[PATCH] D139996: [RISCV] Disable callee-saved register when the register is written by llvm.write_register intrinsic

[Luís Marques via Phabricator via llvm-commits]

luismarques added a comment.
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In D139996#4000438 <https://reviews.llvm.org/D139996#4000438>, @zixuan-wu wrote:

> Nope, it's not enough. Before this patch, for example

Handling this at the level of `llvm.write_register` seems like attacking the symptom rather than the root cause issue.
Aren't we just missing the logic to not spill the reserved register?


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