24 Jun
2014
24 Jun
'14
12:18 p.m.
On Tue, 2014-06-24 at 10:03 +0200, Peter Zijlstra wrote:
On Tue, Jun 24, 2014 at 10:01:01AM +0530, Viresh Kumar wrote:
We don't need 'broadcast' to be set to 'zero or one', but to 'zero or non-zero' and so the extra operation to convert it to 'zero or one' can be skipped.
Also change type of 'broadcast' to unsigned int, i.e. type of drv->states[*].flags.
All true; but does it change anything? That is, does your compiler generate better code because of this?
x86_64 gcc-4.8.3 made 1 less instruction, a shift.
-Mike