split call handling out to InstCombineCalls.cpp

[oota-llvm.git] / lib / Transforms / InstCombine / InstCombine.h

diff --git a/lib/Transforms/InstCombine/InstCombine.h b/lib/Transforms/InstCombine/InstCombine.h
index d4d26f8e348bce7c1361896b326232ccbeab6f4b..e6ad1c73c25256e9d537f89a64c59289011f9969 100644 (file)
--- a/lib/Transforms/InstCombine/InstCombine.h
+++ b/lib/Transforms/InstCombine/InstCombine.h
@@ -32,6 +32,20 @@ enum SelectPatternFlavor {
   SPF_SMAX, SPF_UMAX
   //SPF_ABS - TODO.
 };
+  
+/// getComplexity:  Assign a complexity or rank value to LLVM Values...
+///   0 -> undef, 1 -> Const, 2 -> Other, 3 -> Arg, 3 -> Unary, 4 -> OtherInst
+static inline unsigned getComplexity(Value *V) {
+  if (isa<Instruction>(V)) {
+    if (BinaryOperator::isNeg(V) ||
+        BinaryOperator::isFNeg(V) ||
+        BinaryOperator::isNot(V))
+      return 3;
+    return 4;
+  }
+  if (isa<Argument>(V)) return 3;
+  return isa<Constant>(V) ? (isa<UndefValue>(V) ? 0 : 1) : 2;
+}
 
   
 /// InstCombineIRInserter - This is an IRBuilder insertion helper that works
@@ -179,6 +193,19 @@ public:
   Instruction *visitInstruction(Instruction &I) { return 0; }
 
 private:
+  bool ShouldChangeType(const Type *From, const Type *To) const;
+  Value *dyn_castNegVal(Value *V) const;
+  Value *dyn_castFNegVal(Value *V) const;
+  const Type *FindElementAtOffset(const Type *Ty, int64_t Offset, 
+                                  SmallVectorImpl<Value*> &NewIndices);
+  Instruction *FoldOpIntoSelect(Instruction &Op, SelectInst *SI);
+                                 
+  /// ValueRequiresCast - Return true if the cast from "V to Ty" actually
+  /// results in any code being generated.  It does not require codegen if V is
+  /// simple enough or if the cast can be folded into other casts.
+  bool ValueRequiresCast(Instruction::CastOps opcode,const Value *V,
+                         const Type *Ty);
+
   Instruction *visitCallSite(CallSite CS);
   bool transformConstExprCastCall(CallSite CS);
   Instruction *transformCallThroughTrampoline(CallSite CS);
@@ -186,7 +213,7 @@ private:
                                  bool DoXform = true);
   bool WillNotOverflowSignedAdd(Value *LHS, Value *RHS);
   DbgDeclareInst *hasOneUsePlusDeclare(Value *V);
-
+  Value *EmitGEPOffset(User *GEP);
 
 public:
   // InsertNewInstBefore - insert an instruction New before instruction Old