be0a7e9f27
See D115115 and this mailing list discussion: https://lists.llvm.org/pipermail/llvm-dev/2021-December/154199.html Differential Revision: https://reviews.llvm.org/D115309
74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
//===- TestInlining.cpp - Pass to inline calls in the test dialect --------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// TODO: This pass is only necessary because the main inlining pass
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// has no abstracted away the call+callee relationship. When the inlining
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// interface has this support, this pass should be removed.
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//
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//===----------------------------------------------------------------------===//
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#include "TestDialect.h"
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#include "mlir/Dialect/StandardOps/IR/Ops.h"
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#include "mlir/IR/BlockAndValueMapping.h"
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#include "mlir/IR/BuiltinOps.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Transforms/InliningUtils.h"
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#include "mlir/Transforms/Passes.h"
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#include "llvm/ADT/StringSet.h"
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using namespace mlir;
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using namespace test;
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namespace {
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struct Inliner : public PassWrapper<Inliner, FunctionPass> {
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StringRef getArgument() const final { return "test-inline"; }
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StringRef getDescription() const final {
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return "Test inlining region calls";
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}
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void runOnFunction() override {
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auto function = getFunction();
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// Collect each of the direct function calls within the module.
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SmallVector<CallIndirectOp, 16> callers;
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function.walk([&](CallIndirectOp caller) { callers.push_back(caller); });
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// Build the inliner interface.
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InlinerInterface interface(&getContext());
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// Try to inline each of the call operations.
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for (auto caller : callers) {
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auto callee = dyn_cast_or_null<FunctionalRegionOp>(
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caller.getCallee().getDefiningOp());
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if (!callee)
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continue;
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// Inline the functional region operation, but only clone the internal
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// region if there is more than one use.
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if (failed(inlineRegion(
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interface, &callee.getBody(), caller, caller.getArgOperands(),
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caller.getResults(), caller.getLoc(),
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/*shouldCloneInlinedRegion=*/!callee.getResult().hasOneUse())))
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continue;
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// If the inlining was successful then erase the call and callee if
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// possible.
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caller.erase();
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if (callee.use_empty())
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callee.erase();
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}
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}
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};
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} // namespace
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namespace mlir {
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namespace test {
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void registerInliner() { PassRegistration<Inliner>(); }
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} // namespace test
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} // namespace mlir
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