[SystemZ] Remove redundant frame MMOs

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

diff --git a/lib/Target/SystemZ/SystemZISelLowering.h b/lib/Target/SystemZ/SystemZISelLowering.h
index e408bd280aa02942c235d7bff2572ba0009d61cf..21b4d7245023adeaac797480920019e5eac4a506 100644 (file)
--- a/lib/Target/SystemZ/SystemZISelLowering.h
+++ b/lib/Target/SystemZ/SystemZISelLowering.h
@@ -16,6 +16,7 @@
 #define LLVM_TARGET_SystemZ_ISELLOWERING_H
 
 #include "SystemZ.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/CodeGen/SelectionDAG.h"
 #include "llvm/Target/TargetLowering.h"
 
@@ -67,6 +68,7 @@ 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,
@@ -124,10 +126,11 @@ public:
     return true;
   }
   virtual bool isFPImmLegal(const APFloat &Imm, EVT VT) const;
+  virtual bool allowsUnalignedMemoryAccesses(EVT VT, bool *Fast) const;
   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
@@ -189,9 +192,21 @@ private:
   SDValue lowerSTACKSAVE(SDValue Op, SelectionDAG &DAG) const;
   SDValue lowerSTACKRESTORE(SDValue Op, SelectionDAG &DAG) const;
 
+  // If the last instruction before MBBI in MBB was some form of COMPARE,
+  // try to replace it with a COMPARE AND BRANCH just before MBBI.
+  // CCMask and Target are the BRC-like operands for the branch.
+  // Return true if the change was made.
+  bool convertPrevCompareToBranch(MachineBasicBlock *MBB,
+                                  MachineBasicBlock::iterator MBBI,
+                                  unsigned CCMask,
+                                  MachineBasicBlock *Target) const;
+
   // Implement EmitInstrWithCustomInserter for individual operation types.
   MachineBasicBlock *emitSelect(MachineInstr *MI,
                                 MachineBasicBlock *BB) const;
+  MachineBasicBlock *emitCondStore(MachineInstr *MI,
+                                   MachineBasicBlock *BB,
+                                   unsigned StoreOpcode, bool Invert) const;
   MachineBasicBlock *emitExt128(MachineInstr *MI,
                                 MachineBasicBlock *MBB,
                                 bool ClearEven, unsigned SubReg) const;