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+.. _subsystems:
+
+Subsystem Documentation
+=======================
+
+.. toctree::
+   :hidden:
+
+   AliasAnalysis
+   BitCodeFormat
+   BranchWeightMetadata
+   Bugpoint
+   CodeGenerator
+   ExceptionHandling
+   LinkTimeOptimization
+   SegmentedStacks
+   TableGenFundamentals
+
+* `Writing an LLVM Pass <WritingAnLLVMPass.html>`_
+    
+   Information on how to write LLVM transformations and analyses.
+    
+* `Writing an LLVM Backend <WritingAnLLVMBackend.html>`_
+    
+   Information on how to write LLVM backends for machine targets.
+
+* :ref:`code_generator`
+
+   The design and implementation of the LLVM code generator.  Useful if you are
+   working on retargetting LLVM to a new architecture, designing a new codegen
+   pass, or enhancing existing components.
+    
+* :ref:`tablegen`
+
+   Describes the TableGen tool, which is used heavily by the LLVM code
+   generator.
+    
+* :ref:`alias_analysis`
+    
+   Information on how to write a new alias analysis implementation or how to
+   use existing analyses.
+    
+* `Accurate Garbage Collection with LLVM <GarbageCollection.html>`_
+    
+   The interfaces source-language compilers should use for compiling GC'd
+   programs.
+
+* `Source Level Debugging with LLVM <SourceLevelDebugging.html>`_
+    
+   This document describes the design and philosophy behind the LLVM
+   source-level debugger.
+    
+* :ref:`exception_handling`
+    
+   This document describes the design and implementation of exception handling
+   in LLVM.
+    
+* :ref:`bugpoint`
+    
+   Automatic bug finder and test-case reducer description and usage
+   information.
+    
+* :ref:`bitcode_format`
+    
+   This describes the file format and encoding used for LLVM "bc" files.
+    
+* `System Library <SystemLibrary.html>`_
+    
+   This document describes the LLVM System Library (<tt>lib/System</tt>) and
+   how to keep LLVM source code portable
+    
+* :ref:`lto`
+    
+   This document describes the interface between LLVM intermodular optimizer
+   and the linker and its design
+    
+* `The LLVM gold plugin <GoldPlugin.html>`_
+    
+   How to build your programs with link-time optimization on Linux.
+    
+* `The GDB JIT interface <DebuggingJITedCode.html>`_
+    
+   How to debug JITed code with GDB.
+    
+* :ref:`branch_weight`
+    
+   Provides information about Branch Prediction Information.
+
+* :ref:`segmented_stacks`
+
+   This document describes segmented stacks and how they are used in LLVM.