[Mlir-commits] [mlir] [mlir][transform] Add transform.get_operand op (PR #78397)

[Oleksandr Alex Zinenko]

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@@ -1464,6 +1464,35 @@ transform::GetProducerOfOperand::apply(transform::TransformRewriter &rewriter,
   return DiagnosedSilenceableFailure::success();
 }
 
+//===----------------------------------------------------------------------===//
+// GetOperandOp
+//===----------------------------------------------------------------------===//
+
+DiagnosedSilenceableFailure
+transform::GetOperandOp::apply(transform::TransformRewriter &rewriter,
+                               transform::TransformResults &results,
+                               transform::TransformState &state) {
+  std::optional<int64_t> maybeOperandNumber = getOperandNumber();
+  SmallVector<Value> operands;
+  for (Operation *target : state.getPayloadOps(getTarget())) {
+    if (!maybeOperandNumber) {
+      for (Value operand : target->getOperands())
+        operands.push_back(operand);
+      continue;
+    }
+    int64_t operandNumber = *maybeOperandNumber;
+    if (operandNumber >= target->getNumOperands()) {
+      DiagnosedSilenceableFailure diag =
+          emitSilenceableError() << "targeted op does not have enough operands";
----------------
ftynse wrote:

Nit: this can be more helpful if it tells how many operands were requested and how many operands does the op actually have.

https://github.com/llvm/llvm-project/pull/78397