Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 283 deletions

diff --git a/gnu/llvm/lib/Target/PowerPC/PPCBranchSelector.cpp b/gnu/llvm/lib/Target/PowerPC/PPCBranchSelector.cpp
deleted file mode 100644
index 0d1bb9297bc..00000000000
--- a/gnu/llvm/lib/Target/PowerPC/PPCBranchSelector.cpp
+++ /dev/null
@@ -1,283 +0,0 @@
-//===-- PPCBranchSelector.cpp - Emit long conditional branches ------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains a pass that scans a machine function to determine which
-// conditional branches need more than 16 bits of displacement to reach their
-// target basic block.  It does this in two passes; a calculation of basic block
-// positions pass, and a branch pseudo op to machine branch opcode pass.  This
-// pass should be run last, just before the assembly printer.
-//
-//===----------------------------------------------------------------------===//
-
-#include "MCTargetDesc/PPCPredicates.h"
-#include "PPC.h"
-#include "PPCInstrBuilder.h"
-#include "PPCInstrInfo.h"
-#include "PPCSubtarget.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/TargetSubtargetInfo.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Target/TargetMachine.h"
-using namespace llvm;
-
-#define DEBUG_TYPE "ppc-branch-select"
-
-STATISTIC(NumExpanded, "Number of branches expanded to long format");
-
-namespace llvm {
-  void initializePPCBSelPass(PassRegistry&);
-}
-
-namespace {
-  struct PPCBSel : public MachineFunctionPass {
-    static char ID;
-    PPCBSel() : MachineFunctionPass(ID) {
-      initializePPCBSelPass(*PassRegistry::getPassRegistry());
-    }
-
-    // The sizes of the basic blocks in the function (the first
-    // element of the pair); the second element of the pair is the amount of the
-    // size that is due to potential padding.
-    std::vector<std::pair<unsigned, unsigned>> BlockSizes;
-
-    bool runOnMachineFunction(MachineFunction &Fn) override;
-
-    MachineFunctionProperties getRequiredProperties() const override {
-      return MachineFunctionProperties().set(
-          MachineFunctionProperties::Property::NoVRegs);
-    }
-
-    StringRef getPassName() const override { return "PowerPC Branch Selector"; }
-  };
-  char PPCBSel::ID = 0;
-}
-
-INITIALIZE_PASS(PPCBSel, "ppc-branch-select", "PowerPC Branch Selector",
-                false, false)
-
-/// createPPCBranchSelectionPass - returns an instance of the Branch Selection
-/// Pass
-///
-FunctionPass *llvm::createPPCBranchSelectionPass() {
-  return new PPCBSel();
-}
-
-bool PPCBSel::runOnMachineFunction(MachineFunction &Fn) {
-  const PPCInstrInfo *TII =
-      static_cast<const PPCInstrInfo *>(Fn.getSubtarget().getInstrInfo());
-  // Give the blocks of the function a dense, in-order, numbering.
-  Fn.RenumberBlocks();
-  BlockSizes.resize(Fn.getNumBlockIDs());
-
-  auto GetAlignmentAdjustment =
-    [](MachineBasicBlock &MBB, unsigned Offset) -> unsigned {
-    unsigned Align = MBB.getAlignment();
-    if (!Align)
-      return 0;
-
-    unsigned AlignAmt = 1 << Align;
-    unsigned ParentAlign = MBB.getParent()->getAlignment();
-
-    if (Align <= ParentAlign)
-      return OffsetToAlignment(Offset, AlignAmt);
-
-    // The alignment of this MBB is larger than the function's alignment, so we
-    // can't tell whether or not it will insert nops. Assume that it will.
-    return AlignAmt + OffsetToAlignment(Offset, AlignAmt);
-  };
-
-  // We need to be careful about the offset of the first block in the function
-  // because it might not have the function's alignment. This happens because,
-  // under the ELFv2 ABI, for functions which require a TOC pointer, we add a
-  // two-instruction sequence to the start of the function.
