[Mlir-commits] [mlir] [mlir][Vector] Support mixed mode vector.contract lowering (PR #117753)

[Jakub Kuderski]

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@@ -80,6 +80,22 @@ static AffineMap adjustMap(AffineMap map, int64_t index,
   return AffineMap::get(map.getNumDims() - 1, 0, results, ctx);
 }
 
+Value promoteToElementType(Location loc, RewriterBase &rewriter, Value v,
+                           Type dstElementType) {
+  Type elementType = v.getType();
+  auto vecType = dyn_cast<VectorType>(elementType);
+  if (vecType)
+    elementType = vecType.getElementType();
+  if (elementType == dstElementType)
+    return v;
+  Type promotedType = dstElementType;
+  if (vecType)
+    promotedType = vecType.clone(promotedType);
+  if (isa<FloatType>(dstElementType))
+    return rewriter.create<arith::ExtFOp>(loc, promotedType, v);
+  return rewriter.create<arith::ExtSIOp>(loc, promotedType, v);
+}
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kuhar wrote:

Are there cases when we need to truncate to the dstType?

https://github.com/llvm/llvm-project/pull/117753