2014-02-18 0:48 GMT+09:00 Dicebot <pub...@dicebot.lv>:
> On Monday, 17 February 2014 at 14:51:20 UTC, Kenji Hara wrote:
>
>> If a function is only used for CTFE, compiler can elide its codegen. It's
>> in the scope of optimization.
>>
>
> It can't know for sure it without some sort of WPO / LTO - and those won't
> happen any time soon. I propose a simple workaround that can be done right
> now (it can be optional compiler-specific addition)
>
In some case it would be possible without WPO/LTO:
- Immediately called lambdas
enum x = (){ return some_sort_ctfe_calculartions; }; // lambda codegen
is unnecessary.
- modue private functions
module a;
private string foo() { ... }
enum x = foo();
// Compiler can elide codegen for 'foo', if other declarations
// in module a don't use it for runtime code.
Kenji Hara
