[M68k] TableGen-erate SDNode descriptions (llvm#139449)

This consolidates node definitions into one place and enables automatic
node verification.

Part of llvm#119709.

Author: s-barannikov

llvm/lib/Target/M68k/CMakeLists.txt

@@ -6,6 +6,7 @@ tablegen(LLVM M68kGenGlobalISel.inc       -gen-global-isel)
 tablegen(LLVM M68kGenRegisterInfo.inc     -gen-register-info)
 tablegen(LLVM M68kGenRegisterBank.inc     -gen-register-bank)
 tablegen(LLVM M68kGenInstrInfo.inc        -gen-instr-info)
+tablegen(LLVM M68kGenSDNodeInfo.inc       -gen-sd-node-info)
 tablegen(LLVM M68kGenSubtargetInfo.inc    -gen-subtarget)
 tablegen(LLVM M68kGenMCCodeEmitter.inc    -gen-emitter)
 tablegen(LLVM M68kGenMCPseudoLowering.inc -gen-pseudo-lowering)
@@ -32,6 +33,7 @@ add_llvm_target(M68kCodeGen
   M68kMachineFunction.cpp
   M68kMCInstLower.cpp
   M68kRegisterInfo.cpp
+  M68kSelectionDAGInfo.cpp
   M68kSubtarget.cpp
   M68kTargetMachine.cpp
   M68kTargetObjectFile.cpp

llvm/lib/Target/M68k/M68kISelDAGToDAG.cpp

@@ -15,8 +15,8 @@
 
 #include "M68kMachineFunction.h"
 #include "M68kRegisterInfo.h"
+#include "M68kSelectionDAGInfo.h"
 #include "M68kTargetMachine.h"
-
 #include "llvm/CodeGen/MachineConstantPool.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"

llvm/lib/Target/M68k/M68kISelLowering.cpp

@@ -15,6 +15,7 @@
 #include "M68kISelLowering.h"
 #include "M68kCallingConv.h"
 #include "M68kMachineFunction.h"
+#include "M68kSelectionDAGInfo.h"
 #include "M68kSubtarget.h"
 #include "M68kTargetMachine.h"
 #include "M68kTargetObjectFile.h"
@@ -3641,64 +3642,6 @@ SDValue M68kTargetLowering::PerformDAGCombine(SDNode *N,
   return SDValue();
 }
 
-//===----------------------------------------------------------------------===//
-// M68kISD Node Names
-//===----------------------------------------------------------------------===//
-const char *M68kTargetLowering::getTargetNodeName(unsigned Opcode) const {
-  switch (Opcode) {
-  case M68kISD::CALL:
-    return "M68kISD::CALL";
-  case M68kISD::TAIL_CALL:
-    return "M68kISD::TAIL_CALL";
-  case M68kISD::RET:
-    return "M68kISD::RET";
-  case M68kISD::TC_RETURN:
-    return "M68kISD::TC_RETURN";
-  case M68kISD::ADD:
-    return "M68kISD::ADD";
-  case M68kISD::SUB:
-    return "M68kISD::SUB";
-  case M68kISD::ADDX:
-    return "M68kISD::ADDX";
-  case M68kISD::SUBX:
-    return "M68kISD::SUBX";
-  case M68kISD::SMUL:
-    return "M68kISD::SMUL";
-  case M68kISD::UMUL:
-    return "M68kISD::UMUL";
-  case M68kISD::OR:
-    return "M68kISD::OR";
-  case M68kISD::XOR:
-    return "M68kISD::XOR";
-  case M68kISD::AND:
-    return "M68kISD::AND";
-  case M68kISD::CMP:
-    return "M68kISD::CMP";
-  case M68kISD::BTST:
-    return "M68kISD::BTST";
-  case M68kISD::SELECT:
-    return "M68kISD::SELECT";
-  case M68kISD::CMOV:
-    return "M68kISD::CMOV";
-  case M68kISD::BRCOND:
-    return "M68kISD::BRCOND";
-  case M68kISD::SETCC:
-    return "M68kISD::SETCC";
-  case M68kISD::SETCC_CARRY:
-    return "M68kISD::SETCC_CARRY";
-  case M68kISD::GLOBAL_BASE_REG:
-    return "M68kISD::GLOBAL_BASE_REG";
-  case M68kISD::Wrapper:
-    return "M68kISD::Wrapper";
-  case M68kISD::WrapperPC:
-    return "M68kISD::WrapperPC";
-  case M68kISD::SEG_ALLOCA:
-    return "M68kISD::SEG_ALLOCA";
-  default:
-    return NULL;
-  }
-}
-
 CCAssignFn *M68kTargetLowering::getCCAssignFn(CallingConv::ID CC, bool Return,
                                               bool IsVarArg) const {
   if (Return)

