Mercurial > hg > graal-jvmci-8
diff src/cpu/sparc/vm/c1_CodeStubs_sparc.cpp @ 8860:46f6f063b272
7153771: array bound check elimination for c1
Summary: when possible optimize out array bound checks, inserting predicates when needed.
Reviewed-by: never, kvn, twisti
Contributed-by: thomaswue <thomas.wuerthinger@oracle.com>
author | roland |
---|---|
date | Thu, 21 Mar 2013 09:27:54 +0100 |
parents | db9981fd3124 |
children | f98f5d48f511 |
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--- a/src/cpu/sparc/vm/c1_CodeStubs_sparc.cpp Wed Mar 20 17:04:45 2013 -0700 +++ b/src/cpu/sparc/vm/c1_CodeStubs_sparc.cpp Thu Mar 21 09:27:54 2013 +0100 @@ -51,6 +51,16 @@ void RangeCheckStub::emit_code(LIR_Assembler* ce) { __ bind(_entry); + if (_info->deoptimize_on_exception()) { + address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); + __ call(a, relocInfo::runtime_call_type); + __ delayed()->nop(); + ce->add_call_info_here(_info); + ce->verify_oop_map(_info); + debug_only(__ should_not_reach_here()); + return; + } + if (_index->is_register()) { __ mov(_index->as_register(), G4); } else { @@ -64,11 +74,22 @@ __ delayed()->nop(); ce->add_call_info_here(_info); ce->verify_oop_map(_info); -#ifdef ASSERT - __ should_not_reach_here(); -#endif + debug_only(__ should_not_reach_here()); +} + +PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) { + _info = new CodeEmitInfo(info); } +void PredicateFailedStub::emit_code(LIR_Assembler* ce) { + __ bind(_entry); + address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); + __ call(a, relocInfo::runtime_call_type); + __ delayed()->nop(); + ce->add_call_info_here(_info); + ce->verify_oop_map(_info); + debug_only(__ should_not_reach_here()); +} void CounterOverflowStub::emit_code(LIR_Assembler* ce) { __ bind(_entry); @@ -99,10 +120,17 @@ void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) { + address a; + if (_info->deoptimize_on_exception()) { + // Deoptimize, do not throw the exception, because it is probably wrong to do it here. + a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); + } else { + a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id); + } + ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); __ bind(_entry); - __ call(Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id), - relocInfo::runtime_call_type); + __ call(a, relocInfo::runtime_call_type); __ delayed()->nop(); ce->add_call_info_here(_info); ce->verify_oop_map(_info);