| 1 | //===- UnstructuredControlFlow.cpp - Op Interface Helpers ----------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "mlir/Dialect/Bufferization/IR/UnstructuredControlFlow.h" |
| 10 | |
| 11 | using namespace mlir; |
| 12 | |
| 13 | SmallVector<OpOperand *> |
| 14 | mlir::bufferization::detail::getCallerOpOperands(BlockArgument bbArg) { |
| 15 | SmallVector<OpOperand *> result; |
| 16 | Block *block = bbArg.getOwner(); |
| 17 | for (Operation *caller : block->getUsers()) { |
| 18 | auto branchOp = dyn_cast<BranchOpInterface>(caller); |
| 19 | assert(branchOp && "expected that all callers implement BranchOpInterface"); |
| 20 | auto it = llvm::find(Range: caller->getSuccessors(), Val: block); |
| 21 | assert(it != caller->getSuccessors().end() && "could not find successor"); |
| 22 | int64_t successorIdx = std::distance(first: caller->getSuccessors().begin(), last: it); |
| 23 | SuccessorOperands operands = branchOp.getSuccessorOperands(successorIdx); |
| 24 | assert(operands.getProducedOperandCount() == 0 && |
| 25 | "produced operands not supported"); |
| 26 | int64_t operandIndex = |
| 27 | operands.getForwardedOperands().getBeginOperandIndex() + |
| 28 | bbArg.getArgNumber(); |
| 29 | result.push_back(&caller->getOpOperand(idx: operandIndex)); |
| 30 | } |
| 31 | return result; |
| 32 | } |
| 33 |