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| author | Daniel Dunbar <daniel@zuster.org> | 2009-03-15 06:39:56 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2009-03-15 06:39:56 +0000 |
| commit | c8a7952dba5014d654739fdbaedc457183e441ec (patch) | |
| tree | 9ee431c09f8ff1954af03447f4f15e0a18e93d2d | |
| parent | 73f697f1f94fb59999c37a16bcf4703001ae3ebb (diff) | |
Add note on theoretical IRgen improvement.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67024 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/README.txt | 10 |
1 files changed, 10 insertions, 0 deletions
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 + +//===---------------------------------------------------------------------===// |