Index: lib/Transforms/Scalar/ConstantHoisting.cpp
===================================================================
--- lib/Transforms/Scalar/ConstantHoisting.cpp
+++ lib/Transforms/Scalar/ConstantHoisting.cpp
@@ -947,6 +947,8 @@
   // Cleanup dead instructions.
   deleteDeadCastInst();
 
+  releaseMemory();
+
   return MadeChange;
 }
 
Index: test/Transforms/ConstantHoisting/X86/phi.ll
===================================================================
--- test/Transforms/ConstantHoisting/X86/phi.ll
+++ test/Transforms/ConstantHoisting/X86/phi.ll
@@ -1,4 +1,5 @@
 ; RUN: opt -S -consthoist < %s | FileCheck %s
+; RUN: opt -S -passes=consthoist < %s | FileCheck %s
 
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.9.0"