Start overhauling compiler. It was working at least minimally

right up until the final tweak of B.xs to add threadsv_names
at which point building it provokes a seg fault in perl while
doing the xsubpp :-(.

p4raw-id: //depot/perl@357

diff --git a/op.h b/op.h
index fbb5b8c..471ace0 100644 (file)
--- a/op.h
+++ b/op.h
@@ -274,6 +274,8 @@ struct loop {
 #define OA_DEFGV 128
 
 /* The next 4 bits encode op class information */
+#define OA_CLASS_MASK (15 << 8)
+
 #define OA_BASEOP (0 << 8)
 #define OA_UNOP (1 << 8)
 #define OA_BINOP (2 << 8)