Add const qualifiers to CodeGen's use of LLVM IR constructs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101334 91177308-0d34-0410-b5e6-96231b3b80d8

11 files changed, 34 insertions, 30 deletions

diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/lib/Target/ARM/ARMBaseRegisterInfo.cpp
index f162546908..264187594c 100644
--- a/lib/Target/ARM/ARMBaseRegisterInfo.cpp
+++ b/lib/Target/ARM/ARMBaseRegisterInfo.cpp
@@ -1050,7 +1050,7 @@ emitLoadConstPool(MachineBasicBlock &MBB,
                   unsigned PredReg) const {
   MachineFunction &MF = *MBB.getParent();
   MachineConstantPool *ConstantPool = MF.getConstantPool();
-  Constant *C =
+  const Constant *C =
         ConstantInt::get(Type::getInt32Ty(MF.getFunction()->getContext()), Val);
   unsigned Idx = ConstantPool->getConstantPoolIndex(C, 4);
 
diff --git a/lib/Target/ARM/ARMCodeEmitter.cpp b/lib/Target/ARM/ARMCodeEmitter.cpp
index 32df5039f4..d9982703aa 100644
--- a/lib/Target/ARM/ARMCodeEmitter.cpp
+++ b/lib/Target/ARM/ARMCodeEmitter.cpp
@@ -150,7 +150,7 @@ namespace {
 
     /// Routines that handle operands which add machine relocations which are
     /// fixed up by the relocation stage.
-    void emitGlobalAddress(GlobalValue *GV, unsigned Reloc,
+    void emitGlobalAddress(const GlobalValue *GV, unsigned Reloc,
                            bool MayNeedFarStub,  bool Indirect,
                            intptr_t ACPV = 0);
     void emitExternalSymbolAddress(const char *ES, unsigned Reloc);
@@ -249,14 +249,16 @@ unsigned ARMCodeEmitter::getMachineOpValue(const MachineInstr &MI,
 
 /// emitGlobalAddress - Emit the specified address to the code stream.
 ///
-void ARMCodeEmitter::emitGlobalAddress(GlobalValue *GV, unsigned Reloc,
+void ARMCodeEmitter::emitGlobalAddress(const GlobalValue *GV, unsigned Reloc,
                                        bool MayNeedFarStub, bool Indirect,
                                        intptr_t ACPV) {
   MachineRelocation MR = Indirect
     ? MachineRelocation::getIndirectSymbol(MCE.getCurrentPCOffset(), Reloc,
-                                           GV, ACPV, MayNeedFarStub)
+                                           const_cast<GlobalValue *>(GV),
+                                           ACPV, MayNeedFarStub)
     : MachineRelocation::getGV(MCE.getCurrentPCOffset(), Reloc,
-                               GV, ACPV, MayNeedFarStub);
+                               const_cast<GlobalValue *>(GV), ACPV,
+                               MayNeedFarStub);
   MCE.addRelocation(MR);
 }
 
@@ -391,7 +393,7 @@ void ARMCodeEmitter::emitConstPoolInstruction(const MachineInstr &MI) {
           << (void*)MCE.getCurrentPCValue() << " " << *ACPV << '\n');
 
     assert(ACPV->isGlobalValue() && "unsupported constant pool value");
-    GlobalValue *GV = ACPV->getGV();
+    const GlobalValue *GV = ACPV->getGV();
     if (GV) {
       Reloc::Model RelocM = TM.getRelocationModel();
       emitGlobalAddress(GV, ARM::reloc_arm_machine_cp_entry,
@@ -403,7 +405,7 @@ void ARMCodeEmitter::emitConstPoolInstruction(const MachineInstr &MI) {
     }
     emitWordLE(0);
   } else {
-    Constant *CV = MCPE.Val.ConstVal;
+    const Constant *CV = MCPE.Val.ConstVal;
 
     DEBUG({
         errs() << "  ** Constant pool #" << CPI << " @ "
@@ -415,7 +417,7 @@ void ARMCodeEmitter::emitConstPoolInstruction(const MachineInstr &MI) {
         errs() << '\n';
       });
 
