mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-29 10:32:47 +00:00
f36e2d5a9a
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13960 91177308-0d34-0410-b5e6-96231b3b80d8
84 lines
1.8 KiB
Plaintext
84 lines
1.8 KiB
Plaintext
|
|
=pod
|
|
|
|
=head1 NAME
|
|
|
|
gccas - optimizing LLVM assembler
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
gccas [options] filename
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
The B<gccas> utility takes an LLVM assembly file generated by the
|
|
L<llvm-gcc|llvm-gcc> or L<llvm-g++|llvm-g++> front-ends and converts
|
|
it into an LLVM bytecode file. It is primarily used by the GCC
|
|
front end, and as such, attempts to mimic the interface provided
|
|
by the default system assembler so that it can act as a "drop-in"
|
|
replacement.
|
|
|
|
B<gccas> performs a number of optimizations on the input program,
|
|
including but not limited to: promotion of stack values to SSA
|
|
registers; elimination of dead globals, function arguments, code,
|
|
and types; tail-call elimination; loop-invariant code motion; global
|
|
common-subexpression elimination; and sparse conditional constant
|
|
propagation.
|
|
|
|
=head1 OPTIONS
|
|
|
|
=over
|
|
|
|
=item B<--help>
|
|
|
|
Print a summary of command line options.
|
|
|
|
=item B<-o> F<filename>
|
|
|
|
Specify the name of the output file which will hold the assembled bytecode.
|
|
|
|
=item B<--disable-inlining>
|
|
|
|
Disable the inlining pass. By default, it is enabled.
|
|
|
|
=item B<--disable-opt>
|
|
|
|
Disable all assembler-time optimization passes.
|
|
|
|
=item B<--enable-correct-eh-support>
|
|
|
|
Instruct the B<-lowerinvoke> pass to insert code for correct exception handling
|
|
support. This is expensive and is by default omitted for efficiency.
|
|
|
|
=item B<--stats>
|
|
|
|
Print statistics.
|
|
|
|
=item B<--time-passes>
|
|
|
|
Record the amount of time needed for each pass and print it to standard
|
|
error.
|
|
|
|
=item B<--verify>
|
|
|
|
Verify each pass result.
|
|
|
|
=back
|
|
|
|
=head1 EXIT STATUS
|
|
|
|
If B<gccas> succeeds, it will exit with an exit status of 0.
|
|
Otherwise, if an error occurs, it will exit with a non-zero exit
|
|
status.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<llvm-as>, L<gccld>
|
|
|
|
=head1 AUTHORS
|
|
|
|
Maintained by the LLVM Team (L<http://llvm.cs.uiuc.edu>).
|
|
|
|
=cut
|
|
|