Remove -disable-mips-abicall and -enable-mips-absolute-call command-line

options, which don't appear to be useful.  -enable-mips-absolute-call is
completely unused (and unless I'm mistaken, is supposed to have the 
same effect that -relocation-model=dynamic-no-pic should have), 
and -disable-mips-abicall appears to be effectively a 
synonym for -relocation-model=static. Adjust the few users of hasABICall
to checks which seem more appropriate.  Update MipsSubtarget, 
MipsTargetMachine, and MipselTargetMachine to synchronize with recent 
changes.

llvm-svn: 77938

llvm/lib/Target/Mips/MipsISelLowering.cpp

@@ -497,10 +497,9 @@ LowerGlobalAddress(SDValue Op, SelectionDAG &DAG)
   GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
   SDValue GA = DAG.getTargetGlobalAddress(GV, MVT::i32);
 
-  if (!Subtarget->hasABICall()) {
-    SDVTList VTs = DAG.getVTList(MVT::i32);
+  if (getTargetMachine().getRelocationModel() != Reloc::PIC_) {
     // %hi/%lo relocation
-    SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, VTs, &GA, 1);
+    SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, MVT::i32, GA);
     SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, GA);
     return DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo);
 
@@ -566,8 +565,7 @@ LowerConstantPool(SDValue Op, SelectionDAG &DAG)
   // but the asm printer currently doens't support this feature without
   // hacking it. This feature should come soon so we can uncomment the 
   // stuff below.
-  //if (!Subtarget->hasABICall() &&  
-  //    IsInSmallSection(getTargetData()->getTypeAllocSize(C->getType()))) {
+  //if (IsInSmallSection(C->getType())) {
   //  SDValue GPRelNode = DAG.getNode(MipsISD::GPRel, MVT::i32, CP);
   //  SDValue GOT = DAG.getGLOBAL_OFFSET_TABLE(MVT::i32);
   //  ResNode = DAG.getNode(ISD::ADD, MVT::i32, GOT, GPRelNode); 

llvm/lib/Target/Mips/MipsSubtarget.cpp

@@ -17,19 +17,12 @@
 #include "llvm/Support/CommandLine.h"
 using namespace llvm;
 
-static cl::opt<bool>
-NotABICall("disable-mips-abicall", cl::Hidden,
-           cl::desc("Disable code for SVR4-style dynamic objects"));
-static cl::opt<bool>
-AbsoluteCall("enable-mips-absolute-call", cl::Hidden,
-             cl::desc("Enable absolute call within abicall"));
-
-MipsSubtarget::MipsSubtarget(const TargetMachine &TM, const std::string &TT,
-                             const std::string &FS, bool little) : 
+MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &FS,
+                             bool little) : 
   MipsArchVersion(Mips1), MipsABI(O32), IsLittle(little), IsSingleFloat(false),
-  IsFP64bit(false), IsGP64bit(false), HasVFPU(false), HasABICall(true), 
-  HasAbsoluteCall(false), IsLinux(true), HasSEInReg(false), HasCondMov(false),
-  HasMulDivAdd(false), HasMinMax(false), HasSwap(false), HasBitCount(false)
+  IsFP64bit(false), IsGP64bit(false), HasVFPU(false), IsLinux(true),
+  HasSEInReg(false), HasCondMov(false), HasMulDivAdd(false), HasMinMax(false),
+  HasSwap(false), HasBitCount(false)
 {
   std::string CPU = "mips1";
   MipsArchVersion = Mips1;
@@ -56,13 +49,4 @@ MipsSubtarget::MipsSubtarget(const TargetMachine &TM, const std::string &TT,
     HasSwap = true;
     HasCondMov = true;
   }
-
-  // Abicall is the default for O32 ABI, but is disabled within EABI and in
-  // static code.
-  if (NotABICall || isABI_EABI() || (TM.getRelocationModel() == Reloc::Static))
-    HasABICall = false;
-
-  // TODO: disable when handling 64 bit symbols in the future.
-  if (HasABICall && AbsoluteCall)
-    HasAbsoluteCall = true;
 }

llvm/lib/Target/Mips/MipsSubtarget.h

@@ -57,13 +57,6 @@ protected:
   // HasVFPU - Processor has a vector floating point unit.
   bool HasVFPU;
 
-  // IsABICall - Enable SRV4 code for SVR4-style dynamic objects 
-  bool HasABICall;
-
-  // HasAbsoluteCall - Enable code that is not fully position-independent.
-  // Only works with HasABICall enabled.
-  bool HasAbsoluteCall;
-
   // isLinux - Target system is Linux. Is false we consider ELFOS for now.
   bool IsLinux;
 
@@ -99,8 +92,7 @@ public:
 
