2008-11-07 18:59:00 +08:00
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//===-- XCoreISelLowering.h - XCore DAG Lowering Interface ------*- C++ -*-===//
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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 interfaces that XCore uses to lower LLVM code into a
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// selection DAG.
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//
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//===----------------------------------------------------------------------===//
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#ifndef XCOREISELLOWERING_H
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#define XCOREISELLOWERING_H
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2012-03-18 02:46:09 +08:00
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#include "XCore.h"
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2008-11-07 18:59:00 +08:00
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#include "llvm/CodeGen/SelectionDAG.h"
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#include "llvm/Target/TargetLowering.h"
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namespace llvm {
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2011-02-26 05:41:48 +08:00
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2008-11-07 18:59:00 +08:00
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// Forward delcarations
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class XCoreSubtarget;
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class XCoreTargetMachine;
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2011-02-26 05:41:48 +08:00
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2008-11-07 18:59:00 +08:00
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namespace XCoreISD {
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enum NodeType {
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// Start the numbering where the builtin ops and target ops leave off.
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2010-02-15 14:38:41 +08:00
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FIRST_NUMBER = ISD::BUILTIN_OP_END,
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2008-11-07 18:59:00 +08:00
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// Branch and link (call)
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BL,
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// pc relative address
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PCRelativeWrapper,
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// dp relative address
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DPRelativeWrapper,
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2011-02-26 05:41:48 +08:00
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2008-11-07 18:59:00 +08:00
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// cp relative address
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CPRelativeWrapper,
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2011-02-26 05:41:48 +08:00
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2008-11-07 18:59:00 +08:00
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// Store word to stack
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STWSP,
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// Corresponds to retsp instruction
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RETSP,
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2011-02-26 05:41:48 +08:00
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2008-11-07 18:59:00 +08:00
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// Corresponds to LADD instruction
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LADD,
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// Corresponds to LSUB instruction
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2010-02-23 21:25:07 +08:00
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LSUB,
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2010-03-10 21:27:10 +08:00
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// Corresponds to LMUL instruction
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LMUL,
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2010-03-10 19:41:08 +08:00
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// Corresponds to MACCU instruction
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MACCU,
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// Corresponds to MACCS instruction
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MACCS,
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2013-01-26 05:20:28 +08:00
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// Corresponds to CRC8 instruction
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CRC8,
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2010-02-23 21:25:07 +08:00
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// Jumptable branch.
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BR_JT,
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// Jumptable branch using long branches for each entry.
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2013-11-12 18:11:26 +08:00
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BR_JT32,
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2014-01-06 22:21:00 +08:00
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// Offset from frame pointer to the first (possible) on-stack argument
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FRAME_TO_ARGS_OFFSET,
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2014-01-06 22:21:07 +08:00
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// Exception handler return. The stack is restored to the first
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// followed by a jump to the second argument.
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EH_RETURN,
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2013-11-12 18:11:26 +08:00
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// Memory barrier.
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MEMBARRIER
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2008-11-07 18:59:00 +08:00
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};
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}
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//===--------------------------------------------------------------------===//
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// TargetLowering Implementation
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//===--------------------------------------------------------------------===//
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2011-02-26 05:41:48 +08:00
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class XCoreTargetLowering : public TargetLowering
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2008-11-07 18:59:00 +08:00
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{
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public:
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explicit XCoreTargetLowering(XCoreTargetMachine &TM);
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2013-10-11 18:26:29 +08:00
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using TargetLowering::isZExtFree;
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virtual bool isZExtFree(SDValue Val, EVT VT2) const;
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2010-03-11 22:58:56 +08:00
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virtual unsigned getJumpTableEncoding() const;
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2013-03-02 02:40:30 +08:00
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virtual MVT getScalarShiftAmountTy(EVT LHSTy) const { return MVT::i32; }
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2010-03-11 22:58:56 +08:00
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2008-11-07 18:59:00 +08:00
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/// LowerOperation - Provide custom lowering hooks for some operations.
