For PR1064:

Implement the arbitrary bit-width integer feature. The feature allows
integers of any bitwidth (up to 64) to be defined instead of just 1, 8,
16, 32, and 64 bit integers.

This change does several things:
1. Introduces a new Derived Type, IntegerType, to represent the number of
   bits in an integer. The Type classes SubclassData field is used to
   store the number of bits. This allows 2^23 bits in an integer type.
2. Removes the five integer Type::TypeID values for the 1, 8, 16, 32 and
   64-bit integers. These are replaced with just IntegerType which is not
   a primitive any more.
3. Adjust the rest of LLVM to account for this change.

Note that while this incremental change lays the foundation for arbitrary
bit-width integers, LLVM has not yet been converted to actually deal with
them in any significant way. Most optimization passes, for example, will
still only deal with the byte-width integer types.  Future increments
will rectify this situation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33113 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 36 insertions, 1 deletions

diff --git a/lib/ExecutionEngine/Interpreter/Interpreter.h b/lib/ExecutionEngine/Interpreter/Interpreter.h
index 559c7dc505..c62249bdb9 100644
--- a/lib/ExecutionEngine/Interpreter/Interpreter.h
+++ b/lib/ExecutionEngine/Interpreter/Interpreter.h
@@ -144,7 +144,18 @@ public:
   void visitStoreInst(StoreInst &I);
   void visitGetElementPtrInst(GetElementPtrInst &I);
   void visitPHINode(PHINode &PN) { assert(0 && "PHI nodes already handled!"); }
-  void visitCastInst(CastInst &I);
+  void visitTruncInst(TruncInst &I);
+  void visitZExtInst(ZExtInst &I);
+  void visitSExtInst(SExtInst &I);
+  void visitFPTruncInst(FPTruncInst &I);
+  void visitFPExtInst(FPExtInst &I);
+  void visitUIToFPInst(UIToFPInst &I);
+  void visitSIToFPInst(SIToFPInst &I);
+  void visitFPToUIInst(FPToUIInst &I);
+  void visitFPToSIInst(FPToSIInst &I);
+  void visitPtrToIntInst(PtrToIntInst &I);
+  void visitIntToPtrInst(IntToPtrInst &I);
+  void visitBitCastInst(BitCastInst &I);
   void visitSelectInst(SelectInst &I);
 
 
@@ -193,6 +204,30 @@ private:  // Helper functions
   void initializeExternalFunctions();
   GenericValue getConstantExprValue(ConstantExpr *CE, ExecutionContext &SF);
   GenericValue getOperandValue(Value *V, ExecutionContext &SF);
+  GenericValue executeTruncInst(Value *SrcVal, const Type *DstTy,
+                                ExecutionContext &SF);
+  GenericValue executeSExtInst(Value *SrcVal, const Type *DstTy,
+                               ExecutionContext &SF);
+  GenericValue executeZExtInst(Value *SrcVal, const Type *DstTy,
+                               ExecutionContext &SF);
+  GenericValue executeFPTruncInst(Value *SrcVal, const Type *DstTy,
+                                  ExecutionContext &SF);
+  GenericValue executeFPExtInst(Value *SrcVal, const Type *DstTy,
+                                ExecutionContext &SF);
+  GenericValue executeFPToUIInst(Value *SrcVal, const Type *DstTy,
+                                 ExecutionContext &SF);
+  GenericValue executeFPToSIInst(Value *SrcVal, const Type *DstTy,
+                                 ExecutionContext &SF);
+  GenericValue executeUIToFPInst(Value *SrcVal, const Type *DstTy,
+                                 ExecutionContext &SF);
+  GenericValue executeSIToFPInst(Value *SrcVal, const Type *DstTy,
+                                 ExecutionContext &SF);
+  GenericValue executePtrToIntInst(Value *SrcVal, const Type *DstTy,
+                                   ExecutionContext &SF);
+  GenericValue executeIntToPtrInst(Value *SrcVal, const Type *DstTy,
+                                   ExecutionContext &SF);
+  GenericValue executeBitCastInst(Value *SrcVal, const Type *DstTy,
+                                  ExecutionContext &SF);
   GenericValue executeCastOperation(Instruction::CastOps opcode, Value *SrcVal, 
                                     const Type *Ty, ExecutionContext &SF);
   void popStackAndReturnValueToCaller(const Type *RetTy, GenericValue Result);