-  // Note: This needs to be synchronized with the check in
-  // PPCLinuxAsmPrinter::EmitFunctionBodyStart.
-  unsigned InitialOffset = 0;
-  if (Fn.getSubtarget<PPCSubtarget>().isELFv2ABI() &&
-      !Fn.getRegInfo().use_empty(PPC::X2))
-    InitialOffset = 8;
-
-  // Measure each MBB and compute a size for the entire function.
-  unsigned FuncSize = InitialOffset;
-  for (MachineFunction::iterator MFI = Fn.begin(), E = Fn.end(); MFI != E;
-       ++MFI) {
-    MachineBasicBlock *MBB = &*MFI;
-
-    // The end of the previous block may have extra nops if this block has an
-    // alignment requirement.
-    if (MBB->getNumber() > 0) {
-      unsigned AlignExtra = GetAlignmentAdjustment(*MBB, FuncSize);
-
-      auto &BS = BlockSizes[MBB->getNumber()-1];
-      BS.first += AlignExtra;
-      BS.second = AlignExtra;
-
-      FuncSize += AlignExtra;
-    }
-
-    unsigned BlockSize = 0;
-    for (MachineInstr &MI : *MBB)
-      BlockSize += TII->getInstSizeInBytes(MI);
-
-    BlockSizes[MBB->getNumber()].first = BlockSize;
-    FuncSize += BlockSize;
-  }
-
-  // If the entire function is smaller than the displacement of a branch field,
-  // we know we don't need to shrink any branches in this function.  This is a
-  // common case.
-  if (FuncSize < (1 << 15)) {
-    BlockSizes.clear();
-    return false;
-  }
-
-  // For each conditional branch, if the offset to its destination is larger
-  // than the offset field allows, transform it into a long branch sequence
-  // like this:
-  //   short branch:
-  //     bCC MBB
-  //   long branch:
-  //     b!CC $PC+8
-  //     b MBB
-  //
-  bool MadeChange = true;
-  bool EverMadeChange = false;
-  while (MadeChange) {
-    // Iteratively expand branches until we reach a fixed point.
-    MadeChange = false;
-
-    for (MachineFunction::iterator MFI = Fn.begin(), E = Fn.end(); MFI != E;
-         ++MFI) {
-      MachineBasicBlock &MBB = *MFI;
-      unsigned MBBStartOffset = 0;
-      for (MachineBasicBlock::iterator I = MBB.begin(), E = MBB.end();
-           I != E; ++I) {
-        MachineBasicBlock *Dest = nullptr;
-        if (I->getOpcode() == PPC::BCC && !I->getOperand(2).isImm())
-          Dest = I->getOperand(2).getMBB();
-        else if ((I->getOpcode() == PPC::BC || I->getOpcode() == PPC::BCn) &&
-                 !I->getOperand(1).isImm())
-          Dest = I->getOperand(1).getMBB();
-        else if ((I->getOpcode() == PPC::BDNZ8 || I->getOpcode() == PPC::BDNZ ||
-                  I->getOpcode() == PPC::BDZ8  || I->getOpcode() == PPC::BDZ) &&
-                 !I->getOperand(0).isImm())
-          Dest = I->getOperand(0).getMBB();
-
-        if (!Dest) {
-          MBBStartOffset += TII->getInstSizeInBytes(*I);
-          continue;
-        }
-
-        // Determine the offset from the current branch to the destination
-        // block.
-        int BranchSize;
-        if (Dest->getNumber() <= MBB.getNumber()) {
-          // If this is a backwards branch, the delta is the offset from the
-          // start of this block to this branch, plus the sizes of all blocks
-          // from this block to the dest.
-          BranchSize = MBBStartOffset;
-
-          for (unsigned i = Dest->getNumber(), e = MBB.getNumber(); i != e; ++i)
-            BranchSize += BlockSizes[i].first;
-        } else {
-          // Otherwise, add the size of the blocks between this block and the
-          // dest to the number of bytes left in this block.
