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

[Bob Wilson]

On Jun 15, 2011, at 11:31 PM, Cameron Zwarich wrote:

> 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.

OK then!  A 15.7% win is pretty compelling.

Whenever I get around to improve the indirect branch dup, maybe I'll see if I can refactor the PHI-updating code from taildup to share it between the passes and perhaps allows its use elsewhere.