[MLIR][LLVM] Add bytecode support for several attributes

mlir/include/mlir/Dialect/LLVMIR/CMakeLists.txt

@@ -48,6 +48,10 @@ mlir_tablegen(LLVMIntrinsicFromLLVMIRConversions.inc -gen-intr-from-llvmir-conve
 mlir_tablegen(LLVMConvertibleLLVMIRIntrinsics.inc -gen-convertible-llvmir-intrinsics)
 add_mlir_dialect_tablegen_target(MLIRLLVMIntrinsicConversionsIncGen)
 
+set(LLVM_TARGET_DEFINITIONS LLVMDialectBytecode.td)
+mlir_tablegen(LLVMDialectBytecode.cpp.inc -gen-bytecode -bytecode-dialect="LLVM")
+add_public_tablegen_target(MLIRLLVMDialectBytecodeIncGen)
+
 set(LLVM_TARGET_DEFINITIONS BasicPtxBuilderInterface.td)
 mlir_tablegen(BasicPtxBuilderInterface.h.inc -gen-op-interface-decls)
 mlir_tablegen(BasicPtxBuilderInterface.cpp.inc -gen-op-interface-defs)

mlir/include/mlir/Dialect/LLVMIR/LLVMDialectBytecode.td

@@ -0,0 +1,364 @@
+//===-- LLVMDialectBytecode.td - LLVM bytecode defs --------*- tablegen -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This is the LLVM bytecode reader/writer definition file.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DIALECT_BYTECODE
+#define LLVM_DIALECT_BYTECODE
+
+include "mlir/IR/BytecodeBase.td"
+
+//===----------------------------------------------------------------------===//
+// Bytecode classes for attributes and types.
+//===----------------------------------------------------------------------===//
+
+def String :
+  WithParser <"succeeded($_reader.readString($_var))",
+  WithBuilder<"$_args",
+  WithPrinter<"$_writer.writeOwnedString($_getter)",
+  WithType   <"StringRef">>>>;
+
+class Attr<string type> : WithType<type, Attribute>;
+
+class OptionalAttribute<string type> :
+  WithParser <"succeeded($_reader.readOptionalAttribute($_var))",
+  WithPrinter<"$_writer.writeOptionalAttribute($_getter)",
+  WithType<type, Attribute>>>;
+
+class OptionalInt<string type> :
+  WithParser <"succeeded(readOptionalInt($_reader, $_var))",
+  WithPrinter<"writeOptionalInt($_writer, $_getter)",
+  WithType<"std::optional<" # type # ">", VarInt>>>;
+
+class OptionalArrayRef<string eltType> :
+  WithParser <"succeeded(readOptionalArrayRef<"
+    # eltType # ">($_reader, $_var))",
+  WithPrinter<"writeOptionalArrayRef<"
+    # eltType # ">($_writer, $_getter)",
+  WithType<"SmallVector<"
+    # eltType # ">", Attribute>>>;
+
+class EnumClassFlag<string flag, string getter> :
+    WithParser<"succeeded($_reader.readVarInt($_var))",
+    WithBuilder<"(" # flag # ")$_args",
+    WithPrinter<"$_writer.writeVarInt((uint64_t)$_name." # getter # ")",
+    WithType<"uint64_t", VarInt>>>>;
+
+//===----------------------------------------------------------------------===//
+// General notes
+// - For each attribute or type entry, the argument names should match
+//   LLVMAttrDefs.td
+// - The mnemonics are either LLVM or builtin MLIR attributes and types, but
+//   regular C++ types are also allowed to match builders and parsers.
+// - DIScopeAttr and DINodeAttr are empty base classes, custom encoding not
+//   needed.
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// AliasScopeAttr
+//===----------------------------------------------------------------------===//
+
+def AliasScopeAttr : DialectAttribute<(attr
+  Attr<"Attribute">:$id,
+  Attr<"AliasScopeDomainAttr">:$domain,
+  OptionalAttribute<"StringAttr">:$description
+)>;
+
+//===----------------------------------------------------------------------===//
+// DIBasicTypeAttr
+//===----------------------------------------------------------------------===//
+
+def DIBasicTypeAttr : DialectAttribute<(attr
+  VarInt:$tag,
+  String:$name,