-    if (GlobalValue *GV = dyn_cast<GlobalValue>(CV)) {
+    if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV)) {
       emitGlobalAddress(GV, ARM::reloc_arm_absolute, isa<Function>(GV), false);
       emitWordLE(0);
     } else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
diff --git a/lib/Target/ARM/ARMConstantPoolValue.cpp b/lib/Target/ARM/ARMConstantPoolValue.cpp
index 90dd0c7fd9..f13ccc6384 100644
--- a/lib/Target/ARM/ARMConstantPoolValue.cpp
+++ b/lib/Target/ARM/ARMConstantPoolValue.cpp
@@ -21,7 +21,7 @@
 #include <cstdlib>
 using namespace llvm;
 
-ARMConstantPoolValue::ARMConstantPoolValue(Constant *cval, unsigned id,
+ARMConstantPoolValue::ARMConstantPoolValue(const Constant *cval, unsigned id,
                                            ARMCP::ARMCPKind K,
                                            unsigned char PCAdj,
                                            const char *Modif,
@@ -39,16 +39,17 @@ ARMConstantPoolValue::ARMConstantPoolValue(LLVMContext &C,
     CVal(NULL), S(strdup(s)), LabelId(id), Kind(ARMCP::CPExtSymbol),
     PCAdjust(PCAdj), Modifier(Modif), AddCurrentAddress(AddCA) {}
 
-ARMConstantPoolValue::ARMConstantPoolValue(GlobalValue *gv, const char *Modif)
+ARMConstantPoolValue::ARMConstantPoolValue(const GlobalValue *gv,
+                                           const char *Modif)
   : MachineConstantPoolValue((const Type*)Type::getInt32Ty(gv->getContext())),
     CVal(gv), S(NULL), LabelId(0), Kind(ARMCP::CPValue), PCAdjust(0),
     Modifier(Modif) {}
 
-GlobalValue *ARMConstantPoolValue::getGV() const {
+const GlobalValue *ARMConstantPoolValue::getGV() const {
   return dyn_cast_or_null<GlobalValue>(CVal);
 }
 
-BlockAddress *ARMConstantPoolValue::getBlockAddress() const {
+const BlockAddress *ARMConstantPoolValue::getBlockAddress() const {
   return dyn_cast_or_null<BlockAddress>(CVal);
 }
 
diff --git a/lib/Target/ARM/ARMConstantPoolValue.h b/lib/Target/ARM/ARMConstantPoolValue.h
index 741acde27b..6f4eddf736 100644
--- a/lib/Target/ARM/ARMConstantPoolValue.h
+++ b/lib/Target/ARM/ARMConstantPoolValue.h
@@ -36,7 +36,7 @@ namespace ARMCP {
 /// represent PC-relative displacement between the address of the load
 /// instruction and the constant being loaded, i.e. (&GV-(LPIC+8)).
 class ARMConstantPoolValue : public MachineConstantPoolValue {
-  Constant *CVal;          // Constant being loaded.
+  const Constant *CVal;    // Constant being loaded.
   const char *S;           // ExtSymbol being loaded.
   unsigned LabelId;        // Label id of the load.
   ARMCP::ARMCPKind Kind;   // Kind of constant.
@@ -46,20 +46,20 @@ class ARMConstantPoolValue : public MachineConstantPoolValue {
   bool AddCurrentAddress;
 
 public:
-  ARMConstantPoolValue(Constant *cval, unsigned id,
+  ARMConstantPoolValue(const Constant *cval, unsigned id,
                        ARMCP::ARMCPKind Kind = ARMCP::CPValue,
                        unsigned char PCAdj = 0, const char *Modifier = NULL,
                        bool AddCurrentAddress = false);
   ARMConstantPoolValue(LLVMContext &C, const char *s, unsigned id,
                        unsigned char PCAdj = 0, const char *Modifier = NULL,
                        bool AddCurrentAddress = false);
-  ARMConstantPoolValue(GlobalValue *GV, const char *Modifier);
+  ARMConstantPoolValue(const GlobalValue *GV, const char *Modifier);
   ARMConstantPoolValue();
   ~ARMConstantPoolValue();
 
