Reverted last commit

[oota-llvm.git] / lib / Target / ARM / ARMInstrInfo.h

diff --git a/lib/Target/ARM/ARMInstrInfo.h b/lib/Target/ARM/ARMInstrInfo.h
index e75a71d0e2632b1cc75937e9cedc3b3ec98bc0b0..94ade3b249a6823cf70108ec68c1110c46a52a89 100644 (file)
--- a/lib/Target/ARM/ARMInstrInfo.h
+++ b/lib/Target/ARM/ARMInstrInfo.h
@@ -1,9 +1,8 @@
-//===- ARMInstrInfo.h - ARM Instruction Information --------------*- C++ -*-===//
+//===-- ARMInstrInfo.h - ARM Instruction Information ------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the "Instituto Nokia de Tecnologia" and
-// is distributed under the University of Illinois Open Source
+// This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
@@ -12,30 +11,53 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef ARMINSTRUCTIONINFO_H
-#define ARMINSTRUCTIONINFO_H
+#ifndef LLVM_LIB_TARGET_ARM_ARMINSTRINFO_H
+#define LLVM_LIB_TARGET_ARM_ARMINSTRINFO_H
 
-#include "llvm/Target/TargetInstrInfo.h"
+#include "ARMBaseInstrInfo.h"
 #include "ARMRegisterInfo.h"
 
 namespace llvm {
+  class ARMSubtarget;
 
-class ARMInstrInfo : public TargetInstrInfo {
-  const ARMRegisterInfo RI;
+class ARMInstrInfo : public ARMBaseInstrInfo {
+  ARMRegisterInfo RI;
 public:
-  ARMInstrInfo();
+  explicit ARMInstrInfo(const ARMSubtarget &STI);
+
+  /// getNoopForMachoTarget - Return the noop instruction to use for a noop.
+  void getNoopForMachoTarget(MCInst &NopInst) const override;
+
+  // Return the non-pre/post incrementing version of 'Opc'. Return 0
+  // if there is not such an opcode.
+  unsigned getUnindexedOpcode(unsigned Opc) const override;
 
   /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
   /// such, whenever a client has an instance of instruction info, it should
   /// always be able to get register info as well (through this method).
   ///
-  virtual const MRegisterInfo &getRegisterInfo() const { return RI; }
+  const ARMRegisterInfo &getRegisterInfo() const override { return RI; }
 
-  /// Return true if the instruction is a register to register move and
-  /// leave the source and dest operands in the passed parameters.
+  /// Build the equivalent inputs of a REG_SEQUENCE for the given \p MI
+  /// and \p DefIdx.
+  /// \p [out] InputRegs of the equivalent REG_SEQUENCE. Each element of
+  /// the list is modeled as <Reg:SubReg, SubIdx>.
+  /// E.g., REG_SEQUENCE vreg1:sub1, sub0, vreg2, sub1 would produce
+  /// two elements:
+  /// - vreg1:sub1, sub0
+  /// - vreg2<:0>, sub1
   ///
-  virtual bool isMoveInstr(const MachineInstr &MI,
-                           unsigned &SrcReg, unsigned &DstReg) const;
+  /// \returns true if it is possible to build such an input sequence
+  /// with the pair \p MI, \p DefIdx. False otherwise.
+  ///
+  /// \pre MI.isRegSequenceLike().
+  bool getRegSequenceLikeInputs(
+      const MachineInstr &MI, unsigned DefIdx,
+      SmallVectorImpl<RegSubRegPairAndIdx> &InputRegs) const override;
+
+private:
+  void expandLoadStackGuard(MachineBasicBlock::iterator MI,
+                            Reloc::Model RM) const override;
 };
 
 }