OLD | NEW |
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 |
(...skipping 913 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
924 } | 924 } |
925 | 925 |
926 | 926 |
927 void HJSArrayLength::PrintDataTo(StringStream* stream) { | 927 void HJSArrayLength::PrintDataTo(StringStream* stream) { |
928 value()->PrintNameTo(stream); | 928 value()->PrintNameTo(stream); |
929 stream->Add(" "); | 929 stream->Add(" "); |
930 typecheck()->PrintNameTo(stream); | 930 typecheck()->PrintNameTo(stream); |
931 } | 931 } |
932 | 932 |
933 | 933 |
| 934 HValue* HUnaryMathOperation::Canonicalize() { |
| 935 if (op() == kMathFloor) { |
| 936 // If the input is integer32 then we replace the floor instruction |
| 937 // with its input. This happens before the representation changes are |
| 938 // introduced. |
| 939 if (value()->representation().IsInteger32()) return value(); |
| 940 |
| 941 #ifdef V8_TARGET_ARCH_ARM |
| 942 if (value()->IsDiv() && (value()->UseCount() == 1)) { |
| 943 // TODO(2038): Implement this optimization for non ARM architectures. |
| 944 HDiv* hdiv = HDiv::cast(value()); |
| 945 HValue* left = hdiv->left(); |
| 946 HValue* right = hdiv->right(); |
| 947 // Try to simplify left and right values of the division. |
| 948 HValue* new_left = |
| 949 LChunkBuilder::SimplifiedDividendForMathFloorOfDiv(left); |
| 950 HValue* new_right = |
| 951 LChunkBuilder::SimplifiedDivisorForMathFloorOfDiv(right); |
| 952 |
| 953 // Return if left or right are not optimizable. |
| 954 if ((new_left == NULL) || (new_right == NULL)) return this; |
| 955 |
| 956 // Insert the new values in the graph. |
| 957 if (new_left->IsInstruction() && |
| 958 !HInstruction::cast(new_left)->IsLinked()) { |
| 959 HInstruction::cast(new_left)->InsertBefore(this); |
| 960 } |
| 961 if (new_right->IsInstruction() && |
| 962 !HInstruction::cast(new_right)->IsLinked()) { |
| 963 HInstruction::cast(new_right)->InsertBefore(this); |
| 964 } |
| 965 HMathFloorOfDiv* instr = new HMathFloorOfDiv(context(), |
| 966 new_left, |
| 967 new_right); |
| 968 // Replace this HMathFloor instruction by the new HMathFloorOfDiv. |
| 969 instr->InsertBefore(this); |
| 970 ReplaceAllUsesWith(instr); |
| 971 Kill(); |
| 972 // We know the division had no other uses than this HMathFloor. Delete it. |
| 973 // Also delete the arguments of the division if they are not used any |
| 974 // more. |
| 975 hdiv->DeleteAndReplaceWith(NULL); |
| 976 ASSERT(left->IsChange() || left->IsConstant()); |
| 977 ASSERT(right->IsChange() || right->IsConstant()); |
| 978 if (left->HasNoUses()) left->DeleteAndReplaceWith(NULL); |
| 979 if (right->HasNoUses()) right->DeleteAndReplaceWith(NULL); |
| 980 |
| 981 // Return NULL to remove this instruction from the graph. |
| 982 return NULL; |
| 983 } |
| 984 #endif // V8_TARGET_ARCH_ARM |
| 985 } |
| 986 return this; |
| 987 } |
| 988 |
| 989 |
934 HValue* HCheckInstanceType::Canonicalize() { | 990 HValue* HCheckInstanceType::Canonicalize() { |
935 if (check_ == IS_STRING && | 991 if (check_ == IS_STRING && |
936 !value()->type().IsUninitialized() && | 992 !value()->type().IsUninitialized() && |
937 value()->type().IsString()) { | 993 value()->type().IsString()) { |
938 return NULL; | 994 return NULL; |
939 } | 995 } |
940 if (check_ == IS_SYMBOL && | 996 if (check_ == IS_SYMBOL && |
941 value()->IsConstant() && | 997 value()->IsConstant() && |
942 HConstant::cast(value())->handle()->IsSymbol()) { | 998 HConstant::cast(value())->handle()->IsSymbol()) { |
943 return NULL; | 999 return NULL; |
(...skipping 1426 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
2370 | 2426 |
2371 | 2427 |
2372 void HCheckPrototypeMaps::Verify() { | 2428 void HCheckPrototypeMaps::Verify() { |
2373 HInstruction::Verify(); | 2429 HInstruction::Verify(); |
2374 ASSERT(HasNoUses()); | 2430 ASSERT(HasNoUses()); |
2375 } | 2431 } |
2376 | 2432 |
2377 #endif | 2433 #endif |
2378 | 2434 |
2379 } } // namespace v8::internal | 2435 } } // namespace v8::internal |
OLD | NEW |