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This document discusses some options where the debug metadata can be generated. It also goes through various language constructs and explains how the debug metadata will look like for that construct and how we can extract that information. The real point of discussion is how and where to extract the information about various language features to generate the debug metadata. The structure of the metadata itself is mostly settled as that is dictated by the DWARF and structure of LLVM IR metadata. The classic flang and gfortran generate quite similar DWARF for the various language constructs. This document is based on what Kiran posted in https://reviews.llvm.org/D138534. --------- Co-authored-by: Tom Eccles <t@freedommail.info> Co-authored-by: Kiran Chandramohan <kiranchandramohan@gmail.com>
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Welcome to Flang's documentation
Flang is LLVM's Fortran frontend that can be found here. It is often referred to as "LLVM Flang" to differentiate itself from "Classic Flang" - these are two separate and independent Fortran compilers. LLVM Flang is under active development. While it is capable of generating executables for a number of examples, some functionality is still missing. See Getting Involved for tips on how to get in touch with us and to learn more about the current status.
.. toctree::
:titlesonly:
ReleaseNotes
Contributing to Flang
.. toctree::
:titlesonly:
C++17
C++style
DesignGuideline
FortranForCProgrammers
GettingInvolved
GettingStarted
ImplementingASemanticCheck
PullRequestChecklist
Design Documents
.. toctree::
:titlesonly:
Aliasing
AliasingAnalysisFIR
ArrayComposition
AssumedRank
BijectiveInternalNameUniquing
Calls
Character
ComplexOperations
ControlFlowGraph
DebugGeneration
Directives
DoConcurrent
Extensions
F202X
FIRArrayOperations
FIRLangRef
FlangCommandLineReference
FlangDriver
FortranFeatureHistory
FortranIR
FortranLLVMTestSuite
HighLevelFIR
IORuntimeInternals
InternalProcedureTrampolines
Intrinsics
IntrinsicTypes
LabelResolution
ModFiles
OpenACC
OpenACC-descriptor-management.md
OpenMP-4.5-grammar.md
OpenMP-declare-target
OpenMP-descriptor-management
OpenMP-semantics
OptionComparison
Overview
ParameterizedDerivedTypes
ParserCombinators
Parsing
PolymorphicEntities
Preprocessing
ProcedurePointer
RuntimeDescriptor
RuntimeEnvironment
RuntimeTypeInfo
Semantics
f2018-grammar.md
fstack-arrays
Real16MathSupport
Indices and tables
* :ref:`genindex`
* :ref:`search`