Delete NEONMoveFix, now unused.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140773 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARM.h b/lib/Target/ARM/ARM.h
index 5556dc5a4dd97df79dd12695bf2826a5583b597c..16d0da3b8ac72c2921b7a3861b8e3beb7f91a683 100644 (file)
--- a/lib/Target/ARM/ARM.h
+++ b/lib/Target/ARM/ARM.h
@@ -41,7 +41,6 @@ FunctionPass *createARMLoadStoreOptimizationPass(bool PreAlloc = false);
 FunctionPass *createARMExpandPseudoPass();
 FunctionPass *createARMGlobalMergePass(const TargetLowering* tli);
 FunctionPass *createARMConstantIslandPass();
-FunctionPass *createNEONMoveFixPass();
 FunctionPass *createMLxExpansionPass();
 FunctionPass *createThumb2ITBlockPass();
 FunctionPass *createThumb2SizeReductionPass();

diff --git a/lib/Target/ARM/CMakeLists.txt b/lib/Target/ARM/CMakeLists.txt
index 0c703067c841cce88e93af9409d3c45bc5e8f70c..ef999a4aa71ee2bfd16bd1e6231b0ae846ee626f 100644 (file)
--- a/lib/Target/ARM/CMakeLists.txt
+++ b/lib/Target/ARM/CMakeLists.txt
@@ -41,7 +41,6 @@ add_llvm_target(ARMCodeGen
   ARMTargetMachine.cpp
   ARMTargetObjectFile.cpp
   MLxExpansionPass.cpp
-  NEONMoveFix.cpp
   Thumb1FrameLowering.cpp
   Thumb1InstrInfo.cpp
   Thumb1RegisterInfo.cpp

diff --git a/lib/Target/ARM/NEONMoveFix.cpp b/lib/Target/ARM/NEONMoveFix.cpp
deleted file mode 100644 (file)
index 843534b..0000000
--- a/lib/Target/ARM/NEONMoveFix.cpp
+++ /dev/null
@@ -1,147 +0,0 @@
-//===-- NEONMoveFix.cpp - Convert vfp reg-reg moves into neon ---*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "neon-mov-fix"
-#include "ARM.h"
-#include "ARMMachineFunctionInfo.h"
-#include "ARMInstrInfo.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-
-STATISTIC(NumVMovs, "Number of reg-reg moves converted");
-
-namespace {
-  struct NEONMoveFixPass : public MachineFunctionPass {
-    static char ID;
-    NEONMoveFixPass() : MachineFunctionPass(ID) {}
-
-    virtual bool runOnMachineFunction(MachineFunction &Fn);
-
-    virtual const char *getPassName() const {
-      return "NEON reg-reg move conversion";
-    }
-
-  private:
-    const TargetRegisterInfo *TRI;
-    const ARMBaseInstrInfo *TII;
-    bool isA8;
-
-    typedef DenseMap<unsigned, const MachineInstr*> RegMap;
-
-    bool InsertMoves(MachineBasicBlock &MBB);
-  };
-  char NEONMoveFixPass::ID = 0;
-}
-
-static bool inNEONDomain(unsigned Domain, bool isA8) {
-  return (Domain & ARMII::DomainNEON) ||
-    (isA8 && (Domain & ARMII::DomainNEONA8));
-}
-
-bool NEONMoveFixPass::InsertMoves(MachineBasicBlock &MBB) {
-  RegMap Defs;
-  bool Modified = false;
-
-  // Walk over MBB tracking the def points of the registers.
-  MachineBasicBlock::iterator MII = MBB.begin(), E = MBB.end();
-  MachineBasicBlock::iterator NextMII;
-  for (; MII != E; MII = NextMII) {
-    NextMII = llvm::next(MII);
-    MachineInstr *MI = &*MII;
-
-    if (MI->getOpcode() == ARM::VMOVD &&
-        !TII->isPredicated(MI)) {
-      unsigned SrcReg = MI->getOperand(1).getReg();
-      // If we do not find an instruction defining the reg, this means the
-      // register should be live-in for this BB. It's always to better to use
-      // NEON reg-reg moves.
-      unsigned Domain = ARMII::DomainNEON;
-      RegMap::iterator DefMI = Defs.find(SrcReg);
-      if (DefMI != Defs.end()) {
-        Domain = DefMI->second->getDesc().TSFlags & ARMII::DomainMask;
-        // Instructions in general domain are subreg accesses.
-        // Map them to NEON reg-reg moves.
-        if (Domain == ARMII::DomainGeneral)
-          Domain = ARMII::DomainNEON;
-      }
-
-      if (inNEONDomain(Domain, isA8)) {
-        // Convert VMOVD to VORRd
-        unsigned DestReg = MI->getOperand(0).getReg();
-
-        DEBUG({errs() << "vmov convert: "; MI->dump();});
-
-        // We need to preserve imp-defs / imp-uses here. Following passes may
-        // use the register scavenger to update liveness.
-        MachineInstr *NewMI =
-          AddDefaultPred(BuildMI(MBB, *MI, MI->getDebugLoc(),
-                                 TII->get(ARM::VORRd), DestReg)
-                         .addReg(SrcReg).addReg(SrcReg));
-        NewMI->copyImplicitOps(MI);
-        MBB.erase(MI);
-        MI = NewMI;
-
-        DEBUG({errs() << "        into: "; MI->dump();});
-
-        Modified = true;
-        ++NumVMovs;
-      } else {
-        assert((Domain & ARMII::DomainVFP) && "Invalid domain!");
-        // Do nothing.
-      }
-    }
-
-    // Update def information.
-    for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
-      const MachineOperand& MO = MI->getOperand(i);
-      if (!MO.isReg() || !MO.isDef())
-        continue;
-      unsigned MOReg = MO.getReg();
-
-      Defs[MOReg] = MI;
-      // Catch aliases as well.
-      for (const unsigned *R = TRI->getAliasSet(MOReg); *R; ++R)
-        Defs[*R] = MI;
-    }
-  }
-
-  return Modified;
-}
-
-bool NEONMoveFixPass::runOnMachineFunction(MachineFunction &Fn) {
-  ARMFunctionInfo *AFI = Fn.getInfo<ARMFunctionInfo>();
-  const TargetMachine &TM = Fn.getTarget();
-
-  if (AFI->isThumb1OnlyFunction())
-    return false;
-
-  TRI = TM.getRegisterInfo();
-  TII = static_cast<const ARMBaseInstrInfo*>(TM.getInstrInfo());
-  isA8 = TM.getSubtarget<ARMSubtarget>().isCortexA8();
-
-  bool Modified = false;
-  for (MachineFunction::iterator MFI = Fn.begin(), E = Fn.end(); MFI != E;
-       ++MFI) {
-    MachineBasicBlock &MBB = *MFI;
-    Modified |= InsertMoves(MBB);
-  }
-
-  return Modified;
-}
-
-/// createNEONMoveFixPass - Returns an instance of the NEON reg-reg moves fix
-/// pass.
-FunctionPass *llvm::createNEONMoveFixPass() {
-  return new NEONMoveFixPass();
-}