[satyapr93]

Been there, done that. I was comparing clang and GCC. Clang had dead coffee elimination but not GCC. I was surprised by seeing the speedup by using clang :P

[userbinator]

"dead coffee elimination" sounds more like something for Java code. ;-)

[carlob]

Or maybe OP was just thinking: "God I really need to wake up, let's make some coffee" while typing.

[fourthark]

Coffee in, coffee out.

[scott_s]

I downvoted you for the phrase "been there, done that". That sort of sentiment - I already know about this thing, so it's not worthwhile - is discouraged here. Plenty of people may not know about it; it may not have value to you, but it may have value to them. If it's something you're familiar with, you can always add to the discussion.

[jeorgun]

That seems pretty harsh. From context, 'been there, done that' sounds to me like sympathizing with the article's author, not dismissing them.