-  GlobalValue *getGV() const;
+  const GlobalValue *getGV() const;
   const char *getSymbol() const { return S; }
-  BlockAddress *getBlockAddress() const;
+  const BlockAddress *getBlockAddress() const;
   const char *getModifier() const { return Modifier; }
   bool hasModifier() const { return Modifier != NULL; }
   bool mustAddCurrentAddress() const { return AddCurrentAddress; }
diff --git a/lib/Target/ARM/ARMExpandPseudoInsts.cpp b/lib/Target/ARM/ARMExpandPseudoInsts.cpp
index 1b8727d984..845d088f56 100644
--- a/lib/Target/ARM/ARMExpandPseudoInsts.cpp
+++ b/lib/Target/ARM/ARMExpandPseudoInsts.cpp
@@ -91,7 +91,7 @@ bool ARMExpandPseudo::ExpandMBB(MachineBasicBlock &MBB) {
           LO16 = LO16.addImm(Lo16);
           HI16 = HI16.addImm(Hi16);
         } else {
-          GlobalValue *GV = MO.getGlobal();
+          const GlobalValue *GV = MO.getGlobal();
           unsigned TF = MO.getTargetFlags();
           LO16 = LO16.addGlobalAddress(GV, MO.getOffset(), TF | ARMII::MO_LO16);
           HI16 = HI16.addGlobalAddress(GV, MO.getOffset(), TF | ARMII::MO_HI16);
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 494b5ad7d3..c3e85f5d2f 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -1070,7 +1070,7 @@ ARMTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
                            false, false, 0);
     }
   } else if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
-    GlobalValue *GV = G->getGlobal();
+    const GlobalValue *GV = G->getGlobal();
     isDirect = true;
     bool isExt = GV->isDeclaration() || GV->isWeakForLinker();
     bool isStub = (isExt && Subtarget->isTargetDarwin()) &&
@@ -1282,7 +1282,7 @@ SDValue ARMTargetLowering::LowerBlockAddress(SDValue Op, SelectionDAG &DAG) {
   unsigned ARMPCLabelIndex = 0;
   DebugLoc DL = Op.getDebugLoc();
   EVT PtrVT = getPointerTy();
-  BlockAddress *BA = cast<BlockAddressSDNode>(Op)->getBlockAddress();
+  const BlockAddress *BA = cast<BlockAddressSDNode>(Op)->getBlockAddress();
   Reloc::Model RelocM = getTargetMachine().getRelocationModel();
   SDValue CPAddr;
   if (RelocM == Reloc::Static) {
@@ -1348,7 +1348,7 @@ ARMTargetLowering::LowerToTLSGeneralDynamicModel(GlobalAddressSDNode *GA,
 SDValue
 ARMTargetLowering::LowerToTLSExecModels(GlobalAddressSDNode *GA,
                                         SelectionDAG &DAG) {
-  GlobalValue *GV = GA->getGlobal();
+  const GlobalValue *GV = GA->getGlobal();
   DebugLoc dl = GA->getDebugLoc();
   SDValue Offset;
   SDValue Chain = DAG.getEntryNode();
@@ -1411,7 +1411,7 @@ SDValue ARMTargetLowering::LowerGlobalAddressELF(SDValue Op,
                                                  SelectionDAG &DAG) {
   EVT PtrVT = getPointerTy();
   DebugLoc dl = Op.getDebugLoc();
-  GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
+  const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
   Reloc::Model RelocM = getTargetMachine().getRelocationModel();
   if (RelocM == Reloc::PIC_) {
     bool UseGOTOFF = GV->hasLocalLinkage() || GV->hasHiddenVisibility();
@@ -1454,7 +1454,7 @@ SDValue ARMTargetLowering::LowerGlobalAddressDarwin(SDValue Op,
   unsigned ARMPCLabelIndex = 0;
   EVT PtrVT = getPointerTy();
   DebugLoc dl = Op.getDebugLoc();
-  GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
+  const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
   Reloc::Model RelocM = getTargetMachine().getRelocationModel();
   SDValue CPAddr;
   if (RelocM == Reloc::Static)
@@ -1850,7 +1850,7 @@ static bool isFloatingPointZero(SDValue Op) {
     if (Op.getOperand(1).getOpcode() == ARMISD::Wrapper) {
       SDValue WrapperOp = Op.getOperand(1).getOperand(0);
       if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(WrapperOp))
-        if (ConstantFP *CFP = dyn_cast<ConstantFP>(CP->getConstVal()))
+        if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CP->getConstVal()))
           return CFP->getValueAPF().isPosZero();
     }
   }
diff --git a/lib/Target/ARM/ARMSubtarget.cpp b/lib/Target/ARM/ARMSubtarget.cpp
index 9e55cd8700..b11580a65c 100644
--- a/lib/Target/ARM/ARMSubtarget.cpp
+++ b/lib/Target/ARM/ARMSubtarget.cpp
@@ -116,7 +116,8 @@ ARMSubtarget::ARMSubtarget(const std::string &TT, const std::string &FS,
 
