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Issue 19504007: Calls to HCheckFunction can be eliminated if the value is an HConstant. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Deobfuscate a predicate Created 7 years, 5 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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1683 stream->Add("]"); 1683 stream->Add("]");
1684 } 1684 }
1685 1685
1686 1686
1687 void HCheckFunction::PrintDataTo(StringStream* stream) { 1687 void HCheckFunction::PrintDataTo(StringStream* stream) {
1688 value()->PrintNameTo(stream); 1688 value()->PrintNameTo(stream);
1689 stream->Add(" %p", *target()); 1689 stream->Add(" %p", *target());
1690 } 1690 }
1691 1691
1692 1692
1693 HValue* HCheckFunction::Canonicalize() {
1694 return (value()->IsConstant() &&
1695 HConstant::cast(value())->UniqueValueIdsMatch(target_unique_id_))
1696 ? NULL
1697 : this;
1698 }
1699
1700
1693 const char* HCheckInstanceType::GetCheckName() { 1701 const char* HCheckInstanceType::GetCheckName() {
1694 switch (check_) { 1702 switch (check_) {
1695 case IS_SPEC_OBJECT: return "object"; 1703 case IS_SPEC_OBJECT: return "object";
1696 case IS_JS_ARRAY: return "array"; 1704 case IS_JS_ARRAY: return "array";
1697 case IS_STRING: return "string"; 1705 case IS_STRING: return "string";
1698 case IS_INTERNALIZED_STRING: return "internalized_string"; 1706 case IS_INTERNALIZED_STRING: return "internalized_string";
1699 } 1707 }
1700 UNREACHABLE(); 1708 UNREACHABLE();
1701 return ""; 1709 return "";
1702 } 1710 }
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3980 case kBackingStore: 3988 case kBackingStore:
3981 if (!name_.is_null()) stream->Add(*String::cast(*name_)->ToCString()); 3989 if (!name_.is_null()) stream->Add(*String::cast(*name_)->ToCString());
3982 stream->Add("[backing-store]"); 3990 stream->Add("[backing-store]");
3983 break; 3991 break;
3984 } 3992 }
3985 3993
3986 stream->Add("@%d", offset()); 3994 stream->Add("@%d", offset());
3987 } 3995 }
3988 3996
3989 } } // namespace v8::internal 3997 } } // namespace v8::internal
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