From a059efa885f03e69895e3f6d15d48d57645e0340 Mon Sep 17 00:00:00 2001
From: Sam Parker <sam.parker@arm.com>
Date: Mon, 17 Jun 2019 09:13:10 +0000
Subject: [PATCH] [ARM] Remove ARMComputeBlockSize

Forgot to remove file!

llvm-svn: 363532
---
 llvm/lib/Target/ARM/ARMComputeBlockSize.cpp | 80 ---------------------
 1 file changed, 80 deletions(-)
 delete mode 100644 llvm/lib/Target/ARM/ARMComputeBlockSize.cpp

diff --git a/llvm/lib/Target/ARM/ARMComputeBlockSize.cpp b/llvm/lib/Target/ARM/ARMComputeBlockSize.cpp
deleted file mode 100644
index 828fc6568380..000000000000
--- a/llvm/lib/Target/ARM/ARMComputeBlockSize.cpp
+++ /dev/null
@@ -1,80 +0,0 @@
-//===--- ARMComputeBlockSize.cpp - Compute machine block sizes ------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#include "ARM.h"
-#include "ARMBaseInstrInfo.h"
-#include "ARMBasicBlockInfo.h"
-#include "ARMMachineFunctionInfo.h"
-#include "llvm/CodeGen/MachineBasicBlock.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/TargetSubtargetInfo.h"
-#include <vector>
-
-using namespace llvm;
-
-namespace llvm {
-
-// mayOptimizeThumb2Instruction - Returns true if optimizeThumb2Instructions
-// below may shrink MI.
-static bool
-mayOptimizeThumb2Instruction(const MachineInstr *MI) {
-  switch(MI->getOpcode()) {
-    // optimizeThumb2Instructions.
-    case ARM::t2LEApcrel:
-    case ARM::t2LDRpci:
-    // optimizeThumb2Branches.
-    case ARM::t2B:
-    case ARM::t2Bcc:
-    case ARM::tBcc:
-    // optimizeThumb2JumpTables.
-    case ARM::t2BR_JT:
-    case ARM::tBR_JTr:
-      return true;
-  }
-  return false;
-}
-
-void computeBlockSize(MachineFunction *MF, MachineBasicBlock *MBB,
-                      BasicBlockInfo &BBI) {
-  const ARMBaseInstrInfo *TII =
-    static_cast<const ARMBaseInstrInfo *>(MF->getSubtarget().getInstrInfo());
-  bool isThumb = MF->getInfo<ARMFunctionInfo>()->isThumbFunction();
-  BBI.Size = 0;
-  BBI.Unalign = 0;
-  BBI.PostAlign = 0;
-
-  for (MachineInstr &I : *MBB) {
-    BBI.Size += TII->getInstSizeInBytes(I);
-    // For inline asm, getInstSizeInBytes returns a conservative estimate.
-    // The actual size may be smaller, but still a multiple of the instr size.
-    if (I.isInlineAsm())
-      BBI.Unalign = isThumb ? 1 : 2;
-    // Also consider instructions that may be shrunk later.
-    else if (isThumb && mayOptimizeThumb2Instruction(&I))
-      BBI.Unalign = 1;
-  }
-
-  // tBR_JTr contains a .align 2 directive.
-  if (!MBB->empty() && MBB->back().getOpcode() == ARM::tBR_JTr) {
-    BBI.PostAlign = 2;
-    MBB->getParent()->ensureAlignment(2);
-  }
-}
-
-std::vector<BasicBlockInfo> computeAllBlockSizes(MachineFunction *MF) {
-  std::vector<BasicBlockInfo> BBInfo;
-  BBInfo.resize(MF->getNumBlockIDs());
-
-  for (MachineBasicBlock &MBB : *MF)
-    computeBlockSize(MF, &MBB, BBInfo[MBB.getNumber()]);
-
-  return BBInfo;
-}
-
-} // end namespace llvm