eliminate CallInst::ArgOffset

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108522 91177308-0d34-0410-b5e6-96231b3b80d8

8 files changed, 37 insertions, 44 deletions

diff --git a/include/llvm/Instructions.h b/include/llvm/Instructions.h
index af93a29..e279b34 100644
--- a/include/llvm/Instructions.h
+++ b/include/llvm/Instructions.h
@@ -964,10 +964,9 @@ public:
 # undef protected
 public:
 
-  enum { ArgOffset = 0 }; ///< temporary, do not use for new code!
   unsigned getNumArgOperands() const { return getNumOperands() - 1; }
-  Value *getArgOperand(unsigned i) const { return getOperand(i + ArgOffset); }
-  void setArgOperand(unsigned i, Value *v) { setOperand(i + ArgOffset, v); }
+  Value *getArgOperand(unsigned i) const { return getOperand(i); }
+  void setArgOperand(unsigned i, Value *v) { setOperand(i, v); }
 
   /// getCallingConv/setCallingConv - Get or set the calling convention of this
   /// function call.
@@ -1056,17 +1055,17 @@ public:
   /// indirect function invocation.
   ///
   Function *getCalledFunction() const {
-    return dyn_cast<Function>(Op<ArgOffset -1>());
+    return dyn_cast<Function>(Op<-1>());
   }
 
   /// getCalledValue - Get a pointer to the function that is invoked by this
   /// instruction.
-  const Value *getCalledValue() const { return Op<ArgOffset -1>(); }
-        Value *getCalledValue()       { return Op<ArgOffset -1>(); }
+  const Value *getCalledValue() const { return Op<-1>(); }
+        Value *getCalledValue()       { return Op<-1>(); }
 
   /// setCalledFunction - Set the function called.
   void setCalledFunction(Value* Fn) {
-    Op<ArgOffset -1>() = Fn;
+    Op<-1>() = Fn;
   }
 
   // Methods for support type inquiry through isa, cast, and dyn_cast:
diff --git a/include/llvm/Support/CallSite.h b/include/llvm/Support/CallSite.h
index 38ee08b..cce000d 100644
--- a/include/llvm/Support/CallSite.h
+++ b/include/llvm/Support/CallSite.h
@@ -254,18 +254,16 @@ public:
 
 private:
   /// Returns the operand number of the first argument
+  /// FIXME: remove this func!
   unsigned getArgumentOffset() const {
-    if (isCall())
-      return CallInst::ArgOffset; // Skip Function (ATM)
-    else
-      return 0; // Args are at the front
+    return 0; // Args are at the front
   }
 
   unsigned getArgumentEndOffset() const {
     if (isCall())
-      return CallInst::ArgOffset ? 0 : 1; // Unchanged (ATM)
+      return 1; // Skip Callee
     else
-      return 3; // Skip BB, BB, Function
+      return 3; // Skip BB, BB, Callee
   }
 
   IterTy getCallee() const {
@@ -273,11 +271,9 @@ private:
       // of the op_*() functions here. See CallSite::getCallee.
       //
     if (isCall())
-      return CallInst::ArgOffset
-             ? getInstruction()->op_begin() // Unchanged
-             : getInstruction()->op_end() - 1; // Skip Function
+      return getInstruction()->op_end() - 1; // Skip Callee
     else
-      return getInstruction()->op_end() - 3; // Skip BB, BB, Function
+      return getInstruction()->op_end() - 3; // Skip BB, BB, Callee
   }
 };
 
diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp
index 13d8f4d..0bf7967 100644
--- a/lib/Analysis/ConstantFolding.cpp
+++ b/lib/Analysis/ConstantFolding.cpp
@@ -778,9 +778,9 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opcode, const Type *DestTy,
   case Instruction::ICmp:
   case Instruction::FCmp: assert(0 && "Invalid for compares");
   case Instruction::Call:
-    if (Function *F = dyn_cast<Function>(Ops[CallInst::ArgOffset ? 0:NumOps-1]))
+    if (Function *F = dyn_cast<Function>(Ops[NumOps - 1]))
       if (canConstantFoldCallTo(F))
-        return ConstantFoldCall(F, Ops+CallInst::ArgOffset, NumOps-1);
+        return ConstantFoldCall(F, Ops, NumOps - 1);
     return 0;
   case Instruction::PtrToInt:
     // If the input is a inttoptr, eliminate the pair.  This requires knowing
diff --git a/lib/Transforms/InstCombine/InstCombineCalls.cpp b/lib/Transforms/InstCombine/InstCombineCalls.cpp
index 85251a8..61448d8 100644
--- a/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -772,13 +772,13 @@ protected:
     NewInstruction = IC->ReplaceInstUsesWith(*CI, With);
   }
   bool isFoldable(unsigned SizeCIOp, unsigned SizeArgOp, bool isString) const {
-    if (ConstantInt *SizeCI = dyn_cast<ConstantInt>(CI->getArgOperand(SizeCIOp - CallInst::ArgOffset))) {
+    if (ConstantInt *SizeCI = dyn_cast<ConstantInt>(CI->getArgOperand(SizeCIOp))) {
       if (SizeCI->isAllOnesValue())
         return true;
       if (isString)
         return SizeCI->getZExtValue() >=
-               GetStringLength(CI->getArgOperand(SizeArgOp - CallInst::ArgOffset));
-      if (ConstantInt *Arg = dyn_cast<ConstantInt>(CI->getArgOperand(SizeArgOp - CallInst::ArgOffset)))
+               GetStringLength(CI->getArgOperand(SizeArgOp));
+      if (ConstantInt *Arg = dyn_cast<ConstantInt>(CI->getArgOperand(SizeArgOp)))
         return SizeCI->getZExtValue() >= Arg->getZExtValue();
     }
     return false;
diff --git a/lib/Transforms/Scalar/CodeGenPrepare.cpp b/lib/Transforms/Scalar/CodeGenPrepare.cpp
index 272066c..960ef1e 100644
--- a/lib/Transforms/Scalar/CodeGenPrepare.cpp
+++ b/lib/Transforms/Scalar/CodeGenPrepare.cpp
@@ -548,9 +548,9 @@ protected:
     CI->eraseFromParent();
   }
   bool isFoldable(unsigned SizeCIOp, unsigned, bool) const {
-      if (ConstantInt *SizeCI = dyn_cast<ConstantInt>(CI->getArgOperand(SizeCIOp
-                                                        - CallInst::ArgOffset)))
-      return SizeCI->isAllOnesValue();
+      if (ConstantInt *SizeCI =
+                             dyn_cast<ConstantInt>(CI->getArgOperand(SizeCIOp)))
+        return SizeCI->isAllOnesValue();
     return false;
   }
 };
diff --git a/lib/Transforms/Scalar/ScalarReplAggregates.cpp b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
index dd445f6..8fb2e58 100644
--- a/lib/Transforms/Scalar/ScalarReplAggregates.cpp
+++ b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
@@ -969,7 +969,7 @@ void SROA::isSafeForScalarRepl(Instruction *I, AllocaInst *AI, uint64_t Offset,
       ConstantInt *Length = dyn_cast<ConstantInt>(MI->getLength());
       if (Length)
         isSafeMemAccess(AI, Offset, Length->getZExtValue(), 0,
-                        UI.getOperandNo() == CallInst::ArgOffset, Info);
+                        UI.getOperandNo() == 0, Info);
       else
         MarkUnsafe(Info);
     } else if (LoadInst *LI = dyn_cast<LoadInst>(User)) {
@@ -1787,7 +1787,7 @@ static bool isOnlyCopiedFromConstantGlobal(Value *V, MemTransferInst *&TheCopy,
     if (isOffset) return false;
 
     // If the memintrinsic isn't using the alloca as the dest, reject it.
-    if (UI.getOperandNo() != CallInst::ArgOffset) return false;
+    if (UI.getOperandNo() != 0) return false;
     
     // If the source of the memcpy/move is not a constant global, reject it.
     if (!PointsToConstantGlobal(MI->getSource()))
diff --git a/lib/Transforms/Utils/BuildLibCalls.cpp b/lib/Transforms/Utils/BuildLibCalls.cpp
index 7a9d007..2a16106 100644
--- a/lib/Transforms/Utils/BuildLibCalls.cpp
+++ b/lib/Transforms/Utils/BuildLibCalls.cpp
@@ -421,7 +421,7 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) {
         FT->getParamType(3) != TD->getIntPtrType(Context))
       return false;
 
-    if (isFoldable(3 + CallInst::ArgOffset, 2 + CallInst::ArgOffset, false)) {
+    if (isFoldable(3, 2, false)) {
       EmitMemCpy(CI->getArgOperand(0), CI->getArgOperand(1), CI->getArgOperand(2),
                  1, false, B, TD);
       replaceCall(CI->getArgOperand(0));
@@ -444,7 +444,7 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) {
         FT->getParamType(3) != TD->getIntPtrType(Context))
       return false;
 
-    if (isFoldable(3 + CallInst::ArgOffset, 2 + CallInst::ArgOffset, false)) {
+    if (isFoldable(3, 2, false)) {
       EmitMemMove(CI->getArgOperand(0), CI->getArgOperand(1), CI->getArgOperand(2),
                   1, false, B, TD);
       replaceCall(CI->getArgOperand(0));
@@ -462,7 +462,7 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) {
         FT->getParamType(3) != TD->getIntPtrType(Context))
       return false;
 
