diff --git a/llvm/utils/kate/llvm.xml b/llvm/utils/kate/llvm.xml
--- a/llvm/utils/kate/llvm.xml
+++ b/llvm/utils/kate/llvm.xml
@@ -96,6 +96,7 @@
       <item> ssp </item>
       <item> sspreq </item>
       <item> sspstrong </item>
+      <item> willreturn </item>
     </list>
     <list name="types">
       <item> addrspace </item>
diff --git a/llvm/utils/vim/syntax/llvm.vim b/llvm/utils/vim/syntax/llvm.vim
--- a/llvm/utils/vim/syntax/llvm.vim
+++ b/llvm/utils/vim/syntax/llvm.vim
@@ -167,6 +167,7 @@
       \ volatile
       \ weak
       \ weak_odr
+      \ willreturn
       \ within
       \ writeonly
       \ x86_64_sysvcc
diff --git a/llvm/utils/vscode/llvm/syntaxes/ll.tmLanguage.yaml b/llvm/utils/vscode/llvm/syntaxes/ll.tmLanguage.yaml
--- a/llvm/utils/vscode/llvm/syntaxes/ll.tmLanguage.yaml
+++ b/llvm/utils/vscode/llvm/syntaxes/ll.tmLanguage.yaml
@@ -265,6 +265,7 @@
             \\bweak\\b|\
             \\bweak_odr\\b|\
             \\bwithin\\b|\
+            \\bwillreturn\\b|\
             \\bwriteonly\\b|\
             \\bx86_64_sysvcc\\b|\
             \\bwin64cc\\b|\