llvm/lib/Target/M68k/M68kISelLowering.h

@@ -25,77 +25,6 @@
 #include <deque>
 
 namespace llvm {
-namespace M68kISD {
-
-/// M68k Specific DAG nodes
-enum NodeType {
-  /// Start the numbering from where ISD NodeType finishes.
-  FIRST_NUMBER = ISD::BUILTIN_OP_END,
-
-  CALL,
-  RET,
-  TAIL_CALL,
-  TC_RETURN,
-
-  /// M68k compare and logical compare instructions. Subtracts the source
-  /// operand from the destination data register and sets the condition
-  /// codes according to the result. Immediate always goes first.
-  CMP,
-
-  /// M68k bit-test instructions.
-  BTST,
-
-  /// M68k Select
-  SELECT,
-
-  /// M68k SetCC. Operand 0 is condition code, and operand 1 is the CCR
-  /// operand, usually produced by a CMP instruction.
-  SETCC,
-
-  // Same as SETCC except it's materialized with a subx and the value is all
-  // one's or all zero's.
-  SETCC_CARRY, // R = carry_bit ? ~0 : 0
-
-  /// M68k conditional moves. Operand 0 and operand 1 are the two values
-  /// to select from. Operand 2 is the condition code, and operand 3 is the
-  /// flag operand produced by a CMP or TEST instruction. It also writes a
-  /// flag result.
-  CMOV,
-
-  /// M68k conditional branches. Operand 0 is the chain operand, operand 1
-  /// is the block to branch if condition is true, operand 2 is the
-  /// condition code, and operand 3 is the flag operand produced by a CMP
-  /// or TEST instruction.
-  BRCOND,
-
-  // Arithmetic operations with CCR results.
-  ADD,
-  SUB,
-  ADDX,
-  SUBX,
-  SMUL,
-  UMUL,
-  OR,
-  XOR,
-  AND,
-
-  // GlobalBaseReg,
-  GLOBAL_BASE_REG,
-
-  /// A wrapper node for TargetConstantPool,
-  /// TargetExternalSymbol, and TargetGlobalAddress.
-  Wrapper,
-
-  /// Special wrapper used under M68k PIC mode for PC
-  /// relative displacements.
-  WrapperPC,
-
-  // For allocating variable amounts of stack space when using
-  // segmented stacks. Check if the current stacklet has enough space, and
-  // falls back to heap allocation if not.
-  SEG_ALLOCA,
-};
-} // namespace M68kISD
 
 /// Define some predicates that are used for node matching.
 namespace M68k {
@@ -124,8 +53,6 @@ class M68kTargetLowering : public TargetLowering {
   static const M68kTargetLowering *create(const M68kTargetMachine &TM,
                                           const M68kSubtarget &STI);
 
-  const char *getTargetNodeName(unsigned Opcode) const override;
-
   /// Return the value type to use for ISD::SETCC.
   EVT getSetCCResultType(const DataLayout &DL, LLVMContext &Context,
                          EVT VT) const override;

llvm/lib/Target/M68k/M68kInstrInfo.td

@@ -112,9 +112,18 @@ def MxRet   : SDNode<"M68kISD::RET", MxSDT_Ret,
 def MxTCRet : SDNode<"M68kISD::TC_RETURN", MxSDT_TCRet,
                      [SDNPHasChain,  SDNPOptInGlue, SDNPVariadic]>;
 
+def MxGlobalBaseReg : SDNode<"M68kISD::GLOBAL_BASE_REG",
+                             SDTypeProfile<1, 0, [SDTCisVT<0, iPTR>]>>;
+
+// A wrapper node for TargetConstantPool,
+// TargetExternalSymbol, and TargetGlobalAddress.
 def MxWrapper   : SDNode<"M68kISD::Wrapper",   MxSDT_Wrapper>;
+
+// Special wrapper used under M68k PIC mode for PC
+// relative displacements.
 def MxWrapperPC : SDNode<"M68kISD::WrapperPC", MxSDT_Wrapper>;
 
