On Wednesday, 3 September 2014 at 21:00:13 UTC, deadalnix wrote:
On Wednesday, 3 September 2014 at 06:37:15 UTC, Iain Buclaw via
Digitalmars-d wrote:
For the time being, they are as expensive as virtual calls.
Iain.
WUT ???
How come ? The address of the call is know at compile time, the
optimizer should see through this, no ?
Iain is selling his compiler short again. ;)
---
int foo(int[] a) @safe {
if (a.length == 0) return -1;
return (() @trusted => a.ptr[0])();
}
---
compiles to exactly what you would expect when optimizations are
enabled with both GDC and LDC.
However, as long as DMD can't handle this idiom, there will be
push-back regarding use in Phobos. Additionally, we should think
about always inlining such literals even on -O0.
Cheers,
David
