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33 lines
1.3 KiB
33 lines
1.3 KiB
4 months ago
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/*
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* Copyright 2013, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "llvm/IR/Attributes.h"
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// Shared functionality for legacy function attribute encoding.
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static inline uint64_t encodeLLVMAttributesForBitcode(llvm::AttributeSet A,
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unsigned i) {
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uint64_t EncodedAttrs = A.Raw(i) & 0xffff;
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if (A.hasAttribute(i, llvm::Attribute::Alignment)) {
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// The alignment is stored as an actual power of 2 value (instead of the
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// compressed log2 form). It occupies bits 31-16 inclusive.
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EncodedAttrs |= (A.getParamAlignment(i) << 16);
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}
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// There are only 12 remaining attributes (bits 21-32), hence our 0xfff mask.
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EncodedAttrs |= (A.Raw(i) & (0xfffull << 21)) << 11;
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return EncodedAttrs;
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}
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