1 files changed, 0 insertions, 159 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCVSXCopy.cpp b/llvm/lib/Target/PowerPC/PPCVSXCopy.cpp
deleted file mode 100644
index 794095cd4376..000000000000
--- a/llvm/lib/Target/PowerPC/PPCVSXCopy.cpp
+++ /dev/null
@@ -1,159 +0,0 @@
-//===-------------- PPCVSXCopy.cpp - VSX Copy Legalization ----------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// A pass which deals with the complexity of generating legal VSX register
-// copies to/from register classes which partially overlap with the VSX
-// register file.
-//
-//===----------------------------------------------------------------------===//
-
-#include "PPC.h"
-#include "PPCInstrInfo.h"
-#include "PPCTargetMachine.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/CodeGen/MachineMemOperand.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/Support/ErrorHandling.h"
-
-using namespace llvm;
-
-#define DEBUG_TYPE "ppc-vsx-copy"
-
-namespace {
-  // PPCVSXCopy pass - For copies between VSX registers and non-VSX registers
-  // (Altivec and scalar floating-point registers), we need to transform the
-  // copies into subregister copies with other restrictions.
-  struct PPCVSXCopy : public MachineFunctionPass {
-    static char ID;
-    PPCVSXCopy() : MachineFunctionPass(ID) {}
-
-    const TargetInstrInfo *TII;
-
-    bool IsRegInClass(unsigned Reg, const TargetRegisterClass *RC,
-                      MachineRegisterInfo &MRI) {
-      if (Register::isVirtualRegister(Reg)) {
-        return RC->hasSubClassEq(MRI.getRegClass(Reg));
-      } else if (RC->contains(Reg)) {
-        return true;
-      }
-
-      return false;
-    }
-
-    bool IsVSReg(unsigned Reg, MachineRegisterInfo &MRI) {
-      return IsRegInClass(Reg, &PPC::VSRCRegClass, MRI);
-    }
-
-    bool IsVRReg(unsigned Reg, MachineRegisterInfo &MRI) {
-      return IsRegInClass(Reg, &PPC::VRRCRegClass, MRI);
-    }
-
-    bool IsF8Reg(unsigned Reg, MachineRegisterInfo &MRI) {
-      return IsRegInClass(Reg, &PPC::F8RCRegClass, MRI);
-    }
-
-    bool IsVSFReg(unsigned Reg, MachineRegisterInfo &MRI) {
-      return IsRegInClass(Reg, &PPC::VSFRCRegClass, MRI);
-    }
-
-    bool IsVSSReg(unsigned Reg, MachineRegisterInfo &MRI) {
-      return IsRegInClass(Reg, &PPC::VSSRCRegClass, MRI);
-    }
-
-protected:
-    bool processBlock(MachineBasicBlock &MBB) {
-      bool Changed = false;
-
-      MachineRegisterInfo &MRI = MBB.getParent()->getRegInfo();
-      for (MachineInstr &MI : MBB) {
-        if (!MI.isFullCopy())
-          continue;
-
-        MachineOperand &DstMO = MI.getOperand(0);
-        MachineOperand &SrcMO = MI.getOperand(1);
-
-        if ( IsVSReg(DstMO.getReg(), MRI) &&
-            !IsVSReg(SrcMO.getReg(), MRI)) {
-          // This is a copy *to* a VSX register from a non-VSX register.
-          Changed = true;
-
-          const TargetRegisterClass *SrcRC = &PPC::VSLRCRegClass;
-          assert((IsF8Reg(SrcMO.getReg(), MRI) ||
-                  IsVSSReg(SrcMO.getReg(), MRI) ||
-                  IsVSFReg(SrcMO.getReg(), MRI)) &&
-                 "Unknown source for a VSX copy");
-
-          Register NewVReg = MRI.createVirtualRegister(SrcRC);
-          BuildMI(MBB, MI, MI.getDebugLoc(),
-                  TII->get(TargetOpcode::SUBREG_TO_REG), NewVReg)
-              .addImm(1) // add 1, not 0, because there is no implicit clearing
-                         // of the high bits.
-              .add(SrcMO)
-              .addImm(PPC::sub_64);
-
-          // The source of the original copy is now the new virtual register.
-          SrcMO.setReg(NewVReg);
-        } else if (!IsVSReg(DstMO.getReg(), MRI) &&
-                    IsVSReg(SrcMO.getReg(), MRI)) {
-          // This is a copy *from* a VSX register to a non-VSX register.
-          Changed = true;
-
-          const TargetRegisterClass *DstRC = &PPC::VSLRCRegClass;
-          assert((IsF8Reg(DstMO.getReg(), MRI) ||
-                  IsVSFReg(DstMO.getReg(), MRI) ||
-                  IsVSSReg(DstMO.getReg(), MRI)) &&
-                 "Unknown destination for a VSX copy");
-
-          // Copy the VSX value into a new VSX register of the correct subclass.
-          Register NewVReg = MRI.createVirtualRegister(DstRC);
-          BuildMI(MBB, MI, MI.getDebugLoc(), TII->get(TargetOpcode::COPY),
-                  NewVReg)
-              .add(SrcMO);
-
-          // Transform the original copy into a subregister extraction copy.
-          SrcMO.setReg(NewVReg);
-          SrcMO.setSubReg(PPC::sub_64);
-        }
-      }
-
-      return Changed;
-    }
-
-public:
-    bool runOnMachineFunction(MachineFunction &MF) override {
-      // If we don't have VSX on the subtarget, don't do anything.
-      const PPCSubtarget &STI = MF.getSubtarget<PPCSubtarget>();
-      if (!STI.hasVSX())
-        return false;
-      TII = STI.getInstrInfo();
-
-      bool Changed = false;
-
-      for (MachineBasicBlock &B : llvm::make_early_inc_range(MF))
-        if (processBlock(B))
-          Changed = true;
-
-      return Changed;
-    }
-
-    void getAnalysisUsage(AnalysisUsage &AU) const override {
-      MachineFunctionPass::getAnalysisUsage(AU);
-    }
-  };
-  } // end anonymous namespace
-
-INITIALIZE_PASS(PPCVSXCopy, DEBUG_TYPE,
-                "PowerPC VSX Copy Legalization", false, false)
-
-char PPCVSXCopy::ID = 0;
-FunctionPass*
-llvm::createPPCVSXCopyPass() { return new PPCVSXCopy(); }