1 /* 2 * Copyright 2013, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "llvm/IR/Attributes.h" 18 19 // Shared functionality for legacy function attribute encoding. 20 static inline uint64_t encodeLLVMAttributesForBitcode(llvm::AttributeSet A, 21 unsigned i) { 22 uint64_t EncodedAttrs = A.Raw(i) & 0xffff; 23 if (A.hasAttribute(i, llvm::Attribute::Alignment)) { 24 // The alignment is stored as an actual power of 2 value (instead of the 25 // compressed log2 form). It occupies bits 31-16 inclusive. 26 EncodedAttrs |= (A.getParamAlignment(i) << 16); 27 } 28 // There are only 12 remaining attributes (bits 21-32), hence our 0xfff mask. 29 EncodedAttrs |= (A.Raw(i) & (0xfffull << 21)) << 11; 30 return EncodedAttrs; 31 } 32 33
