[llvm] r360328 - [CodeGenPrepare] Ensure we get a non-null result from getTrueOrFalseValue. NFCI.

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Thu May  9 03:51:26 2019
New Revision: 360328

URL: http://llvm.org/viewvc/llvm-project?rev=360328&view=rev
Log:
[CodeGenPrepare] Ensure we get a non-null result from getTrueOrFalseValue. NFCI.

Modified:
    llvm/trunk/lib/CodeGen/CodeGenPrepare.cpp

Modified: llvm/trunk/lib/CodeGen/CodeGenPrepare.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/CodeGenPrepare.cpp?rev=360328&r1=360327&r2=360328&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/CodeGenPrepare.cpp (original)
+++ llvm/trunk/lib/CodeGen/CodeGenPrepare.cpp Thu May  9 03:51:26 2019
@@ -5904,7 +5904,7 @@ static bool isFormingBranchFromSelectPro
 static Value *getTrueOrFalseValue(
     SelectInst *SI, bool isTrue,
     const SmallPtrSet<const Instruction *, 2> &Selects) {
-  Value *V;
+  Value *V = nullptr;
 
   for (SelectInst *DefSI = SI; DefSI != nullptr && Selects.count(DefSI);
        DefSI = dyn_cast<SelectInst>(V)) {
@@ -5912,6 +5912,8 @@ static Value *getTrueOrFalseValue(
            "The condition of DefSI does not match with SI");
     V = (isTrue ? DefSI->getTrueValue() : DefSI->getFalseValue());
   }
+
+  assert(V && "Failed to get select true/false value");
   return V;
 }