1 files changed, 0 insertions, 37 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index 363674b387..17c83457d4 100644
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -958,43 +958,6 @@ void X86InstrInfo::reMaterialize(MachineBasicBlock &MBB,
   NewMI->getOperand(0).setSubReg(SubIdx);
 }
 
-/// isInvariantLoad - Return true if the specified instruction (which is marked
-/// mayLoad) is loading from a location whose value is invariant across the
-/// function.  For example, loading a value from the constant pool or from
-/// from the argument area of a function if it does not change.  This should
-/// only return true of *all* loads the instruction does are invariant (if it
-/// does multiple loads).
-bool X86InstrInfo::isInvariantLoad(const MachineInstr *MI) const {
-  // This code cares about loads from three cases: constant pool entries,
-  // invariant argument slots, and global stubs.  In order to handle these cases
-  // for all of the myriad of X86 instructions, we just scan for a CP/FI/GV
-  // operand and base our analysis on it.  This is safe because the address of
-  // none of these three cases is ever used as anything other than a load base
-  // and X86 doesn't have any instructions that load from multiple places.
-  
-  for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
-    const MachineOperand &MO = MI->getOperand(i);
-    // Loads from constant pools are trivially invariant.
-    if (MO.isCPI())
-      return true;
-
-    if (MO.isGlobal())
-      return isGlobalStubReference(MO.getTargetFlags());
-
-    // If this is a load from an invariant stack slot, the load is a constant.
-    if (MO.isFI()) {
-      const MachineFrameInfo &MFI =
-        *MI->getParent()->getParent()->getFrameInfo();
-      int Idx = MO.getIndex();
-      return MFI.isFixedObjectIndex(Idx) && MFI.isImmutableObjectIndex(Idx);
-    }
-  }
-  
-  // All other instances of these instructions are presumed to have other
-  // issues.
-  return false;
-}
-
 /// hasLiveCondCodeDef - True if MI has a condition code def, e.g. EFLAGS, that
 /// is not marked dead.
 static bool hasLiveCondCodeDef(MachineInstr *MI) {