[llvm-mca] Rename Backend to Pipeline. NFC.

Summary:
This change renames the Backend and BackendPrinter to Pipeline and PipelinePrinter respectively. 
Variables and comments have also been updated to reflect this change.

The reason for this rename, is to be slightly more correct about what MCA is modeling.  MCA models a Pipeline, which implies some logical sequence of stages. 

Reviewers: andreadb, courbet, RKSimon

Reviewed By: andreadb, courbet

Subscribers: mgorny, javed.absar, tschuett, gbedwell, llvm-commits

Differential Revision: https://reviews.llvm.org/D48496

llvm-svn: 335496

1 files changed, 0 insertions, 27 deletions

diff --git a/llvm/tools/llvm-mca/BackendPrinter.cpp b/llvm/tools/llvm-mca/BackendPrinter.cpp
deleted file mode 100644
index 6fc78a5112b..00000000000
--- a/llvm/tools/llvm-mca/BackendPrinter.cpp
+++ /dev/null
@@ -1,27 +0,0 @@
-//===--------------------- BackendPrinter.cpp -------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-/// \file
-///
-/// This file implements the BackendPrinter interface.
-///
-//===----------------------------------------------------------------------===//
-
-#include "BackendPrinter.h"
-#include "View.h"
-#include "llvm/CodeGen/TargetSchedule.h"
-
-namespace mca {
-
-using namespace llvm;
-
-void BackendPrinter::printReport(llvm::raw_ostream &OS) const {
-  for (const auto &V : Views)
-    V->printView(OS);
-}
-} // namespace mca.