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 18using namespace llvm; 19 20bool llvm::isStatepoint(const CallBase *Call) { 21 if (auto *F = Call->getCalledFunction()) 22 return F->getIntrinsicID() == Intrinsic::experimental_gc_statepoint; 23 return false; 24} 25 26bool llvm::isStatepoint(const Value *V) { 27 if (auto *Call = dyn_cast<CallBase>(V)) 28 return isStatepoint(Call); 29 return false; 30} 31 32bool llvm::isStatepoint(const Value &V) { 33 return isStatepoint(&V); 34} 35 36bool llvm::isGCRelocate(const CallBase *Call) { 37 return isa<GCRelocateInst>(Call); 38} 39 40bool llvm::isGCRelocate(const Value *V) { 41 if (auto *Call = dyn_cast<CallBase>(V)) 42 return isGCRelocate(Call); 43 return false; 44} 45 46bool llvm::isGCResult(const CallBase *Call) { return isa<GCResultInst>(Call); } 47 48bool llvm::isGCResult(const Value *V) { 49 if (auto *Call = dyn_cast<CallBase>(V)) 50 return isGCResult(Call); 51 return false; 52} 53 54bool llvm::isStatepointDirectiveAttr(Attribute Attr) { 55 return Attr.hasAttribute("statepoint-id") || 56 Attr.hasAttribute("statepoint-num-patch-bytes"); 57} 58 59StatepointDirectives 60llvm::parseStatepointDirectivesFromAttrs(AttributeList AS) { 61 StatepointDirectives Result; 62 63 Attribute AttrID = 64 AS.getAttribute(AttributeList::FunctionIndex, "statepoint-id"); 65 uint64_t StatepointID; 66 if (AttrID.isStringAttribute()) 67 if (!AttrID.getValueAsString().getAsInteger(10, StatepointID)) 68 Result.StatepointID = StatepointID; 69 70 uint32_t NumPatchBytes; 71 Attribute AttrNumPatchBytes = AS.getAttribute(AttributeList::FunctionIndex, 72 "statepoint-num-patch-bytes"); 73 if (AttrNumPatchBytes.isStringAttribute()) 74 if (!AttrNumPatchBytes.getValueAsString().getAsInteger(10, NumPatchBytes)) 75 Result.NumPatchBytes = NumPatchBytes; 76 77 return Result; 78} 79