Stanislav Mekhanoshin e5340ed30c [AMDGPU] Fix global isel for kernels using agprs on gfx90a ...

With Global ISel getReservedRegs() is called before function is
regbank selected for the first time. Defer caching of usesAGPRs()
in this case.

Differential Revision: https://reviews.llvm.org/D112644

2021-10-29 14:23:14 -07:00

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