Issue 5689

[Daniel Murphy]

"James Miller" <james at aatch.net> wrote in message 
news:mailman.707.1331841671.4860.digitalmars-d at puremagic.com...
> Out of curiosity, what does -profile do that could cause this bug?
> Seems like an odd cause, since in my specific case, I don't even get
> an error, just crazy values, -2^31 to ~10^38, in later calculations
>
> --
> James Miller

IIRC the code that actually does -profile is in the backend, and is done 
with very low-level calls.  Inserting calls can change the register usage 
patterns, interfere with cse elimination, etc.  I assume this is what is 
happening, and with x64 and doubles that mean xmm codegen, which is still 
relatively new and buggy.

Could you post the disassembly? (with intel syntax please)

It might be possible to work around it by changing the calling convention of 
uniform and/or the functions it calls.