1 files changed, 0 insertions, 153 deletions
diff --git a/contrib/llvm/lib/Target/X86/X86FloatingPointRegKill.cpp b/contrib/llvm/lib/Target/X86/X86FloatingPointRegKill.cpp
deleted file mode 100644
index 2c98b96..0000000
--- a/contrib/llvm/lib/Target/X86/X86FloatingPointRegKill.cpp
+++ /dev/null
@@ -1,153 +0,0 @@
-//===-- X86FloatingPoint.cpp - FP_REG_KILL inserter -----------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines the pass which inserts FP_REG_KILL instructions.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "x86-codegen"
-#include "X86.h"
-#include "X86InstrInfo.h"
-#include "llvm/Instructions.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/Passes.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/CFG.h"
-#include "llvm/ADT/Statistic.h"
-using namespace llvm;
-
-STATISTIC(NumFPKill, "Number of FP_REG_KILL instructions added");
-
-namespace {
-  struct FPRegKiller : public MachineFunctionPass {
-    static char ID;
-    FPRegKiller() : MachineFunctionPass(&ID) {}
-
-    virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-      AU.setPreservesCFG();
-      AU.addPreservedID(MachineLoopInfoID);
-      AU.addPreservedID(MachineDominatorsID);
-      MachineFunctionPass::getAnalysisUsage(AU);
-    }
-
-    virtual bool runOnMachineFunction(MachineFunction &MF);
-
-    virtual const char *getPassName() const {
-      return "X86 FP_REG_KILL inserter";
-    }
-  };
-  char FPRegKiller::ID = 0;
-}
-
-FunctionPass *llvm::createX87FPRegKillInserterPass() {
-  return new FPRegKiller();
-}
-
-/// isFPStackVReg - Return true if the specified vreg is from a fp stack
-/// register class.
-static bool isFPStackVReg(unsigned RegNo, const MachineRegisterInfo &MRI) {
-  if (!TargetRegisterInfo::isVirtualRegister(RegNo))
-    return false;
-  
-  switch (MRI.getRegClass(RegNo)->getID()) {
-  default: return false;
-  case X86::RFP32RegClassID:
-  case X86::RFP64RegClassID:
-  case X86::RFP80RegClassID:
-  return true;
-  }
-}
-
-
-/// ContainsFPStackCode - Return true if the specific MBB has floating point
-/// stack code, and thus needs an FP_REG_KILL.
-static bool ContainsFPStackCode(MachineBasicBlock *MBB,
-                                const MachineRegisterInfo &MRI) {
-  // Scan the block, looking for instructions that define or use fp stack vregs.
-  for (MachineBasicBlock::iterator I = MBB->begin(), E = MBB->end();
-       I != E; ++I) {
-    for (unsigned op = 0, e = I->getNumOperands(); op != e; ++op) {
-      if (!I->getOperand(op).isReg())
-        continue;
-      if (unsigned Reg = I->getOperand(op).getReg())
-        if (isFPStackVReg(Reg, MRI))
-          return true;
-    }
-  }
-  
-  // Check PHI nodes in successor blocks.  These PHI's will be lowered to have
-  // a copy of the input value in this block, which is a definition of the
-  // value.
-  for (MachineBasicBlock::succ_iterator SI = MBB->succ_begin(),
-       E = MBB->succ_end(); SI != E; ++ SI) {
-    MachineBasicBlock *SuccBB = *SI;
-    for (MachineBasicBlock::iterator I = SuccBB->begin(), E = SuccBB->end();
-         I != E; ++I) {
-      // All PHI nodes are at the top of the block.
-      if (!I->isPHI()) break;
-      
-      if (isFPStackVReg(I->getOperand(0).getReg(), MRI))
-        return true;
-    }
-  }
-  
-  return false;
-}                                 
-
-bool FPRegKiller::runOnMachineFunction(MachineFunction &MF) {
-  // If we are emitting FP stack code, scan the basic block to determine if this
-  // block defines or uses any FP values.  If so, put an FP_REG_KILL instruction
-  // before the terminator of the block.
-
-  // Note that FP stack instructions are used in all modes for long double,
-  // so we always need to do this check.
-  // Also note that it's possible for an FP stack register to be live across
-  // an instruction that produces multiple basic blocks (SSE CMOV) so we
-  // must check all the generated basic blocks.
-
-  // Scan all of the machine instructions in these MBBs, checking for FP
-  // stores.  (RFP32 and RFP64 will not exist in SSE mode, but RFP80 might.)
-
-  // Fast-path: If nothing is using the x87 registers, we don't need to do
-  // any scanning.
-  const MachineRegisterInfo &MRI = MF.getRegInfo();
-  if (MRI.getRegClassVirtRegs(X86::RFP80RegisterClass).empty() &&
-      MRI.getRegClassVirtRegs(X86::RFP64RegisterClass).empty() &&
-      MRI.getRegClassVirtRegs(X86::RFP32RegisterClass).empty())
-    return false;
-
-  bool Changed = false;
-  MachineFunction::iterator MBBI = MF.begin();
-  MachineFunction::iterator EndMBB = MF.end();
-  for (; MBBI != EndMBB; ++MBBI) {
-    MachineBasicBlock *MBB = MBBI;
-    
-    // If this block returns, ignore it.  We don't want to insert an FP_REG_KILL
-    // before the return.
-    if (!MBB->empty()) {
-      MachineBasicBlock::iterator EndI = MBB->end();
-      --EndI;
-      if (EndI->getDesc().isReturn())
-        continue;
-    }
-    
-    // If we find any FP stack code, emit the FP_REG_KILL instruction.
-    if (ContainsFPStackCode(MBB, MRI)) {
-      BuildMI(*MBB, MBBI->getFirstTerminator(), DebugLoc(),
-              MF.getTarget().getInstrInfo()->get(X86::FP_REG_KILL));
-      ++NumFPKill;
-      Changed = true;
-    }
-  }
-
-  return Changed;
-}