+  VarInt:$sizeInBits,
+  VarInt:$encoding
+)>;
+
+//===----------------------------------------------------------------------===//
+// DIExpressionAttr, DIExpressionElemAttr
+//===----------------------------------------------------------------------===//
+
+def DIExpressionElemAttr : DialectAttribute<(attr
+  VarInt:$opcode,
+  OptionalArrayRef<"uint64_t">:$arguments
+)>;
+
+def DIExpressionAttr : DialectAttribute<(attr
+  OptionalArrayRef<"DIExpressionElemAttr">:$operations
+)>;
+
+//===----------------------------------------------------------------------===//
+// DIFileAttr
+//===----------------------------------------------------------------------===//
+
+def DIFileAttr : DialectAttribute<(attr
+  String:$name,
+  String:$directory
+)>;
+
+//===----------------------------------------------------------------------===//
+// DILocalVariableAttr
+//===----------------------------------------------------------------------===//
+
+def DILocalVariableAttr : DialectAttribute<(attr
+  Attr<"DIScopeAttr">:$scope,
+  OptionalAttribute<"StringAttr">:$name,
+  OptionalAttribute<"DIFileAttr">:$file,
+  VarInt:$line,
+  VarInt:$arg,
+  VarInt:$alignInBits,
+  OptionalAttribute<"DITypeAttr">:$type,
+  EnumClassFlag<"DIFlags", "getFlags()">:$_rawflags,
+  LocalVar<"DIFlags", "(DIFlags)_rawflags">:$flags
+)> {
+  // DILocalVariableAttr direct getter uses a `StringRef` for `name`. Since the
+  // more direct getter is prefered during bytecode reading, force the base one
+  // and prevent crashes for empty `StringAttr`.
+  let cBuilder = "$_resultType::get(context, $_args)";
+}
+
+//===----------------------------------------------------------------------===//
+// DISubroutineTypeAttr
+//===----------------------------------------------------------------------===//
+
+def DISubroutineTypeAttr : DialectAttribute<(attr
+  VarInt:$callingConvention,
+  OptionalArrayRef<"DITypeAttr">:$types
+)>;
+
+//===----------------------------------------------------------------------===//
+// DICompileUnitAttr
+//===----------------------------------------------------------------------===//
+
+def DICompileUnitAttr : DialectAttribute<(attr
+  Attr<"DistinctAttr">:$id,
+  VarInt:$sourceLanguage,
+  Attr<"DIFileAttr">:$file,
+  OptionalAttribute<"StringAttr">:$producer,
+  Bool:$isOptimized,
+  EnumClassFlag<"DIEmissionKind", "getEmissionKind()">:$_rawEmissionKind,
+  LocalVar<"DIEmissionKind", "(DIEmissionKind)_rawEmissionKind">:$emissionKind,
+  EnumClassFlag<"DINameTableKind", "getNameTableKind()">:$_rawNameTableKind,
+  LocalVar<"DINameTableKind",
+           "(DINameTableKind)_rawNameTableKind">:$nameTableKind
+)>;
+
+//===----------------------------------------------------------------------===//
+// DISubprogramAttr
+//===----------------------------------------------------------------------===//
+
+def DISubprogramAttr : DialectAttribute<(attr
+  OptionalAttribute<"DistinctAttr">:$recId,
+  Bool:$isRecSelf,
+  OptionalAttribute<"DistinctAttr">:$id,
+  OptionalAttribute<"DICompileUnitAttr">:$compileUnit,
+  OptionalAttribute<"DIScopeAttr">:$scope,
+  OptionalAttribute<"StringAttr">:$name,
+  OptionalAttribute<"StringAttr">:$linkageName,
+  OptionalAttribute<"DIFileAttr">:$file,
+  VarInt:$line,
+  VarInt:$scopeLine,
+  EnumClassFlag<"DISubprogramFlags", "getSubprogramFlags()">:$_rawflags,
+  LocalVar<"DISubprogramFlags", "(DISubprogramFlags)_rawflags">:$subprogramFlags,
+  OptionalAttribute<"DISubroutineTypeAttr">:$type,
+  OptionalArrayRef<"DINodeAttr">:$retainedNodes,
+  OptionalArrayRef<"DINodeAttr">:$annotations
+)>;
+
