Rename "loop aligner" pass to "code placement optimization" pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71150 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 78 deletions

diff --git a/lib/CodeGen/LoopAligner.cpp b/lib/CodeGen/LoopAligner.cpp
deleted file mode 100644
index b67f5c3bf9..0000000000
--- a/lib/CodeGen/LoopAligner.cpp
+++ /dev/null
@@ -1,78 +0,0 @@
-//===-- LoopAligner.cpp - Loop aligner pass. ------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the pass that align loop headers to target specific
-// alignment boundary.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "loopalign"
-#include "llvm/CodeGen/MachineLoopInfo.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/Passes.h"
-#include "llvm/Target/TargetLowering.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Support/Compiler.h"
-#include "llvm/Support/Debug.h"
-using namespace llvm;
-
-namespace {
-  class LoopAligner : public MachineFunctionPass {
-  public:
-    static char ID;
-    LoopAligner() : MachineFunctionPass(&ID) {}
-
-    virtual bool runOnMachineFunction(MachineFunction &MF);
-    virtual const char *getPassName() const { return "Loop aligner"; }
-
-    virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-      AU.addRequired<MachineLoopInfo>();
-      AU.addPreserved<MachineLoopInfo>();
-      AU.addPreservedID(MachineDominatorsID);
-      MachineFunctionPass::getAnalysisUsage(AU);
-    }
-  };
-
-  char LoopAligner::ID = 0;
-} // end anonymous namespace
-
-FunctionPass *llvm::createLoopAlignerPass() { return new LoopAligner(); }
-
-bool LoopAligner::runOnMachineFunction(MachineFunction &MF) {
-  const MachineLoopInfo *MLI = &getAnalysis<MachineLoopInfo>();
-
-  if (MLI->empty())
-    return false;  // No loops.
-
-  const TargetLowering *TLI = MF.getTarget().getTargetLowering();
-  if (!TLI)
-    return false;
-
-  unsigned Align = TLI->getPrefLoopAlignment();
-  if (!Align)
-    return false;  // Don't care about loop alignment.
-
-  const Function *F = MF.getFunction();
-  if (F->hasFnAttr(Attribute::OptimizeForSize))
-    return false;
-
-  for (MachineFunction::iterator I = MF.begin(), E = MF.end(); I != E; ++I) {
-    MachineBasicBlock *MBB = I;
-    if (MLI->isLoopHeader(MBB)) {
-      MachineBasicBlock *PredBB = prior(I);
-      if (MLI->getLoopFor(MBB) == MLI->getLoopFor(PredBB))
-        // If previously BB is in the same loop, don't align this BB. We want
-        // to prevent adding noop's inside a loop.
-        continue;
-      MBB->setAlignment(Align);
-    }
-  }
-
-  return true;
-}