1 //===-- IR/Statepoint.cpp -- gc.statepoint utilities --- -----------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file contains some utility functions to help recognize gc.statepoint 10 // intrinsics. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/IR/Statepoint.h" 15 16 #include "llvm/IR/Function.h" 17 18 using namespace llvm; 19 20 bool llvm::isStatepointDirectiveAttr(Attribute Attr) { 21 return Attr.hasAttribute("statepoint-id") || 22 Attr.hasAttribute("statepoint-num-patch-bytes"); 23 } 24 25 StatepointDirectives 26 llvm::parseStatepointDirectivesFromAttrs(AttributeList AS) { 27 StatepointDirectives Result; 28 29 Attribute AttrID = AS.getFnAttr("statepoint-id"); 30 uint64_t StatepointID; 31 if (AttrID.isStringAttribute()) 32 if (!AttrID.getValueAsString().getAsInteger(10, StatepointID)) 33 Result.StatepointID = StatepointID; 34 35 uint32_t NumPatchBytes; 36 Attribute AttrNumPatchBytes = AS.getFnAttr("statepoint-num-patch-bytes"); 37 if (AttrNumPatchBytes.isStringAttribute()) 38 if (!AttrNumPatchBytes.getValueAsString().getAsInteger(10, NumPatchBytes)) 39 Result.NumPatchBytes = NumPatchBytes; 40 41 return Result; 42 } 43