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Add skeleton of simple basic block instruction selector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54522 91177308-0d34-0410-b5e6-96231b3b80d8
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lib/CodeGen/SelectionDAG
@ -12,10 +12,10 @@
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "isel"
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#include "llvm/CodeGen/SelectionDAGISel.h"
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#include "SimpleBBISel.h"
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#include "llvm/ADT/BitVector.h"
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#include "llvm/Analysis/AliasAnalysis.h"
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#include "llvm/CodeGen/SelectionDAGISel.h"
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#include "llvm/CodeGen/ScheduleDAG.h"
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#include "llvm/Constants.h"
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#include "llvm/CallingConv.h"
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#include "llvm/DerivedTypes.h"
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@ -33,6 +33,7 @@
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#include "llvm/CodeGen/MachineJumpTableInfo.h"
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#include "llvm/CodeGen/MachineModuleInfo.h"
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#include "llvm/CodeGen/MachineRegisterInfo.h"
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#include "llvm/CodeGen/ScheduleDAG.h"
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#include "llvm/CodeGen/SchedulerRegistry.h"
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#include "llvm/CodeGen/SelectionDAG.h"
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#include "llvm/Target/TargetRegisterInfo.h"
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@ -5441,11 +5442,14 @@ void SelectionDAGISel::SelectAllBasicBlocks(Function &Fn, MachineFunction &MF,
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// each basic block.
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NodeAllocatorType NodeAllocator;
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SimpleBBISel SISel(MF, TLI);
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std::vector<std::pair<MachineInstr*, unsigned> > PHINodesToUpdate;
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for (Function::iterator I = Fn.begin(), E = Fn.end(); I != E; ++I) {
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BasicBlock *LLVMBB = &*I;
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PHINodesToUpdate.clear();
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SelectBasicBlock(LLVMBB, MF, FuncInfo, PHINodesToUpdate, NodeAllocator);
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if (!FastISel || !SISel.SelectBasicBlock(LLVMBB, FuncInfo.MBBMap[LLVMBB]))
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SelectBasicBlock(LLVMBB, MF, FuncInfo, PHINodesToUpdate, NodeAllocator);
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FinishBasicBlock(LLVMBB, MF, FuncInfo, PHINodesToUpdate, NodeAllocator);
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}
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}
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29
lib/CodeGen/SelectionDAG/SimpleBBISel.cpp
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29
lib/CodeGen/SelectionDAG/SimpleBBISel.cpp
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@ -0,0 +1,29 @@
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//===-- SimpleBBISel.cpp - Implement the SimpleBBISel class ---------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This implements simple basic block instruction selection. If the given
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// BasicBlock is considered "simple", i.e. all operations are supported by
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// the target and their types are legal, it does instruction directly from
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// LLVM BasicBlock to MachineInstr's.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "simple-isel"
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#include "SimpleBBISel.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/CodeGen/SelectionDAG.h"
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using namespace llvm;
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/// SelectBasicBlock - Try to convert a LLVM basic block into a
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/// MachineBasicBlock using simple instruction selection. Returns false if it
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/// is not able to do so.
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bool SimpleBBISel::SelectBasicBlock(BasicBlock *BB, MachineBasicBlock *MBB) {
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return false;
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}
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lib/CodeGen/SelectionDAG/SimpleBBISel.h
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lib/CodeGen/SelectionDAG/SimpleBBISel.h
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@ -0,0 +1,45 @@
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//===-- SimpleBBISel.cpp - Definition of the SimpleBBISel class -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the SimpleBBISel class which handles simple basic block
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// instruction selection. If the given BasicBlock is considered "simple", i.e.
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// all operations are supported by the target and their types are legal, it
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// does instruction directly from LLVM BasicBlock to MachineInstr's.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SELECTIONDAG_SIMPLEBBISEL_H
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#define SELECTIONDAG_SIMPLEBBISEL_H
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#include "llvm/Support/Compiler.h"
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namespace llvm {
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class BasicBlock;
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class MachineBasicBlock;
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class MachineFunction;
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class TargetLowering;
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class VISIBILITY_HIDDEN SimpleBBISel {
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MachineFunction &MF;
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TargetLowering &TLI;
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public:
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explicit SimpleBBISel(MachineFunction &mf, TargetLowering &tli)
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: MF(mf), TLI(tli) {};
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/// SelectBasicBlock - Try to convert a LLVM basic block into a
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/// MachineBasicBlock using simple instruction selection. Returns false if it
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/// is not able to do so.
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bool SelectBasicBlock(BasicBlock *BB, MachineBasicBlock *MBB);
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};
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} // end namespace llvm.
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#endif
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