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2010-04-17 23:26:15 +08:00
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virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
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2008-11-14 23:59:19 +08:00
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2008-12-01 19:39:25 +08:00
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/// ReplaceNodeResults - Replace the results of node with an illegal result
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/// type with new values built out of custom code.
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///
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virtual void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue>&Results,
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2010-04-17 23:26:15 +08:00
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SelectionDAG &DAG) const;
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2008-11-07 18:59:00 +08:00
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2011-02-26 05:41:48 +08:00
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/// getTargetNodeName - This method returns the name of a target specific
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2008-11-07 18:59:00 +08:00
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// DAG node.
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virtual const char *getTargetNodeName(unsigned Opcode) const;
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2011-02-26 05:41:48 +08:00
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2010-05-01 08:01:06 +08:00
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virtual MachineBasicBlock *
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EmitInstrWithCustomInserter(MachineInstr *MI,
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MachineBasicBlock *MBB) const;
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2008-11-07 18:59:00 +08:00
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virtual bool isLegalAddressingMode(const AddrMode &AM,
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2011-07-18 12:54:35 +08:00
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Type *Ty) const;
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2008-11-07 18:59:00 +08:00
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private:
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const XCoreTargetMachine &TM;
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const XCoreSubtarget &Subtarget;
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2011-02-26 05:41:48 +08:00
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2008-11-07 18:59:00 +08:00
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// Lower Operand helpers
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Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
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SDValue LowerCCCArguments(SDValue Chain,
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2009-09-02 16:44:58 +08:00
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CallingConv::ID CallConv,
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Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
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bool isVarArg,
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const SmallVectorImpl<ISD::InputArg> &Ins,
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2013-05-25 10:42:55 +08:00
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SDLoc dl, SelectionDAG &DAG,
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2010-04-17 23:26:15 +08:00
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SmallVectorImpl<SDValue> &InVals) const;
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Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
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SDValue LowerCCCCallTo(SDValue Chain, SDValue Callee,
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2009-09-02 16:44:58 +08:00
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CallingConv::ID CallConv, bool isVarArg,
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Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
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bool isTailCall,
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const SmallVectorImpl<ISD::OutputArg> &Outs,
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2010-07-07 23:54:55 +08:00
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const SmallVectorImpl<SDValue> &OutVals,
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Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
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const SmallVectorImpl<ISD::InputArg> &Ins,
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2013-05-25 10:42:55 +08:00
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SDLoc dl, SelectionDAG &DAG,
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2010-04-17 23:26:15 +08:00
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SmallVectorImpl<SDValue> &InVals) const;
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Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
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SDValue LowerCallResult(SDValue Chain, SDValue InFlag,
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2009-09-02 16:44:58 +08:00
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CallingConv::ID CallConv, bool isVarArg,
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Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
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const SmallVectorImpl<ISD::InputArg> &Ins,
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2013-05-25 10:42:55 +08:00
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SDLoc dl, SelectionDAG &DAG,
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2010-04-17 23:26:15 +08:00
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SmallVectorImpl<SDValue> &InVals) const;
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SDValue getReturnAddressFrameIndex(SelectionDAG &DAG) const;
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2010-04-15 09:51:59 +08:00
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SDValue getGlobalAddressWrapper(SDValue GA, const GlobalValue *GV,
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2010-04-17 23:26:15 +08:00
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SelectionDAG &DAG) const;
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2013-05-25 10:42:55 +08:00
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SDValue lowerLoadWordFromAlignedBasePlusOffset(SDLoc DL, SDValue Chain,
