maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

For PR1152: 

Update documentation to reflect that this isn't a full-blown executable
any more.

llvm-svn: 33807
This commit is contained in:
Reid Spencer 2007-02-03 00:44:47 +00:00
parent f309d13677
commit 04c5761386
1 changed files with 14 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
llvm/docs/CommandGuide/gccas.pod
View File

@ -2,7 +2,7 @@
=head1 NAME =head1 NAME
gccas - optimizing LLVM assembler gccas - convenience script to run B<llvm-as> and B<opt>
=head1 SYNOPSIS =head1 SYNOPSIS
@ -10,19 +10,19 @@ B<gccas> [I<options>] I<filename>
=head1 DESCRIPTION =head1 DESCRIPTION
The B<gccas> utility takes an LLVM assembly file generated by the The B<gccas> shell script passes an LLVM assembly file through the B<llvm-as>
L<llvmgcc|llvmgcc> or L<llvmg++|llvmgxx> front-ends and converts and B<opt> programs to generate an optimized bytecode file. Its name is an
it into an LLVM bytecode file. It is primarily used by the GCC historical artifact from when it was a full executable used to process LLVM
front end, and as such, attempts to mimic the interface provided assembly generated by the L<llvmgcc|llvmgcc> or L<llvmg++|llvmgxx> front-ends.
by the default system assembler so that it can act as a "drop-in" Currently this is a shell script that simulates what the old B<gccas> executable
replacement. once did.
B<gccas> performs a number of optimizations on the input program, B<gccas> performs a number of optimizations on the input program, including but
including but not limited to: promotion of stack values to SSA not limited to: promotion of stack values to SSA registers; elimination of dead
registers; elimination of dead globals, function arguments, code, globals, function arguments, code, and types; tail-call elimination;
and types; tail-call elimination; loop-invariant code motion; global loop-invariant code motion; global common-subexpression elimination; and
common-subexpression elimination; and sparse conditional constant sparse conditional constant propagation. It accomplishes this by using the
propagation. B<-std-compile-opts> option to the B<opt> tool.
=head1 OPTIONS =head1 OPTIONS
@ -71,7 +71,7 @@ status.
=head1 SEE ALSO =head1 SEE ALSO
L<llvm-as|llvm-as>, L<gccld|gccld> L<llvm-as|llvm-as>, L<opt|opt>, L<gccld|gccld>
=head1 AUTHORS =head1 AUTHORS