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author | Reid Spencer <rspencer@reidspencer.com> | 2004-09-05 20:50:22 +0000 |
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committer | Reid Spencer <rspencer@reidspencer.com> | 2004-09-05 20:50:22 +0000 |
commit | 77d901978989c38c3cb9fc3a5b7e56df6cef7647 (patch) | |
tree | 1af31104704bf2cf0a69bba70dcd45c853e03895 /docs/GettingStarted.html | |
parent | 8284f1fc789dfcd98e2df628a1c0b5a63ecb4b8b (diff) | |
download | external_llvm-77d901978989c38c3cb9fc3a5b7e56df6cef7647.zip external_llvm-77d901978989c38c3cb9fc3a5b7e56df6cef7647.tar.gz external_llvm-77d901978989c38c3cb9fc3a5b7e56df6cef7647.tar.bz2 |
HTML 4.01 STRICT compliance.
Added missing definitions
Noted the difference between llvm/test and llvm-test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16193 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/GettingStarted.html')
-rw-r--r-- | docs/GettingStarted.html | 266 |
1 files changed, 150 insertions, 116 deletions
diff --git a/docs/GettingStarted.html b/docs/GettingStarted.html index 059db91..ff7feb7 100644 --- a/docs/GettingStarted.html +++ b/docs/GettingStarted.html @@ -41,6 +41,7 @@ <li><a href="#lib"><tt>llvm/lib</tt></a> <li><a href="#runtime"><tt>llvm/runtime</tt></a> <li><a href="#test"><tt>llvm/test</tt></a> + <li><a href="#llvmtest"><tt>llvm-test</tt></a> <li><a href="#tools"><tt>llvm/tools</tt></a> <li><a href="#utils"><tt>llvm/utils</tt></a> </ol></li> @@ -890,9 +891,7 @@ The following is a brief introduction to code layout:</p> </div> <!-- ======================================================================= --> -<div class="doc_subsection"> - <a name="cvsdir"><tt>CVS</tt> directories</a> -</div> +<div class="doc_subsection"><a name="cvsdir"><tt>CVS</tt> directories</a></div> <div class="doc_text"> @@ -902,39 +901,36 @@ the most part these can just be ignored.</p> </div> <!-- ======================================================================= --> -<div class="doc_subsection"> - <a name="include"><tt>llvm/include</tt></a> -</div> +<div class="doc_subsection"><a name="include"><tt>llvm/include</tt></a></div> <div class="doc_text"> <p>This directory contains public header files exported from the LLVM library. The three main subdirectories of this directory are:</p> -<ol> - <li><tt>llvm/include/llvm</tt> - This directory contains all of the LLVM - specific header files. This directory also has subdirectories for - different portions of LLVM: <tt>Analysis</tt>, <tt>CodeGen</tt>, - <tt>Target</tt>, <tt>Transforms</tt>, etc...</li> - - <li><tt>llvm/include/Support</tt> - This directory contains generic - support libraries that are independent of LLVM, but are used by LLVM. - For example, some C++ STL utilities and a Command Line option processing - library store their header files here.</li> - - <li><tt>llvm/include/Config</tt> - This directory contains header files - configured by the <tt>configure</tt> script. They wrap "standard" UNIX - and C header files. Source code can include these header files which - automatically take care of the conditional #includes that the - <tt>configure</tt> script generates.</li> -</ol> - +<dl> + <dt><tt><b>llvm/include/llvm</b></tt></dt> + <dd>This directory contains all of the LLVM specific header files. This + directory also has subdirectories for different portions of LLVM: + <tt>Analysis</tt>, <tt>CodeGen</tt>, <tt>Target</tt>, <tt>Transforms</tt>, + etc...</dd> + + <dt><tt><b>llvm/include/llvm/Support</b></tt></dt> + <dd>This directory contains generic support libraries that are provided with + LLVM but not necessarily specific to LLVM. For example, some C++ STL utilities + and a Command Line option processing library store their header files here. + </dd> + + <dt><tt><b>llvm/include/llvm/Config</b></tt></dt> + <dd>This directory contains header files configured by the <tt>configure</tt> + script. They wrap "standard" UNIX and C header files. Source code can + include these header files which automatically take care of the conditional + #includes that the <tt>configure</tt> script generates.</dd> +</dl> </div> <!-- ======================================================================= --> -<div class="doc_subsection"> - <a name="lib"><tt>llvm/lib</tt></a> -</div> +<div class="doc_subsection"><a name="lib"><tt>llvm/lib</tt></a></div> <div class="doc_text"> @@ -943,49 +939,60 @@ almost all code exists in libraries, making it very easy to share code among the different <a href="#tools">tools</a>.