[Mlir-commits] [flang] [mlir] [MLIR][LLVM] Turn the inliner interface into a promised interface (PR #103927)

Christian Ulmann llvmlistbot at llvm.org
Wed Aug 14 06:15:13 PDT 2024 

https://github.com/Dinistro created https://github.com/llvm/llvm-project/pull/103927

This commit changes the LLVM dialect's inliner interface to no longer be registered at dialect initialization. Instead, it is now a promised interface, that needs to be registered explicitly. This change is desired to avoid pulling in a lot of dependencies into the `MLIRLLVMDialect` library, especially considering future patches that plan to extend it further with strong IR analysis.

>From 64973598a225aba29c8b6efd4926e8c76a9787a4 Mon Sep 17 00:00:00 2001
From: Christian Ulmann <christian.ulmann at nextsilicon.com>
Date: Wed, 14 Aug 2024 13:10:00 +0000
Subject: [PATCH] [MLIR][LLVM] Turn the inliner interface into a promised
 interface

This commit changes the LLVM dialect's inliner interface to no longer be
registered at dialect initialization. Instead, it is now a promised
interface, that needs to be registered explicitly.
This change is desired to avoid pulling in a lot of dependencies into
the `MLIRLLVMDialect` library, especially considering future patches
that plan to extend it further with strong IR analysis.
---
 .../include/flang/Optimizer/Support/InitFIR.h |  1 +
 .../LLVMIR/Transforms/InlinerInterfaceImpl.h} | 21 +++++++------------
 mlir/include/mlir/InitAllDialects.h           |  2 ++
 mlir/lib/Dialect/LLVMIR/CMakeLists.txt        |  1 -
 mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp    |  4 ++--
 .../Dialect/LLVMIR/Transforms/CMakeLists.txt  |  1 +
 .../InlinerInterfaceImpl.cpp}                 | 10 +++++----
 7 files changed, 20 insertions(+), 20 deletions(-)
 rename mlir/{lib/Dialect/LLVMIR/IR/LLVMInlining.h => include/mlir/Dialect/LLVMIR/Transforms/InlinerInterfaceImpl.h} (64%)
 rename mlir/lib/Dialect/LLVMIR/{IR/LLVMInlining.cpp => Transforms/InlinerInterfaceImpl.cpp} (99%)

diff --git a/flang/include/flang/Optimizer/Support/InitFIR.h b/flang/include/flang/Optimizer/Support/InitFIR.h
index 48cc1cbc645684..0192d7fdbea099 100644
--- a/flang/include/flang/Optimizer/Support/InitFIR.h
+++ b/flang/include/flang/Optimizer/Support/InitFIR.h
@@ -46,6 +46,7 @@ namespace fir::support {
 inline void registerNonCodegenDialects(mlir::DialectRegistry &registry) {
   registry.insert<FLANG_NONCODEGEN_DIALECT_LIST>();
   mlir::func::registerInlinerExtension(registry);
+  mlir::LLVM::registerLLVMInlinerInterface(registry);
 }
 
 /// Register all the dialects used by flang.
diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMInlining.h b/mlir/include/mlir/Dialect/LLVMIR/Transforms/InlinerInterfaceImpl.h
similarity index 64%
rename from mlir/lib/Dialect/LLVMIR/IR/LLVMInlining.h
rename to mlir/include/mlir/Dialect/LLVMIR/Transforms/InlinerInterfaceImpl.h
index c6f75d5657c3be..9c94cf6512195f 100644
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMInlining.h
+++ b/mlir/include/mlir/Dialect/LLVMIR/Transforms/InlinerInterfaceImpl.h
@@ -1,4 +1,4 @@
-//===- LLVMInlining.h - Registration of LLVMInlinerInterface ----*- C++ -*-===//
+//===- InlinerInterfaceImpl.h - Inlining for LLVM the dialect ---*- C++ -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -6,28 +6,23 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// Allows registering the LLVM DialectInlinerInterface with the LLVM dialect
-// during initialization.
+// Allows registering the LLVM DialectInlinerInterface with the LLVM dialect.
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef DIALECT_LLVMIR_IR_LLVMINLINING_H
-#define DIALECT_LLVMIR_IR_LLVMINLINING_H
+#ifndef MLIR_DIALECT_LLVMIR_TRANSFORMS_INLINERINTERFACEIMPL_H
+#define MLIR_DIALECT_LLVMIR_TRANSFORMS_INLINERINTERFACEIMPL_H
 
 namespace mlir {
-namespace LLVM {
-
-class LLVMDialect;
+class DialectRegistry;
 
-namespace detail {
+namespace LLVM {
 
 /// Register the `LLVMInlinerInterface` implementation of
 /// `DialectInlinerInterface` with the LLVM dialect.
-void addLLVMInlinerInterface(LLVMDialect *dialect);
-
-} // namespace detail
+void registerLLVMInlinerInterface(DialectRegistry &registry);
 
