Add workaround to allow testing of ARM integrated assembler.

src/IceInstARM32.h

Index: src/IceInstARM32.h
diff --git a/src/IceInstARM32.h b/src/IceInstARM32.h
index 28317d270f13cff97b6dd338fe31fe0855d48c4b..cf3ad897006f40e92f7ed73c1f28efa0b7e84724 100644
--- a/src/IceInstARM32.h
+++ b/src/IceInstARM32.h
@@ -334,6 +334,10 @@ public:
     Vsub
   };
 
+  bool isIasSafe(InstKind Kind) const {
+    return !BuildDefs::checkIasmSafe() || isIasSafeImpl(Kind);
+  }
+
   static const char *getWidthString(Type Ty);
   static const char *getVecWidthString(Type Ty);
   static CondARM32::Cond getOppositeCondition(CondARM32::Cond Cond);
@@ -354,6 +358,10 @@ protected:
     return Inst->getKind() == static_cast<InstKind>(MyKind);
   }
 
+  // Returns true if ARM instruction of Kind is in safe list for
+  // the integrated assembler.
+  bool isIasSafeImpl(InstKind Kind) const;
+
   // Generates text of assembly instruction using method emit(), and then adds
   // to the assembly buffer as a Fixup.
   void emitUsingTextFixup(const Cfg *Func) const;