</p> <dl> - <dt><tt>llvm/lib/VMCore/</tt><dd> This directory holds the core LLVM - source files that implement core classes like Instruction and BasicBlock. - - <dt><tt>llvm/lib/AsmParser/</tt><dd> This directory holds the source code - for the LLVM assembly language parser library. + <dt><tt><b>llvm/lib/VMCore/</b></tt></dt> + <dd> This directory holds the core LLVM source files that implement core + classes like Instruction and BasicBlock.</dd> - <dt><tt>llvm/lib/ByteCode/</tt><dd> This directory holds code for reading - and write LLVM bytecode. + <dt><tt><b>llvm/lib/AsmParser/</b></tt></dt> + <dd>This directory holds the source code for the LLVM assembly language parser + library.</dd> - <dt><tt>llvm/lib/CWriter/</tt><dd> This directory implements the LLVM to C - converter. + <dt><tt><b>llvm/lib/ByteCode/</b></tt></dt> + <dd>This directory holds code for reading and write LLVM bytecode.</dd> - <dt><tt>llvm/lib/Analysis/</tt><dd> This directory contains a variety of + <dt><tt><b>llvm/lib/Analysis/</b></tt><dd>This directory contains a variety of different program analyses, such as Dominator Information, Call Graphs, Induction Variables, Interval Identification, Natural Loop Identification, - etc... - - <dt><tt>llvm/lib/Transforms/</tt><dd> This directory contains the source - code for the LLVM to LLVM program transformations, such as Aggressive Dead - Code Elimination, Sparse Conditional Constant Propagation, Inlining, Loop - Invariant Code Motion, Dead Global Elimination, and many others... - - <dt><tt>llvm/lib/Target/</tt><dd> This directory contains files that - describe various target architectures for code generation. For example, - the llvm/lib/Target/SparcV9 directory holds the Sparc machine - description.<br> + etc.</dd> + + <dt><tt><b>llvm/lib/Transforms/</b></tt></dt> + <dd> This directory contains the source code for the LLVM to LLVM program + transformations, such as Aggressive Dead Code Elimination, Sparse Conditional + Constant Propagation, Inlining, Loop Invariant Code Motion, Dead Global + Elimination, and many others.</dd> + + <dt><tt><b>llvm/lib/Target/</b></tt></dt> + <dd> This directory contains files that describe various target architectures + for code generation. For example, the <tt>llvm/lib/Target/SparcV9</tt> + directory holds the Sparc machine description while + <tt>llvm/lib/Target/CBackend</tt> implements the LLVM-to-C converter</dd> - <dt><tt>llvm/lib/CodeGen/</tt><dd> This directory contains the major parts - of the code generator: Instruction Selector, Instruction Scheduling, and - Register Allocation. - - <dt><tt>llvm/lib/Support/</tt><dd> This directory contains the source code - that corresponds to the header files located in - <tt>llvm/include/Support/</tt>. + <dt><tt><b>llvm/lib/CodeGen/</b></tt></dt> + <dd> This directory contains the major parts of the code generator: Instruction + Selector, Instruction Scheduling, and Register Allocation.</dd> + + <dt><tt><b>llvm/lib/Debugger/</b></tt></dt> + <dd> This directory contains the source level debugger library that makes + it possible to instrument LLVM programs so that a debugger could identify + source code locations at which the program is executing.</dd> + + <dt><tt><b>llvm/lib/ExecutionEngine/</b></tt></dt> + <dd> This directory contains libraries for executing LLVM bytecode directly + at runtime in both interpreted and JIT compiled fashions.</dd> + + <dt><tt><b>llvm/lib/Support/</b></tt></dt> + <dd> This directory contains the source code that corresponds to the header + files located in <tt>llvm/include/Support/</tt>.</dd> + + <dt><tt><b>llvm/lib/System/</b></tt></dt> + <dd>This directory contains the operating system abstraction layer that + shields LLVM from platform-specific coding.</dd> </dl> </div> <!-- ======================================================================= --> -<div class="doc_subsection"> - <a name="runtime"><tt>llvm/runtime</tt></a> -</div> - +<div class="doc_subsection"><a name="runtime"><tt>llvm/runtime</tt></a></div> <div class="doc_text"> <p>This directory contains libraries which are compiled into LLVM bytecode and @@ -999,22 +1006,27 @@ end to compile.</p> </div> <!-- ======================================================================= --> -<div class="doc_subsection"> - <a name="test"><tt>llvm/test</tt></a> -</div> - +<div class="doc_subsection"><a name="test"><tt>llvm/test</tt></a></div> <div class="doc_text"> - -<p>This directory contains regression tests and source code that is used to test -the LLVM infrastructure.</p> - + <p>This directory contains feature and regression tests and other basic sanity + checks on the LLVM infrastructure. These are intended to run quickly and cover + a lot of territory without being exhaustive.