-          BranchSize = -MBBStartOffset;
-
-          for (unsigned i = MBB.getNumber(), e = Dest->getNumber(); i != e; ++i)
-            BranchSize += BlockSizes[i].first;
-        }
-
-        // If this branch is in range, ignore it.
-        if (isInt<16>(BranchSize)) {
-          MBBStartOffset += 4;
-          continue;
-        }
-
-        // Otherwise, we have to expand it to a long branch.
-        MachineInstr &OldBranch = *I;
-        DebugLoc dl = OldBranch.getDebugLoc();
-
-        if (I->getOpcode() == PPC::BCC) {
-          // The BCC operands are:
-          // 0. PPC branch predicate
-          // 1. CR register
-          // 2. Target MBB
-          PPC::Predicate Pred = (PPC::Predicate)I->getOperand(0).getImm();
-          unsigned CRReg = I->getOperand(1).getReg();
-
-          // Jump over the uncond branch inst (i.e. $PC+8) on opposite condition.
-          BuildMI(MBB, I, dl, TII->get(PPC::BCC))
-            .addImm(PPC::InvertPredicate(Pred)).addReg(CRReg).addImm(2);
-        } else if (I->getOpcode() == PPC::BC) {
-          unsigned CRBit = I->getOperand(0).getReg();
-          BuildMI(MBB, I, dl, TII->get(PPC::BCn)).addReg(CRBit).addImm(2);
-        } else if (I->getOpcode() == PPC::BCn) {
-          unsigned CRBit = I->getOperand(0).getReg();
-          BuildMI(MBB, I, dl, TII->get(PPC::BC)).addReg(CRBit).addImm(2);
-        } else if (I->getOpcode() == PPC::BDNZ) {
-          BuildMI(MBB, I, dl, TII->get(PPC::BDZ)).addImm(2);
-        } else if (I->getOpcode() == PPC::BDNZ8) {
-          BuildMI(MBB, I, dl, TII->get(PPC::BDZ8)).addImm(2);
-        } else if (I->getOpcode() == PPC::BDZ) {
-          BuildMI(MBB, I, dl, TII->get(PPC::BDNZ)).addImm(2);
-        } else if (I->getOpcode() == PPC::BDZ8) {
-          BuildMI(MBB, I, dl, TII->get(PPC::BDNZ8)).addImm(2);
-        } else {
-           llvm_unreachable("Unhandled branch type!");
-        }
-
-        // Uncond branch to the real destination.
-        I = BuildMI(MBB, I, dl, TII->get(PPC::B)).addMBB(Dest);
-
-        // Remove the old branch from the function.
-        OldBranch.eraseFromParent();
-
-        // Remember that this instruction is 8-bytes, increase the size of the
-        // block by 4, remember to iterate.
-        BlockSizes[MBB.getNumber()].first += 4;
-        MBBStartOffset += 8;
-        ++NumExpanded;
-        MadeChange = true;
-      }
-    }
-
-    if (MadeChange) {
-      // If we're going to iterate again, make sure we've updated our
-      // padding-based contributions to the block sizes.
-      unsigned Offset = InitialOffset;
-      for (MachineFunction::iterator MFI = Fn.begin(), E = Fn.end(); MFI != E;
-           ++MFI) {
-        MachineBasicBlock *MBB = &*MFI;
-
-        if (MBB->getNumber() > 0) {
-          auto &BS = BlockSizes[MBB->getNumber()-1];
-          BS.first -= BS.second;
-          Offset -= BS.second;
-
-          unsigned AlignExtra = GetAlignmentAdjustment(*MBB, Offset);
-
-          BS.first += AlignExtra;
-          BS.second = AlignExtra;
-
-          Offset += AlignExtra;
-        }
-
-        Offset += BlockSizes[MBB->getNumber()].first;
-      }
-    }
-
-    EverMadeChange |= MadeChange;
-  }
-
-  BlockSizes.clear();
-  return true;
-}