Add function attribute 'optnone'.

This function attribute indicates that the function is not optimized
by any optimization or code generator passes with the 
exception of interprocedural optimization passes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189101 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/vim/llvm.vim b/utils/vim/llvm.vim
index 6c87cff..b28c07f 100644
--- a/utils/vim/llvm.vim
+++ b/utils/vim/llvm.vim
@@ -48,7 +48,7 @@
 syn keyword llvmKeyword localdynamic localexec minsize module monotonic
 syn keyword llvmKeyword msp430_intrcc naked nest noalias nocapture
 syn keyword llvmKeyword noimplicitfloat noinline nonlazybind noredzone noreturn
-syn keyword llvmKeyword nounwind optsize personality private protected
+syn keyword llvmKeyword nounwind optnone optsize personality private protected
 syn keyword llvmKeyword ptx_device ptx_kernel readnone readonly release
 syn keyword llvmKeyword returns_twice sanitize_thread sanitize_memory
 syn keyword llvmKeyword section seq_cst sideeffect signext singlethread