From: Daniel Dunbar <daniel@zuster.org>
Date: Sun, 15 Mar 2009 06:39:56 +0000 (+0000)
Subject: Add note on theoretical IRgen improvement.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c8a7952dba5014d654739fdbaedc457183e441ec;p=clang

Add note on theoretical IRgen improvement.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67024 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/README.txt b/lib/CodeGen/README.txt
index e4508c7b82..f60cd03ad6 100644
--- a/lib/CodeGen/README.txt
+++ b/lib/CodeGen/README.txt
@@ -53,3 +53,13 @@ still generates a call to printf. This doesn't occur much in real
 code, but would still be nice to clean up.
 
 //===---------------------------------------------------------------------===//
+
+Deferred generation of statics incurs some additional
+overhead. Currently it is even possible to construct test cases with
+O(N^2) behavior! For at least simple cases where we can tell a global
+is used, it is probably not worth deferring it. This doesn't solve the
+O(N^2) cases, ,though...
+
+PR3810
+
+//===---------------------------------------------------------------------===//