 /// GVIsIndirectSymbol - true if the GV will be accessed via an indirect symbol.
 bool
-ARMSubtarget::GVIsIndirectSymbol(GlobalValue *GV, Reloc::Model RelocM) const {
+ARMSubtarget::GVIsIndirectSymbol(const GlobalValue *GV,
+                                 Reloc::Model RelocM) const {
   if (RelocM == Reloc::Static)
     return false;
 
diff --git a/lib/Target/ARM/ARMSubtarget.h b/lib/Target/ARM/ARMSubtarget.h
index fa56a9195b..288a19a457 100644
--- a/lib/Target/ARM/ARMSubtarget.h
+++ b/lib/Target/ARM/ARMSubtarget.h
@@ -160,7 +160,7 @@ protected:
 
   /// GVIsIndirectSymbol - true if the GV will be accessed via an indirect
   /// symbol.
-  bool GVIsIndirectSymbol(GlobalValue *GV, Reloc::Model RelocM) const;
+  bool GVIsIndirectSymbol(const GlobalValue *GV, Reloc::Model RelocM) const;
 };
 } // End llvm namespace
 
diff --git a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
index 6657d1f10d..f17a5dd461 100644
--- a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
@@ -239,7 +239,7 @@ namespace {
       } else if (ACPV->isBlockAddress()) {
         O << *GetBlockAddressSymbol(ACPV->getBlockAddress());
       } else if (ACPV->isGlobalValue()) {
-        GlobalValue *GV = ACPV->getGV();
+        const GlobalValue *GV = ACPV->getGV();
         bool isIndirect = Subtarget->isTargetDarwin() &&
           Subtarget->GVIsIndirectSymbol(GV, TM.getRelocationModel());
         if (!isIndirect)
@@ -352,7 +352,7 @@ void ARMAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
     return;
   case MachineOperand::MO_GlobalAddress: {
     bool isCallOp = Modifier && !strcmp(Modifier, "call");
-    GlobalValue *GV = MO.getGlobal();
+    const GlobalValue *GV = MO.getGlobal();
 
     if ((Modifier && strcmp(Modifier, "lo16") == 0) ||
         (TF & ARMII::MO_LO16))
diff --git a/lib/Target/ARM/Thumb1RegisterInfo.cpp b/lib/Target/ARM/Thumb1RegisterInfo.cpp
index a5dfcb34f7..1cf86ac731 100644
--- a/lib/Target/ARM/Thumb1RegisterInfo.cpp
+++ b/lib/Target/ARM/Thumb1RegisterInfo.cpp
@@ -56,7 +56,7 @@ void Thumb1RegisterInfo::emitLoadConstPool(MachineBasicBlock &MBB,
                                            unsigned PredReg) const {
   MachineFunction &MF = *MBB.getParent();
   MachineConstantPool *ConstantPool = MF.getConstantPool();
-  Constant *C = ConstantInt::get(
+  const Constant *C = ConstantInt::get(
           Type::getInt32Ty(MBB.getParent()->getFunction()->getContext()), Val);
   unsigned Idx = ConstantPool->getConstantPoolIndex(C, 4);
 
diff --git a/lib/Target/ARM/Thumb2RegisterInfo.cpp b/lib/Target/ARM/Thumb2RegisterInfo.cpp
index f24d3e256f..07dd0be078 100644
--- a/lib/Target/ARM/Thumb2RegisterInfo.cpp
+++ b/lib/Target/ARM/Thumb2RegisterInfo.cpp
@@ -52,7 +52,7 @@ void Thumb2RegisterInfo::emitLoadConstPool(MachineBasicBlock &MBB,
                                            unsigned PredReg) const {
   MachineFunction &MF = *MBB.getParent();
   MachineConstantPool *ConstantPool = MF.getConstantPool();
-  Constant *C = ConstantInt::get(
+  const Constant *C = ConstantInt::get(
            Type::getInt32Ty(MBB.getParent()->getFunction()->getContext()), Val);
   unsigned Idx = ConstantPool->getConstantPoolIndex(C, 4);