=head1 DESCRIPTION
The B<llvm-gcc> command is the LLVM C front end. It is a modified
-version of gcc that takes C programs and compiles them into LLVM
-bytecode or assembly language, depending upon the options.
+version of gcc that compiles C/ObjC programs into native objects, LLVM
+bitcode or LLVM assembly language, depending upon the options.
-Unless the B<-S> option is specified, B<llvm-gcc> will use the
-L<gccas|gccas> program to perform some optimizations and create an
-LLVM bytecode file. Unless the B<-c> option is specified, B<llvm-gcc>
-will also use the L<gccld|gccld> program to perform further
-optimizations and link the resulting bytecode file(s) with support
-libraries to create an executable program.
+By default, B<llvm-gcc> compiles to native objects just like GCC does. If the
+B<-emit-llvm> and B<-c> options are given then it will generate LLVM bitcode files
+instead. If B<-emit-llvm> and B<-S> are given, then it will generate LLVM
+assembly.
Being derived from the GNU Compiler Collection, B<llvm-gcc> has many
of gcc's features and accepts most of gcc's options. It handles a
-number of gcc's extensions to the C programming language.
+number of gcc's extensions to the C programming language. See the gcc
+documentation for details.
=head1 OPTIONS
Print a summary of command line options.
-=item B<-S>
-
-Do not generate an LLVM bytecode file. Rather, compile the source
-file into an LLVM assembly language file.
-
-=item B<-c>
-
-Do not generate a linked executable. Rather, compile the source
-file into an LLVM bytecode file. This bytecode file can then be
-linked with other bytecode files later on to generate a full LLVM
-executable.
-
=item B<-o> I<filename>
Specify the output file to be I<filename>.
=item B<-l>I<name>
Link in the library libI<name>.[bc | a | so]. This library should
-be a bytecode library.
-
-=item B<-Wa,>I<option>
-
-Pass I<option> to gccas
-
-=item B<-Wl,>I<option>
-
-Pass I<option> to gccld
+be a bitcode library.
-=item B<-Wa,-disable-inlining -Wl,-disable-inlining>
+=item B<-emit-llvm>
-Fully disable all inlining
+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.
=back