler() {
// Optimization, see if there are any more args and get out prior to checking
// all 16 float registers. My guess is that this is rare.
// If is_register is false, then we are done the first six integer args.
__ tst(G4_scratch);
__ brx(Assembler::zero, false, Assembler::pt, done);
__ delayed()->nop();
__ br_null_short(G4_scratch, Assembler::pt, done);
}
__ ba(false, NextArg);
__ ba(NextArg);
__ delayed()->srl( G4_scratch, 2, G4_scratch );
__ bind(LoadFloatArg);
__ ldf( FloatRegisterImpl::S, a, ldarg.as_float_register(), 4);
__ ba(false, NextArg);
__ ba(NextArg);
__ delayed()->srl( G4_scratch, 2, G4_scratch );
__ bind(LoadDoubleArg);
__ ldf( FloatRegisterImpl::D, a, ldarg.as_double_register() );
__ ba(false, NextArg);
__ ba(NextArg);
__ delayed()->srl( G4_scratch, 2, G4_scratch );
__ bind(NextArg);
@ -234,8 +231,7 @@ void InterpreterGenerator::generate_counter_overflow(Label& Lcontinue) {
__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), O2, O2, true);
// returns verified_entry_point or NULL
// we ignore it in any case
__ ba(false, Lcontinue);
__ delayed()->nop();
__ ba_short(Lcontinue);
}