Add new function attribute - noredzone. 
Update code generator to use this attribute and remove DisableRedZone target option.
Update llc to set this attribute when -disable-red-zone command line option is used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72894 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/LLToken.h b/lib/AsmParser/LLToken.h
index d8bd38a..2d1cfa5 100644
--- a/lib/AsmParser/LLToken.h
+++ b/lib/AsmParser/LLToken.h
@@ -80,6 +80,7 @@
     kw_optsize,
     kw_ssp,
     kw_sspreq,
+    kw_noredzone,
 
     kw_type,
     kw_opaque,