On 13.08.2012 14:32, Bernd Schmidt wrote:
This is a small patch for sched-rgn that attempts to save DFA state at the end of a basic block and re-use it in successor blocks. This was a customer-requested optimization; I've not seen it make much of a difference in any macro benchmarks.
FWIW, this was definitely helpful for sel-sched on ia64, as far as I recall, and likewise on some of the smaller tests.
Andrey
Bootstrapped and tested on x86_64-linux and also tested on c6x-elf. OK? Bernd
