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comparison src/share/vm/code/nmethod.cpp @ 5251:467de393651a

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optimization: frame prologue & epilogue ommitted for methods with no spills, no callee-saved registers, no incoming stack args and no debug info
author Doug Simon <doug.simon@oracle.com>
date Wed, 18 Apr 2012 23:39:07 +0200
parents 8e6db1a5c537
children 2585af1e26ac
comparison
equal deleted inserted replaced
5250:0f6f647e8a96 5251:467de393651a
831 831
832 // Section offsets 832 // Section offsets
833 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); 833 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts());
834 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); 834 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs());
835 835
836 // Exception handler and deopt handler are in the stub section
837 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set");
838 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set");
839 #ifdef GRAAL 836 #ifdef GRAAL
840 // graal produces no (!) stub section 837 // graal produces no (!) stub section
841 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); 838 if (offsets->value(CodeOffsets::Exceptions) != -1) {
842 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); 839 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions);
840 } else {
841 _exception_offset = -1;
842 }
843 if (offsets->value(CodeOffsets::Deopt) != -1) {
844 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt);
845 } else {
846 _deoptimize_offset = -1;
847 }
843 if (offsets->value(CodeOffsets::DeoptMH) != -1) { 848 if (offsets->value(CodeOffsets::DeoptMH) != -1) {
844 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); 849 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH);
845 } else { 850 } else {
846 _deoptimize_mh_offset = -1; 851 _deoptimize_mh_offset = -1;
847 } 852 }
848 #else 853 #else
854 // Exception handler and deopt handler are in the stub section
855 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set");
856 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set");
857
849 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); 858 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions);
850 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); 859 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt);
851 if (offsets->value(CodeOffsets::DeoptMH) != -1) { 860 if (offsets->value(CodeOffsets::DeoptMH) != -1) {
852 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); 861 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH);
853 } else { 862 } else {