| 1 | //===- TestInlining.cpp - Pass to inline calls in the test dialect --------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // TODO: This pass is only necessary because the main inlining pass |
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| 10 | // has not abstracted away the call+callee relationship. When the inlining |
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| 11 | // interface has this support, this pass should be removed. |
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| 12 | // |
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| 13 | //===----------------------------------------------------------------------===// |
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| 14 | |
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| 15 | #include "TestDialect.h" |
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| 16 | #include "TestOps.h" |
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| 17 | #include "mlir/Dialect/Func/IR/FuncOps.h" |
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| 18 | #include "mlir/IR/BuiltinOps.h" |
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| 19 | #include "mlir/IR/IRMapping.h" |
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| 20 | #include "mlir/Pass/Pass.h" |
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| 21 | #include "mlir/Transforms/InliningUtils.h" |
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| 22 | #include "llvm/ADT/StringSet.h" |
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| 23 | |
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| 24 | using namespace mlir; |
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| 25 | using namespace test; |
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| 26 | |
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| 27 | namespace { |
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| 28 | struct Inliner : public PassWrapper<Inliner, OperationPass<func::FuncOp>> { |
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| 29 | MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(Inliner) |
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| 30 | |
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| 31 | StringRef getArgument() const final { return "test-inline" ; } |
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| 32 | StringRef getDescription() const final { |
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| 33 | return "Test inlining region calls" ; |
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| 34 | } |
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| 35 | |
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| 36 | void runOnOperation() override { |
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| 37 | auto function = getOperation(); |
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| 38 | |
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| 39 | // Collect each of the direct function calls within the module. |
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| 40 | SmallVector<func::CallIndirectOp, 16> callers; |
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| 41 | function.walk( |
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| 42 | [&](func::CallIndirectOp caller) { callers.push_back(caller); }); |
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| 43 | |
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| 44 | // Build the inliner interface. |
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| 45 | InlinerInterface interface(&getContext()); |
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| 46 | |
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| 47 | // Try to inline each of the call operations. |
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| 48 | for (auto caller : callers) { |
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| 49 | auto callee = dyn_cast_or_null<FunctionalRegionOp>( |
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| 50 | caller.getCallee().getDefiningOp()); |
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| 51 | if (!callee) |
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| 52 | continue; |
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| 53 | |
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| 54 | // Inline the functional region operation, but only clone the internal |
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| 55 | // region if there is more than one use. |
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| 56 | if (failed(inlineRegion( |
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| 57 | interface, &callee.getBody(), caller, caller.getArgOperands(), |
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| 58 | caller.getResults(), caller.getLoc(), |
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| 59 | /*shouldCloneInlinedRegion=*/!callee.getResult().hasOneUse()))) |
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| 60 | continue; |
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| 61 | |
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| 62 | // If the inlining was successful then erase the call and callee if |
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| 63 | // possible. |
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| 64 | caller.erase(); |
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| 65 | if (callee.use_empty()) |
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| 66 | callee.erase(); |
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| 67 | } |
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| 68 | } |
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| 69 | }; |
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| 70 | } // namespace |
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| 71 | |
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| 72 | namespace mlir { |
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| 73 | namespace test { |
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| 74 | void registerInliner() { PassRegistration<Inliner>(); } |
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| 75 | } // namespace test |
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| 76 | } // namespace mlir |
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| 77 | |
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