Ryan Macnak
d229aa0edd
Clang relies on this, gcc does not. TEST=ci Change-Id: Iee14790367f6807abd222f69990640d44e6f1f77 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/339081 Reviewed-by: Daco Harkes <dacoharkes@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
// Copyright (c) 2020, 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_CONSTANTS_BASE_H_
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#define RUNTIME_VM_CONSTANTS_BASE_H_
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namespace dart {
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// Alignment strategies for how to align values.
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enum AlignmentStrategy {
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// Align to the size of the value.
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kAlignedToValueSize,
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// Align to the size of the value, but align 8 byte-sized values to 4 bytes.
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// Both double and int64.
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kAlignedToValueSizeBut8AlignedTo4,
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// Align to the architecture size.
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kAlignedToWordSize,
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// Align to the greater of architecture size or value size.
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kAlignedToWordSizeAndValueSize,
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};
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// Minimum size strategies for how to store values.
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enum ExtensionStrategy {
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// Values can have arbitrary small size with the upper bits undefined.
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kNotExtended,
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// Values smaller than 4 bytes are passed around zero- or sign-extended to
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// 4 bytes.
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kExtendedTo4,
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// Values smaller than 8 bytes are passed around zero- or sign-extended to
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// 8 bytes.
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kExtendedTo8,
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};
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} // namespace dart
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#endif // RUNTIME_VM_CONSTANTS_BASE_H_
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