[Issue 14534] Front-end should lower all non-scalar condition expressions

via Digitalmars-d-bugs digitalmars-d-bugs at puremagic.com
Mon May 4 03:29:52 PDT 2015


https://issues.dlang.org/show_bug.cgi?id=14534

Iain Buclaw <ibuclaw at gdcproject.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ibuclaw at gdcproject.org

--- Comment #3 from Iain Buclaw <ibuclaw at gdcproject.org> ---
(In reply to yebblies from comment #2)
> The way to make this precisely defined is to put it in the spec and test
> suite, not to move the lowering into the frontend.  Lowering early is not
> without downsides.

In some cases, yes.  But in this instance, I don't think so.

After we've verified condition->toBoolean() the only other time semantic
analysis is done on the condition is for optimizations.  And I seriously doubt
that we are likely going to get any meaningful constant literal optimized out
from any of these types.

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