 } // namespace LLVM
 } // namespace mlir
 
-#endif // DIALECT_LLVMIR_IR_LLVMINLINING_H
+#endif // MLIR_DIALECT_LLVMIR_TRANSFORMS_INLINERINTERFACEIMPL_H
diff --git a/mlir/include/mlir/InitAllDialects.h b/mlir/include/mlir/InitAllDialects.h
index 549c26c72d8a1e..cdece616e4cf7c 100644
--- a/mlir/include/mlir/InitAllDialects.h
+++ b/mlir/include/mlir/InitAllDialects.h
@@ -43,6 +43,7 @@
 #include "mlir/Dialect/LLVMIR/LLVMDialect.h"
 #include "mlir/Dialect/LLVMIR/NVVMDialect.h"
 #include "mlir/Dialect/LLVMIR/ROCDLDialect.h"
+#include "mlir/Dialect/LLVMIR/Transforms/InlinerInterfaceImpl.h"
 #include "mlir/Dialect/Linalg/IR/Linalg.h"
 #include "mlir/Dialect/Linalg/Transforms/AllInterfaces.h"
 #include "mlir/Dialect/Linalg/Transforms/RuntimeOpVerification.h"
@@ -163,6 +164,7 @@ inline void registerAllDialects(DialectRegistry &registry) {
   cf::registerBufferizableOpInterfaceExternalModels(registry);
   cf::registerBufferDeallocationOpInterfaceExternalModels(registry);
   gpu::registerBufferDeallocationOpInterfaceExternalModels(registry);
+  LLVM::registerLLVMInlinerInterface(registry);
   linalg::registerAllDialectInterfaceImplementations(registry);
   linalg::registerRuntimeVerifiableOpInterfaceExternalModels(registry);
   memref::registerAllocationOpInterfaceExternalModels(registry);
diff --git a/mlir/lib/Dialect/LLVMIR/CMakeLists.txt b/mlir/lib/Dialect/LLVMIR/CMakeLists.txt
index 392065b859ee54..fce24b556036f3 100644
--- a/mlir/lib/Dialect/LLVMIR/CMakeLists.txt
+++ b/mlir/lib/Dialect/LLVMIR/CMakeLists.txt
@@ -4,7 +4,6 @@ add_mlir_dialect_library(MLIRLLVMDialect
   IR/FunctionCallUtils.cpp
   IR/LLVMAttrs.cpp
   IR/LLVMDialect.cpp
-  IR/LLVMInlining.cpp
   IR/LLVMInterfaces.cpp
   IR/LLVMMemorySlot.cpp
   IR/LLVMTypes.cpp
diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
index 90610118a45cd2..476281d44e4306 100644
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
@@ -12,7 +12,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "mlir/Dialect/LLVMIR/LLVMDialect.h"
-#include "LLVMInlining.h"
 #include "TypeDetail.h"
 #include "mlir/Dialect/LLVMIR/LLVMAttrs.h"
 #include "mlir/Dialect/LLVMIR/LLVMInterfaces.h"
@@ -24,6 +23,7 @@
 #include "mlir/IR/MLIRContext.h"
 #include "mlir/IR/Matchers.h"
 #include "mlir/Interfaces/FunctionImplementation.h"
+#include "mlir/Transforms/InliningUtils.h"
 
 #include "llvm/ADT/SCCIterator.h"
 #include "llvm/ADT/TypeSwitch.h"
@@ -3200,7 +3200,7 @@ void LLVMDialect::initialize() {
   // clang-format off
   addInterfaces<LLVMOpAsmDialectInterface>();
   // clang-format on
-  detail::addLLVMInlinerInterface(this);
+  declarePromisedInterface<DialectInlinerInterface, LLVMDialect>();
 }
 
 #define GET_OP_CLASSES
diff --git a/mlir/lib/Dialect/LLVMIR/Transforms/CMakeLists.txt b/mlir/lib/Dialect/LLVMIR/Transforms/CMakeLists.txt
index 728885fcbeaf38..d4ff0955c5d0e2 100644
--- a/mlir/lib/Dialect/LLVMIR/Transforms/CMakeLists.txt
+++ b/mlir/lib/Dialect/LLVMIR/Transforms/CMakeLists.txt
@@ -3,6 +3,7 @@ add_mlir_dialect_library(MLIRLLVMIRTransforms
   DIExpressionLegalization.cpp
   DIExpressionRewriter.cpp
   DIScopeForLLVMFuncOp.cpp
+  InlinerInterfaceImpl.cpp
   LegalizeForExport.cpp
   OptimizeForNVVM.cpp
   RequestCWrappers.cpp
diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMInlining.cpp b/mlir/lib/Dialect/LLVMIR/Transforms/InlinerInterfaceImpl.cpp
similarity index 99%
rename from mlir/lib/Dialect/LLVMIR/IR/LLVMInlining.cpp
rename to mlir/lib/Dialect/LLVMIR/Transforms/InlinerInterfaceImpl.cpp
index 137c1962b100af..55bf99f4228ae4 100644
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMInlining.cpp
+++ b/mlir/lib/Dialect/LLVMIR/Transforms/InlinerInterfaceImpl.cpp
@@ -1,4 +1,4 @@
-//===- LLVMInlining.cpp - LLVM inlining interface and logic -----*- C++ -*-===//
+//===- InlinerInterfaceImpl.cpp - Inlining for LLVM the dialect -----------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -11,7 +11,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "LLVMInlining.h"
+#include "mlir/Dialect/LLVMIR/Transforms/InlinerInterfaceImpl.h"
 #include "mlir/Dialect/LLVMIR/LLVMDialect.h"
 #include "mlir/IR/Matchers.h"
 #include "mlir/Interfaces/DataLayoutInterfaces.h"
@@ -850,6 +850,8 @@ struct LLVMInlinerInterface : public DialectInlinerInterface {
 
 } // end anonymous namespace
 
-void LLVM::detail::addLLVMInlinerInterface(LLVM::LLVMDialect *dialect) {
-  dialect->addInterfaces<LLVMInlinerInterface>();
+void mlir::LLVM::registerLLVMInlinerInterface(DialectRegistry &registry) {
+  registry.addExtension(+[](MLIRContext *ctx, LLVM::LLVMDialect *dialect) {
+    dialect->addInterfaces<LLVMInlinerInterface>();
+  });
 }

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