Hey Loïc, the change is currently in Sid (one change back in the
changelog).

Agreed that this is potentially a major change, but it's also how the
software is intended to work. Without it, Intel is noting random crashes
in popular applications like Pytorch, a problem which has been worse on
Meteor Lake. If we're looking for potential risks, we already see that
using a different translator than expected can cause random crashes.
Perhaps there are some users who have stable code with the current
translator who will find a bug when we switch it. However, if that is
the case, we would have a bug with Intel's supported configuration
rather than our current situation where we would have to address bugs
knowing that our configuration is unsupported by the developers
themselves.

As for tests, we can use this command on MTL to demonstrate an issue that is 
solved by this change:
"ocloc -device mtl -spirv_input -file ./a.spv"

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https://bugs.launchpad.net/bugs/2085370

Title:
  Important build flag left out of IGC build

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