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Issue 12491023: Remove (H|L)JSArrayLength instructions (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Cleanup Created 7 years, 8 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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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1461 void HChange::PrintDataTo(StringStream* stream) { 1461 void HChange::PrintDataTo(StringStream* stream) {
1462 HUnaryOperation::PrintDataTo(stream); 1462 HUnaryOperation::PrintDataTo(stream);
1463 stream->Add(" %s to %s", from().Mnemonic(), to().Mnemonic()); 1463 stream->Add(" %s to %s", from().Mnemonic(), to().Mnemonic());
1464 1464
1465 if (CanTruncateToInt32()) stream->Add(" truncating-int32"); 1465 if (CanTruncateToInt32()) stream->Add(" truncating-int32");
1466 if (CheckFlag(kBailoutOnMinusZero)) stream->Add(" -0?"); 1466 if (CheckFlag(kBailoutOnMinusZero)) stream->Add(" -0?");
1467 if (CheckFlag(kDeoptimizeOnUndefined)) stream->Add(" deopt-on-undefined"); 1467 if (CheckFlag(kDeoptimizeOnUndefined)) stream->Add(" deopt-on-undefined");
1468 } 1468 }
1469 1469
1470 1470
1471 void HJSArrayLength::PrintDataTo(StringStream* stream) {
1472 value()->PrintNameTo(stream);
1473 if (HasTypeCheck()) {
1474 stream->Add(" ");
1475 typecheck()->PrintNameTo(stream);
1476 }
1477 }
1478
1479
1480 HValue* HUnaryMathOperation::Canonicalize() { 1471 HValue* HUnaryMathOperation::Canonicalize() {
1481 if (op() == kMathFloor) { 1472 if (op() == kMathFloor) {
1482 // If the input is integer32 then we replace the floor instruction 1473 // If the input is integer32 then we replace the floor instruction
1483 // with its input. This happens before the representation changes are 1474 // with its input. This happens before the representation changes are
1484 // introduced. 1475 // introduced.
1485 if (value()->representation().IsInteger32()) return value(); 1476 if (value()->representation().IsInteger32()) return value();
1486 1477
1487 #if defined(V8_TARGET_ARCH_ARM) || defined(V8_TARGET_ARCH_IA32) || \ 1478 #if defined(V8_TARGET_ARCH_ARM) || defined(V8_TARGET_ARCH_IA32) || \
1488 defined(V8_TARGET_ARCH_X64) 1479 defined(V8_TARGET_ARCH_X64)
1489 if (value()->IsDiv() && (value()->UseCount() == 1)) { 1480 if (value()->IsDiv() && (value()->UseCount() == 1)) {
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2409 2400
2410 2401
2411 void HParameter::PrintDataTo(StringStream* stream) { 2402 void HParameter::PrintDataTo(StringStream* stream) {
2412 stream->Add("%u", index()); 2403 stream->Add("%u", index());
2413 } 2404 }
2414 2405
2415 2406
2416 void HLoadNamedField::PrintDataTo(StringStream* stream) { 2407 void HLoadNamedField::PrintDataTo(StringStream* stream) {
2417 object()->PrintNameTo(stream); 2408 object()->PrintNameTo(stream);
2418 stream->Add(" @%d%s", offset(), is_in_object() ? "[in-object]" : ""); 2409 stream->Add(" @%d%s", offset(), is_in_object() ? "[in-object]" : "");
2410 if (HasTypeCheck()) {
2411 stream->Add(" ");
2412 typecheck()->PrintNameTo(stream);
2413 }
2419 } 2414 }
2420 2415
2421 2416
2422 // Returns true if an instance of this map can never find a property with this 2417 // Returns true if an instance of this map can never find a property with this
2423 // name in its prototype chain. This means all prototypes up to the top are 2418 // name in its prototype chain. This means all prototypes up to the top are
2424 // fast and don't have the name in them. It would be good if we could optimize 2419 // fast and don't have the name in them. It would be good if we could optimize
2425 // polymorphic loads where the property is sometimes found in the prototype 2420 // polymorphic loads where the property is sometimes found in the prototype
2426 // chain. 2421 // chain.
2427 static bool PrototypeChainCanNeverResolve( 2422 static bool PrototypeChainCanNeverResolve(
2428 Handle<Map> map, Handle<String> name) { 2423 Handle<Map> map, Handle<String> name) {
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3536 3531
3537 3532
3538 void HCheckFunction::Verify() { 3533 void HCheckFunction::Verify() {
3539 HInstruction::Verify(); 3534 HInstruction::Verify();
3540 ASSERT(HasNoUses()); 3535 ASSERT(HasNoUses());
3541 } 3536 }
3542 3537
3543 #endif 3538 #endif
3544 3539
3545 } } // namespace v8::internal 3540 } } // namespace v8::internal
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