[VP] [NFC] Fix vp_store signature and vp_gather examples

[frasercrmck]

Oh my, sorry about that... LGTM

[loralb]

Thanks everybody! I do not have commit access, can anyone commit this for me?

[frasercrmck]

In D115027#3189266, @loralb wrote:

Thanks everybody! I do not have commit access, can anyone commit this for me?

Sure, no problem. Thanks for the patch!

llvm/docs/LangRef.rst

 is taken as the ABI alignment of the source addresses as specified by the
 :ref:`datalayout string<langref_datalayout>`.
 
 Examples:
 """""""""
 
 .. code-block:: text
 
-     %r = call void @llvm.vp.scatter.v8i8.v8p0i8(<8 x i8> %val, <8 x i8*> %ptrs, <8 x i1> %mask, i32 %evl)
+     %r = call <8 x i8> @llvm.vp.gather.v8i8.v8p0i8(<8 x i8*> %ptrs, <8 x i1> %mask, i32 %evl)
      ;; For all lanes below %evl, %r is lane-wise equivalent to %also.r
      ;; Note that since the alignment is ultimately up to the data layout
      ;; string, 8 is used as an example.
 
-     %also.r = call void @llvm.masked.scatter.v8i8.v8p0i8(<8 x i8> %val, <8 x i8*> %ptrs, i32 8, <8 x i1> %mask, <8 x i8> undef)
+     %also.r = call <8 x i8> @llvm.masked.gather.v8i8.v8p0i8(<8 x i8*> %ptrs, i32 8, <8 x i1> %mask, <8 x i8> undef)
 
 
 .. _int_vp_scatter:
 
 '``llvm.vp.scatter``' Intrinsic
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Syntax:

llvm/include/llvm/IR/VPIntrinsics.def

 // llvm.vp.frem(x,y,mask,vlen)
 HELPER_REGISTER_BINARY_FP_VP(frem, VP_FREM, FRem)
 
 #undef HELPER_REGISTER_BINARY_FP_VP
 
 ///// } Floating-Point Arithmetic
 
 ///// Memory Operations {
-// llvm.vp.store(ptr,val,mask,vlen)
+// llvm.vp.store(val,ptr,mask,vlen)
 BEGIN_REGISTER_VP_INTRINSIC(vp_store, 2, 3)
 // chain = VP_STORE chain,val,base,offset,mask,evl
 BEGIN_REGISTER_VP_SDNODE(VP_STORE, 0, vp_store, 4, 5)
 VP_PROPERTY_FUNCTIONAL_OPC(Store)
 VP_PROPERTY_FUNCTIONAL_INTRINSIC(masked_store)
 VP_PROPERTY_MEMOP(1, 0)
 END_REGISTER_VP(vp_store, VP_STORE)