1 files changed, 0 insertions, 27 deletions
diff --git a/llvm/lib/Target/X86/X86InstrInfo.cpp b/llvm/lib/Target/X86/X86InstrInfo.cpp
index caffe62867b..bf26d74758f 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.cpp
+++ b/llvm/lib/Target/X86/X86InstrInfo.cpp
@@ -24,33 +24,6 @@ X86InstrInfo::X86InstrInfo()
 }
 
 
-// createNOPinstr - returns the target's implementation of NOP, which is
-// usually a pseudo-instruction, implemented by a degenerate version of
-// another instruction, e.g. X86: `xchg ax, ax'; SparcV9: `sethi r0, r0, r0'
-//
-MachineInstr* X86InstrInfo::createNOPinstr() const {
-  return BuildMI(X86::XCHGrr16, 2).addReg(X86::AX, MachineOperand::UseAndDef)
-                                  .addReg(X86::AX, MachineOperand::UseAndDef);
-}
-
-
-/// isNOPinstr - not having a special NOP opcode, we need to know if a given
-/// instruction is interpreted as an `official' NOP instr, i.e., there may be
-/// more than one way to `do nothing' but only one canonical way to slack off.
-//
-bool X86InstrInfo::isNOPinstr(const MachineInstr &MI) const {
-  // Make sure the instruction is EXACTLY `xchg ax, ax'
-  if (MI.getOpcode() == X86::XCHGrr16) {
-    const MachineOperand &op0 = MI.getOperand(0), &op1 = MI.getOperand(1);
-    if (op0.isRegister() && op0.getReg() == X86::AX &&
-        op1.isRegister() && op1.getReg() == X86::AX) {
-      return true;
-    }
-  }
-  // FIXME: there are several NOOP instructions, we should check for them here.
-  return false;
-}
-
 bool X86InstrInfo::isMoveInstr(const MachineInstr& MI,
                                unsigned& sourceReg,
                                unsigned& destReg) const {