Most CPUID routines return constant data, there are four that don't.
Some CPUID functions also need the leaf descriptor, so we need to
describe that as well.
Functions that don't return constant data:
- function 1Ah - Returns different data depending on current CPU core
- function 8000_000{2,3,4} - Different data based on CPU core
Functions that need leaf constprop:
- 4h, 7h, Dh, 4000_0001h, 8000_001Dh
Ryan Houdek
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