| //===- TypeMetadataUtils.h - Utilities related to type metadata --*- C++ -*-==// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains functions that make it easier to manipulate type metadata |
| // for devirtualization. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_ANALYSIS_TYPEMETADATAUTILS_H |
| #define LLVM_ANALYSIS_TYPEMETADATAUTILS_H |
| |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/IR/CallSite.h" |
| |
| namespace llvm { |
| |
| class DominatorTree; |
| |
| /// The type of CFI jumptable needed for a function. |
| enum CfiFunctionLinkage { |
| CFL_Definition = 0, |
| CFL_Declaration = 1, |
| CFL_WeakDeclaration = 2 |
| }; |
| |
| /// A call site that could be devirtualized. |
| struct DevirtCallSite { |
| /// The offset from the address point to the virtual function. |
| uint64_t Offset; |
| /// The call site itself. |
| CallSite CS; |
| }; |
| |
| /// Given a call to the intrinsic \@llvm.type.test, find all devirtualizable |
| /// call sites based on the call and return them in DevirtCalls. |
| void findDevirtualizableCallsForTypeTest( |
| SmallVectorImpl<DevirtCallSite> &DevirtCalls, |
| SmallVectorImpl<CallInst *> &Assumes, const CallInst *CI, |
| DominatorTree &DT); |
| |
| /// Given a call to the intrinsic \@llvm.type.checked.load, find all |
| /// devirtualizable call sites based on the call and return them in DevirtCalls. |
| void findDevirtualizableCallsForTypeCheckedLoad( |
| SmallVectorImpl<DevirtCallSite> &DevirtCalls, |
| SmallVectorImpl<Instruction *> &LoadedPtrs, |
| SmallVectorImpl<Instruction *> &Preds, bool &HasNonCallUses, |
| const CallInst *CI, DominatorTree &DT); |
| } |
| |
| #endif |