Fix use of uninitialized value added in r189400 (found by MemorySanitizer)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189456 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.cpp b/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.cpp
index 633cd362dc3e3101c2d240621e3341558e5ae080..d7e84021595ea0c078d9230e756767f304b9095e 100644 (file)
--- a/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.cpp
+++ b/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.cpp
@@ -54,7 +54,7 @@ PPCMCExpr::EvaluateAsRelocatableImpl(MCValue &Res,
                                      const MCAsmLayout *Layout) const {
   MCValue Value;
 
-  if (Layout && !getSubExpr()->EvaluateAsRelocatable(Value, *Layout))
+  if (!Layout || !getSubExpr()->EvaluateAsRelocatable(Value, *Layout))
     return false;
 
   if (Value.isAbsolute()) {
@@ -85,7 +85,7 @@ PPCMCExpr::EvaluateAsRelocatableImpl(MCValue &Res,
         break;
     }
     Res = MCValue::get(Result);
-  } else if (Layout) {
+  } else {
     MCContext &Context = Layout->getAssembler().getContext();
     const MCSymbolRefExpr *Sym = Value.getSymA();
     MCSymbolRefExpr::VariantKind Modifier = Sym->getKind();
@@ -118,8 +118,7 @@ PPCMCExpr::EvaluateAsRelocatableImpl(MCValue &Res,
     }
     Sym = MCSymbolRefExpr::Create(&Sym->getSymbol(), Modifier, Context);
     Res = MCValue::get(Sym, Value.getSymB(), Value.getConstant());
-  } else
-    return false;
+  }
 
   return true;
 }