   /// This constructor initializes the data members to match that
   /// of the specified triple.
-  MipsSubtarget(const TargetMachine &TM, const std::string &TT, 
-                const std::string &FS, bool little);
+  MipsSubtarget(const std::string &TT, const std::string &FS, bool little);
   
   /// ParseSubtargetFeatures - Parses features string setting specified 
   /// subtarget options.  Definition of function is auto generated by tblgen.
@@ -116,8 +108,6 @@ public:
   bool isSingleFloat() const { return IsSingleFloat; };
   bool isNotSingleFloat() const { return !IsSingleFloat; };
   bool hasVFPU() const { return HasVFPU; };
-  bool hasABICall() const { return HasABICall; };
-  bool hasAbsoluteCall() const { return HasAbsoluteCall; };
   bool isLinux() const { return IsLinux; };
 
   /// Features related to the presence of specific instructions.

llvm/lib/Target/Mips/MipsTargetAsmInfo.cpp

@@ -25,8 +25,6 @@ MipsTargetAsmInfo::MipsTargetAsmInfo(const MipsTargetMachine &TM) {
   CommentString               = "#";
   ZeroDirective               = "\t.space\t";
 
-  if (!TM.getSubtarget<MipsSubtarget>().hasABICall())
-    JumpTableDirective = "\t.word\t";
-  else
+  if (TM.getRelocationModel() == Reloc::PIC_)
     JumpTableDirective = "\t.gpword\t";
 }

llvm/lib/Target/Mips/MipsTargetMachine.cpp

@@ -20,8 +20,8 @@ using namespace llvm;
 
 extern "C" void LLVMInitializeMipsTarget() {
   // Register the target.
-  RegisterTargetMachineDeprecated<MipsTargetMachine> X(TheMipsTarget);
-  RegisterTargetMachineDeprecated<MipselTargetMachine> Y(TheMipselTarget);
+  RegisterTargetMachine<MipsTargetMachine> X(TheMipsTarget);
+  RegisterTargetMachine<MipselTargetMachine> Y(TheMipselTarget);
 }
 
 const TargetAsmInfo *MipsTargetMachine::
@@ -38,10 +38,10 @@ createTargetAsmInfo() const
 // an easier handling.
 // Using CodeModel::Large enables different CALL behavior.
 MipsTargetMachine::
-MipsTargetMachine(const Target &T, const Module &M, const std::string &FS,
+MipsTargetMachine(const Target &T, const std::string &TT, const std::string &FS,
                   bool isLittle=false):
   LLVMTargetMachine(T),
-  Subtarget(*this, M.getTargetTriple(), FS, isLittle), 
+  Subtarget(TT, FS, isLittle), 
   DataLayout(isLittle ? std::string("e-p:32:32:32-i8:8:32-i16:16:32") :
                         std::string("E-p:32:32:32-i8:8:32-i16:16:32")), 
   InstrInfo(*this), 
@@ -49,8 +49,12 @@ MipsTargetMachine(const Target &T, const Module &M, const std::string &FS,
   TLInfo(*this) 
 {
   // Abicall enables PIC by default
-  if (Subtarget.hasABICall())
-    setRelocationModel(Reloc::PIC_);  
+  if (getRelocationModel() == Reloc::Default) {
+    if (Subtarget.isABI_O32())
+      setRelocationModel(Reloc::PIC_);
+    else
+      setRelocationModel(Reloc::Static);
+  }
 
   // TODO: create an option to enable long calls, like -mlong-calls, 
   // that would be our CodeModel::Large. It must not work with Abicall.
@@ -59,8 +63,9 @@ MipsTargetMachine(const Target &T, const Module &M, const std::string &FS,
 }
 
 MipselTargetMachine::
-MipselTargetMachine(const Target &T, const Module &M, const std::string &FS) :
-  MipsTargetMachine(T, M, FS, true) {}
+MipselTargetMachine(const Target &T, const std::string &TT,
+                    const std::string &FS) :
+  MipsTargetMachine(T, TT, FS, true) {}
 
 // Install an instruction selector pass using 
 // the ISelDag to gen Mips code.

llvm/lib/Target/Mips/MipsTargetMachine.h

@@ -35,7 +35,7 @@ namespace llvm {
     virtual const TargetAsmInfo *createTargetAsmInfo() const;
     
   public:
-    MipsTargetMachine(const Target &T, const Module &M,
+    MipsTargetMachine(const Target &T, const std::string &TT,
                       const std::string &FS, bool isLittle);
     
     virtual const MipsInstrInfo   *getInstrInfo()     const 
@@ -66,7 +66,8 @@ namespace llvm {
 ///
 class MipselTargetMachine : public MipsTargetMachine {
 public:
-  MipselTargetMachine(const Target &T, const Module &M, const std::string &FS);
+  MipselTargetMachine(const Target &T, const std::string &TT,
+                      const std::string &FS);
 };
 
 } // End llvm namespace