[SystemZ] Update README

We now use MVST, CLST and SRST for the obvious cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188781 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/SystemZ/README.txt b/lib/Target/SystemZ/README.txt
index 58e631f88c0ddfb0c5b98305fd491747d7408a14..4107685e307e1b1e5a19eedb3b8a90cc4f3fdcab 100644 (file)
--- a/lib/Target/SystemZ/README.txt
+++ b/lib/Target/SystemZ/README.txt
@@ -73,10 +73,8 @@ Likewise memcmp and CLC.  MVCLE and CLCLE could be useful too.
 
 --
 
-We don't optimize string operations.
-
-MVST, CLST, SRST and CUSE could be useful here.  Some of the TRANSLATE
-family might be too, although they are probably more difficult to exploit.
+We don't use CUSE or the TRANSLATE family of instructions for string
+operations.  The TRANSLATE ones are probably more difficult to exploit.
 
 --