[VPlan] Make VPBuilder APIs uniformly take ArrayRef (NFC) (#151484)

Author: artagnon

llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h

@@ -170,8 +170,7 @@ class VPBuilder {
         new VPInstruction(Opcode, Operands, Flags, DL, Name));
   }
 
-  VPInstruction *createNaryOp(unsigned Opcode,
-                              std::initializer_list<VPValue *> Operands,
+  VPInstruction *createNaryOp(unsigned Opcode, ArrayRef<VPValue *> Operands,
                               Type *ResultTy, const VPIRFlags &Flags = {},
                               DebugLoc DL = DebugLoc::getUnknown(),
                               const Twine &Name = "") {
@@ -180,7 +179,7 @@ class VPBuilder {
   }
 
   VPInstruction *createOverflowingOp(unsigned Opcode,
-                                     std::initializer_list<VPValue *> Operands,
+                                     ArrayRef<VPValue *> Operands,
                                      VPRecipeWithIRFlags::WrapFlagsTy WrapFlags,
                                      DebugLoc DL = DebugLoc::getUnknown(),
                                      const Twine &Name = "") {