Move ComputeMaskedBits, MaskedValueIsZero, and ComputeNumSignBits from
TargetLowering to SelectionDAG so that they have more convenient
access to the current DAG, in preparation for the ValueType routines
being changed from standalone functions to members of SelectionDAG for
the pre-legalize vector type changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37704 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Sparc/SparcISelDAGToDAG.cpp b/lib/Target/Sparc/SparcISelDAGToDAG.cpp
index 7275ce6..7a093f0 100644
--- a/lib/Target/Sparc/SparcISelDAGToDAG.cpp
+++ b/lib/Target/Sparc/SparcISelDAGToDAG.cpp
@@ -112,6 +112,7 @@
                                                 uint64_t Mask,
                                                 uint64_t &KnownZero, 
                                                 uint64_t &KnownOne,
+                                                const SelectionDAG &DAG,
                                                 unsigned Depth = 0) const;
     
     virtual std::vector<SDOperand>
@@ -261,6 +262,7 @@
                                                          uint64_t Mask,
                                                          uint64_t &KnownZero, 
                                                          uint64_t &KnownOne,
+                                                         const SelectionDAG &DAG,
                                                          unsigned Depth) const {
   uint64_t KnownZero2, KnownOne2;
   KnownZero = KnownOne = 0;   // Don't know anything.
@@ -269,8 +271,10 @@
   default: break;
   case SPISD::SELECT_ICC:
   case SPISD::SELECT_FCC:
-    ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne, Depth+1);
-    ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero2, KnownOne2, Depth+1);
+    DAG.ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne,
+                          Depth+1);
+    DAG.ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero2, KnownOne2,
+                          Depth+1);
     assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?"); 
     assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");