Abstract notion of "pre-compiled".

Previously, this has been tied to --target=pir.

Author: jnthn

src/HLL/Compiler.pm

@@ -242,6 +242,10 @@ class HLL::Compiler {
 
         %adverbs.update(%opts);
         self.usage($program-name) if %adverbs<help>  || %adverbs<h>;
+        
+        if !nqp::existskey(%adverbs, 'precomp') && %adverbs<target> eq 'pir' {
+            %adverbs<precomp> := 1;
+        }
 
         pir::load_bytecode__vs('dumper.pbc');
         pir::load_bytecode__vs('PGE/Dumper.pbc');

src/HLL/World.pm

@@ -55,7 +55,7 @@ class HLL::World {
         %!addr_to_slot    := nqp::hash();
         @!fixup_tasks     := nqp::list();
         @!load_dependency_tasks := nqp::list();
-        $!precomp_mode    := %*COMPILING<%?OPTIONS><target> eq 'pir';
+        $!precomp_mode    := %*COMPILING<%?OPTIONS><precomp>;
         $!num_code_refs   := 0;
         $!code_ref_blocks := [];
         nqp::scsetdesc($!sc, $description);