From d9bf79f4e9952acca1fa353e39bcee89cd69550f Mon Sep 17 00:00:00 2001
From: Hideto Ueno <uenoku.tokotoko@gmail.com>
Date: Thu, 12 Mar 2020 15:25:24 +0000
Subject: [PATCH] [Attributor][FIX] Add a missing dependence track in noalias
 deduction

---
 llvm/lib/Transforms/IPO/Attributor.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/lib/Transforms/IPO/Attributor.cpp b/llvm/lib/Transforms/IPO/Attributor.cpp
index d0bd1cc6692c..0cecfd4461d4 100644
--- a/llvm/lib/Transforms/IPO/Attributor.cpp
+++ b/llvm/lib/Transforms/IPO/Attributor.cpp
@@ -2812,6 +2812,8 @@ struct AANoAliasCallSiteArgument final : AANoAliasImpl {
       return false;
     }
 
+    A.recordDependence(NoAliasAA, *this, DepClassTy::OPTIONAL);
+
     const IRPosition &VIRP = IRPosition::value(getAssociatedValue());
     auto &NoCaptureAA =
         A.getAAFor<AANoCapture>(*this, VIRP, /* TrackDependence */ false);