Move DataTypes.h to include/llvm/System, update all users. This breaks the last

[oota-llvm.git] / include / llvm / Analysis / ValueTracking.h

diff --git a/include/llvm/Analysis/ValueTracking.h b/include/llvm/Analysis/ValueTracking.h
index 1ebd9c26c4a3dac7f21e4fc9cd4836d93d88440b..f23360832436378dc1bffd82ea5c0b536e162955 100644 (file)
--- a/include/llvm/Analysis/ValueTracking.h
+++ b/include/llvm/Analysis/ValueTracking.h
@@ -15,7 +15,7 @@
 #ifndef LLVM_ANALYSIS_VALUETRACKING_H
 #define LLVM_ANALYSIS_VALUETRACKING_H
 
-#include "llvm/Support/DataTypes.h"
+#include "llvm/System/DataTypes.h"
 #include <string>
 
 namespace llvm {
@@ -29,15 +29,27 @@ namespace llvm {
   /// known to be either zero or one and return them in the KnownZero/KnownOne
   /// bit sets.  This code only analyzes bits in Mask, in order to short-circuit
   /// processing.
+  ///
+  /// This function is defined on values with integer type, values with pointer
+  /// type (but only if TD is non-null), and vectors of integers.  In the case
+  /// where V is a vector, the mask, known zero, and known one values are the
+  /// same width as the vector element, and the bit is set only if it is true
+  /// for all of the elements in the vector.
   void ComputeMaskedBits(Value *V, const APInt &Mask, APInt &KnownZero,
-                         APInt &KnownOne, TargetData *TD = 0,
+                         APInt &KnownOne, const TargetData *TD = 0,
                          unsigned Depth = 0);
   
   /// MaskedValueIsZero - Return true if 'V & Mask' is known to be zero.  We use
   /// this predicate to simplify operations downstream.  Mask is known to be
   /// zero for bits that V cannot have.
+  ///
+  /// This function is defined on values with integer type, values with pointer
+  /// type (but only if TD is non-null), and vectors of integers.  In the case
+  /// where V is a vector, the mask, known zero, and known one values are the
+  /// same width as the vector element, and the bit is set only if it is true
+  /// for all of the elements in the vector.
   bool MaskedValueIsZero(Value *V, const APInt &Mask, 
-                         TargetData *TD = 0, unsigned Depth = 0);
+                         const TargetData *TD = 0, unsigned Depth = 0);
 
   
   /// ComputeNumSignBits - Return the number of times the sign bit of the
@@ -48,7 +60,7 @@ namespace llvm {
   ///
   /// 'Op' must have a scalar integer type.
   ///
-  unsigned ComputeNumSignBits(Value *Op, TargetData *TD = 0,
+  unsigned ComputeNumSignBits(Value *Op, const TargetData *TD = 0,
                               unsigned Depth = 0);
 
   /// CannotBeNegativeZero - Return true if we can prove that the specified FP