Revert "Introduce InvokeMathCFunction that can be used to directly invoke mathematical function pro…

runtime/vm/locations.h

Index: runtime/vm/locations.h
diff --git a/runtime/vm/locations.h b/runtime/vm/locations.h
index f8b7f6c471dcb8746b5f6574529ce0a6e8e58113..fcd9c810c607708d3f4a25bb8be604f667916361 100644
--- a/runtime/vm/locations.h
+++ b/runtime/vm/locations.h
@@ -418,7 +418,7 @@ class LocationSummary : public ZoneAllocated {
   }
 
   void set_in(intptr_t index, Location loc) {
-    ASSERT(!always_calls() || loc.IsMachineRegister());
+    ASSERT(!always_calls() || loc.IsRegister());
     input_locations_[index] = loc;
   }
 
@@ -453,7 +453,7 @@ class LocationSummary : public ZoneAllocated {
   }
 
   void set_out(Location loc) {
-    ASSERT(!always_calls() || (loc.IsMachineRegister() || loc.IsInvalid()));
+    ASSERT(!always_calls() || (loc.IsRegister() || loc.IsInvalid()));
     output_location_ = loc;
   }