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2013-05-05 01:17:10 +08:00
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SDValue Base, int64_t Offset,
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SelectionDAG &DAG) const;
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2008-11-07 18:59:00 +08:00
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// Lower Operand specifics
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2010-04-17 23:26:15 +08:00
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SDValue LowerLOAD(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerSTORE(SDValue Op, SelectionDAG &DAG) const;
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2014-01-06 22:21:07 +08:00
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SDValue LowerEH_RETURN(SDValue Op, SelectionDAG &DAG) const;
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2010-04-17 23:26:15 +08:00
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SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerBR_JT(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerUMUL_LOHI(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerSMUL_LOHI(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
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2014-01-06 22:21:00 +08:00
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SDValue LowerFRAME_TO_ARGS_OFFSET(SDValue Op, SelectionDAG &DAG) const;
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2014-01-06 22:20:53 +08:00
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SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const;
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2011-09-06 21:37:06 +08:00
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SDValue LowerINIT_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerADJUST_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const;
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2013-01-26 05:20:28 +08:00
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SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const;
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2013-11-12 18:11:26 +08:00
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SDValue LowerATOMIC_FENCE(SDValue Op, SelectionDAG &DAG) const;
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2011-02-26 05:41:48 +08:00
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2008-11-07 18:59:00 +08:00
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// Inline asm support
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2011-06-30 01:53:29 +08:00
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std::pair<unsigned, const TargetRegisterClass*>
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getRegForInlineAsmConstraint(const std::string &Constraint,
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2013-06-23 02:37:38 +08:00
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MVT VT) const;
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2011-02-26 05:41:48 +08:00
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2008-11-07 18:59:00 +08:00
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// Expand specifics
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2010-04-17 23:26:15 +08:00
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SDValue TryExpandADDWithMul(SDNode *Op, SelectionDAG &DAG) const;
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SDValue ExpandADDSUB(SDNode *Op, SelectionDAG &DAG) const;
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2009-07-16 20:50:48 +08:00
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virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
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Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
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2010-03-10 00:07:47 +08:00
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virtual void computeMaskedBitsForTargetNode(const SDValue Op,
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APInt &KnownZero,
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APInt &KnownOne,
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const SelectionDAG &DAG,
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unsigned Depth = 0) const;
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Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
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virtual SDValue
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LowerFormalArguments(SDValue Chain,
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2009-09-02 16:44:58 +08:00
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CallingConv::ID CallConv,
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Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
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bool isVarArg,
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const SmallVectorImpl<ISD::InputArg> &Ins,
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2013-05-25 10:42:55 +08:00
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SDLoc dl, SelectionDAG &DAG,
|
2010-04-17 23:26:15 +08:00
|
|
|
SmallVectorImpl<SDValue> &InVals) const;
|
Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
|
|
|
|
|
|
|
|
virtual SDValue
|
2012-05-26 00:35:28 +08:00
|
|
|
LowerCall(TargetLowering::CallLoweringInfo &CLI,
|
2010-04-17 23:26:15 +08:00
|
|
|
SmallVectorImpl<SDValue> &InVals) const;
|
Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
|
|
|
|
|
|
|
|
virtual SDValue
|
|
|
|
|
LowerReturn(SDValue Chain,
|
2009-09-02 16:44:58 +08:00
|
|
|
CallingConv::ID CallConv, bool isVarArg,
|
Major calling convention code refactoring.
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.
This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.
This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.
llvm-svn: 78142
2009-08-05 09:29:28 +08:00
|
|
|
const SmallVectorImpl<ISD::OutputArg> &Outs,
|
2010-07-07 23:54:55 +08:00
|
|
|
const SmallVectorImpl<SDValue> &OutVals,
|
2013-05-25 10:42:55 +08:00
|
|
|
SDLoc dl, SelectionDAG &DAG) const;
|
2009-11-15 03:33:35 +08:00
|
|
|
|
|
|
|
|
virtual bool
|
2011-06-09 07:55:35 +08:00
|
|
|
CanLowerReturn(CallingConv::ID CallConv, MachineFunction &MF,
|
2012-07-19 08:11:40 +08:00
|
|
|
bool isVarArg,
|
2010-07-10 17:00:22 +08:00
|
|
|
const SmallVectorImpl<ISD::OutputArg> &ArgsFlags,
|
2010-07-07 06:19:37 +08:00
|
|
|
LLVMContext &Context) const;
|
2008-11-07 18:59:00 +08:00
|
|
|
};
|
|
|
|
|
}
|
|
|
|
|
|
|
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|
#endif // XCOREISELLOWERING_H
|
