[SystemZ] Use CLC and IPM to implement memcmp

[oota-llvm.git] / lib / Target / SystemZ / SystemZISelLowering.h

diff --git a/lib/Target/SystemZ/SystemZISelLowering.h b/lib/Target/SystemZ/SystemZISelLowering.h
index 129165df6a82cb96924328540f0ac2d9f9cb4817..0036ce84aa7ba938ffe6056e2bff58e21f1cca6e 100644 (file)
--- a/lib/Target/SystemZ/SystemZISelLowering.h
+++ b/lib/Target/SystemZ/SystemZISelLowering.h
@@ -68,10 +68,25 @@ namespace SystemZISD {
     // first input operands are GR128s.  The trailing numbers are the
     // widths of the second operand in bits.
     UMUL_LOHI64,
+    SDIVREM32,
     SDIVREM64,
     UDIVREM32,
     UDIVREM64,
 
+    // Use MVC to copy bytes from one memory location to another.
+    // The first operand is the target address, the second operand is the
+    // source address, and the third operand is the constant length.
+    // This isn't a memory opcode because we'd need to attach two
+    // MachineMemOperands rather than one.
+    MVC,
+
+    // Use CLC to compare two blocks of memory, with the same comments
+    // as for MVC.
+    CLC,
+
+    // Store the CC value in bits 29 and 28 of an integer.
+    IPM,
+
     // Wrappers around the inner loop of an 8- or 16-bit ATOMIC_SWAP or
     // ATOMIC_LOAD_<op>.
     //
@@ -118,17 +133,19 @@ public:
   virtual MVT getScalarShiftAmountTy(EVT LHSTy) const LLVM_OVERRIDE {
     return MVT::i32;
   }
-  virtual EVT getSetCCResultType(LLVMContext &, EVT) const {
+  virtual EVT getSetCCResultType(LLVMContext &, EVT) const LLVM_OVERRIDE {
     return MVT::i32;
   }
-  virtual bool isFMAFasterThanMulAndAdd(EVT) const LLVM_OVERRIDE {
-    return true;
-  }
-  virtual bool isFPImmLegal(const APFloat &Imm, EVT VT) const;
+  virtual bool isFMAFasterThanFMulAndFAdd(EVT VT) const LLVM_OVERRIDE;
+  virtual bool isFPImmLegal(const APFloat &Imm, EVT VT) const LLVM_OVERRIDE;
+  virtual bool isLegalAddressingMode(const AddrMode &AM, Type *Ty) const
+     LLVM_OVERRIDE;
+  virtual bool allowsUnalignedMemoryAccesses(EVT VT, bool *Fast) const
+    LLVM_OVERRIDE;
   virtual const char *getTargetNodeName(unsigned Opcode) const LLVM_OVERRIDE;
   virtual std::pair<unsigned, const TargetRegisterClass *>
     getRegForInlineAsmConstraint(const std::string &Constraint,
-                                 EVT VT) const LLVM_OVERRIDE;
+                                 MVT VT) const LLVM_OVERRIDE;
   virtual TargetLowering::ConstraintType
     getConstraintType(const std::string &Constraint) const LLVM_OVERRIDE;
   virtual TargetLowering::ConstraintWeight
@@ -202,6 +219,10 @@ private:
   // Implement EmitInstrWithCustomInserter for individual operation types.
   MachineBasicBlock *emitSelect(MachineInstr *MI,
                                 MachineBasicBlock *BB) const;
+  MachineBasicBlock *emitCondStore(MachineInstr *MI,
+                                   MachineBasicBlock *BB,
+                                   unsigned StoreOpcode, unsigned STOCOpcode,
+                                   bool Invert) const;
   MachineBasicBlock *emitExt128(MachineInstr *MI,
                                 MachineBasicBlock *MBB,
                                 bool ClearEven, unsigned SubReg) const;
@@ -216,6 +237,9 @@ private:
                                           unsigned BitSize) const;
   MachineBasicBlock *emitAtomicCmpSwapW(MachineInstr *MI,
                                         MachineBasicBlock *BB) const;
+  MachineBasicBlock *emitMemMemWrapper(MachineInstr *MI,
+                                       MachineBasicBlock *BB,
+                                       unsigned Opcode) const;
 };
 } // end namespace llvm