1 files changed, 0 insertions, 25 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index d0c77030acd..b293dfa98f8 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -1926,20 +1926,10 @@ unsigned X86TargetLowering::getJumpTableEncoding() const {
   if (isPositionIndependent() && Subtarget.isPICStyleGOT())
     return MachineJumpTableInfo::EK_Custom32;
 
-  // On Win64, we want to use both label differences and a separate section.
-  if (Subtarget.isTargetWin64())
-    return MachineJumpTableInfo::EK_LabelDifference32;
-
   // Otherwise, use the normal jump table encoding heuristics.
   return TargetLowering::getJumpTableEncoding();
 }
 
-bool X86TargetLowering::isJumpTableRelative() const {
-  if (Subtarget.isTargetWin64())
-    return true;
-  return TargetLowering::isJumpTableRelative();
-}
-
 bool X86TargetLowering::useSoftFloat() const {
   return Subtarget.useSoftFloat();
 }
@@ -1958,19 +1948,11 @@ X86TargetLowering::LowerCustomJumpTableEntry(const MachineJumpTableInfo *MJTI,
 /// Returns relocation base for the given PIC jumptable.
 SDValue X86TargetLowering::getPICJumpTableRelocBase(SDValue Table,
                                                     SelectionDAG &DAG) const {
-  // COFF doesn't have relocations to take the difference between two arbitrary
-  // symbols. The assembler, however, can resolve a fixup between the function
-  // entry and a basic block label, so use the function entry as the base.
-  if (Subtarget.isTargetWin64())
-    return DAG.getGlobalAddress(DAG.getMachineFunction().getFunction(), SDLoc(),
-                                getPointerTy(DAG.getDataLayout()));
-
   if (!Subtarget.is64Bit())
     // This doesn't have SDLoc associated with it, but is not really the
     // same as a Register.
     return DAG.getNode(X86ISD::GlobalBaseReg, SDLoc(),
                        getPointerTy(DAG.getDataLayout()));
-
   return Table;
 }
 
@@ -1979,13 +1961,6 @@ SDValue X86TargetLowering::getPICJumpTableRelocBase(SDValue Table,
 const MCExpr *X86TargetLowering::
 getPICJumpTableRelocBaseExpr(const MachineFunction *MF, unsigned JTI,
                              MCContext &Ctx) const {
-  // COFF doesn't have relocations to take the difference between two arbitrary
-  // symbols. The assembler, however, can resolve a fixup between the function
-  // entry and a basic block label, so use the function entry as the base.
-  if (Subtarget.isTargetWin64())
-    return MCSymbolRefExpr::create(
-        getTargetMachine().getSymbol(MF->getFunction()), Ctx);
-
   // X86-64 uses RIP relative addressing based on the jump table label.
   if (Subtarget.isPICStyleRIPRel())
     return TargetLowering::getPICJumpTableRelocBaseExpr(MF, JTI, Ctx);