# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1313967214 -7200
# Node ID 664bd4ab235a4b7d5a9b84673f17e67028e4ddb7
# Parent  eb806eaca9d5dd27957eb607950340777c1be0f1
Updated the "to do" list. Moved some code around.

diff -r eb806eaca9d5 -r 664bd4ab235a TO_DO.txt
--- a/TO_DO.txt	Sun Aug 21 23:59:52 2011 +0200
+++ b/TO_DO.txt	Mon Aug 22 00:53:34 2011 +0200
@@ -1,10 +1,6 @@
 Low-Level Instructions and Macro Instructions
 =============================================
 
-Instructions manipulated through the temporary infrastructure are reused and can be
-corrupted by set_source and set_target operations. It might be better if such operations
-cloned the instructions or if new instructions were explicitly created.
-
 Have contexts and values stored separately in memory. This involves eliminating DataValue
 and storing attributes using two words.
 
@@ -23,9 +19,6 @@
 Attempt to use result data directly instead of transferring it explicitly to the working
 registers and then using it.
 
-Perhaps store resultant working values on Block instances in order to better track active
-values.
-
 Class and Module Attribute Assignment
 =====================================
 
diff -r eb806eaca9d5 -r 664bd4ab235a micropython/opt.py
--- a/micropython/opt.py	Sun Aug 21 23:59:52 2011 +0200
+++ b/micropython/opt.py	Mon Aug 22 00:53:34 2011 +0200
@@ -257,6 +257,11 @@
 
         return self.get_active_value() and self.is_simple_input(self.get_active_value())
 
+    # Indicate whether the active instruction can be used in place of access
+    # to a temporary variable retaining the result of the last instruction.
+
+    have_temp_compatible_access = have_simple_input
+
     def have_self_input(self, unit):
 
         """
@@ -270,11 +275,6 @@
         expr = self.get_active_value()
         return expr and isinstance(expr, LoadName) and expr.attr.name == "self"
 
-    # Indicate whether the active instruction can be used in place of access
-    # to a temporary variable retaining the result of the last instruction.
-
-    have_temp_compatible_access = have_simple_input
-
     def have_correct_self_for_target(self, context, unit):
 
         "Return whether the 'context' is compatible with the given 'unit'."