-    if (isFoldable(3 + CallInst::ArgOffset, 2 + CallInst::ArgOffset, false)) {
+    if (isFoldable(3, 2, false)) {
       Value *Val = B.CreateIntCast(CI->getArgOperand(1), B.getInt8Ty(),
                                    false);
       EmitMemSet(CI->getArgOperand(0), Val,  CI->getArgOperand(2), false, B, TD);
@@ -487,7 +487,7 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) {
     // st[rp]cpy_chk call which may fail at runtime if the size is too long.
     // TODO: It might be nice to get a maximum length out of the possible
     // string lengths for varying.
-    if (isFoldable(2 + CallInst::ArgOffset, 1 + CallInst::ArgOffset, true)) {
+    if (isFoldable(2, 1, true)) {
       Value *Ret = EmitStrCpy(CI->getArgOperand(0), CI->getArgOperand(1), B, TD,
                               Name.substr(2, 6));
       replaceCall(Ret);
@@ -505,7 +505,7 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) {
         FT->getParamType(3) != TD->getIntPtrType(Context))
       return false;
 
-    if (isFoldable(3 + CallInst::ArgOffset, 2 + CallInst::ArgOffset, false)) {
+    if (isFoldable(3, 2, false)) {
       Value *Ret = EmitStrNCpy(CI->getArgOperand(0), CI->getArgOperand(1),
                                CI->getArgOperand(2), B, TD, Name.substr(2, 7));
       replaceCall(Ret);
diff --git a/lib/VMCore/Instructions.cpp b/lib/VMCore/Instructions.cpp
index c13696f..57b7f3f 100644
--- a/lib/VMCore/Instructions.cpp
+++ b/lib/VMCore/Instructions.cpp
@@ -33,10 +33,8 @@ using namespace llvm;
 User::op_iterator CallSite::getCallee() const {
   Instruction *II(getInstruction());
   return isCall()
-    ? (CallInst::ArgOffset
-       ? cast</*FIXME: CallInst*/User>(II)->op_begin()
-       : cast</*FIXME: CallInst*/User>(II)->op_end() - 1)
-    : cast<InvokeInst>(II)->op_end() - 3; // Skip BB, BB, Function
+    ? cast</*FIXME: CallInst*/User>(II)->op_end() - 1 // Skip Callee
+    : cast<InvokeInst>(II)->op_end() - 3; // Skip BB, BB, Callee
 }
 
 //===----------------------------------------------------------------------===//
@@ -233,7 +231,7 @@ CallInst::~CallInst() {
 
 void CallInst::init(Value *Func, Value* const *Params, unsigned NumParams) {
   assert(NumOperands == NumParams+1 && "NumOperands not set up?");
-  Op<ArgOffset -1>() = Func;
+  Op<-1>() = Func;
 
   const FunctionType *FTy =
     cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
@@ -246,15 +244,15 @@ void CallInst::init(Value *Func, Value* const *Params, unsigned NumParams) {
     assert((i >= FTy->getNumParams() || 
             FTy->getParamType(i) == Params[i]->getType()) &&
            "Calling a function with a bad signature!");
-    OperandList[i + ArgOffset] = Params[i];
+    OperandList[i] = Params[i];
   }
 }
 
 void CallInst::init(Value *Func, Value *Actual1, Value *Actual2) {
   assert(NumOperands == 3 && "NumOperands not set up?");
-  Op<ArgOffset -1>() = Func;
-  Op<ArgOffset + 0>() = Actual1;
-  Op<ArgOffset + 1>() = Actual2;
+  Op<-1>() = Func;
+  Op<0>() = Actual1;
+  Op<1>() = Actual2;
 
   const FunctionType *FTy =
     cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
@@ -273,8 +271,8 @@ void CallInst::init(Value *Func, Value *Actual1, Value *Actual2) {
 
 void CallInst::init(Value *Func, Value *Actual) {
   assert(NumOperands == 2 && "NumOperands not set up?");
-  Op<ArgOffset -1>() = Func;
-  Op<ArgOffset + 0>() = Actual;
+  Op<-1>() = Func;
+  Op<0>() = Actual;
 
   const FunctionType *FTy =
     cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
@@ -290,7 +288,7 @@ void CallInst::init(Value *Func, Value *Actual) {
 
 void CallInst::init(Value *Func) {
   assert(NumOperands == 1 && "NumOperands not set up?");
-  Op<ArgOffset -1>() = Func;
+  Op<-1>() = Func;
 
   const FunctionType *FTy =
     cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());