Consolidate some encodings

1 files changed, 17 insertions, 7 deletions

diff --git a/TODO b/TODO
index 5339ab5..d99b986 100644
--- a/TODO
+++ b/TODO
@@ -1,9 +1,18 @@
-Consider changing labels to be integers instead of strings. This will
-make it possible in many cases for code to be stored in static const
-arrays.
+- The pextrw instruction got a new variant in SSE 4.1 where the
+destination can now be either a memory location or a register. In
+earlier versions it could only be a register. That means this code
 
-Storing the encoding in the info field. Maybe rename info to encoding
-or details.
+         pinsrw eax, xmm1, IMM (7)
+
+should be encoded with the earlier version in preference to the newer
+one.
+
+- Consider changing labels to be integers instead of strings. This
+will make it possible in many cases for code to be stored in static
+const arrays.
+
+- Storing the encoding in the info field. Maybe rename info to
+encoding or details.
 
 
 Feature checking
@@ -20,8 +29,9 @@ be used. Then,
    - For code that is doing its own checking, escape hatches will be
      necessary.
 
-An issue with this is that we may want to specialize at the individual
-instruction level rather than at the full assembly block level. 
+An potential issue with this is that we may want to specialize at the
+individual instruction level rather than at the full assembly block
+level.
 
 
 Test suite: