[PATCH] D124841: [PowerPC] Stash GPR to VSR if emergency spill slot is not reachable

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

> If such an emergency spill also needs to be spilled to a location with a large offset

This shouldn't happen; the emergency spill slot should be placed in a location with a small offset from the frame/stack pointer.

If it's impossible to allocate an emergency spill slot close to the stack pointer, I think we should force a frame pointer, and the emergency spill slot should be allocated close to that.  See, for example, AArch64FrameLowering::hasFP().


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https://reviews.llvm.org/D124841