</p> </div> <!-- ======================================================================= --> -<div class="doc_subsection"> - <a name="tools"><tt>llvm/tools</tt></a> +<div class="doc_subsection"><a name="llvmtest"><tt>llvm-test</tt></a></div> +<div class="doc_text"> + <p>This is not a directory in the normal llvm module, it is a separate CVS + module that must be checked out (usually to <tt>test/projects</tt>). This + module contains a comprehensive correctness, performance and benchmarking test + suite for LLVM. It is a separate CVS module because not every LLVM user is + interested in downloading or building such a comprehensive test. For further + details on this test suite, please see the + <a href="TestingGuide.html">Testing Guide</a> document.</p> </div> +<!-- ======================================================================= --> +<div class="doc_subsection"><a name="tools"><tt>llvm/tools</tt></a></div> <div class="doc_text"> <p>The <b>tools</b> directory contains the executables built out of the @@ -1023,88 +1035,104 @@ always get help for a tool by typing <tt>tool_name --help</tt>. The following is a brief introduction to the most important tools:</p> <dl> - <dt><tt><b>analyze</b></tt> <dd><tt>analyze</tt> is used to run a specific + <dt><tt><b>analyze</b></tt></dt> + <dd><tt>analyze</tt> is used to run a specific analysis on an input LLVM bytecode file and print out the results. It is primarily useful for debugging analyses, or familiarizing yourself with - what an analysis does.<p> + what an analysis does.</dd> - <dt><tt><b>bugpoint</b></tt> <dd><tt>bugpoint</tt> is used to debug + <dt><tt><b>bugpoint</b></tt></dt> + <dd><tt>bugpoint</tt> is used to debug optimization passes or code generation backends by narrowing down the given test case to the minimum number of passes and/or instructions that still cause a problem, whether it is a crash or miscompilation. See <a href="HowToSubmitABug.html">HowToSubmitABug.html</a> for more information - on using <tt>bugpoint</tt>.<p> - - <dt><tt><b>llvm-ar</b></tt> <dd>The archiver produces an archive containing + on using <tt>bugpoint</tt>.</dd> + + <dt><tt><b>llvmc</b></tt></dt> + <dd>The LLVM Compiler Driver. This program can + be configured to utilize both LLVM and non-LLVM compilation tools to enable + pre-processing, translation, optimization, assembly, and linking of programs + all from one command line. <tt>llvmc</tt> also takes care of processing the + dependent libraries found in bytecode. This reduces the need to get the + traditional <tt>-l<name></tt> options right on the command line.</dd> + + <dt><tt><b>llvm-ar</b></tt></dt> + <dd>The archiver produces an archive containing the given LLVM bytecode files, optionally with an index for faster - lookup.<p> + lookup.</dd> - <dt><tt><b>llvm-as</b></tt> <dd>The assembler transforms the human readable - LLVM assembly to LLVM bytecode.<p> + <dt><tt><b>llvm-as</b></tt></dt> + <dd>The assembler transforms the human readable LLVM assembly to LLVM + bytecode.</dd> - <dt><tt><b>llvm-dis</b></tt><dd>The disassembler transforms the LLVM - bytecode to human readable LLVM assembly.<p> + <dt><tt><b>llvm-dis</b></tt></dt> + <dd>The disassembler transforms the LLVM bytecode to human readable + LLVM assembly.</dd> - <dt><tt><b>llvm-link</b></tt><dd> <tt>llvm-link</tt>, not surprisingly, - links multiple LLVM modules into a single program.<p> + <dt><tt><b>llvm-link</b></tt></dt> + <dd><tt>llvm-link</tt>, not surprisingly, links multiple LLVM modules into + a single program.</dd> - <dt><tt><b>lli</b></tt><dd> <tt>lli</tt> is the LLVM interpreter, which + <dt><tt><b>lli</b></tt></dt> + <dd><tt>lli</tt> is the LLVM interpreter, which can directly execute LLVM bytecode (although very slowly...). In addition to a simple interpreter, <tt>lli</tt> also has a tracing mode (entered by specifying <tt>-trace</tt> on the command line). Finally, for architectures that support it (currently only x86 and Sparc), by default, <tt>lli</tt> will function as a Just-In-Time compiler (if the functionality was compiled in), and will execute the code <i>much</i> - faster than the interpreter.<p> + faster than the interpreter.</dd> - <dt><tt><b>llc</b></tt><dd> <tt>llc</tt> is the LLVM backend compiler, which + <dt><tt><b>llc</b></tt></dt> + <dd> <tt>llc</tt> is the LLVM backend compiler, which translates LLVM bytecode to a SPARC or x86 assembly file, or to C code (with - the -march=c option).<p> + the -march=c option).