[mips] Stop caching the result of hasMips64(), isABI_O32(), isABI_N32(), and isABI_N6...

[oota-llvm.git] / lib / Target / Mips / MipsISelLowering.h

diff --git a/lib/Target/Mips/MipsISelLowering.h b/lib/Target/Mips/MipsISelLowering.h
index 20211146e24c6da236cc7ec1d4758617b7c7a4b9..e2ca629c7496ac974abde8fe4263af62f1ca5013 100644 (file)
--- a/lib/Target/Mips/MipsISelLowering.h
+++ b/lib/Target/Mips/MipsISelLowering.h
@@ -15,6 +15,7 @@
 #ifndef MipsISELLOWERING_H
 #define MipsISELLOWERING_H
 
+#include "MCTargetDesc/MipsBaseInfo.h"
 #include "Mips.h"
 #include "MipsSubtarget.h"
 #include "llvm/CodeGen/CallingConvLower.h"
@@ -33,6 +34,9 @@ namespace llvm {
       // Jump and link (call)
       JmpLink,
 
+      // MicroMIPS Jump and link (call)
+      JmpLinkMM,
+
       // Tail call
       TailCall,
 
@@ -69,10 +73,11 @@ namespace llvm {
       EH_RETURN,
 
       // Node used to extract integer from accumulator.
-      ExtractLOHI,
+      MFHI,
+      MFLO,
 
       // Node used to insert integers to accumulator.
-      InsertLOHI,
+      MTLOHI,
 
       // Mult nodes.
       Mult,
@@ -207,6 +212,7 @@ namespace llvm {
   class MipsFunctionInfo;
 
   class MipsTargetLowering : public TargetLowering  {
+    bool isMicroMips;
   public:
     explicit MipsTargetLowering(MipsTargetMachine &TM);
 
@@ -248,12 +254,72 @@ namespace llvm {
   protected:
     SDValue getGlobalReg(SelectionDAG &DAG, EVT Ty) const;
 
