[pypy-svn] r78876 - pypy/extradoc/planning

fijal at codespeak.net fijal at codespeak.net
Mon Nov 8 16:17:24 CET 2010


Author: fijal
Date: Mon Nov  8 16:17:22 2010
New Revision: 78876

Modified:
   pypy/extradoc/planning/jit.txt
Log:
generators, again

Modified: pypy/extradoc/planning/jit.txt
==============================================================================
--- pypy/extradoc/planning/jit.txt	(original)
+++ pypy/extradoc/planning/jit.txt	Mon Nov  8 16:17:22 2010
@@ -34,6 +34,13 @@
   is a compile time constant (and call unrolled version of string formatting
   loop in this case).
 
+- generators are still fairly inefficient. We get a lot of:
+  i = ptr_eq(frame, some_other_frame)
+  guard_value(i, 0)
+  every second instruction.
+
+  there is also manipulating of valuestackdepth and such.
+
 
 OPTIMIZATIONS
 -------------



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