</dd> - <dt><tt><b>llvmgcc</b></tt><dd> <tt>llvmgcc</tt> is a GCC-based C frontend + <dt><tt><b>llvmgcc</b></tt></dt> + <dd><tt>llvmgcc</tt> is a GCC-based C frontend that has been retargeted to emit LLVM code as the machine code output. It works just like any other GCC compiler, taking the typical <tt>-c, -S, -E, -o</tt> options that are typically used. The source code for the <tt>llvmgcc</tt> tool is currently not included in the LLVM CVS tree - because it is quite large and not very interesting.<p> - + because it is quite large and not very interesting. <blockquote> <dl> - <dt><tt><b>gccas</b></tt> <dd>This tool is invoked by the - <tt>llvmgcc</tt> frontend as the "assembler" part of the compiler. This - tool actually assembles LLVM assembly to LLVM bytecode, - performs a variety of optimizations, and outputs LLVM bytecode. Thus - when you invoke <tt>llvmgcc -c x.c -o x.o</tt>, you are causing - <tt>gccas</tt> to be run, which writes the <tt>x.o</tt> file (which is - an LLVM bytecode file that can be disassembled or manipulated just like - any other bytecode file). The command line interface to <tt>gccas</tt> - is designed to be as close as possible to the <b>system</b> - `<tt>as</tt>' utility so that the gcc frontend itself did not have to be - modified to interface to a "weird" assembler.<p> - - <dt><tt><b>gccld</b></tt> <dd><tt>gccld</tt> links together several LLVM - bytecode files into one bytecode file and does some optimization. It is - the linker invoked by the GCC frontend when multiple .o files need to be - linked together. Like <tt>gccas</tt>, the command line interface of - <tt>gccld</tt> is designed to match the system linker, to aid - interfacing with the GCC frontend.</dl><p> + <dt><tt><b>gccas</b></tt></dt> + <dd>This tool is invoked by the <tt>llvmgcc</tt> frontend as the + "assembler" part of the compiler. This tool actually assembles LLVM + assembly to LLVM bytecode, performs a variety of optimizations, and + outputs LLVM bytecode. Thus when you invoke + <tt>llvmgcc -c x.c -o x.o</tt>, you are causing <tt>gccas</tt> to be + run, which writes the <tt>x.o</tt> file (which is an LLVM bytecode file + that can be disassembled or manipulated just like any other bytecode + file). The command line interface to <tt>gccas</tt> is designed to be + as close as possible to the <b>system</b> `<tt>as</tt>' utility so that + the gcc frontend itself did not have to be modified to interface to + a "weird" assembler.</dd> + + <dt><tt><b>gccld</b></tt></dt> + <dd><tt>gccld</tt> links together several LLVM bytecode files into one + bytecode file and does some optimization. It is the linker invoked by + the GCC frontend when multiple .o files need to be linked together. + Like <tt>gccas</tt>, the command line interface of <tt>gccld</tt> is + designed to match the system linker, to aid interfacing with the GCC + frontend.</dd> + </dl> </blockquote> + </dd> - <dt><tt><b>opt</b></tt><dd> <tt>opt</tt> reads LLVM bytecode, applies a + <dt><tt><b>opt</b></tt></dt> + <dd><tt>opt</tt> reads LLVM bytecode, applies a series of LLVM to LLVM transformations (which are specified on the command line), and then outputs the resultant bytecode. The '<tt>opt --help</tt>' command is a good way to get a list of the program transformations - available in LLVM. - + available in LLVM.</dd> </dl> - </div> <!-- ======================================================================= --> -<div class="doc_subsection"> - <a name="utils"><tt>llvm/utils</tt></a> -</div> - +<div class="doc_subsection"><a name="utils"><tt>llvm/utils</tt></a></div> <div class="doc_text"> <p>This directory contains utilities for working with LLVM source code, and some @@ -1144,6 +1172,12 @@ are code generators for parts of LLVM infrastructure.</p> <tt>xemacs `utils/getsources.sh`</tt> from the top of your LLVM source tree.<p> + <dt><tt><b>llvmgrep</b></tt></dt> + <dd>This little tool performs an "egrep -H -n" on each source file in LLVM and + passes to it a regular expression provided on <tt>llvmgrep</tt>'s command + line. This is a very efficient way of searching the source base for a + particular regular expression.</dd> + <dt><tt><b>makellvm</b></tt> <dd>The <tt>makellvm</tt> script compiles all files in the current directory and then compiles and links the tool that is the first argument. For example, assuming you are in the directory @@ -1284,9 +1318,9 @@ out:</p> src="http://www.w3.org/Icons/valid-html401" alt="Valid HTML 4.01!" /></a> <a href="mailto:sabre@nondot.org">Chris Lattner</a><br> + <a href="http://llvm.x10sys.com/rspencer/">Reid Spencer</a><br> <a href="http://llvm.cs.uiuc.edu">The LLVM Compiler Infrastructure</a><br> Last modified: $Date$ </address> - </body> </html> |