[SYCL] hw_emu: Syn check fail when using C-style arrays inside kernel about sycl

[j-stephan]

Follow-up: This also occurs when I try to use a condition result in a later division if one of the operands is a double. Example:

auto divisor = (condition) ? if_true : if_false;
/* ... */
auto result = dividend / divisor;

If either of dividend or divisor are a double, the compilation will fail with the Syn check fail! message. If they are both integral types the compilation will succeed.

[agozillon]

Thanks for the reports as always, I am trying to update to the most recent upstream (and internal) changes at the moment, so with any luck some of these things will be fixed. If that doesn't help we're also hoping to look into side stepping address space generation in our LLVM-IR which will fix a few of our hw_emu issues that stem from address spaces.

[agozillon]

As a follow up to my previous comment about side stepping address spaces for our FPGA, it won't be possible for a little while unfortunately as it'll take some tweaks by another team most likely and that's not likely to happen for a while.

We did move to a new address space inference method though that Intel swapped to a little while ago and pointed us towards, it seems a little more robust, still not perfect for us though.

[j-stephan]

I'm no longer able to reproduce this.