diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h
index 0b1cb38..da6027c 100644
--- a/include/llvm/Target/TargetMachine.h
+++ b/include/llvm/Target/TargetMachine.h
@@ -39,7 +39,7 @@
   enum Model {
     Default,
     Static,
-    PIC,
+    PIC_,         // Cannot be named PIC due to collision with -DPIC
     DynamicNoPIC
   };
 }
diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp
index cbadca8..6e75f3c 100644
--- a/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -173,7 +173,7 @@
       } else {
         O << "ha16(";
         printOp(MI->getOperand(OpNo));
-        if (TM.getRelocationModel() == Reloc::PIC)
+        if (TM.getRelocationModel() == Reloc::PIC_)
           O << "-\"L" << getFunctionNumber() << "$pb\")";
         else
           O << ')';
@@ -185,7 +185,7 @@
       } else {
         O << "lo16(";
         printOp(MI->getOperand(OpNo));
-        if (TM.getRelocationModel() == Reloc::PIC)
+        if (TM.getRelocationModel() == Reloc::PIC_)
           O << "-\"L" << getFunctionNumber() << "$pb\")";
         else
           O << ')';
@@ -599,7 +599,7 @@
   bool isPPC64 = TD->getPointerSizeInBits() == 64;
 
   // Output stubs for dynamically-linked functions
-  if (TM.getRelocationModel() == Reloc::PIC) {
+  if (TM.getRelocationModel() == Reloc::PIC_) {
     for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
          i != e; ++i) {
       SwitchToTextSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index bc764bc..b761aa8 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -619,7 +619,7 @@
     return DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
   }
   
-  if (TM.getRelocationModel() == Reloc::PIC) {
+  if (TM.getRelocationModel() == Reloc::PIC_) {
     // With PIC, the first instruction is actually "GR+hi(&G)".
     Hi = DAG.getNode(ISD::ADD, PtrVT,
                      DAG.getNode(PPCISD::GlobalBaseReg, PtrVT), Hi);
@@ -649,7 +649,7 @@
     return DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
   }
   
-  if (TM.getRelocationModel() == Reloc::PIC) {
+  if (TM.getRelocationModel() == Reloc::PIC_) {
     // With PIC, the first instruction is actually "GR+hi(&G)".
     Hi = DAG.getNode(ISD::ADD, PtrVT,
                      DAG.getNode(PPCISD::GlobalBaseReg, MVT::i32), Hi);
@@ -680,7 +680,7 @@
     return DAG.getNode(ISD::ADD, PtrVT, Hi, Lo);
   }
   
-  if (TM.getRelocationModel() == Reloc::PIC) {
+  if (TM.getRelocationModel() == Reloc::PIC_) {
     // With PIC, the first instruction is actually "GR+hi(&G)".
     Hi = DAG.getNode(ISD::ADD, PtrVT,
                      DAG.getNode(PPCISD::GlobalBaseReg, PtrVT), Hi);
diff --git a/lib/Target/PowerPC/PPCTargetMachine.cpp b/lib/Target/PowerPC/PPCTargetMachine.cpp
index 12c22e7..deb479a 100644
--- a/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -94,7 +94,7 @@
     if (Subtarget.isDarwin())
       setRelocationModel(Reloc::DynamicNoPIC);
     else
-      setRelocationModel(Reloc::PIC);
+      setRelocationModel(Reloc::PIC_);
 }
 
 PPC32TargetMachine::PPC32TargetMachine(const Module &M, const std::string &FS) 
diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index 1fbad7d..d1ffaa7 100644
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -66,7 +66,7 @@
                  "Target default relocation model"),
       clEnumValN(Reloc::Static, "static",
                  "Non-relocatable code"),
-      clEnumValN(Reloc::PIC, "pic",
+      clEnumValN(Reloc::PIC_, "pic",
                  "Fully relocatable, position independent code"),
       clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
                  "Relocatable external references, non-relocatable code"),
diff --git a/lib/Target/X86/X86ATTAsmPrinter.cpp b/lib/Target/X86/X86ATTAsmPrinter.cpp
index e94bf3a..769aa73 100755
--- a/lib/Target/X86/X86ATTAsmPrinter.cpp
+++ b/lib/Target/X86/X86ATTAsmPrinter.cpp
@@ -152,7 +152,7 @@
     O << PrivateGlobalPrefix << "CPI" << getFunctionNumber() << "_"
       << MO.getConstantPoolIndex();
     if (Subtarget->TargetType == X86Subtarget::isDarwin && 
-        TM.getRelocationModel() == Reloc::PIC)
+        TM.getRelocationModel() == Reloc::PIC_)
       O << "-\"L" << getFunctionNumber() << "$pb\"";
     int Offset = MO.getOffset();
     if (Offset > 0)
@@ -185,7 +185,7 @@
       } else {
         O << Mang->getValueName(GV);
       } 
-      if (!isCallOp && TM.getRelocationModel() == Reloc::PIC)
+      if (!isCallOp && TM.getRelocationModel() == Reloc::PIC_)
         O << "-\"L" << getFunctionNumber() << "$pb\"";
    } else
       O << Mang->getValueName(MO.getGlobal());
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 4ebe4ca..2061c66 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -2746,7 +2746,7 @@
                                                       CP->getAlignment()));
   if (Subtarget->isTargetDarwin()) {
     // With PIC, the address is actually $g + Offset.
-    if (getTargetMachine().getRelocationModel() == Reloc::PIC)
+    if (getTargetMachine().getRelocationModel() == Reloc::PIC_)
       Result = DAG.getNode(ISD::ADD, getPointerTy(),
                     DAG.getNode(X86ISD::GlobalBaseReg, getPointerTy()), Result);
   }
@@ -2762,7 +2762,7 @@
                                                             getPointerTy()));
   if (Subtarget->isTargetDarwin()) {
     // With PIC, the address is actually $g + Offset.
-    if (getTargetMachine().getRelocationModel() == Reloc::PIC)
+    if (getTargetMachine().getRelocationModel() == Reloc::PIC_)
       Result = DAG.getNode(ISD::ADD, getPointerTy(),
                            DAG.getNode(X86ISD::GlobalBaseReg, getPointerTy()),
                            Result);
@@ -2788,7 +2788,7 @@
                                                              getPointerTy()));
   if (Subtarget->isTargetDarwin()) {
     // With PIC, the address is actually $g + Offset.
-    if (getTargetMachine().getRelocationModel() == Reloc::PIC)
+    if (getTargetMachine().getRelocationModel() == Reloc::PIC_)
       Result = DAG.getNode(ISD::ADD, getPointerTy(),
                            DAG.getNode(X86ISD::GlobalBaseReg, getPointerTy()),
                            Result);
@@ -3173,7 +3173,7 @@
                                                         getPointerTy()));
   if (Subtarget->isTargetDarwin()) {
     // With PIC, the address is actually $g + Offset.
-    if (getTargetMachine().getRelocationModel() == Reloc::PIC)
+    if (getTargetMachine().getRelocationModel() == Reloc::PIC_)
       Result = DAG.getNode(ISD::ADD, getPointerTy(),
                            DAG.getNode(X86ISD::GlobalBaseReg, getPointerTy()),
                            Result);    
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index e4b6a94..69e651f 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -78,7 +78,7 @@
     if (Subtarget.isTargetDarwin())
       setRelocationModel(Reloc::DynamicNoPIC);
     else
-      setRelocationModel(Reloc::PIC);
+      setRelocationModel(Reloc::PIC_);
 }