The B<llvm-gcc> command is the LLVM C front end. It is a modified
version of gcc that compiles C/ObjC programs into native objects, LLVM
-bytecode or LLVM assembly language, depending upon the options.
+bitcode or LLVM assembly language, depending upon the options.
By default, B<llvm-gcc> compiles to native objects just like GCC does. If the
-B<-emit-llvm> option is given then it will generate LLVM bytecode files instead.
-If B<-S> (assembly) is also given, then it will generate LLVM assembly.
+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.
+be a bitcode library.
=item B<-emit-llvm>
-Make the output be LLVM bytecode (or assembly) instead of native object (or
-assembly).
+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