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Issue 6744006: Add binary-op stub variant to handle oddball objects more efficiently. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 9 years, 9 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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1347 break; 1347 break;
1348 case TRBinaryOpIC::SMI: 1348 case TRBinaryOpIC::SMI:
1349 GenerateSmiStub(masm); 1349 GenerateSmiStub(masm);
1350 break; 1350 break;
1351 case TRBinaryOpIC::INT32: 1351 case TRBinaryOpIC::INT32:
1352 GenerateInt32Stub(masm); 1352 GenerateInt32Stub(masm);
1353 break; 1353 break;
1354 case TRBinaryOpIC::HEAP_NUMBER: 1354 case TRBinaryOpIC::HEAP_NUMBER:
1355 GenerateHeapNumberStub(masm); 1355 GenerateHeapNumberStub(masm);
1356 break; 1356 break;
1357 case TRBinaryOpIC::ODDBALL:
1358 GenerateOddballStub(masm);
1359 break;
1357 case TRBinaryOpIC::STRING: 1360 case TRBinaryOpIC::STRING:
1358 GenerateStringStub(masm); 1361 GenerateStringStub(masm);
1359 break; 1362 break;
1360 case TRBinaryOpIC::GENERIC: 1363 case TRBinaryOpIC::GENERIC:
1361 GenerateGeneric(masm); 1364 GenerateGeneric(masm);
1362 break; 1365 break;
1363 default: 1366 default:
1364 UNREACHABLE(); 1367 UNREACHABLE();
1365 } 1368 }
1366 } 1369 }
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2012 break; 2015 break;
2013 case Token::SHR: 2016 case Token::SHR:
2014 __ InvokeBuiltin(Builtins::SHR, JUMP_FUNCTION); 2017 __ InvokeBuiltin(Builtins::SHR, JUMP_FUNCTION);
2015 break; 2018 break;
2016 default: 2019 default:
2017 UNREACHABLE(); 2020 UNREACHABLE();
2018 } 2021 }
2019 } 2022 }
2020 2023
2021 2024
2025 void TypeRecordingBinaryOpStub::GenerateOddballStub(MacroAssembler* masm) {
2026 Label call_runtime;
2027
2028 if (op_ == Token::ADD) {
2029 GenerateAddStrings(masm);
Erik Corry 2011/03/25 14:21:18 Please add comment that we need this because add i
fschneider 2011/03/28 08:00:54 Done.
2030 }
2031
2032 // Convert odd ball arguments to numbers.
2033 NearLabel check, done;
2034 __ cmp(edx, FACTORY->undefined_value());
2035 __ j(not_equal, &check);
2036 if (Token::IsBitOp(op_)) {
2037 __ xor_(edx, Operand(edx));
2038 } else {
2039 __ mov(edx, Immediate(FACTORY->nan_value()));
2040 }
2041 __ jmp(&done);
2042 __ bind(&check);
2043 __ cmp(eax, FACTORY->undefined_value());
2044 __ j(not_equal, &done);
2045 if (Token::IsBitOp(op_)) {
2046 __ xor_(eax, Operand(eax));
2047 } else {
2048 __ mov(eax, Immediate(FACTORY->nan_value()));
2049 }
2050 __ bind(&done);
2051
2052 GenerateHeapNumberStub(masm);
2053 }
2054
2055
2022 void TypeRecordingBinaryOpStub::GenerateHeapNumberStub(MacroAssembler* masm) { 2056 void TypeRecordingBinaryOpStub::GenerateHeapNumberStub(MacroAssembler* masm) {
2023 Label call_runtime; 2057 Label call_runtime;
2024 ASSERT(operands_type_ == TRBinaryOpIC::HEAP_NUMBER);
2025 2058
2026 // Floating point case. 2059 // Floating point case.
2027 switch (op_) { 2060 switch (op_) {
2028 case Token::ADD: 2061 case Token::ADD:
2029 case Token::SUB: 2062 case Token::SUB:
2030 case Token::MUL: 2063 case Token::MUL:
2031 case Token::DIV: { 2064 case Token::DIV: {
2032 Label not_floats; 2065 Label not_floats;
2033 if (masm->isolate()->cpu_features()->IsSupported(SSE2)) { 2066 if (masm->isolate()->cpu_features()->IsSupported(SSE2)) {
2034 CpuFeatures::Scope use_sse2(SSE2); 2067 CpuFeatures::Scope use_sse2(SSE2);
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6489 // Do a tail call to the rewritten stub. 6522 // Do a tail call to the rewritten stub.
6490 __ jmp(Operand(edi)); 6523 __ jmp(Operand(edi));
6491 } 6524 }
6492 6525
6493 6526
6494 #undef __ 6527 #undef __
6495 6528
6496 } } // namespace v8::internal 6529 } } // namespace v8::internal
6497 6530
6498 #endif // V8_TARGET_ARCH_IA32 6531 #endif // V8_TARGET_ARCH_IA32
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