Stephen Hines | c6ca60f | 2023-05-09 02:19:22 -0700 | [diff] [blame^] | 1 | //===- SSAContext.h ---------------------------------------------*- C++ -*-===// |
| 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 | /// \file |
| 9 | /// |
| 10 | /// This file declares a specialization of the GenericSSAContext<X> |
| 11 | /// class template for LLVM IR. |
| 12 | /// |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | |
| 15 | #ifndef LLVM_IR_SSACONTEXT_H |
| 16 | #define LLVM_IR_SSACONTEXT_H |
| 17 | |
| 18 | #include "llvm/ADT/GenericSSAContext.h" |
| 19 | #include "llvm/IR/BasicBlock.h" |
| 20 | #include "llvm/IR/ModuleSlotTracker.h" |
| 21 | #include "llvm/Support/Printable.h" |
| 22 | |
| 23 | #include <memory> |
| 24 | |
| 25 | namespace llvm { |
| 26 | class BasicBlock; |
| 27 | class Function; |
| 28 | class Instruction; |
| 29 | class Value; |
| 30 | template <typename> class SmallVectorImpl; |
| 31 | template <typename, bool> class DominatorTreeBase; |
| 32 | |
| 33 | inline auto instrs(const BasicBlock &BB) { |
| 34 | return llvm::make_range(BB.begin(), BB.end()); |
| 35 | } |
| 36 | |
| 37 | template <> class GenericSSAContext<Function> { |
| 38 | Function *F; |
| 39 | |
| 40 | public: |
| 41 | using BlockT = BasicBlock; |
| 42 | using FunctionT = Function; |
| 43 | using InstructionT = Instruction; |
| 44 | using ValueRefT = Value *; |
| 45 | using ConstValueRefT = const Value *; |
| 46 | static Value *ValueRefNull; |
| 47 | using DominatorTreeT = DominatorTreeBase<BlockT, false>; |
| 48 | |
| 49 | void setFunction(Function &Fn); |
| 50 | Function *getFunction() const { return F; } |
| 51 | |
| 52 | static BasicBlock *getEntryBlock(Function &F); |
| 53 | static const BasicBlock *getEntryBlock(const Function &F); |
| 54 | |
| 55 | static void appendBlockDefs(SmallVectorImpl<Value *> &defs, |
| 56 | BasicBlock &block); |
| 57 | static void appendBlockDefs(SmallVectorImpl<const Value *> &defs, |
| 58 | const BasicBlock &block); |
| 59 | |
| 60 | static void appendBlockTerms(SmallVectorImpl<Instruction *> &terms, |
| 61 | BasicBlock &block); |
| 62 | static void appendBlockTerms(SmallVectorImpl<const Instruction *> &terms, |
| 63 | const BasicBlock &block); |
| 64 | |
| 65 | static bool comesBefore(const Instruction *lhs, const Instruction *rhs); |
| 66 | static bool isConstantValuePhi(const Instruction &Instr); |
| 67 | const BasicBlock *getDefBlock(const Value *value) const; |
| 68 | |
| 69 | Printable print(const BasicBlock *Block) const; |
| 70 | Printable print(const Instruction *Inst) const; |
| 71 | Printable print(const Value *Value) const; |
| 72 | }; |
| 73 | |
| 74 | using SSAContext = GenericSSAContext<Function>; |
| 75 | |
| 76 | } // namespace llvm |
| 77 | |
| 78 | #endif // LLVM_IR_SSACONTEXT_H |