[examples] Fix llvm.memset prototype in BrainF example.

Commit 1e68724 removed the alignment
argument from the memset intrinsic. Update the BrainF example to match.

Reviewed By: jyknight
Differential Revision: https://reviews.llvm.org/D79601

llvm/examples/BrainF/BrainF.cpp

@@ -66,7 +66,7 @@ void BrainF::header(LLVMContext& C) {
 
   //Function prototypes
 
-  //declare void @llvm.memset.p0i8.i32(i8 *, i8, i32, i32, i1)
+  //declare void @llvm.memset.p0i8.i32(i8 *, i8, i32, i1)
   Type *Tys[] = { Type::getInt8PtrTy(C), Type::getInt32Ty(C) };
   Function *memset_func = Intrinsic::getDeclaration(module, Intrinsic::memset,
                                                     Tys);
@@ -98,13 +98,12 @@ void BrainF::header(LLVMContext& C) {
                                    nullptr, "arr");
   BB->getInstList().push_back(cast<Instruction>(ptr_arr));
 
-  //call void @llvm.memset.p0i8.i32(i8 *%arr, i8 0, i32 %d, i32 1, i1 0)
+  //call void @llvm.memset.p0i8.i32(i8 *%arr, i8 0, i32 %d, i1 0)
   {
     Value *memset_params[] = {
       ptr_arr,
       ConstantInt::get(C, APInt(8, 0)),
       val_mem,
-      ConstantInt::get(C, APInt(32, 1)),
       ConstantInt::get(C, APInt(1, 0))
     };