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a2029fa58e
In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
127 lines
5.0 KiB
C++
127 lines
5.0 KiB
C++
//===- llvm/IR/Metadata.def - Metadata definitions --------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Macros for running through all types of metadata.
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//
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//===----------------------------------------------------------------------===//
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#if !(defined HANDLE_METADATA || defined HANDLE_METADATA_LEAF || \
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defined HANDLE_METADATA_BRANCH || defined HANDLE_MDNODE_LEAF || \
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defined HANDLE_MDNODE_LEAF_UNIQUABLE || defined HANDLE_MDNODE_BRANCH || \
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defined HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE || \
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defined HANDLE_SPECIALIZED_MDNODE_LEAF || \
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defined HANDLE_SPECIALIZED_MDNODE_BRANCH)
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#error "Missing macro definition of HANDLE_METADATA*"
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#endif
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// Handler for all types of metadata.
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#ifndef HANDLE_METADATA
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#define HANDLE_METADATA(CLASS)
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#endif
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// Handler for leaf nodes in the class hierarchy.
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#ifndef HANDLE_METADATA_LEAF
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#define HANDLE_METADATA_LEAF(CLASS) HANDLE_METADATA(CLASS)
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#endif
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// Handler for non-leaf nodes in the class hierarchy.
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#ifndef HANDLE_METADATA_BRANCH
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#define HANDLE_METADATA_BRANCH(CLASS) HANDLE_METADATA(CLASS)
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#endif
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// Handler for specialized and uniquable leaf nodes under MDNode. Defers to
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// HANDLE_MDNODE_LEAF_UNIQUABLE if it's defined, otherwise to
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// HANDLE_SPECIALIZED_MDNODE_LEAF.
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#ifndef HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE
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#ifdef HANDLE_MDNODE_LEAF_UNIQUABLE
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#define HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(CLASS) \
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HANDLE_MDNODE_LEAF_UNIQUABLE(CLASS)
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#else
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#define HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(CLASS) \
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HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS)
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#endif
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#endif
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// Handler for leaf nodes under MDNode.
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#ifndef HANDLE_MDNODE_LEAF_UNIQUABLE
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#define HANDLE_MDNODE_LEAF_UNIQUABLE(CLASS) HANDLE_MDNODE_LEAF(CLASS)
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#endif
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// Handler for leaf nodes under MDNode.
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#ifndef HANDLE_MDNODE_LEAF
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#define HANDLE_MDNODE_LEAF(CLASS) HANDLE_METADATA_LEAF(CLASS)
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#endif
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// Handler for non-leaf nodes under MDNode.
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#ifndef HANDLE_MDNODE_BRANCH
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#define HANDLE_MDNODE_BRANCH(CLASS) HANDLE_METADATA_BRANCH(CLASS)
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#endif
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// Handler for specialized leaf nodes under MDNode.
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#ifndef HANDLE_SPECIALIZED_MDNODE_LEAF
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#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) HANDLE_MDNODE_LEAF(CLASS)
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#endif
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// Handler for specialized non-leaf nodes under MDNode.
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#ifndef HANDLE_SPECIALIZED_MDNODE_BRANCH
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#define HANDLE_SPECIALIZED_MDNODE_BRANCH(CLASS) HANDLE_MDNODE_BRANCH(CLASS)
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#endif
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HANDLE_METADATA_LEAF(MDString)
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HANDLE_METADATA_BRANCH(ValueAsMetadata)
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HANDLE_METADATA_LEAF(ConstantAsMetadata)
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HANDLE_METADATA_LEAF(LocalAsMetadata)
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HANDLE_METADATA_LEAF(DistinctMDOperandPlaceholder)
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HANDLE_MDNODE_BRANCH(MDNode)
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HANDLE_MDNODE_LEAF_UNIQUABLE(MDTuple)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DILocation)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIExpression)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIGlobalVariableExpression)
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HANDLE_SPECIALIZED_MDNODE_BRANCH(DINode)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(GenericDINode)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DISubrange)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIEnumerator)
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HANDLE_SPECIALIZED_MDNODE_BRANCH(DIScope)
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HANDLE_SPECIALIZED_MDNODE_BRANCH(DIType)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIBasicType)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIDerivedType)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DICompositeType)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DISubroutineType)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIFile)
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HANDLE_SPECIALIZED_MDNODE_LEAF(DICompileUnit)
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HANDLE_SPECIALIZED_MDNODE_BRANCH(DILocalScope)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DISubprogram)
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HANDLE_SPECIALIZED_MDNODE_BRANCH(DILexicalBlockBase)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DILexicalBlock)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DILexicalBlockFile)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DINamespace)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIModule)
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HANDLE_SPECIALIZED_MDNODE_BRANCH(DITemplateParameter)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DITemplateTypeParameter)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DITemplateValueParameter)
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HANDLE_SPECIALIZED_MDNODE_BRANCH(DIVariable)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIGlobalVariable)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DILocalVariable)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DILabel)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIObjCProperty)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIImportedEntity)
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HANDLE_SPECIALIZED_MDNODE_BRANCH(DIMacroNode)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIMacro)
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HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DIMacroFile)
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#undef HANDLE_METADATA
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#undef HANDLE_METADATA_LEAF
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#undef HANDLE_METADATA_BRANCH
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#undef HANDLE_MDNODE_LEAF
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#undef HANDLE_MDNODE_LEAF_UNIQUABLE
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#undef HANDLE_MDNODE_BRANCH
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#undef HANDLE_SPECIALIZED_MDNODE_LEAF
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#undef HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE
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#undef HANDLE_SPECIALIZED_MDNODE_BRANCH
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