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

[llvmlistbot at llvm.org]

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@@ -292,6 +296,100 @@ emulatedVectorLoad(OpBuilder &rewriter, Location loc, Value base,
       newLoad);
 }
 
+/// Downcast two values to `downcastType`, then select values
+/// based on `mask`, and casts the result to `upcastType`.
+static Value downcastSelectAndUpcast(OpBuilder &builder, Location loc,
+                                     VectorType downcastType,
+                                     VectorType upcastType, Value mask,
+                                     Value trueValue, Value falseValue) {
+  assert(
+      downcastType.getNumElements() * downcastType.getElementTypeBitWidth() ==
+          upcastType.getNumElements() * upcastType.getElementTypeBitWidth() &&
+      "expected upcastType size to be twice the size of downcastType");
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lialan wrote:

Sorry, I have to admit the message was generated by copilot and I overlooked it. 

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