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-rw-r--r--lib/CodeGen/README.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/README.txt b/lib/CodeGen/README.txt
index 33e207ff8c..f7975fea6d 100644
--- a/lib/CodeGen/README.txt
+++ b/lib/CodeGen/README.txt
@@ -199,3 +199,5 @@ effects). Once this is in place, it would be even better to have tblgen
synthesize the various copy insertion/inspection methods in TargetInstrInfo.
//===---------------------------------------------------------------------===//
+
+Avoid issuing copies of TargetInstrInfo::implicit_def.