[llvm] [DirectX] Update "dx.TypedBuffer" docs to include a "signed" bit (PR #100695)

[Joshua Batista via llvm-commits]

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@@ -197,23 +200,23 @@ Examples:
 .. code-block:: llvm
 
    ; RWBuffer<float4> Buf : register(u5, space3)
-   %buf = call target("dx.TypedBuffer", float, 1, 0)
+   %buf = call target("dx.TypedBuffer", <4 x float>, 1, 0, 0)
                @llvm.dx.handle.fromBinding.tdx.TypedBuffer_f32_1_0(
                    i32 3, i32 5, i32 1, i32 0, i1 false)
 
-   ; RWBuffer<uint> Buf : register(u7, space2)
-   %buf = call target("dx.TypedBuffer", i32, 1, 0)
+   ; RWBuffer<int> Buf : register(u7, space2)
+   %buf = call target("dx.TypedBuffer", i32, 1, 0, 1)
----------------
bob80905 wrote:

You say in this doc that `IsSigned` is an extra parameter, but that param is only present for `TypedBuffer`. Yet, I see a new parameter here.
Maybe you meant to write somewhere that RWBuffers are represented as TypedBuffers? Should that be made explicit? (Like you specified with ByteAddressBuffers above).
Otherwise, shouldn't we specify that RWBuffers also get an extra parameter, `IsSigned`?

https://github.com/llvm/llvm-project/pull/100695