Subzero: Allow deeper levels of variable splitting.

src/IceOperand.cpp

 //===- subzero/src/IceOperand.cpp - High-level operand implementation -----===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 536 matching lines @@
     if (Func->isVerbose(IceV_RegOrigins))
       Str << ":";
     Str << Func->getTarget()->getRegName(RegNum, getType());
   } else if (Func->getTarget()->hasComputedFrame()) {
     if (Func->isVerbose(IceV_RegOrigins))
       Str << ":";
     const auto BaseRegisterNumber =
         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 << "]";
   }
 }
 
 template <> void ConstantInteger32::emit(TargetLowering *Target) const {
   Target->emit(this);
 }
 
 template <> void ConstantInteger64::emit(TargetLowering *Target) const {
@@ skipping 75 matching lines @@
   if (getType() != IceType_i32 && getType() != IceType_i16 &&
       getType() != IceType_i8)
     return false;
   // The Following checks if the signed representation of Value is between
   // -Threshold/2 and +Threshold/2
   bool largerThanThreshold = Threshold / 2 + Value >= Threshold;
   return largerThanThreshold;
 }
 
 } // end of namespace Ice