+//===----------------------------------------------------------------------===//
+// DICompositeTypeAttr
+//===----------------------------------------------------------------------===//
+
+def DICompositeTypeAttr : DialectAttribute<(attr
+  OptionalAttribute<"DistinctAttr">:$recId,
+  Bool:$isRecSelf,
+  VarInt:$tag,
+  OptionalAttribute<"StringAttr">:$name,
+  OptionalAttribute<"DIFileAttr">:$file,
+  VarInt:$line,
+  OptionalAttribute<"DIScopeAttr">:$scope,
+  OptionalAttribute<"DITypeAttr">:$baseType,
+  EnumClassFlag<"DIFlags", "getFlags()">:$_rawflags,
+  LocalVar<"DIFlags", "(DIFlags)_rawflags">:$flags,
+  VarInt:$sizeInBits,
+  VarInt:$alignInBits,
+  OptionalAttribute<"DIExpressionAttr">:$dataLocation,
+  OptionalAttribute<"DIExpressionAttr">:$rank,
+  OptionalAttribute<"DIExpressionAttr">:$allocated,
+  OptionalAttribute<"DIExpressionAttr">:$associated,
+  OptionalArrayRef<"DINodeAttr">:$elements
+)>;
+
+//===----------------------------------------------------------------------===//
+// DIDerivedTypeAttr
+//===----------------------------------------------------------------------===//
+
+def DIDerivedTypeAttr : DialectAttribute<(attr
+  VarInt:$tag,
+  OptionalAttribute<"StringAttr">:$name,
+  OptionalAttribute<"DITypeAttr">:$baseType,
+  VarInt:$sizeInBits,
+  VarInt:$alignInBits,
+  VarInt:$offsetInBits,
+  OptionalInt<"unsigned">:$dwarfAddressSpace,
+  OptionalAttribute<"DINodeAttr">:$extraData
+)>;
+
+//===----------------------------------------------------------------------===//
+// DIImportedEntityAttr
+//===----------------------------------------------------------------------===//
+
+def DIImportedEntityAttr : DialectAttribute<(attr
+  VarInt:$tag,
+  Attr<"DIScopeAttr">:$scope,
+  Attr<"DINodeAttr">:$entity,
+  OptionalAttribute<"DIFileAttr">:$file,
+  VarInt:$line,
+  OptionalAttribute<"StringAttr">:$name,
+  OptionalArrayRef<"DINodeAttr">:$elements
+)>;
+
+//===----------------------------------------------------------------------===//
+// DIGlobalVariableAttr, DIGlobalVariableExpressionAttr
+//===----------------------------------------------------------------------===//
+
+def DIGlobalVariableAttr : DialectAttribute<(attr
+  OptionalAttribute<"DIScopeAttr">:$scope,
+  OptionalAttribute<"StringAttr">:$name,
+  OptionalAttribute<"StringAttr">:$linkageName,
+  Attr<"DIFileAttr">:$file,
+  VarInt:$line,
+  Attr<"DITypeAttr">:$type,
+  Bool:$isLocalToUnit,
+  Bool:$isDefined,
+  VarInt:$alignInBits
+)>;
+
+def DIGlobalVariableExpressionAttr : DialectAttribute<(attr
+  Attr<"DIGlobalVariableAttr">:$var,
+  OptionalAttribute<"DIExpressionAttr">:$expr
+)>;
+
+//===----------------------------------------------------------------------===//
+// DILabelAttr
+//===----------------------------------------------------------------------===//
+
+def DILabelAttr : DialectAttribute<(attr
+  Attr<"DIScopeAttr">:$scope,
+  OptionalAttribute<"StringAttr">:$name,
+  OptionalAttribute<"DIFileAttr">:$file,
+  VarInt:$line
+)> {
+  // DILabelAttr direct getter uses a `StringRef` for `name`. Since the
+  // more direct getter is prefered during bytecode reading, force the base one
+  // and prevent crashes for empty `StringAttr`.
+  let cBuilder = "$_resultType::get(context, $_args)";
+}
+
+//===----------------------------------------------------------------------===//
+// DILexicalBlockAttr, DILexicalBlockFileAttr
+//===----------------------------------------------------------------------===//
+
+def DILexicalBlockAttr : DialectAttribute<(attr
+  Attr<"DIScopeAttr">:$scope,
+  OptionalAttribute<"DIFileAttr">:$file,
