[llvm-commits] Enable early dup of any small bb

[Cameron Zwarich]

I tried the JavaScriptCore interpreter on x86-64. This patch gives a 2.8% speedup on SunSpider, with a huge speedup (15.7%) on the regexp interpreter that constitutes a bulk of the improvement. Hopefully, I can also try on ARM tomorrow.

It might be a good idea to check if it is failing to duplicate indirect branches without your patch. If you're interested I can tell you how to force the interpreter and where to look in the code.

Cameron