[Mlir-commits] [mlir] [MLIR] Implement emulation of static indexing subbyte type vector stores (PR #115922)

[Andrzej Warzyński]

================
@@ -292,6 +296,89 @@ emulatedVectorLoad(OpBuilder &rewriter, Location loc, Value base,
       newLoad);
 }
 
+/// Selects values from two sources based on a mask, and casts the result to a
+/// new type.
+static Value selectAndCast(OpBuilder &builder, Location loc,
+                           VectorType castIntoType, Value mask, Value trueValue,
+                           Value falseValue) {
+  Value maskedValue =
+      builder.create<arith::SelectOp>(loc, mask, trueValue, falseValue);
+  return builder.create<vector::BitCastOp>(loc, castIntoType, maskedValue);
+}
+
+/// Emits `memref.generic_atomic_rmw` op to store a subbyte-sized value to a
+/// byte in memory, with a mask. The `valueToStore` is a vector of subbyte-sized
----------------
banach-space wrote:

[nit] 
```suggestion
/// byte in `linearizedMemref`, with a mask. The `valueToStore` is a vector of subbyte-sized
```

https://github.com/llvm/llvm-project/pull/115922