[SelectionDAG] Move SelectionDAG::getAllOnesConstant out of line. NFC (#102995)

This function has to get the scalar size and create an APInt. I don't
think it belongs inline.

Author: topperc

llvm/include/llvm/CodeGen/SelectionDAG.h

@@ -675,10 +675,7 @@ class SelectionDAG {
                       bool isTarget = false, bool isOpaque = false);
 
   SDValue getAllOnesConstant(const SDLoc &DL, EVT VT, bool IsTarget = false,
-                             bool IsOpaque = false) {
-    return getConstant(APInt::getAllOnes(VT.getScalarSizeInBits()), DL, VT,
-                       IsTarget, IsOpaque);
-  }
+                             bool IsOpaque = false);
 
   SDValue getConstant(const ConstantInt &Val, const SDLoc &DL, EVT VT,
                       bool isTarget = false, bool isOpaque = false);

llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

@@ -1748,6 +1748,12 @@ SDValue SelectionDAG::getConstant(const ConstantInt &Val, const SDLoc &DL,
   return Result;
 }
 
+SDValue SelectionDAG::getAllOnesConstant(const SDLoc &DL, EVT VT, bool IsTarget,
+                                         bool IsOpaque) {
+  return getConstant(APInt::getAllOnes(VT.getScalarSizeInBits()), DL, VT,
+                     IsTarget, IsOpaque);
+}
+
 SDValue SelectionDAG::getIntPtrConstant(uint64_t Val, const SDLoc &DL,
                                         bool isTarget) {
   return getConstant(Val, DL, TLI->getPointerTy(getDataLayout()), isTarget);