I shrunk struct context, so remove it from perltodo.

p4raw-id: //depot/perl@29128

diff --git a/pod/perltodo.pod b/pod/perltodo.pod
index 7b0bcd7..c85174e 100644 (file)
--- a/pod/perltodo.pod
+++ b/pod/perltodo.pod
@@ -380,23 +380,6 @@ as part of exercising your skills with coverage and profiling tools you might
 want to determine what ops I<really> are the most commonly used. And in turn
 suggest evictions and promotions to achieve a better F<pp_hot.c>.
 
-=head2 Shrink struct context
-
-In F<cop.h>, we have
-
-    struct context {
-        U32            cx_type;        /* what kind of context this is */
-        union {
-       struct block    cx_blk;
-       struct subst    cx_subst;
-        } cx_u;
-    };
-
-There are less than 256 values for C<cx_type>, and the constituent parts
-C<struct block> and C<struct subst> both contain some C<U8> and C<U16> fields,
-so it should be possible to move them to the first word, and share space with
-a C<U8> C<cx_type>, saving 1 word.
-
 =head2 Allocate OPs from arenas
 
 Currently all new OP structures are individually malloc()ed and free()d.