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-rw-r--r--lib/Target/README.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index 26bc5e8319..e6178894af 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -519,3 +519,8 @@ function, they should be sunk into the ones that do.
In this case, whole-function-isel would also handle this.
//===---------------------------------------------------------------------===//
+
+Investigate lowering of sparse switch statements into perfect hash tables:
+http://burtleburtle.net/bob/hash/perfect.html
+
+//===---------------------------------------------------------------------===//