Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/lib/Target/AMDGPU/SIFixVGPRCopies.cpp

@@ -1,72 +0,0 @@
-//===-- SIFixVGPRCopies.cpp - Fix VGPR Copies after regalloc --------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-/// \file
-/// \brief Add implicit use of exec to vector register copies.
-///
-//===----------------------------------------------------------------------===//
-
-#include "AMDGPU.h"
-#include "AMDGPUSubtarget.h"
-#include "SIInstrInfo.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-
-using namespace llvm;
-
-#define DEBUG_TYPE "si-fix-vgpr-copies"
-
-namespace {
-
-class SIFixVGPRCopies : public MachineFunctionPass {
-public:
-  static char ID;
-
-public:
-  SIFixVGPRCopies() : MachineFunctionPass(ID) {
-    initializeSIFixVGPRCopiesPass(*PassRegistry::getPassRegistry());
-  }
-
-  bool runOnMachineFunction(MachineFunction &MF) override;
-
-  StringRef getPassName() const override { return "SI Fix VGPR copies"; }
-};
-
-} // End anonymous namespace.
-
-INITIALIZE_PASS(SIFixVGPRCopies, DEBUG_TYPE, "SI Fix VGPR copies", false, false)
-
-char SIFixVGPRCopies::ID = 0;
-
-char &llvm::SIFixVGPRCopiesID = SIFixVGPRCopies::ID;
-
-bool SIFixVGPRCopies::runOnMachineFunction(MachineFunction &MF) {
-  const SISubtarget &ST = MF.getSubtarget<SISubtarget>();
-  const SIRegisterInfo *TRI = ST.getRegisterInfo();
-  const SIInstrInfo *TII = ST.getInstrInfo();
-  bool Changed = false;
-
-  for (MachineBasicBlock &MBB : MF) {
-    for (MachineInstr &MI : MBB) {
-      switch (MI.getOpcode()) {
-      case AMDGPU::COPY:
-        if (TII->isVGPRCopy(MI) && !MI.readsRegister(AMDGPU::EXEC, TRI)) {
-          MI.addOperand(MF,
-                        MachineOperand::CreateReg(AMDGPU::EXEC, false, true));
-          DEBUG(dbgs() << "Add exec use to " << MI);
-          Changed = true;
-        }
-        break;
-      default:
-        break;
-      }
-    }
-  }
-
-  return Changed;
-}