[llvm] r352130 - RegBankSelect: Fix use after free in r352123

[Matt Arsenault via llvm-commits]

Author: arsenm
Date: Thu Jan 24 15:42:01 2019
New Revision: 352130

URL: http://llvm.org/viewvc/llvm-project?rev=352130&view=rev
Log:
RegBankSelect: Fix use after free in r352123

Modified:
    llvm/trunk/lib/CodeGen/GlobalISel/RegBankSelect.cpp

Modified: llvm/trunk/lib/CodeGen/GlobalISel/RegBankSelect.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/GlobalISel/RegBankSelect.cpp?rev=352130&r1=352129&r2=352130&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/GlobalISel/RegBankSelect.cpp (original)
+++ llvm/trunk/lib/CodeGen/GlobalISel/RegBankSelect.cpp Thu Jan 24 15:42:01 2019
@@ -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());