Here is the Sun compiler.

It is "3L SPARC IMP version 1.0.6".

It needs Solaris 1.x to link, but the compiler and
the resulting executables will run on any Solaris version.

 Name                    Last modified      Size  Description
 imp-sun.tar             2008-10-13 07:46  360K  
 imp                     2008-10-13 07:45  224K  
 libimp.a                2008-10-13 07:46   79K  
 hello                   2008-10-13 07:46   32K  
 sysspecs.inc            2008-10-13 07:46  2.2K  
 connect.inc             2008-10-13 07:46  1.6K  
 maths.inc               2008-10-13 07:46  1.2K  
 signal.inc              2008-10-13 07:46  965   
 cliparse.inc            2008-10-13 07:46  797   
 ascii.inc               2008-10-13 07:45  629   
 heap.inc                2008-10-13 07:46  548   
 archaisms.inc           2008-10-13 07:46  441   
 textutils.inc           2008-10-13 07:46  331   
 hello.o                 2008-10-13 07:46  284   
 README                  2008-10-13 07:46  174   
 lognames.inc            2008-10-13 07:45  140   
 console.inc             2008-10-13 07:46  138   
 hello.imp               2008-10-13 07:46   55   
 an_example.csh          2008-10-13 07:46   52