Ryan Macnak
6fe15f6df9
This works around bugs in UndefinedBehaviorSanitizer and Clang. Bug: b/28638298 Change-Id: I6be595f9664516019d28017d24559583a1ae3a21 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144354 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
54 lines
2.2 KiB
C++
54 lines
2.2 KiB
C++
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_COMPILER_BACKEND_EVALUATOR_H_
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#define RUNTIME_VM_COMPILER_BACKEND_EVALUATOR_H_
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#if defined(DART_PRECOMPILED_RUNTIME)
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#error "AOT runtime should not use compiler sources (including header files)"
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#endif // defined(DART_PRECOMPILED_RUNTIME)
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#include "vm/allocation.h"
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#include "vm/compiler/backend/flow_graph.h"
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#include "vm/compiler/backend/il.h"
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#include "vm/compiler/backend/locations.h"
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namespace dart {
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// Namespace for static helper methods that evaluate constant expressions.
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class Evaluator : public AllStatic {
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public:
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// Truncates the given int64 value based on the representation.
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static int64_t TruncateTo(int64_t v, Representation r);
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// Evaluates a binary integer operation and returns a pointer to a
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// canonicalized RawInteger.
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static IntegerPtr BinaryIntegerEvaluate(const Object& left,
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const Object& right,
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Token::Kind token_kind,
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bool is_truncating,
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Representation representation,
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Thread* thread);
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// Evaluates a unary integer operation and returns a pointer to a
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// canonicalized RawInteger.
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static IntegerPtr UnaryIntegerEvaluate(const Object& value,
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Token::Kind token_kind,
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Representation representation,
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Thread* thread);
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// Evaluates a binary double operation and returns the result.
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static double EvaluateDoubleOp(const double left,
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const double right,
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Token::Kind token_kind);
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// Returns whether the value is an int64, and returns the int64 value
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// through the result parameter.
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static bool ToIntegerConstant(Value* value, int64_t* result);
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};
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} // namespace dart
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#endif // RUNTIME_VM_COMPILER_BACKEND_EVALUATOR_H_
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