When in -static mode, force the PIC style to none. Doing this requires fixing

code which conflated RIPRel PIC with x86-64.  Fix these to just check for X86-64
directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75092 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 33 insertions, 19 deletions

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 3a8d60024e..7c1ab401aa 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -1021,7 +1021,7 @@ SDValue X86TargetLowering::getPICJumpTableRelocBase(SDValue Table,
                                                       SelectionDAG &DAG) const {
   if (usesGlobalOffsetTable())
     return DAG.getGLOBAL_OFFSET_TABLE(getPointerTy());
-  if (!Subtarget->isPICStyleRIPRel())
+  if (!Subtarget->is64Bit())
     // This doesn't have DebugLoc associated with it, but is not really the
     // same as a Register.
     return DAG.getNode(X86ISD::GlobalBaseReg, DebugLoc::getUnknownLoc(),
@@ -4434,14 +4434,15 @@ X86TargetLowering::LowerConstantPool(SDValue Op, SelectionDAG &DAG) {
   // global base reg.
   unsigned char OpFlag = 0;
   unsigned WrapperKind = X86ISD::Wrapper;
-  if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
+  
+  if (Subtarget->is64Bit() &&
+      getTargetMachine().getCodeModel() == CodeModel::Small) {
+    WrapperKind = X86ISD::WrapperRIP;
+  } else if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
     if (Subtarget->isPICStyleStub())
       OpFlag = X86II::MO_PIC_BASE_OFFSET;
     else if (Subtarget->isPICStyleGOT())
       OpFlag = X86II::MO_GOTOFF;
-    else if (Subtarget->isPICStyleRIPRel() &&
-             getTargetMachine().getCodeModel() == CodeModel::Small)
-      WrapperKind = X86ISD::WrapperRIP;
   }
   
   SDValue Result = DAG.getTargetConstantPool(CP->getConstVal(), getPointerTy(),
@@ -4467,13 +4468,14 @@ SDValue X86TargetLowering::LowerJumpTable(SDValue Op, SelectionDAG &DAG) {
   // global base reg.
   unsigned char OpFlag = 0;
   unsigned WrapperKind = X86ISD::Wrapper;
-  if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
+  
+  if (Subtarget->is64Bit()) {
+    WrapperKind = X86ISD::WrapperRIP;
+  } else if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
     if (Subtarget->isPICStyleStub())
       OpFlag = X86II::MO_PIC_BASE_OFFSET;
     else if (Subtarget->isPICStyleGOT())
       OpFlag = X86II::MO_GOTOFF;
-    else if (Subtarget->isPICStyleRIPRel())
-      WrapperKind = X86ISD::WrapperRIP;
   }
   
   SDValue Result = DAG.getTargetJumpTable(JT->getIndex(), getPointerTy(),
@@ -4500,13 +4502,13 @@ X86TargetLowering::LowerExternalSymbol(SDValue Op, SelectionDAG &DAG) {
   // global base reg.
   unsigned char OpFlag = 0;
   unsigned WrapperKind = X86ISD::Wrapper;
-  if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
+  if (Subtarget->is64Bit()) {
+    WrapperKind = X86ISD::WrapperRIP;
+  } else if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
     if (Subtarget->isPICStyleStub())
       OpFlag = X86II::MO_PIC_BASE_OFFSET;
     else if (Subtarget->isPICStyleGOT())
       OpFlag = X86II::MO_GOTOFF;
-    else if (Subtarget->isPICStyleRIPRel())
-      WrapperKind = X86ISD::WrapperRIP;
   }
   
   SDValue Result = DAG.getTargetExternalSymbol(Sym, getPointerTy(), OpFlag);
@@ -4517,7 +4519,7 @@ X86TargetLowering::LowerExternalSymbol(SDValue Op, SelectionDAG &DAG) {
   
