================
@@ -4592,9 +4608,20 @@ def CIR_ArrayCtor : CIR_Op<"array.ctor"> {
$_state.addOperands(ValueRange{addr});
$_builder.createBlock(r);
regionBuilder($_builder, $_state.location);
+ }]>,
+ // Dynamic form: addr is ptr<T>, num_elements is the runtime count.
+ OpBuilder<(ins "mlir::Value":$addr, "mlir::Value":$num_elements,
+ "llvm::function_ref<void(mlir::OpBuilder &,
mlir::Location)>":$regionBuilder), [{
+ assert(regionBuilder && "builder callback expected");
----------------
andykaylor wrote:
I don't think we should attempt that level of constant folding in the front
end. We get the array length as an l-value. To constant fold it, we'd have to
look back at where it was written and infer the constant from that. That's kind
of trivial, but I don't see much value in it at this stage.
https://github.com/llvm/llvm-project/pull/190656
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