Handle MOV (immediate) and MOVT to load ARM global addresses.

src/IceInstARM32.h

Index: src/IceInstARM32.h
diff --git a/src/IceInstARM32.h b/src/IceInstARM32.h
index 0b11e77b192cea104167d72a2b552d395ca331dc..042072211be1aadd79dd7f3d77289164a8b6162a 100644
--- a/src/IceInstARM32.h
+++ b/src/IceInstARM32.h
@@ -418,6 +418,7 @@ public:
       return;
     emitUnaryopGPR(Opcode, this, Func, NeedsWidthSuffix);
   }
+  void emitIAS(const Cfg *Func) const override;
   void dump(const Cfg *Func) const override {
     if (!BuildDefs::dump())
       return;