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<title>Object Files: Understanding The Result Of LLVM Compilation</title>
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<body>
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2004-09-05 02:56:39 +00:00
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<div class="doc_title">
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Object Files: Understanding The Result Of LLVM Compilation
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</div>
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2004-02-27 06:28:34 +00:00
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<ol>
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<li><a href="#abstract">Abstract</a></li>
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<li><a href="#introduction">Introduction</a></li>
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<li><a href="#files">File Contents</a></li>
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<li><a href="#rot">Linkage Rules Of Thumb</a>
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<ol>
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<li><a href="#always">Always Link vmcore.o, support.a</a>
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<li><a href="#placeholder">Placeholder</a>
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</ol>
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</li>
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</ol>
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2004-05-23 21:07:27 +00:00
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<div class="doc_author">
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<p>Written by <a href="mailto:rspencer@x10sys.com">Reid Spencer</a></p>
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2004-02-27 06:28:34 +00:00
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</div>
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2004-05-23 21:07:27 +00:00
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2004-02-27 06:28:34 +00:00
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<!-- ======================================================================= -->
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<div class="doc_section"><a name="abstract">Abstract</a></div>
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<div class="doc_text">
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<p>This document describes the contents of the many objects files and libraries
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that are produced by compiling LLVM. To make use of LLVM this information is
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needed in order to understand what files should be linked into your program.
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</p>
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</div>
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<!-- ======================================================================= -->
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<div class="doc_section"> <a name="introduction">Introduction</a></div>
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<div class="doc_text">
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<p>If you're writing a compiler, virtual machine, or any other utility for
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LLVM, you'll need to figure out which of the many .a (archive) and .o
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(object) files you will need to link with to be successful. An
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understanding of the contents of these files and their inter-relationships
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will be useful in coming up with an optimal specification for the objects
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and libraries to link with.
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</p>
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<p>The purpose of this document is to hopefully reduce some of the trial and
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error that the author experienced in using LLVM.
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</p>
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</div>
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<!-- ======================================================================= -->
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<div class="doc_section"><a name="files"></a>File Contents</div>
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<div class="doc_text">
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<p>The table below provides a summary of the basic contents of each file.</p>
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<table class="doc_table"
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style="width:80%; text-align: left; border: 2px solid gray; border-collapse: collapse;">
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<tr class="doc_table">
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<td colspan="2" class="doc_section">Summary Of LLVM Library And Object Files
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</td>
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</tr>
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<tr class="doc_table">
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<td><h2><u>Library</u></h2></td>
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<td><h2><u>Description</u></h2></td>
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</tr>
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<tr class="doc_table">
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<td>libipo.a</td>
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<td>
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An archive of all inter-procedural optimizations.
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</td>
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</tr>
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<tr class="doc_table">
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<td>libscalaropts.a</td>
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<td>
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An archive of all scalar optimizations.
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</td>
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</tr>
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<tr class="doc_table">
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<td>libtransforms.a</td>
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<td>
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An archive of just the level raise pass.
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</td>
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</tr>
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<tr class="doc_table">
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<td>libtarget.a</td>
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<td>
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An archive containing code generator support for describing
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target architectures.
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</td>
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</tr>
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<tr class="doc_table">
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<td>libanalysis.a</td>
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<td>
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An archive containing intra-procedural analyses.
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</td>
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</tr>
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<tr class="doc_table">
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<td>libdatastructure.a</td>
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<td>
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An archive containing optimizations for data structures.
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</td>
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</tr>
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<tr class="doc_table">
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<td>libinstrument.a</td>
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<td>No idea.</td>
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</tr>
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<tr class="doc_table">
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<td>libregalloc.a</td>
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<td>Register Allocation code.</td>
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</tr>
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<tr class="doc_table">
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<td>libipa.a</td>
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<td>
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An archive containing inter-procedural analyses</td>
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</tr>
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<tr class="doc_table">
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<td>libtransformutils.a</td>
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<td>
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Utiltities for transformations?
