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diff --git a/openpower/sv/svp_rewrite/svp64.mdwn b/openpower/sv/svp_rewrite/svp64.mdwn
index 68806708d4baace01077d6be2b32833831b860e8..9850931a99595b34702db83e7f00221724a4aff7 100644 (file)
--- a/openpower/sv/svp_rewrite/svp64.mdwn
+++ b/openpower/sv/svp_rewrite/svp64.mdwn
@@ -242,6 +242,8 @@ the default for SUBVL is 1 and its encoding is 0b00 to indicate that SUBVL is ef
 | 10          | `SUBVL=3`           | Sub-vector length of 3 |
 | 11          | `SUBVL=4`           | Sub-vector length of 4 |
 
+The SUBVL encoding value may be thought of as an inclusive range of a sub-vector.  SUBVL=2 represents a vec2, its encoding is 0b01, therefore this may be considered to be elements 0b00 to 0b01 inclusive.
+
 ## MASK/MASK_SRC & MASK_KIND Encoding
 
 One bit (`MASKMODE`) indicates the mode: CR or Int predication.   The two types may not be mixed.