[Mlir-commits] [mlir] [rfc][mlir][gpu] Add operations to extract/insert/rotate within subgroup (PR #139048)

[llvmlistbot at llvm.org]

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@@ -1364,6 +1364,35 @@ def GPU_ShuffleOp : GPU_Op<
   ];
 }
 
+def GPU_RotateOp : GPU_Op<
+    "rotate", [Pure, AllTypesMatch<["value", "rotateResult"]>]>,
+    Arguments<(ins AnyIntegerOrFloatOr1DVector:$value, I32:$offset, I32:$width)>,
+    Results<(outs AnyIntegerOrFloatOr1DVector:$rotateResult)> {
+  let summary = "Rotate values within a subgroup.";
+  let description = [{
+    The "rotate" op moves values to a across lanes circularly (a.k.a.,
+    invocations, work items) within the same subgroup. The `width` argument
+    specifies the number of lanes that participate in the rotation, and must
+    be uniform across all lanes. Further, the first `width` lanes of the
----------------
SoftwareBoi wrote:

```suggestion
    be uniform across all lanes. Furthermore, the first `width` lanes of the
```
Or just remove `Further`?

https://github.com/llvm/llvm-project/pull/139048