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</td>
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</tr>
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<tr class="doc_table">
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<td>libsupport.a</td>
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<td>General support utilities</td>
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</tr>
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<tr class="doc_table">
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<td>libevar.a</td>
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<td>Live variable analysis for SPARC</td>
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</tr>
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<tr class="doc_table">
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<td><h2><u>Object File</u></h2></td>
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<td><h2><u>Description</u></h2></td>
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</tr>
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<tr class="doc_table">
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<td>support.o</td>
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<td>General support utilities</td>
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</tr>
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<tr class="doc_table">
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<td>asmparser.o</td>
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<td>Assembler Parser</td>
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</tr>
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<tr class="doc_table">
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<td>bcreader.o</td>
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<td>Byte Code Reader</td>
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</tr>
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<tr class="doc_table">
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<td>bcwriter.o</td>
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<td>Byte Code Writer</td>
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</tr>
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<tr class="doc_table">
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<td>sched.o</td>
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<td>SPARC instruction scheduler</td>
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</tr>
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<tr class="doc_table">
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<td>selectiondag.o</td>
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<td>Aggressive instruction selector for Directed Acyclic Graphs</td>
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</tr>
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<tr class="doc_table">
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<td>transformutils.o</td>
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<td>Utilities for code transformations</td>
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</tr>
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<tr class="doc_table">
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<td>ipa.o</td>
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<td>Inter-Procedural Analysis Optimizations</td>
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</tr>
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<tr class="doc_table">
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<td>select.o</td>
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<td>SPARC instruction selector</td>
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</tr>
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<tr class="doc_table">
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<td>cwriter.o</td>
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<td>"C" Code Writer</td>
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</tr>
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<tr class="doc_table">
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<td>profpaths.o</td>
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<td>Path profiling instrumentation</td>
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</tr>
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<tr class="doc_table">
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<td>regalloc.o</td>
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<td>Register Allocation</td>
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</tr>
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<tr class="doc_table">
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<td>instrument.o</td>
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<td>Instrumentation? Of What?</td>
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</tr>
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<tr class="doc_table">
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<td>datastructure.o</td>
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<td>Data Structure Analysis</td>
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</tr>
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<tr class="doc_table">
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<td>codegen.o</td>
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<td>Native code generation</td>
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</tr>
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<tr class="doc_table">
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<td>livevar.o</td>
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<td>Live Variable Analysis</td>
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</tr>
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<tr class="doc_table">
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<td>vmcore.o</td>
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<td>Virtual Machine Core</td>
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</tr>
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<tr class="doc_table">
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<td>lli-interpreter.o</td>
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<td>Interpreter for LLVM ByteCode</td>
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</tr>
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<tr class="doc_table">
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<td>lli-jit.o</td>
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<td>
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Just-In-Time Compiler For LLVM ByteCode
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</td>
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</tr>
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<tr class="doc_table">
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<td>executionengine.o</td>
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<td>Engine for LLI</td>
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</tr>
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<tr class="doc_table">
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<td>debugger.o</td>
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<td>Source Level Debugging Support</td>
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</tr>
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<tr class="doc_table">
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<td>analysis.o</td>
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<td>General Framework For Analysis?</td>
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</tr>
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<tr class="doc_table">
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<td>sparc.o</td>
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<td>Sun SPARC Processor Specific</td>
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</tr>
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<tr class="doc_table">
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<td>target.o</td>
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<td>Target Machine Support?</td>
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</tr>
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<tr class="doc_table">
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<td>transforms.o</td>
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<td>Code Transformations</td>
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</tr>
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<tr class="doc_table">
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<td>x86.o</td>
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<td>Intel x86 Processor Specific</td>
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</tr>
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<tr class="doc_table">
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<td>powerpc.o</td>
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<td>PowerPC Processor Specific</td>
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</tr>
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<tr class="doc_table">
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<td>scalaropts.o</td>
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<td>Optimizations For Scalars</td>
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</tr>
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<tr class="doc_table">
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<td>ipo.o</td>
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<td>Inter-Procedural Optimization</td>
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</tr>
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<tr class="doc_table">
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<td>trace.o</td>
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<td>Support For Tracing/Debugging?</td>
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</tr>
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<tr class="doc_table">
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<td>profile_rt.o</td>
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<td>Runtime Library For Profiler</td>
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</tr>
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<tr class="doc_table">
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<td>sample.o</td>
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<td>Sample Program ?</td>
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</tr>
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<tr class="doc_table">
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<td>stkr_compiler.o</td>
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<td>Stacker Language Compiler Library</td>
|
2004-02-27 06:28:34 +00:00
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</tr>
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<tr class="doc_table">
|
2004-09-05 02:56:39 +00:00
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|
<td>stkr_runtime.o</td>
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|
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|
<td>Stacker Language Runtime Library</td>
|
2004-02-27 06:28:34 +00:00
|
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|
</tr>
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|
</table>
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</div>
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<p></p>
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|
<!-- ======================================================================= -->
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<div class="doc_section"><a name="rot">Linkage Rules Of Thumb</a></div>
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<div class="doc_text">
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|
<p>This section contains various "rules of thumb" about what files you
|
|
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|
|
should link into your programs.</p>
|
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</div>
|
|
|
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|
<!-- ======================================================================= -->
|
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|
<div class="doc_subsection"><a name="always">Always Link vmcore.o support.a</a>
|
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|
|
</div>
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>No matter what you do with LLVM, you'll always need to link with vmcore.o
|
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|
and support.a.</p>
|
|
|
|
|
</div>
|
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|
<!-- ======================================================================= -->
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<div class="doc_subsection"><a name="Placeholder">Placeholder</a></div>
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<div class="doc_text">
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<p>Need more rules of thumb here.</p>
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</div>
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<!-- ======================================================================= -->
|
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<hr>
|
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<div class="doc_footer">
|
|
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|
|
<address><a href="mailto:rspencer@x10sys.com">Reid Spencer</a></address>
|
|
|
|
|
<a href="http://llvm.cs.uiuc.edu">The LLVM Compiler Infrastructure</a>
|
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<br>Last modified: $Date$ </div>
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</body>
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</html>
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<!-- vim: sw=2 ts=2 ai
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