| //===- TestInlining.cpp - Pass to inline calls in the test dialect --------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // TODO(riverriddle) This pass is only necessary because the main inlining pass |
| // has no abstracted away the call+callee relationship. When the inlining |
| // interface has this support, this pass should be removed. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "TestDialect.h" |
| #include "mlir/Dialect/StandardOps/IR/Ops.h" |
| #include "mlir/IR/Function.h" |
| #include "mlir/Pass/Pass.h" |
| #include "mlir/Transforms/InliningUtils.h" |
| #include "mlir/Transforms/Passes.h" |
| #include "llvm/ADT/StringSet.h" |
| |
| using namespace mlir; |
| |
| namespace { |
| struct Inliner : public FunctionPass<Inliner> { |
| void runOnFunction() override { |
| auto function = getFunction(); |
| |
| // Collect each of the direct function calls within the module. |
| SmallVector<CallIndirectOp, 16> callers; |
| function.walk([&](CallIndirectOp caller) { callers.push_back(caller); }); |
| |
| // Build the inliner interface. |
| InlinerInterface interface(&getContext()); |
| |
| // Try to inline each of the call operations. |
| for (auto caller : callers) { |
| auto callee = dyn_cast_or_null<FunctionalRegionOp>( |
| caller.getCallee().getDefiningOp()); |
| if (!callee) |
| continue; |
| |
| // Inline the functional region operation, but only clone the internal |
| // region if there is more than one use. |
| if (failed(inlineRegion( |
| interface, &callee.body(), caller, |
| llvm::to_vector<8>(caller.getArgOperands()), |
| SmallVector<Value, 8>(caller.getResults()), caller.getLoc(), |
| /*shouldCloneInlinedRegion=*/!callee.getResult().hasOneUse()))) |
| continue; |
| |
| // If the inlining was successful then erase the call and callee if |
| // possible. |
| caller.erase(); |
| if (callee.use_empty()) |
| callee.erase(); |
| } |
| } |
| }; |
| } // end anonymous namespace |
| |
| namespace mlir { |
| void registerInliner() { |
| PassRegistration<Inliner>("test-inline", "Test inlining region calls"); |
| } |
| } // namespace mlir |