more mumbling

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25826 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt
index fbe7e9dbf716e52ab8fd8e4936c1c63c027a9889..b0b17da0e99fe5cb7d2d7f28028506f00ba71e8f 100644 (file)
--- a/lib/Target/X86/README.txt
+++ b/lib/Target/X86/README.txt
@@ -310,3 +310,7 @@ _cmp:
    before prolog-epilog rewriting.
 2) We shouldn't load into XMM regs only to store it back.
 
+//===---------------------------------------------------------------------===//
+
+Think about doing i64 math in SSE regs.
+