Subzero: Allow deeper levels of variable splitting.

src/IceOperand.cpp

Index: src/IceOperand.cpp
diff --git a/src/IceOperand.cpp b/src/IceOperand.cpp
index e6593c720da6d5e17ce44e21d2f9527c0ae2c088..540252b64785faa14f8ffecdbc8ef4689f75cea0 100644
--- a/src/IceOperand.cpp
+++ b/src/IceOperand.cpp
@@ -554,11 +554,13 @@ void Variable::dump(const Cfg *Func, Ostream &Str) const {
         hasReg() ? getBaseRegNum() : Func->getTarget()->getFrameOrStackReg();
     Str << "["
         << Func->getTarget()->getRegName(BaseRegisterNumber, IceType_i32);
-    int32_t Offset = getStackOffset();
-    if (Offset) {
-      if (Offset > 0)
-        Str << "+";
-      Str << Offset;
+    if (hasStackOffset()) {
+      int32_t Offset = getStackOffset();
+      if (Offset) {
+        if (Offset > 0)
+          Str << "+";
+        Str << Offset;
+      }
     }
     Str << "]";
   }