1 files changed, 0 insertions, 97 deletions

diff --git a/contrib/llvm/lib/Target/WebAssembly/WebAssemblyArgumentMove.cpp b/contrib/llvm/lib/Target/WebAssembly/WebAssemblyArgumentMove.cpp
deleted file mode 100644
index 02f5cc6da77c..000000000000
--- a/contrib/llvm/lib/Target/WebAssembly/WebAssemblyArgumentMove.cpp
+++ /dev/null
@@ -1,97 +0,0 @@
-//===-- WebAssemblyArgumentMove.cpp - Argument instruction moving ---------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// This file moves ARGUMENT instructions after ScheduleDAG scheduling.
-///
-/// Arguments are really live-in registers, however, since we use virtual
-/// registers and LLVM doesn't support live-in virtual registers, we're
-/// currently making do with ARGUMENT instructions which are placed at the top
-/// of the entry block. The trick is to get them to *stay* at the top of the
-/// entry block.
-///
-/// The ARGUMENTS physical register keeps these instructions pinned in place
-/// during liveness-aware CodeGen passes, however one thing which does not
-/// respect this is the ScheduleDAG scheduler. This pass is therefore run
-/// immediately after that.
-///
-/// This is all hopefully a temporary solution until we find a better solution
-/// for describing the live-in nature of arguments.
-///
-//===----------------------------------------------------------------------===//
-
-#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"
-#include "WebAssembly.h"
-#include "WebAssemblyMachineFunctionInfo.h"
-#include "WebAssemblySubtarget.h"
-#include "WebAssemblyUtilities.h"
-#include "llvm/CodeGen/MachineBlockFrequencyInfo.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/Passes.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-
-#define DEBUG_TYPE "wasm-argument-move"
-
-namespace {
-class WebAssemblyArgumentMove final : public MachineFunctionPass {
-public:
-  static char ID; // Pass identification, replacement for typeid
-  WebAssemblyArgumentMove() : MachineFunctionPass(ID) {}
-
-  StringRef getPassName() const override { return "WebAssembly Argument Move"; }
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.setPreservesCFG();
-    AU.addPreserved<MachineBlockFrequencyInfo>();
-    AU.addPreservedID(MachineDominatorsID);
-    MachineFunctionPass::getAnalysisUsage(AU);
-  }
-
-  bool runOnMachineFunction(MachineFunction &MF) override;
-};
-} // end anonymous namespace
-
-char WebAssemblyArgumentMove::ID = 0;
-INITIALIZE_PASS(WebAssemblyArgumentMove, DEBUG_TYPE,
-                "Move ARGUMENT instructions for WebAssembly", false, false)
-
-FunctionPass *llvm::createWebAssemblyArgumentMove() {
-  return new WebAssemblyArgumentMove();
-}
-
-bool WebAssemblyArgumentMove::runOnMachineFunction(MachineFunction &MF) {
-  LLVM_DEBUG({
-    dbgs() << "********** Argument Move **********\n"
-           << "********** Function: " << MF.getName() << '\n';
-  });
-
-  bool Changed = false;
-  MachineBasicBlock &EntryMBB = MF.front();
-  MachineBasicBlock::iterator InsertPt = EntryMBB.end();
-
-  // Look for the first NonArg instruction.
-  for (MachineInstr &MI : EntryMBB) {
-    if (!WebAssembly::isArgument(MI.getOpcode())) {
-      InsertPt = MI;
-      break;
-    }
-  }
-
-  // Now move any argument instructions later in the block
-  // to before our first NonArg instruction.
-  for (MachineInstr &MI : llvm::make_range(InsertPt, EntryMBB.end())) {
-    if (WebAssembly::isArgument(MI.getOpcode())) {
-      EntryMBB.insert(InsertPt, MI.removeFromParent());
-      Changed = true;
-    }
-  }
-
-  return Changed;
-}