[PATCH] D21103: optimized xsgetn for better performance

[Sebastian Pop via llvm-commits]

sebpop added a comment.

In http://reviews.llvm.org/D21103#451919, @mclow.lists wrote:

> How much of a performance improvement is this?


I have seen a reduction by several billion instructions when measuring with valgrind the perf of an application that uses streams to pipe data through.


http://reviews.llvm.org/D21103