Subzero: Control memory growth from local label fixups.

src/IceAssemblerARM32.h

 //===- subzero/src/IceAssemblerARM32.h - Assembler for ARM32 ----*- C++ -*-===//
 //
 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Modified by the Subzero authors.
 //
 //===----------------------------------------------------------------------===//
 //
@@ skipping 142 matching lines @@
         !Func->getContext()->getFlags().getDisableHybridAssembly()) {
       constexpr SizeT InstSize = 0;
       emitTextInst(InstL->getName(Func) + ":", InstSize);
     }
     Label *L = getOrCreateLocalLabel(Number);
     if (!getPreliminary())
       this->bind(L);
   }
 
   bool fixupIsPCRel(FixupKind Kind) const override {
-    (void)Kind;
-    // TODO(kschimpf) Decide if we need this.
+    if (Kind == llvm::ELF::R_ARM_MOVW_PREL_NC)
+      return true;
+    if (Kind == llvm::ELF::R_ARM_MOVT_PREL)
+      return true;
     return false;
   }
 
   /// Accessors to keep track of the number of bytes generated inside
   /// InstARM32::emit() methods, when run inside of
   /// InstARM32::emitUsingTextFixup().
   void resetEmitTextSize() { EmitTextSize = 0; }
   void incEmitTextSize(size_t Amount) { EmitTextSize += Amount; }
   void decEmitTextSize(size_t Amount) { EmitTextSize -= Amount; }
   size_t getEmitTextSize() const { return EmitTextSize; }
@@ skipping 583 matching lines @@
 
   void emitVFPsss(CondARM32::Cond Cond, IValueT Opcode, const Operand *OpSd,
                   const Operand *OpSn, const Operand *OpSm,
                   const char *InstName);
 };
 
 } // end of namespace ARM32
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEASSEMBLERARM32_H