Fix stack height assertion code and free up a bit in the Function tag bits.

runtime/vm/intermediate_language_arm.cc

Index: runtime/vm/intermediate_language_arm.cc
===================================================================
--- runtime/vm/intermediate_language_arm.cc	(revision 32017)
+++ runtime/vm/intermediate_language_arm.cc	(working copy)
@@ -80,22 +80,16 @@
   Register result = locs()->in(0).reg();
   ASSERT(result == R0);
 #if defined(DEBUG)
-  // TODO(srdjan): Fix for functions with finally clause.
-  // A finally clause may leave a previously pushed return value if it
-  // has its own return instruction. Method that have finally are currently
-  // not optimized.
-  if (!compiler->HasFinally()) {
-    Label stack_ok;
-    __ Comment("Stack Check");
-    const intptr_t fp_sp_dist =
-        (kFirstLocalSlotFromFp + 1 - compiler->StackSize()) * kWordSize;
-    ASSERT(fp_sp_dist <= 0);
-    __ sub(R2, SP, ShifterOperand(FP));
-    __ CompareImmediate(R2, fp_sp_dist);
-    __ b(&stack_ok, EQ);
-    __ bkpt(0);
-    __ Bind(&stack_ok);
-  }
+  Label stack_ok;
+  __ Comment("Stack Check");
+  const intptr_t fp_sp_dist =
+      (kFirstLocalSlotFromFp + 1 - compiler->StackSize()) * kWordSize;
+  ASSERT(fp_sp_dist <= 0);
+  __ sub(R2, SP, ShifterOperand(FP));
+  __ CompareImmediate(R2, fp_sp_dist);
+  __ b(&stack_ok, EQ);
+  __ bkpt(0);
+  __ Bind(&stack_ok);
 #endif
   __ LeaveDartFrame();
   __ Ret();