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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- SSAContext.h ---------------------------------------------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | /// \file |
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| 9 | /// |
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| 10 | /// This file declares a specialization of the GenericSSAContext<X> |
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| 11 | /// class template for LLVM IR. |
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| 12 | /// |
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| 13 | //===----------------------------------------------------------------------===// |
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| 14 | |||
| 15 | #ifndef LLVM_IR_SSACONTEXT_H |
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| 16 | #define LLVM_IR_SSACONTEXT_H |
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| 17 | |||
| 18 | #include "llvm/ADT/GenericSSAContext.h" |
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| 19 | #include "llvm/IR/BasicBlock.h" |
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| 20 | #include "llvm/IR/ModuleSlotTracker.h" |
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| 21 | #include "llvm/Support/Printable.h" |
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| 22 | |||
| 23 | #include <memory> |
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| 24 | |||
| 25 | namespace llvm { |
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| 26 | class BasicBlock; |
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| 27 | class Function; |
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| 28 | class Instruction; |
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| 29 | class Value; |
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| 30 | template <typename> class SmallVectorImpl; |
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| 31 | template <typename, bool> class DominatorTreeBase; |
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| 32 | |||
| 33 | inline auto instrs(const BasicBlock &BB) { |
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| 34 | return llvm::make_range(BB.begin(), BB.end()); |
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| 35 | } |
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| 36 | |||
| 37 | template <> class GenericSSAContext<Function> { |
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| 38 | Function *F; |
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| 39 | |||
| 40 | public: |
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| 41 | using BlockT = BasicBlock; |
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| 42 | using FunctionT = Function; |
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| 43 | using InstructionT = Instruction; |
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| 44 | using ValueRefT = Value *; |
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| 45 | using ConstValueRefT = const Value *; |
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| 46 | static Value *ValueRefNull; |
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| 47 | using DominatorTreeT = DominatorTreeBase<BlockT, false>; |
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| 48 | |||
| 49 | void setFunction(Function &Fn); |
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| 50 | Function *getFunction() const { return F; } |
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| 51 | |||
| 52 | static BasicBlock *getEntryBlock(Function &F); |
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| 53 | static const BasicBlock *getEntryBlock(const Function &F); |
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| 54 | |||
| 55 | static void appendBlockDefs(SmallVectorImpl<Value *> &defs, |
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| 56 | BasicBlock &block); |
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| 57 | static void appendBlockDefs(SmallVectorImpl<const Value *> &defs, |
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| 58 | const BasicBlock &block); |
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| 59 | |||
| 60 | static void appendBlockTerms(SmallVectorImpl<Instruction *> &terms, |
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| 61 | BasicBlock &block); |
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| 62 | static void appendBlockTerms(SmallVectorImpl<const Instruction *> &terms, |
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| 63 | const BasicBlock &block); |
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| 64 | |||
| 65 | static bool comesBefore(const Instruction *lhs, const Instruction *rhs); |
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| 66 | static bool isConstantValuePhi(const Instruction &Instr); |
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| 67 | const BasicBlock *getDefBlock(const Value *value) const; |
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| 68 | |||
| 69 | Printable print(const BasicBlock *Block) const; |
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| 70 | Printable print(const Instruction *Inst) const; |
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| 71 | Printable print(const Value *Value) const; |
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| 72 | }; |
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| 73 | |||
| 74 | using SSAContext = GenericSSAContext<Function>; |
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| 75 | |||
| 76 | } // namespace llvm |
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| 77 | |||
| 78 | #endif // LLVM_IR_SSACONTEXT_H |