-    SDValue getAddrLocal(SDValue Op, SelectionDAG &DAG, bool HasMips64) const;
-
-    SDValue getAddrGlobal(SDValue Op, SelectionDAG &DAG, unsigned Flag) const;
-
-    SDValue getAddrGlobalLargeGOT(SDValue Op, SelectionDAG &DAG,
-                                  unsigned HiFlag, unsigned LoFlag) const;
+    // This method creates the following nodes, which are necessary for
+    // computing a local symbol's address:
+    //
+    // (add (load (wrapper $gp, %got(sym)), %lo(sym))
+    template <class NodeTy>
+    SDValue getAddrLocal(NodeTy *N, EVT Ty, SelectionDAG &DAG,
+                         bool IsN32OrN64) const {
+      SDLoc DL(N);
+      unsigned GOTFlag = IsN32OrN64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT;
+      SDValue GOT = DAG.getNode(MipsISD::Wrapper, DL, Ty, getGlobalReg(DAG, Ty),
+                                getTargetNode(N, Ty, DAG, GOTFlag));
+      SDValue Load = DAG.getLoad(Ty, DL, DAG.getEntryNode(), GOT,
+                                 MachinePointerInfo::getGOT(), false, false,
+                                 false, 0);
+      unsigned LoFlag = IsN32OrN64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO;
+      SDValue Lo = DAG.getNode(MipsISD::Lo, DL, Ty,
+                               getTargetNode(N, Ty, DAG, LoFlag));
+      return DAG.getNode(ISD::ADD, DL, Ty, Load, Lo);
+    }
+
+    // This method creates the following nodes, which are necessary for
+    // computing a global symbol's address:
+    //
+    // (load (wrapper $gp, %got(sym)))
+    template<class NodeTy>
+    SDValue getAddrGlobal(NodeTy *N, EVT Ty, SelectionDAG &DAG,
+                          unsigned Flag, SDValue Chain,
+                          const MachinePointerInfo &PtrInfo) const {
+      SDLoc DL(N);
+      SDValue Tgt = DAG.getNode(MipsISD::Wrapper, DL, Ty, getGlobalReg(DAG, Ty),
+                                getTargetNode(N, Ty, DAG, Flag));
+      return DAG.getLoad(Ty, DL, Chain, Tgt, PtrInfo, false, false, false, 0);
+    }
+
+    // This method creates the following nodes, which are necessary for
+    // computing a global symbol's address in large-GOT mode:
+    //
+    // (load (wrapper (add %hi(sym), $gp), %lo(sym)))
+    template<class NodeTy>
+    SDValue getAddrGlobalLargeGOT(NodeTy *N, EVT Ty, SelectionDAG &DAG,
+                                  unsigned HiFlag, unsigned LoFlag,
+                                  SDValue Chain,
+                                  const MachinePointerInfo &PtrInfo) const {
+      SDLoc DL(N);
+      SDValue Hi = DAG.getNode(MipsISD::Hi, DL, Ty,
+                               getTargetNode(N, Ty, DAG, HiFlag));
+      Hi = DAG.getNode(ISD::ADD, DL, Ty, Hi, getGlobalReg(DAG, Ty));
+      SDValue Wrapper = DAG.getNode(MipsISD::Wrapper, DL, Ty, Hi,
+                                    getTargetNode(N, Ty, DAG, LoFlag));
+      return DAG.getLoad(Ty, DL, Chain, Wrapper, PtrInfo, false, false, false,
+                         0);
+    }
+
+    // This method creates the following nodes, which are necessary for
+    // computing a symbol's address in non-PIC mode:
+    //
+    // (add %hi(sym), %lo(sym))
+    template<class NodeTy>
+    SDValue getAddrNonPIC(NodeTy *N, EVT Ty, SelectionDAG &DAG) const {
+      SDLoc DL(N);
+      SDValue Hi = getTargetNode(N, Ty, DAG, MipsII::MO_ABS_HI);
+      SDValue Lo = getTargetNode(N, Ty, DAG, MipsII::MO_ABS_LO);
+      return DAG.getNode(ISD::ADD, DL, Ty,
+                         DAG.getNode(MipsISD::Hi, DL, Ty, Hi),
+                         DAG.getNode(MipsISD::Lo, DL, Ty, Lo));
+    }
 
     /// This function fills Ops, which is the list of operands that will later
     /// be used when a function call node is created. It also generates
@@ -366,9 +432,31 @@ namespace llvm {
     // Subtarget Info
     const MipsSubtarget *Subtarget;
 
-    bool HasMips64, IsN64, IsO32;
+    bool hasMips64() const { return Subtarget->hasMips64(); }
+    bool isO32() const { return Subtarget->isABI_O32(); }
+    bool isN32() const { return Subtarget->isABI_N32(); }
+    bool isN64() const { return Subtarget->isABI_N64(); }
 
   private:
+    // Create a TargetGlobalAddress node.
+    SDValue getTargetNode(GlobalAddressSDNode *N, EVT Ty, SelectionDAG &DAG,
+                          unsigned Flag) const;
+
+    // Create a TargetExternalSymbol node.
+    SDValue getTargetNode(ExternalSymbolSDNode *N, EVT Ty, SelectionDAG &DAG,
+                          unsigned Flag) const;
+
+    // Create a TargetBlockAddress node.
+    SDValue getTargetNode(BlockAddressSDNode *N, EVT Ty, SelectionDAG &DAG,
+                          unsigned Flag) const;
+
+    // Create a TargetJumpTable node.
+    SDValue getTargetNode(JumpTableSDNode *N, EVT Ty, SelectionDAG &DAG,
+                          unsigned Flag) const;
+
+    // Create a TargetConstantPool node.
+    SDValue getTargetNode(ConstantPoolSDNode *N, EVT Ty, SelectionDAG &DAG,
+                          unsigned Flag) const;
 
     MipsCC::SpecialCallingConvType getSpecialCallingConv(SDValue Callee) const;
     // Lower Operand helpers