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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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8925 static bool ShiftAmountsAllowReplaceByRotate(HValue* sa, | 8925 static bool ShiftAmountsAllowReplaceByRotate(HValue* sa, |
8926 HValue* const32_minus_sa) { | 8926 HValue* const32_minus_sa) { |
8927 if (sa->IsConstant() && const32_minus_sa->IsConstant()) { | 8927 if (sa->IsConstant() && const32_minus_sa->IsConstant()) { |
8928 const HConstant* c1 = HConstant::cast(sa); | 8928 const HConstant* c1 = HConstant::cast(sa); |
8929 const HConstant* c2 = HConstant::cast(const32_minus_sa); | 8929 const HConstant* c2 = HConstant::cast(const32_minus_sa); |
8930 return c1->HasInteger32Value() && c2->HasInteger32Value() && | 8930 return c1->HasInteger32Value() && c2->HasInteger32Value() && |
8931 (c1->Integer32Value() + c2->Integer32Value() == 32); | 8931 (c1->Integer32Value() + c2->Integer32Value() == 32); |
8932 } | 8932 } |
8933 if (!const32_minus_sa->IsSub()) return false; | 8933 if (!const32_minus_sa->IsSub()) return false; |
8934 HSub* sub = HSub::cast(const32_minus_sa); | 8934 HSub* sub = HSub::cast(const32_minus_sa); |
8935 if (sa != sub->right()) return false; | 8935 return sub->left()->EqualsInteger32Constant(32) && sub->right() == sa; |
8936 HValue* const32 = sub->left(); | |
8937 if (!const32->IsConstant() || | |
8938 HConstant::cast(const32)->Integer32Value() != 32) { | |
8939 return false; | |
8940 } | |
8941 return (sub->right() == sa); | |
8942 } | 8936 } |
8943 | 8937 |
8944 | 8938 |
8945 // Checks if the left and the right are shift instructions with the oposite | 8939 // Checks if the left and the right are shift instructions with the oposite |
8946 // directions that can be replaced by one rotate right instruction or not. | 8940 // directions that can be replaced by one rotate right instruction or not. |
8947 // Returns the operand and the shift amount for the rotate instruction in the | 8941 // Returns the operand and the shift amount for the rotate instruction in the |
8948 // former case. | 8942 // former case. |
8949 bool HGraphBuilder::MatchRotateRight(HValue* left, | 8943 bool HGraphBuilder::MatchRotateRight(HValue* left, |
8950 HValue* right, | 8944 HValue* right, |
8951 HValue** operand, | 8945 HValue** operand, |
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11292 if (ShouldProduceTraceOutput()) { | 11286 if (ShouldProduceTraceOutput()) { |
11293 isolate()->GetHTracer()->TraceHydrogen(name(), graph_); | 11287 isolate()->GetHTracer()->TraceHydrogen(name(), graph_); |
11294 } | 11288 } |
11295 | 11289 |
11296 #ifdef DEBUG | 11290 #ifdef DEBUG |
11297 graph_->Verify(false); // No full verify. | 11291 graph_->Verify(false); // No full verify. |
11298 #endif | 11292 #endif |
11299 } | 11293 } |
11300 | 11294 |
11301 } } // namespace v8::internal | 11295 } } // namespace v8::internal |
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