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