Convert SelectionDAG::ComputeMaskedBits to use APInt instead of uint64_t.
Add an overload that supports the uint64_t interface for use by clients
that haven't been updated yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47039 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index f61ecce..15e3f84 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -3458,13 +3458,12 @@
 //===----------------------------------------------------------------------===//
 
 void PPCTargetLowering::computeMaskedBitsForTargetNode(const SDOperand Op,
-                                                       uint64_t Mask,
-                                                       uint64_t &KnownZero, 
-                                                       uint64_t &KnownOne,
+                                                       APInt Mask,
+                                                       APInt &KnownZero, 
+                                                       APInt &KnownOne,
                                                        const SelectionDAG &DAG,
                                                        unsigned Depth) const {
-  KnownZero = 0;
-  KnownOne = 0;
+  KnownZero = KnownOne = APInt(Mask.getBitWidth(), 0);
   switch (Op.getOpcode()) {
   default: break;
   case PPCISD::LBRX: {