Add concat32_i64 and concat_tl_i64 ops

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5282 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/tcg/README b/tcg/README
index b4d07b6..2eeb669 100644
--- a/tcg/README
+++ b/tcg/README
@@ -269,6 +269,10 @@
 Construct t0 (64-bit) taking the low half from t1 (32 bit) and the high half
 from t2 (32 bit).
 
+* concat32_i64 t0, t1, t2
+Construct t0 (64-bit) taking the low half from t1 (64 bit) and the high half
+from t2 (64 bit).
+
 ********* Load/Store
 
 * ld_i32/i64 t0, t1, offset