+// Arithmetic operations with CCR results.
 def MxAdd  : SDNode<"M68kISD::ADD",  MxSDT_BiArithCCROut, [SDNPCommutative]>;
 def MxSub  : SDNode<"M68kISD::SUB",  MxSDT_BiArithCCROut>;
 def MxOr   : SDNode<"M68kISD::OR",   MxSDT_BiArithCCROut, [SDNPCommutative]>;
@@ -127,15 +136,37 @@ def MxSubX : SDNode<"M68kISD::SUBX", MxSDT_BiArithCCRInOut>;
 def MxSMul : SDNode<"M68kISD::SMUL", MxSDT_BiArithCCROut, [SDNPCommutative]>;
 def MxUMul : SDNode<"M68kISD::UMUL", MxSDT_BiArithCCROut, [SDNPCommutative]>;
 
+// M68k compare and logical compare instructions. Subtracts the source
+// operand from the destination data register and sets the condition
+// codes according to the result. Immediate always goes first.
 def MxCmp     : SDNode<"M68kISD::CMP", MxSDT_CmpTest>;
+
+// M68k bit-test instructions.
 def MxBtst    : SDNode<"M68kISD::BTST", MxSDT_CmpTest>;
 
+// M68k conditional moves. Operand 0 and operand 1 are the two values
+// to select from. Operand 2 is the condition code, and operand 3 is the
+// flag operand produced by a CMP or TEST instruction. It also writes a
+// flag result.
 def MxCmov    : SDNode<"M68kISD::CMOV",        MxSDT_Cmov>;
+
+// M68k conditional branches. Operand 0 is the chain operand, operand 1
+// is the block to branch if condition is true, operand 2 is the
+// condition code, and operand 3 is the flag operand produced by a CMP
+// or TEST instruction.
 def MxBrCond  : SDNode<"M68kISD::BRCOND",      MxSDT_BrCond, [SDNPHasChain]>;
+
+// M68k SetCC. Operand 0 is condition code, and operand 1 is the CCR
+// operand, usually produced by a CMP instruction.
 def MxSetCC   : SDNode<"M68kISD::SETCC",       MxSDT_SetCC>;
-def MxSetCC_C : SDNode<"M68kISD::SETCC_CARRY", MxSDT_SetCC_C>;
 
+// Same as SETCC except it's materialized with a subx and the value is all
+// one's or all zero's.
+def MxSetCC_C : SDNode<"M68kISD::SETCC_CARRY", MxSDT_SetCC_C>;
 
+// For allocating variable amounts of stack space when using
+// segmented stacks. Check if the current stacklet has enough space, and
+// falls back to heap allocation if not.
 def MxSegAlloca : SDNode<"M68kISD::SEG_ALLOCA", MxSDT_SEG_ALLOCA,
                          [SDNPHasChain]>;
 

llvm/lib/Target/M68k/M68kSelectionDAGInfo.cpp

@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "M68kSelectionDAGInfo.h"
+
+#define GET_SDNODE_DESC
+#include "M68kGenSDNodeInfo.inc"
+
+using namespace llvm;
+
+M68kSelectionDAGInfo::M68kSelectionDAGInfo()
+    : SelectionDAGGenTargetInfo(M68kGenSDNodeInfo) {}
+
+M68kSelectionDAGInfo::~M68kSelectionDAGInfo() = default;

llvm/lib/Target/M68k/M68kSelectionDAGInfo.h

@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_M68K_M68KSELECTIONDAGINFO_H
+#define LLVM_LIB_TARGET_M68K_M68KSELECTIONDAGINFO_H
+
+#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
+
+#define GET_SDNODE_ENUM
+#include "M68kGenSDNodeInfo.inc"
+
+namespace llvm {
+
+class M68kSelectionDAGInfo : public SelectionDAGGenTargetInfo {
+public:
+  M68kSelectionDAGInfo();
+
+  ~M68kSelectionDAGInfo() override;
+};
+
+} // namespace llvm
+
+#endif // LLVM_LIB_TARGET_M68K_M68KSELECTIONDAGINFO_H

llvm/lib/Target/M68k/M68kSubtarget.cpp

@@ -15,12 +15,11 @@
 #include "GISel/M68kCallLowering.h"
 #include "GISel/M68kLegalizerInfo.h"
 #include "GISel/M68kRegisterBankInfo.h"
-
 #include "M68k.h"
 #include "M68kMachineFunction.h"
 #include "M68kRegisterInfo.h"
+#include "M68kSelectionDAGInfo.h"
 #include "M68kTargetMachine.h"
-
 #include "llvm/CodeGen/MachineJumpTableInfo.h"
 #include "llvm/IR/Attributes.h"
 #include "llvm/IR/Function.h"
@@ -50,10 +49,12 @@ void M68kSubtarget::anchor() {}
 
 M68kSubtarget::M68kSubtarget(const Triple &TT, StringRef CPU, StringRef FS,
                              const M68kTargetMachine &TM)
-    : M68kGenSubtargetInfo(TT, CPU, /*TuneCPU*/ CPU, FS), TM(TM), TSInfo(),
+    : M68kGenSubtargetInfo(TT, CPU, /*TuneCPU*/ CPU, FS), TM(TM),
       InstrInfo(initializeSubtargetDependencies(CPU, TT, FS, TM)),
       FrameLowering(*this, this->getStackAlignment()), TLInfo(TM, *this),
       TargetTriple(TT) {
+  TSInfo = std::make_unique<M68kSelectionDAGInfo>();
+
   CallLoweringInfo.reset(new M68kCallLowering(*getTargetLowering()));
   Legalizer.reset(new M68kLegalizerInfo(*this));
 
@@ -62,6 +63,12 @@ M68kSubtarget::M68kSubtarget(const Triple &TT, StringRef CPU, StringRef FS,
   InstSelector.reset(createM68kInstructionSelector(TM, *this, *RBI));
 }
 
+M68kSubtarget::~M68kSubtarget() = default;
+
+const SelectionDAGTargetInfo *M68kSubtarget::getSelectionDAGInfo() const {
+  return TSInfo.get();
+}
+
 const CallLowering *M68kSubtarget::getCallLowering() const {
   return CallLoweringInfo.get();
 }

llvm/lib/Target/M68k/M68kSubtarget.h

@@ -22,7 +22,6 @@
 #include "llvm/CodeGen/GlobalISel/InstructionSelector.h"
 #include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
 #include "llvm/CodeGen/RegisterBankInfo.h"
-#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
 #include "llvm/CodeGen/TargetSubtargetInfo.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/MC/MCInstrItineraries.h"
@@ -63,7 +62,6 @@ class M68kSubtarget : public M68kGenSubtargetInfo {
 
   const M68kTargetMachine &TM;
 
-  SelectionDAGTargetInfo TSInfo;
   M68kInstrInfo InstrInfo;
   M68kFrameLowering FrameLowering;
   M68kTargetLowering TLInfo;
@@ -80,6 +78,8 @@ class M68kSubtarget : public M68kGenSubtargetInfo {
   M68kSubtarget(const Triple &TT, StringRef CPU, StringRef FS,
                 const M68kTargetMachine &_TM);
 
+  ~M68kSubtarget() override;
+
   /// Parses features string setting specified subtarget options.  Definition
   /// of function is auto generated by tblgen.
   void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
@@ -148,10 +148,6 @@ class M68kSubtarget : public M68kGenSubtargetInfo {
                                                  StringRef FS,
                                                  const M68kTargetMachine &TM);
 
-  const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
-    return &TSInfo;
-  }
-
   const M68kInstrInfo *getInstrInfo() const override { return &InstrInfo; }
 
   const M68kFrameLowering *getFrameLowering() const override {
@@ -171,13 +167,17 @@ class M68kSubtarget : public M68kGenSubtargetInfo {
   }
 
 protected:
+  // SelectionDAGISel related APIs.
+  std::unique_ptr<const SelectionDAGTargetInfo> TSInfo;
+
   // GlobalISel related APIs.
   std::unique_ptr<CallLowering> CallLoweringInfo;
   std::unique_ptr<InstructionSelector> InstSelector;
   std::unique_ptr<LegalizerInfo> Legalizer;
   std::unique_ptr<RegisterBankInfo> RegBankInfo;
 
 public:
+  const SelectionDAGTargetInfo *getSelectionDAGInfo() const override;
   const CallLowering *getCallLowering() const override;
   InstructionSelector *getInstructionSelector() const override;
   const LegalizerInfo *getLegalizerInfo() const override;