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* Alphabetized order of tools

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* Added blurb about `bugpoint'
* Fixed some grammar issues
* Added blurb about `llvm-link'
* Took out the part about the `lli debugger' which disappeared


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8900 91177308-0d34-0410-b5e6-96231b3b80d8
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Misha Brukman 2003-10-06 19:23:34 +00:00
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docs/GettingStarted.html
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@ -815,26 +815,47 @@
following is a brief introduction to the most important tools.</p>
<dl compact>
<dt>
<dt><tt><b>analyze</b></tt><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>
<dt><tt><b>bugpoint</b></tt><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
the given LLVM bytecode files, optionally with an index for faster
lookup.<p>
<dt><tt><b>llvm-as</b></tt><dd>The assembler transforms the human readable
LLVM assembly to LLVM bytecode.<p>
<dt><tt><b>llvm-dis</b></tt><dd>The disassembler transforms the LLVM
bytecode to human readable LLVM assembly. Additionally it can convert
bytecode to human readable LLVM assembly. Additionally, it can convert
LLVM bytecode to C, which is enabled with the <tt>-c</tt> option.<p>
<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>lli</b></tt><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> is also has debugger and tracing
modes (entered by specifying <tt>-debug</tt> or <tt>-trace</tt> on the
command line, respectively). 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>
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>
<dt><tt><b>llc</b></tt><dd> <tt>llc</tt> is the LLVM backend compiler,
which translates LLVM bytecode to a SPARC or x86 assembly file.<p>
<dt><tt><b>llvmgcc</b></tt><dd> <tt>llvmgcc</tt> is a GCC based C frontend
<dt><tt><b>llvmgcc</b></tt><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
@ -845,15 +866,14 @@
<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>
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
@ -869,12 +889,6 @@
command is a good way to get a list of the program transformations
available in LLVM.<p>
<dt><tt><b>analyze</b></tt><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>
</dl>
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