From: Matt Arsenault <Matthew.Arsenault@amd.com>
Date: Thu, 24 Jan 2019 23:42:01 +0000 (+0000)
Subject: RegBankSelect: Fix use after free in r352123
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e6b5e1fb3457be1c9550b7702075d81fce140032;p=llvm

RegBankSelect: Fix use after free in r352123

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@352130 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/GlobalISel/RegBankSelect.cpp b/lib/CodeGen/GlobalISel/RegBankSelect.cpp
index 25a979cd332..c4cd1a398dd 100644
--- a/lib/CodeGen/GlobalISel/RegBankSelect.cpp
+++ b/lib/CodeGen/GlobalISel/RegBankSelect.cpp
@@ -185,7 +185,7 @@ bool RegBankSelect::repairReg(
       unsigned MergeOp = RegTy.isScalar() ?
         TargetOpcode::G_MERGE_VALUES : TargetOpcode::G_BUILD_VECTOR;
 
-      auto &MergeBuilder =
+      auto MergeBuilder =
         MIRBuilder.buildInstrNoInsert(MergeOp)
         .addDef(MO.getReg());