On Monday, 23 March 2015 at 08:20:59 UTC, Kagamin wrote:
On Saturday, 21 March 2015 at 16:59:05 UTC, welkam wrote:
In C++ world always writing ++var can save some perf when
using with overloaded operators.
Do you have an example?
The compiler cannot optimize away calls to external functions
(such as operator new, as is my experience) that it cannot
inline/see fully (I may be not 100% correct here, but I'm pretty
sure it's in the right ballpark).
Here's an example, compare foo() and bar() (note the -O3):
http://goo.gl/H9tCaK
