Fixed the warning introduced by r305625 to make ubuntu-gcc7.1-werror bot green.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305640 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/RegisterScavenging.cpp b/lib/CodeGen/RegisterScavenging.cpp
index b3326528807f3168a095a86500d31895dbe722b8..bffa94a80a7db783b89149dcf05e547e1afd3074 100644 (file)
--- a/lib/CodeGen/RegisterScavenging.cpp
+++ b/lib/CodeGen/RegisterScavenging.cpp
@@ -620,7 +620,7 @@ static unsigned scavengeVReg(MachineRegisterInfo &MRI, RegScavenger &RS,
     if (MO.isDef()) {
       const MachineInstr &MI = *MO.getParent();
       if (!MI.readsRegister(VReg, &TRI)) {
-        assert(!RealDef || RealDef == &MI &&
+        assert((!RealDef || RealDef == &MI) &&
                "Can have at most one definition which is not a redefinition");
         RealDef = &MI;
       }