[llvm-commits] [llvm] r80262 - in /llvm/trunk: include/llvm/Analysis/ValueTracking.h lib/Analysis/ValueTracking.cpp

[Dan Gohman]

Author: djg
Date: Thu Aug 27 12:51:25 2009
New Revision: 80262

URL: http://llvm.org/viewvc/llvm-project?rev=80262&view=rev
Log:
Handle TargetData with const.

Modified:
    llvm/trunk/include/llvm/Analysis/ValueTracking.h
    llvm/trunk/lib/Analysis/ValueTracking.cpp

Modified: llvm/trunk/include/llvm/Analysis/ValueTracking.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Analysis/ValueTracking.h?rev=80262&r1=80261&r2=80262&view=diff

==============================================================================
--- llvm/trunk/include/llvm/Analysis/ValueTracking.h (original)
+++ llvm/trunk/include/llvm/Analysis/ValueTracking.h Thu Aug 27 12:51:25 2009
@@ -30,14 +30,14 @@
   /// bit sets.  This code only analyzes bits in Mask, in order to short-circuit
   /// processing.
   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.
   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 +48,7 @@
   ///
   /// '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 

Modified: llvm/trunk/lib/Analysis/ValueTracking.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/ValueTracking.cpp?rev=80262&r1=80261&r2=80262&view=diff

==============================================================================
--- llvm/trunk/lib/Analysis/ValueTracking.cpp (original)
+++ llvm/trunk/lib/Analysis/ValueTracking.cpp Thu Aug 27 12:51:25 2009
@@ -37,7 +37,7 @@
 /// this won't lose us code quality.
 void llvm::ComputeMaskedBits(Value *V, const APInt &Mask,
                              APInt &KnownZero, APInt &KnownOne,
-                             TargetData *TD, unsigned Depth) {
+                             const TargetData *TD, unsigned Depth) {
   const unsigned MaxDepth = 6;
   assert(V && "No Value?");
   assert(Depth <= MaxDepth && "Limit Search Depth");
@@ -609,7 +609,7 @@
 /// this predicate to simplify operations downstream.  Mask is known to be zero
 /// for bits that V cannot have.
 bool llvm::MaskedValueIsZero(Value *V, const APInt &Mask,
-                             TargetData *TD, unsigned Depth) {
+                             const TargetData *TD, unsigned Depth) {
   APInt KnownZero(Mask.getBitWidth(), 0), KnownOne(Mask.getBitWidth(), 0);
   ComputeMaskedBits(V, Mask, KnownZero, KnownOne, TD, Depth);
   assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?"); 
@@ -626,7 +626,8 @@
 ///
 /// 'Op' must have a scalar integer type.
 ///
-unsigned llvm::ComputeNumSignBits(Value *V, TargetData *TD, unsigned Depth) {
+unsigned llvm::ComputeNumSignBits(Value *V, const TargetData *TD,
+                                  unsigned Depth) {
   assert((TD || V->getType()->isIntOrIntVector()) &&
          "ComputeNumSignBits requires a TargetData object to operate "
          "on non-integer values!");