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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
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28
llvm/docs/CommandGuide/gccas.pod
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@ -2,7 +2,7 @@
=head1 NAME
gccas - optimizing LLVM assembler
gccas - convenience script to run B<llvm-as> and B<opt>
=head1 SYNOPSIS
@ -10,19 +10,19 @@ B<gccas> [I<options>] I<filename>
=head1 DESCRIPTION
The B<gccas> utility takes an LLVM assembly file generated by the
L<llvmgcc|llvmgcc> or L<llvmg++|llvmgxx> 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.
The B<gccas> shell script passes an LLVM assembly file through the B<llvm-as>
and B<opt> programs to generate an optimized bytecode file. Its name is an
historical artifact from when it was a full executable used to process LLVM
assembly generated by the L<llvmgcc|llvmgcc> or L<llvmg++|llvmgxx> front-ends.
Currently this is a shell script that simulates what the old B<gccas> executable
once did.
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.
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. It accomplishes this by using the
B<-std-compile-opts> option to the B<opt> tool.
=head1 OPTIONS
@ -71,7 +71,7 @@ status.
=head1 SEE ALSO
L<llvm-as|llvm-as>, L<gccld|gccld>
L<llvm-as|llvm-as>, L<opt|opt>, L<gccld|gccld>
=head1 AUTHORS