[Mlir-commits] [mlir] [mlir][x86vector] AVX Convert/Broadcast BF16 to F32 instructions (PR #135143)

[llvmlistbot at llvm.org]

================
@@ -408,4 +408,110 @@ def DotOp : AVX_LowOp<"dot", [Pure,
   }];
 }
 
+
+//----------------------------------------------------------------------------//
+// AVX: Convert packed BF16 even-indexed/odd-indexed elements into packed F32
+//----------------------------------------------------------------------------//
+
+def CvtPackedEvenIndexedBF16ToF32Op : AVX_Op<"cvt.packed.even.indexed.bf16_to_f32", [Pure,
+  DeclareOpInterfaceMethods<OneToOneIntrinsicOpInterface>]> {
+  let summary = "AVX: Convert packed BF16 even-indexed elements into packed F32 Data.";
+  let description = [{
+    #### From the Intel Intrinsics Guide:
+
+    Convert packed BF16 (16-bit) floating-point even-indexed elements stored at
+    memory locations starting at location `__A` to packed single-precision
+    (32-bit) floating-point elements, and store the results in `dst`.
+
+    Example:
+    ```mlir
+    %dst = x86vector.avx.cvt.packed.even.indexed.bf16_to_f32 %a : !llvm.ptr -> vector<8xf32>
+    ```
+  }];
+  let arguments = (ins LLVM_AnyPointer:$a);
+  let results = (outs VectorOfLengthAndType<[4, 8], [F32]>:$dst);
+  let assemblyFormat =
+    "$a  attr-dict`:` type($a)`->` type($dst)";
+
+  let extraClassDefinition = [{
+    std::string $cppClass::getIntrinsicName() {
+      std::string intr = "llvm.x86.vcvtneebf162ps";
+      VectorType vecType = getDst().getType();
+      unsigned elemBitWidth = vecType.getElementTypeBitWidth();
+      unsigned opBitWidth = vecType.getShape()[0] * elemBitWidth;
+      intr += std::to_string(opBitWidth);
+      return intr;
+    }
+  }];
+}
+
+def CvtPackedOddIndexedBF16ToF32Op : AVX_Op<"cvt.packed.odd.indexed.bf16_to_f32", [Pure,
+  DeclareOpInterfaceMethods<OneToOneIntrinsicOpInterface>]> {
+  let summary = "AVX: Convert packed BF16 odd-indexed elements into packed F32 Data.";
+  let description = [{
+    #### From the Intel Intrinsics Guide:
+
+    Convert packed BF16 (16-bit) floating-point odd-indexed elements stored at
+    memory locations starting at location `__A` to packed single-precision
+    (32-bit) floating-point elements, and store the results in `dst`.
+
+    Example:
+    ```mlir
+    %dst = x86vector.avx.cvt.packed.odd.indexed.bf16_to_f32 %a : !llvm.ptr -> vector<8xf32>
+    ```
+  }];
+  let arguments = (ins LLVM_AnyPointer:$a);
----------------
arun-thmn wrote:

Switched to `memrefs`. Please do have a look.

https://github.com/llvm/llvm-project/pull/135143