[PATCH] D139673: [AMDGPU][SIFrameLowering] Mark VGPR used for AGPR spills as reserved

[Jeffrey Byrnes via Phabricator via llvm-commits]

jrbyrnes added a comment.

Extension of this work is to replace MRI.freezeReservedRegisters() with MRI.reserveReg() where applicable, and remove the register use tracking logic in allocateVGPRSpillToAGPR (OtherUsedRegs).


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https://reviews.llvm.org/D139673