   // With PIC, the address is actually $g + Offset.
   if (getTargetMachine().getRelocationModel() == Reloc::PIC_ &&
-      !Subtarget->isPICStyleRIPRel()) {
+      !Subtarget->is64Bit()) {
     Result = DAG.getNode(ISD::ADD, DL, getPointerTy(),
                          DAG.getNode(X86ISD::GlobalBaseReg,
                                      DebugLoc::getUnknownLoc(),
@@ -4563,14 +4565,14 @@ X86TargetLowering::LowerGlobalAddress(const GlobalValue *GV, DebugLoc dl,
     Result = DAG.getTargetGlobalAddress(GV, getPointerTy(), 0, OpFlags);
   }
   
-  if (Subtarget->isPICStyleRIPRel() &&
+  if (Subtarget->is64Bit() &&
       getTargetMachine().getCodeModel() == CodeModel::Small)
     Result = DAG.getNode(X86ISD::WrapperRIP, dl, getPointerTy(), Result);
   else
     Result = DAG.getNode(X86ISD::Wrapper, dl, getPointerTy(), Result);
 
   // With PIC, the address is actually $g + Offset.
-  if (IsPic && !Subtarget->isPICStyleRIPRel()) {
+  if (IsPic && !Subtarget->is64Bit()) {
     Result = DAG.getNode(ISD::ADD, dl, getPointerTy(),
                          DAG.getNode(X86ISD::GlobalBaseReg, dl, getPointerTy()),
                          Result);
diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h
index 0d1434f8e9..5a4f8c5e27 100644
--- a/lib/Target/X86/X86Subtarget.h
+++ b/lib/Target/X86/X86Subtarget.h
@@ -22,9 +22,14 @@ class Module;
 class GlobalValue;
 class TargetMachine;
   
+/// PICStyles - The X86 backend supports a number of different styles of PIC.
+/// 
 namespace PICStyles {
 enum Style {
-  Stub, GOT, RIPRel, WinPIC, None
+  Stub,   // Used on i386-darwin
+  GOT,    // Used on many 32-bit unices.
+  RIPRel, // Used on X86-64 when not in -static mode.
+  None    // Set when in -static mode (not PIC or DynamicNoPIC mode).
 };
 }
 
@@ -185,7 +190,6 @@ public:
   bool isPICStyleGOT() const { return PICStyle == PICStyles::GOT; }
   bool isPICStyleStub() const { return PICStyle == PICStyles::Stub; }
   bool isPICStyleRIPRel() const { return PICStyle == PICStyles::RIPRel; }
-  bool isPICStyleWinPIC() const { return PICStyle == PICStyles::WinPIC; }
   
   /// getDarwinVers - Return the darwin version number, 8 = tiger, 9 = leopard.
   unsigned getDarwinVers() const { return DarwinVers; }
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index 5cf18a02eb..1909986165 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -147,6 +147,9 @@ X86TargetMachine::X86TargetMachine(const Module &M, const std::string &FS,
       setRelocationModel(Reloc::Static);
   }
 
+  assert(getRelocationModel() != Reloc::Default &&
+         "Relocation mode not picked");
+
   // ELF doesn't have a distinct dynamic-no-PIC model. Dynamic-no-PIC
   // is defined as a model for code which may be used in static or
   // dynamic executables but not necessarily a shared library. On ELF
@@ -164,9 +167,9 @@ X86TargetMachine::X86TargetMachine(const Module &M, const std::string &FS,
       setCodeModel(CodeModel::Small);
   }
 
-  if (Subtarget.isTargetCygMing())
-    Subtarget.setPICStyle(PICStyles::WinPIC);
-  else if (Subtarget.isTargetDarwin()) {
+  if (Subtarget.isTargetCygMing()) {
+    Subtarget.setPICStyle(PICStyles::None);
+  } else if (Subtarget.isTargetDarwin()) {
     if (Subtarget.is64Bit())
       Subtarget.setPICStyle(PICStyles::RIPRel);
     else
@@ -177,6 +180,11 @@ X86TargetMachine::X86TargetMachine(const Module &M, const std::string &FS,
     else
       Subtarget.setPICStyle(PICStyles::GOT);
   }
+      
+  // Finally, unless we're in PIC or DynamicNoPIC mode, set the PIC style to
+  // None.
+  if (getRelocationModel() == Reloc::Static)
+    Subtarget.setPICStyle(PICStyles::None);
 }
 
 //===----------------------------------------------------------------------===//