From dbea84db1f3ec7c068897a497f8d0a8ff39856a4 Mon Sep 17 00:00:00 2001
From: Richard Wei <rxwei@google.com>
Date: Fri, 19 Apr 2019 12:40:06 -0700
Subject: [PATCH] Fix a memory leak in pullback reabstraction thunks.

---
 lib/SILOptimizer/Mandatory/Differentiation.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/SILOptimizer/Mandatory/Differentiation.cpp b/lib/SILOptimizer/Mandatory/Differentiation.cpp
index 7f83228f1c51a..2499810cc683b 100644
--- a/lib/SILOptimizer/Mandatory/Differentiation.cpp
+++ b/lib/SILOptimizer/Mandatory/Differentiation.cpp
@@ -2293,7 +2293,6 @@ static SILFunction *getOrCreateReabstractionThunk(SILOptFunctionBuilder &fb,
       auto indRes = *fromIndResultsIter++;
       auto *load = builder.createLoad(loc, indRes,
           getBufferLOQ(indRes->getType().getASTType(), *thunk));
-      builder.createRetainValue(loc, load, builder.getDefaultAtomicity());
       results.push_back(load);
       continue;
     }