utiliD: A library with absolutely no dependencies for bare-metal programming and bootstrapping other D libraries

Johan Engelen j at j.nl
Fri May 10 17:55:53 UTC 2019

On Friday, 10 May 2019 at 17:16:24 UTC, Mike Franklin wrote:
> On Friday, 10 May 2019 at 05:20:59 UTC, Eugene Wissner wrote:
>> - Memcmp, memcpy, memmove and memset are named equal, copy, 
>> copyBackward and fill respectively. I just wanted to create 
>> native implementations that are bit safer than their C 
>> counterparts. So they do the same job, but accept void[] 
>> instead of pointers. There are also templated functions with 
>> the same names, that work with ranges.
>> I‘m not very comfortable with GCC‘s inline asm and it doesn‘t 
>> support naked asm as DMD does, so I put asm in the .S files 
>> and compile them separately. But I‘m fine with inline asm too.

Why would you use inline assembly ? (generalizing but: extremely 
bad portability, bad performance, bad readability)

Recent discussion on LLVM mailinglist about the problem of the 
optimizer recognizing memcmp implementation and substituting it 
with a call to memcmp: 


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