[llvm] r255909 - [ThinLTO] Metadata linking for imported functions

[Rafael Espíndola via llvm-commits]

> +  if (MDValueToValIDMap.count(MD)) {
> +    unsigned Idx = MDValueToValIDMap[MD];

Hi,

There are many cases like this where we are doing more hash lookups
than needed. In this case you can use find and compare with end().

Cheers,
Rafael