#ifndef LLVM_CODEGEN_FASTISEL_H
#define LLVM_CODEGEN_FASTISEL_H
-#include "llvm/BasicBlock.h"
#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallSet.h"
#include "llvm/CodeGen/SelectionDAGNodes.h"
namespace llvm {
+class AllocaInst;
class ConstantFP;
+class Instruction;
class MachineBasicBlock;
class MachineConstantPool;
class MachineFunction;
+class MachineFrameInfo;
+class MachineModuleInfo;
+class DwarfWriter;
class MachineRegisterInfo;
class TargetData;
class TargetInstrInfo;
DenseMap<const Value *, unsigned> LocalValueMap;
DenseMap<const Value *, unsigned> &ValueMap;
DenseMap<const BasicBlock *, MachineBasicBlock *> &MBBMap;
+ DenseMap<const AllocaInst *, int> &StaticAllocaMap;
+#ifndef NDEBUG
+ SmallSet<Instruction*, 8> &CatchInfoLost;
+#endif
MachineFunction &MF;
+ MachineModuleInfo *MMI;
+ DwarfWriter *DW;
MachineRegisterInfo &MRI;
+ MachineFrameInfo &MFI;
+ MachineConstantPool &MCP;
const TargetMachine &TM;
const TargetData &TD;
const TargetInstrInfo &TII;
const TargetLowering &TLI;
public:
+ /// startNewBlock - Set the current block, to which generated
+ /// machine instructions will be appended, and clear the local
+ /// CSE map.
+ ///
+ void startNewBlock(MachineBasicBlock *mbb) {
+ setCurrentBlock(mbb);
+ LocalValueMap.clear();
+ }
+
/// setCurrentBlock - Set the current block, to which generated
/// machine instructions will be appended.
///
///
bool SelectInstruction(Instruction *I);
+ /// SelectInstruction - Do "fast" instruction selection for the given
+ /// LLVM IR operator (Instruction or ConstantExpr), and append
+ /// generated machine instructions to the current block. Return true
+ /// if selection was successful.
+ ///
+ bool SelectOperator(User *I, unsigned Opcode);
+
/// TargetSelectInstruction - This method is called by target-independent
/// code when the normal FastISel process fails to select an instruction.
/// This gives targets a chance to emit code for anything that doesn't
/// be assigned the value for the given LLVM value.
unsigned getRegForValue(Value *V);
+ /// lookUpRegForValue - Look up the value to see if its value is already
+ /// cached in a register. It may be defined by instructions across blocks or
+ /// defined locally.
+ unsigned lookUpRegForValue(Value *V);
+
+ /// getRegForGEPIndex - This is a wrapper around getRegForValue that also
+ /// takes care of truncating or sign-extending the given getelementptr
+ /// index value.
+ unsigned getRegForGEPIndex(Value *V);
+
virtual ~FastISel();
protected:
FastISel(MachineFunction &mf,
+ MachineModuleInfo *mmi,
+ DwarfWriter *dw,
DenseMap<const Value *, unsigned> &vm,
- DenseMap<const BasicBlock *, MachineBasicBlock *> &bm);
+ DenseMap<const BasicBlock *, MachineBasicBlock *> &bm,
+ DenseMap<const AllocaInst *, int> &am
+#ifndef NDEBUG
+ , SmallSet<Instruction*, 8> &cil
+#endif
+ );
/// FastEmit_r - This method is called by target-independent code
/// to request that an instruction with the given type and opcode
uint64_t Imm);
/// FastEmitInst_extractsubreg - Emit a MachineInstr for an extract_subreg
- /// from a specified index of a superregister.
- unsigned FastEmitInst_extractsubreg(unsigned Op0, uint32_t Idx);
+ /// from a specified index of a superregister to a specified type.
+ unsigned FastEmitInst_extractsubreg(MVT::SimpleValueType RetVT,
+ unsigned Op0, uint32_t Idx);
+
+ /// FastEmitBranch - Emit an unconditional branch to the given block,
+ /// unless it is the immediate (fall-through) successor, and update
+ /// the CFG.
+ void FastEmitBranch(MachineBasicBlock *MBB);
void UpdateValueMap(Value* I, unsigned Reg);
unsigned createResultReg(const TargetRegisterClass *RC);
- virtual unsigned TargetSelectConstantPoolLoad(Constant* C,
- MachineConstantPool* MCP) {
+ /// TargetMaterializeConstant - Emit a constant in a register using
+ /// target-specific logic, such as constant pool loads.
+ virtual unsigned TargetMaterializeConstant(Constant* C) {
+ return 0;
+ }
+
+ /// TargetMaterializeAlloca - Emit an alloca address in a register using
+ /// target-specific logic.
+ virtual unsigned TargetMaterializeAlloca(AllocaInst* C) {
return 0;
}
private:
- bool SelectBinaryOp(Instruction *I, ISD::NodeType ISDOpcode);
+ bool SelectBinaryOp(User *I, ISD::NodeType ISDOpcode);
+
+ bool SelectGetElementPtr(User *I);
- bool SelectGetElementPtr(Instruction *I);
+ bool SelectCall(User *I);
- bool SelectBitCast(Instruction *I);
+ bool SelectBitCast(User *I);
- bool SelectCast(Instruction *I, ISD::NodeType Opcode);
+ bool SelectCast(User *I, ISD::NodeType Opcode);
};
}