Revert "Add MIR-level outlining pass"

Revert Machine Outliner for now, as it breaks the asan bot.

This reverts commit r296418.

llvm-svn: 296426

1 files changed, 0 insertions, 80 deletions

diff --git a/llvm/lib/Target/X86/X86InstrInfo.cpp b/llvm/lib/Target/X86/X86InstrInfo.cpp
index d3838149a0e..383af1a8e64 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.cpp
+++ b/llvm/lib/Target/X86/X86InstrInfo.cpp
@@ -10383,83 +10383,3 @@ namespace {
 char LDTLSCleanup::ID = 0;
 FunctionPass*
 llvm::createCleanupLocalDynamicTLSPass() { return new LDTLSCleanup(); }
-
-unsigned X86InstrInfo::getOutliningBenefit(size_t SequenceSize,
-                                           size_t Occurrences) const {
-  unsigned NotOutlinedSize = SequenceSize * Occurrences;
-
-  // Sequence appears once in outlined function (Sequence.size())
-  // One return instruction (+1)
-  // One call per occurrence (Occurrences)
-  unsigned OutlinedSize = (SequenceSize + 1) + Occurrences;
-
-  // Return the number of instructions saved by outlining this sequence.
-  return NotOutlinedSize > OutlinedSize ? NotOutlinedSize - OutlinedSize : 0;
-}
-
-bool X86InstrInfo::isFunctionSafeToOutlineFrom(MachineFunction &MF) const {
-  return MF.getFunction()->hasFnAttribute(Attribute::NoRedZone);
-}
-
-X86GenInstrInfo::MachineOutlinerInstrType
-X86InstrInfo::getOutliningType(MachineInstr &MI) const {
-
-  // Don't outline returns or basic block terminators.
-  if (MI.isReturn() || MI.isTerminator())
-    return MachineOutlinerInstrType::Illegal;
-
-  // Don't outline anything that modifies or reads from the stack pointer.
-  //
-  // FIXME: There are instructions which are being manually built without
-  // explicit uses/defs so we also have to check the MCInstrDesc. We should be
-  // able to remove the extra checks once those are fixed up. For example,
-  // sometimes we might get something like %RAX<def> = POP64r 1. This won't be
-  // caught by modifiesRegister or readsRegister even though the instruction
-  // really ought to be formed so that modifiesRegister/readsRegister would
-  // catch it.
-  if (MI.modifiesRegister(X86::RSP, &RI) || MI.readsRegister(X86::RSP, &RI) ||
-      MI.getDesc().hasImplicitUseOfPhysReg(X86::RSP) ||
-      MI.getDesc().hasImplicitDefOfPhysReg(X86::RSP))
-    return MachineOutlinerInstrType::Illegal;
-
-  if (MI.readsRegister(X86::RIP, &RI) ||
-      MI.getDesc().hasImplicitUseOfPhysReg(X86::RIP) ||
-      MI.getDesc().hasImplicitDefOfPhysReg(X86::RIP))
-    return MachineOutlinerInstrType::Illegal;
-
-  if (MI.isPosition())
-    return MachineOutlinerInstrType::Illegal;
-
-  for (const MachineOperand &MOP : MI.operands())
-    if (MOP.isCPI() || MOP.isJTI() || MOP.isCFIIndex() || MOP.isFI() ||
-        MOP.isTargetIndex())
-      return MachineOutlinerInstrType::Illegal;
-
-  // Don't allow debug values to impact outlining type.
-  if (MI.isDebugValue() || MI.isIndirectDebugValue())
-    return MachineOutlinerInstrType::Invisible;
-
-  return MachineOutlinerInstrType::Legal;
-}
-
-void X86InstrInfo::insertOutlinerEpilogue(MachineBasicBlock &MBB,
-                                          MachineFunction &MF) const {
-
-  MachineInstr *retq = BuildMI(MF, DebugLoc(), get(X86::RETQ));
-  MBB.insert(MBB.end(), retq);
-}
-
-void X86InstrInfo::insertOutlinerPrologue(MachineBasicBlock &MBB,
-                                          MachineFunction &MF) const {
-  return;
-}
-
-MachineBasicBlock::iterator
-X86InstrInfo::insertOutlinedCall(Module &M, MachineBasicBlock &MBB,
-                                 MachineBasicBlock::iterator &It,
-                                 MachineFunction &MF) const {
-  It = MBB.insert(It,
-                  BuildMI(MF, DebugLoc(), get(X86::CALL64pcrel32))
-                      .addGlobalAddress(M.getNamedValue(MF.getName())));
-  return It;
-}