+  VarInt:$line,
+  VarInt:$column
+)>;
+
+def DILexicalBlockFileAttr : DialectAttribute<(attr
+  Attr<"DIScopeAttr">:$scope,
+  OptionalAttribute<"DIFileAttr">:$file,
+  VarInt:$discriminator
+)>;
+
+//===----------------------------------------------------------------------===//
+// DINamespaceAttr
+//===----------------------------------------------------------------------===//
+
+def DINamespaceAttr : DialectAttribute<(attr
+  OptionalAttribute<"StringAttr">:$name,
+  OptionalAttribute<"DIScopeAttr">:$scope,
+  Bool:$exportSymbols
+)>;
+
+//===----------------------------------------------------------------------===//
+// DISubrangeAttr
+//===----------------------------------------------------------------------===//
+
+def DISubrangeAttr : DialectAttribute<(attr
+  OptionalAttribute<"Attribute">:$count,
+  OptionalAttribute<"Attribute">:$lowerBound,
+  OptionalAttribute<"Attribute">:$upperBound,
+  OptionalAttribute<"Attribute">:$stride
+)>;
+
+//===----------------------------------------------------------------------===//
+// LoopAnnotationAttr
+//===----------------------------------------------------------------------===//
+
+def LoopAnnotationAttr : DialectAttribute<(attr
+  OptionalAttribute<"BoolAttr">:$disableNonforced,
+  OptionalAttribute<"LoopVectorizeAttr">:$vectorize,
+  OptionalAttribute<"LoopInterleaveAttr">:$interleave,
+  OptionalAttribute<"LoopUnrollAttr">:$unroll,
+  OptionalAttribute<"LoopUnrollAndJamAttr">:$unrollAndJam,
+  OptionalAttribute<"LoopLICMAttr">:$licm,
+  OptionalAttribute<"LoopDistributeAttr">:$distribute,
+  OptionalAttribute<"LoopPipelineAttr">:$pipeline,
+  OptionalAttribute<"LoopPeeledAttr">:$peeled,
+  OptionalAttribute<"LoopUnswitchAttr">:$unswitch,
+  OptionalAttribute<"BoolAttr">:$mustProgress,
+  OptionalAttribute<"BoolAttr">:$isVectorized,
+  OptionalAttribute<"FusedLoc">:$startLoc,
+  OptionalAttribute<"FusedLoc">:$endLoc,
+  OptionalArrayRef<"AccessGroupAttr">:$parallelAccesses
+)>;
+
+//===----------------------------------------------------------------------===//
+// Attributes & Types with custom bytecode handling.
+//===----------------------------------------------------------------------===//
+
+// All the attributes with custom bytecode handling.
+def LLVMDialectAttributes : DialectAttributes<"LLVM"> {
+  let elems = [
+    AliasScopeAttr,
+    DIBasicTypeAttr,
+    DICompileUnitAttr,
+    DICompositeTypeAttr,
+    DIDerivedTypeAttr,
+    DIExpressionElemAttr,
+    DIExpressionAttr,
+    DIFileAttr,
+    DIGlobalVariableAttr,
+    DIGlobalVariableExpressionAttr,
+    DIImportedEntityAttr,
+    DILabelAttr,
+    DILexicalBlockAttr,
+    DILexicalBlockFileAttr,
+    DILocalVariableAttr,
+    DINamespaceAttr,
+    DISubprogramAttr,
+    DISubrangeAttr,
+    DISubroutineTypeAttr,
+    LoopAnnotationAttr
+    // Referenced attributes currently missing support:
+    // AccessGroupAttr, LoopVectorizeAttr, LoopInterleaveAttr, LoopUnrollAttr,
+    // LoopUnrollAndJamAttr, LoopLICMAttr, LoopDistributeAttr, LoopPipelineAttr,
+    // LoopPeeledAttr, LoopUnswitchAttr
+  ];
+}
+
+def LLVMDialectTypes : DialectTypes<"LLVM"> {
+  let elems = [];
+}
+
+#endif // LLVM_DIALECT_BYTECODE

mlir/lib/Dialect/LLVMIR/CMakeLists.txt

@@ -8,11 +8,13 @@ add_mlir_dialect_library(MLIRLLVMDialect
   IR/LLVMMemorySlot.cpp
   IR/LLVMTypes.cpp
   IR/LLVMTypeSyntax.cpp
+  IR/LLVMDialectBytecode.cpp
 
   ADDITIONAL_HEADER_DIRS
   ${MLIR_MAIN_INCLUDE_DIR}/mlir/Dialect/LLVMIR
 
   DEPENDS
+  MLIRLLVMDialectBytecodeIncGen
   MLIRLLVMOpsIncGen
   MLIRLLVMTypesIncGen
   MLIRLLVMIntrinsicOpsIncGen