Clarify limitations of a ModulePass requiring a FunctionPass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78566 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/WritingAnLLVMPass.html b/docs/WritingAnLLVMPass.html
index b8ac9e9..ed6b4d6 100644
--- a/docs/WritingAnLLVMPass.html
+++ b/docs/WritingAnLLVMPass.html
@@ -497,7 +497,7 @@
 the getAnalysis interface
 <tt>getAnalysis&lt;DominatorTree&gt;(llvm::Function *)</tt> to provide the
 function to retrieve analysis result for, if the function pass does not require
-any module passes. Note that this can only be done for functions for which the
+any module or immutable passes. Note that this can only be done for functions for which the
 analysis ran, e.g. in the case of dominators you should only ask for the
 DominatorTree for function definitions, not declarations.</p>