[C++] Use 'nullptr'. Target edition.

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

diff --git a/lib/Target/SystemZ/SystemZInstrBuilder.h b/lib/Target/SystemZ/SystemZInstrBuilder.h
index 03f708feba19ef2f34eb06906afccbbee7d086a8..84196e94a5a64eb409c98be72384f9f4e13155a8 100644 (file)
--- a/lib/Target/SystemZ/SystemZInstrBuilder.h
+++ b/lib/Target/SystemZ/SystemZInstrBuilder.h
@@ -1,4 +1,4 @@
-//===- SystemZInstrBuilder.h - Functions to aid building  insts -*- C++ -*-===//
+//===-- SystemZInstrBuilder.h - Functions to aid building insts -*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -10,12 +10,6 @@
 // This file exposes functions that may be used with BuildMI from the
 // MachineInstrBuilder.h file to handle SystemZ'isms in a clean way.
 //
-// The BuildMem function may be used with the BuildMI function to add entire
-// memory references in a single, typed, function call.
-//
-// For reference, the order of operands for memory references is:
-// (Operand), Base, Displacement, Index.
-//
 //===----------------------------------------------------------------------===//
 
 #ifndef SYSTEMZINSTRBUILDER_H
@@ -23,105 +17,32 @@
 
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
 #include "llvm/CodeGen/PseudoSourceValue.h"
 
 namespace llvm {
 
-/// SystemZAddressMode - This struct holds a generalized full x86 address mode.
-/// The base register can be a frame index, which will eventually be replaced
-/// with R15 or R11 and Disp being offsetted accordingly.
-struct SystemZAddressMode {
-  enum {
-    RegBase,
-    FrameIndexBase
-  } BaseType;
-
-  union {
-    unsigned Reg;
-    int FrameIndex;
-  } Base;
-
-  unsigned IndexReg;
-  int32_t Disp;
-  GlobalValue *GV;
-
-  SystemZAddressMode() : BaseType(RegBase), IndexReg(0), Disp(0) {
-    Base.Reg = 0;
-  }
-};
-
-/// addDirectMem - This function is used to add a direct memory reference to the
-/// current instruction -- that is, a dereference of an address in a register,
-/// with no index or displacement.
-///
-static inline const MachineInstrBuilder &
-addDirectMem(const MachineInstrBuilder &MIB, unsigned Reg) {
-  // Because memory references are always represented with 3
-  // values, this adds: Reg, [0, NoReg] to the instruction.
-  return MIB.addReg(Reg).addImm(0).addReg(0);
-}
-
-static inline const MachineInstrBuilder &
-addOffset(const MachineInstrBuilder &MIB, int Offset) {
-  return MIB.addImm(Offset).addReg(0);
-}
-
-/// addRegOffset - This function is used to add a memory reference of the form
-/// [Reg + Offset], i.e., one with no or index, but with a
-/// displacement. An example is: 10(%r15).
-///
-static inline const MachineInstrBuilder &
-addRegOffset(const MachineInstrBuilder &MIB,
-             unsigned Reg, bool isKill, int Offset) {
-  return addOffset(MIB.addReg(Reg, getKillRegState(isKill)), Offset);
-}
-
-/// addRegReg - This function is used to add a memory reference of the form:
-/// [Reg + Reg].
-static inline const MachineInstrBuilder &
-addRegReg(const MachineInstrBuilder &MIB,
-            unsigned Reg1, bool isKill1, unsigned Reg2, bool isKill2) {
-  return MIB.addReg(Reg1, getKillRegState(isKill1)).addImm(0)
-    .addReg(Reg2, getKillRegState(isKill2));
-}
-
-static inline const MachineInstrBuilder &
-addFullAddress(const MachineInstrBuilder &MIB, const SystemZAddressMode &AM) {
-  if (AM.BaseType == SystemZAddressMode::RegBase)
-    MIB.addReg(AM.Base.Reg);
-  else if (AM.BaseType == SystemZAddressMode::FrameIndexBase)
-    MIB.addFrameIndex(AM.Base.FrameIndex);
-  else
-    assert(0);
-
-  return MIB.addImm(AM.Disp).addReg(AM.IndexReg);
-}
-
-/// addFrameReference - This function is used to add a reference to the base of
-/// an abstract object on the stack frame of the current function.  This
-/// reference has base register as the FrameIndex offset until it is resolved.
-/// This allows a constant offset to be specified as well...
-///
+/// Add a BDX memory reference for frame object FI to MIB.
 static inline const MachineInstrBuilder &
-addFrameReference(const MachineInstrBuilder &MIB, int FI, int Offset = 0) {
+addFrameReference(const MachineInstrBuilder &MIB, int FI) {
   MachineInstr *MI = MIB;
   MachineFunction &MF = *MI->getParent()->getParent();
-  MachineFrameInfo &MFI = *MF.getFrameInfo();
-  const TargetInstrDesc &TID = MI->getDesc();
+  MachineFrameInfo *MFFrame = MF.getFrameInfo();
+  const MCInstrDesc &MCID = MI->getDesc();
   unsigned Flags = 0;
-  if (TID.mayLoad())
+  if (MCID.mayLoad())
     Flags |= MachineMemOperand::MOLoad;
-  if (TID.mayStore())
+  if (MCID.mayStore())
     Flags |= MachineMemOperand::MOStore;
-  MachineMemOperand MMO(PseudoSourceValue::getFixedStack(FI),
-                        Flags,
-                        MFI.getObjectOffset(FI) + Offset,
-                        MFI.getObjectSize(FI),
-                        MFI.getObjectAlignment(FI));
-  return addOffset(MIB.addFrameIndex(FI), Offset)
-            .addMemOperand(MMO);
+  int64_t Offset = 0;
+  MachineMemOperand *MMO =
+    MF.getMachineMemOperand(MachinePointerInfo(
+                              PseudoSourceValue::getFixedStack(FI), Offset),
+                            Flags, MFFrame->getObjectSize(FI),
+                            MFFrame->getObjectAlignment(FI));
+  return MIB.addFrameIndex(FI).addImm(Offset).addReg(0).addMemOperand(MMO);
 }
 
-} // End llvm namespace
+} // end namespace llvm
 
 #endif