mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 04:30:12 +00:00
4ad0d571fa
Expand a bit on various '--*-graph' options. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67836 91177308-0d34-0410-b5e6-96231b3b80d8
171 lines
4.2 KiB
Plaintext
171 lines
4.2 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
llvmc - The LLVM Compiler Driver (WIP)
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
B<llvmc> [I<options>] I<filenames...>
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
B<llvmc> is a configurable driver for invoking other LLVM (and non-LLVM) tools
|
|
in order to compile, optimize and link software for multiple languages. For
|
|
those familiar with FSF's B<gcc> tool, it is very similar. Please note that
|
|
B<llvmc> is considered an experimental tool.
|
|
|
|
=head1 OPTIONS
|
|
|
|
=head2 Built-in Options
|
|
|
|
LLVMC has some built-in options that can't be overridden in the
|
|
configuration libraries.
|
|
|
|
=over
|
|
|
|
=item B<-o> I<filename>
|
|
|
|
Output file name.
|
|
|
|
=item B<-x> I<language>
|
|
|
|
Specify the language of the following input files until the next B<-x>
|
|
option.
|
|
|
|
=item B<-load> I<plugin_name>
|
|
|
|
Load the specified plugin DLL. Example:
|
|
S<-load $LLVM_DIR/Release/lib/LLVMCSimple.so>.
|
|
|
|
=item B<-v> or B<--verbose>
|
|
|
|
Enable verbose mode, i.e. print out all executed commands.
|
|
|
|
=item B<--check-graph>
|
|
|
|
Check the compilation for common errors like mismatched output/input language
|
|
names, multiple default edges and cycles. Because of plugins, these checks can't
|
|
be performed at compile-time. Exit with code zero if no errors were found, and
|
|
return the number of found errors otherwise. Hidden option, useful for debugging
|
|
LLVMC plugins.
|
|
|
|
=item B<--view-graph>
|
|
|
|
Show a graphical representation of the compilation graph and exit. Requires that
|
|
you have I<dot> and I<gv> programs installed. Hidden option, useful for
|
|
debugging LLVMC plugins.
|
|
|
|
=item B<--write-graph>
|
|
|
|
Write a I<compilation-graph.dot> file in the current directory with the
|
|
compilation graph description in Graphviz format (identical to the file used by
|
|
the B<--view-graph> option). The B<-o> option can be used to set the output file
|
|
name. Hidden option, useful for debugging LLVMC plugins.
|
|
|
|
=item B<--save-temps>
|
|
|
|
Write temporary files to the current directory and do not delete them
|
|
on exit. Hidden option, useful for debugging.
|
|
|
|
=item B<--help>
|
|
|
|
Print a summary of command-line options and exit.
|
|
|
|
=item B<--help-hidden>
|
|
|
|
Print a summary of command-line options and exit. Print help even for
|
|
options intended for developers.
|
|
|
|
=item B<--version>
|
|
|
|
Print version information and exit.
|
|
|
|
=item B<@>I<file>
|
|
|
|
Read command-line options from I<file>. The options read are inserted
|
|
in place of the original @I<file> option. If I<file> does not exist, or
|
|
cannot be read, then the option will be treated literally, and not
|
|
removed.
|
|
|
|
Options in I<file> are separated by whitespace. A whitespace character
|
|
may be included in an option by surrounding the entire option in
|
|
either single or double quotes. Any character (including a backslash)
|
|
may be included by prefixing the character to be included with a
|
|
backslash. The file may itself contain additional @I<file> options;
|
|
any such options will be processed recursively.
|
|
|
|
|
|
=back
|
|
|
|
|
|
=head2 Control Options
|
|
|
|
By default, LLVMC is built with some standard configuration libraries
|
|
that define the following options:
|
|
|
|
=over
|
|
|
|
=item B<-clang>
|
|
|
|
Use Clang instead of llvm-gcc.
|
|
|
|
=item B<-opt>
|
|
|
|
Enable optimization passes with B<opt>. To pass options to the B<opt> program
|
|
use the B<-Wo,> option.
|
|
|
|
=item B<-I> I<directory>
|
|
|
|
Add a directory to the header file search path. This option can be
|
|
repeated.
|
|
|
|
=item B<-L> I<directory>
|
|
|
|
Add I<directory> to the library search path. This option can be
|
|
repeated.
|
|
|
|
=item B<-l>I<name>
|
|
|
|
Link in the library libI<name>.[bc | a | so]. This library should
|
|
be a bitcode library.
|
|
|
|
=item B<-emit-llvm>
|
|
|
|
Make the output be LLVM bitcode (with B<-c>) or assembly (with B<-S>) instead
|
|
of native object (or assembly). If B<-emit-llvm> is given without either B<-c>
|
|
or B<-S> it has no effect.
|
|
|
|
=item B<-Wa>
|
|
|
|
Pass options to assembler.
|
|
|
|
=item B<-Wl>
|
|
|
|
Pass options to linker.
|
|
|
|
=item B<-Wo>
|
|
|
|
Pass options to opt.
|
|
|
|
=back
|
|
|
|
=head1 EXIT STATUS
|
|
|
|
If B<llvmc> succeeds, it will exit with code 0. Otherwise, if an
|
|
error occurs, it will exit with a non-zero value. If one of the
|
|
compilation tools returns a non-zero status, pending actions will be
|
|
discarded and B<llvmc> will return the same result code as the failing
|
|
compilation tool.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<llvm-gcc|llvmgcc>, L<llvm-g++|llvmgxx>, L<llvm-as|llvm-as>,
|
|
L<llvm-dis|llvm-dis>, L<llc|llc>, L<llvm-link|llvm-link>
|
|
|
|
=head1 AUTHORS
|
|
|
|
Maintained by the LLVM Team (L<http://llvm.org>).
|
|
|
|
=cut
|