llvm/flang/docs/index.md

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.

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   ReleaseNotes

Using Flang

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   GettingStarted
   FlangCommandLineReference
   FortranStandardsSupport
   Extensions
   Directives
   OpenMPSupport
   Real16MathSupport
   Unsigned

Contributing to Flang

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   C++17
   C++style
   DesignGuideline
   FortranForCProgrammers
   GettingInvolved
   ImplementingASemanticCheck
   PullRequestChecklist

Design Documents

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   Aliasing
   AliasingAnalysisFIR
   ArrayComposition
   ArrayRepacking
   AssumedRank
   BijectiveInternalNameUniquing
   Calls
   Character
   ComplexOperations
   ControlFlowGraph
   DebugGeneration
   DoConcurrent
   DoConcurrentConversionToOpenMP
   F202X
   FIRArrayOperations
   FIRLangRef
   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
   ParallelMultiImageFortranRuntime
   ParameterizedDerivedTypes
   ParserCombinators
   Parsing
   PolymorphicEntities
   Preprocessing
   ProcedurePointer
   RuntimeDescriptor
   RuntimeEnvironment
   RuntimeTypeInfo
   Semantics
   f2018-grammar.md
   fstack-arrays

Indices and tables

* :ref:`genindex`
* :ref:`search`