Inherent code performance advantages of D over C?

[Max Samukha]

On Thursday, 12 December 2013 at 20:24:19 UTC, Walter Bright 
wrote:
> On 12/12/2013 12:16 PM, Max Samukha wrote:
>> But the question is what to do about other targets? What about 
>> ARM, MIL, LLVM IR
>> or whatever low-level target a D compiler may compile too? 
>> Will those be
>> standardized as part of the language?
>
> I certainly think they ought to be.

Don't you find it somewhat alarming that both alternative 
compilers follow neither the standard inline asm nor ABI? Maybe 
it would be wiser to call those standard extentions or whatever 
than claiming they are part of the language?