[Mlir-commits] [mlir] [mlir][AMDGPU] Add scaled floating point conversion ops fp8 (PR #141554)

[Umang Yadav]

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@@ -112,6 +112,38 @@ def AMDGPU_ExtPackedFp8Op :
   }];
 }
 
+def AMDGPU_ScaledExtPackedOp
+    : AMDGPU_Op<"scaled_ext_packed", [Pure]>,
+      Arguments<(
+          ins AnyTypeOf<[VectorOfLengthAndType<[2, 3, 4], [F8E5M2, F8E4M3FN]>,
+                         VectorOfLengthAndType<[2, 3, 4, 5, 6, 7, 8],
+                                               [F4E2M1FN]>]>:$source,
+          F32:$scale,
+          ConfinedAttr<I32Attr, [IntNonNegative, IntMaxValue<7>]>:$index)>,
+      Results<(
+          outs AnyTypeOf<[FixedVectorOfLengthAndType<[2], [F32]>,
+                          FixedVectorOfLengthAndType<[2], [F16]>,
+                          FixedVectorOfLengthAndType<[2], [BF16]>]>:$res)> {
+  let summary = "Extend a vector of packed floating point values";
+
+  let description = [{
+    Extend and scale two packed floats in `source[index]` to two floats and 
+    return them.
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umangyadav wrote:

I find this a bit confusing `source[index]` would only point to one element. How do we get two floats in return ?

https://github.com/llvm/llvm-project/pull/141554