[Bug 92100] [ILK] GPU hang (and multiple fails) in piglit shader tests if spilling is forced in the vec4 backend

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92100

Iago Toral <itoral at igalia.com> changed:

           What    |Removed                     |Added
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 Attachment #118430|0                           |1
        is obsolete|                            |

--- Comment #4 from Iago Toral <itoral at igalia.com> ---
Created attachment 118702
  --> https://bugs.freedesktop.org/attachment.cgi?id=118702&action=edit
Minimal native code reproducing the problem

This is the native code for the minimal example I just attached, forcing
spilling only for the the variable "sum". Since that variable is not part of
the loop condition the program won't hang, but we still get an incorrect result
(sum is 0). Notice that in this case the problem is limited to just one
spill/unspill operation that does not work well for some reason.

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