[PATCH] D69936: [IPRA][ARM] Spill extra registers at -Oz

[Oliver Stannard (Linaro) via Phabricator via llvm-commits]

ostannard added a comment.

Currently, IPRA does trigger on invokes, but only marks registers as preserved on the non-exceptional path. The live-ins of the landing pad block aren't changed, so the compiler won't try to rely on the values of r0-r3 there. I'll add some tests for this. This patch emits correct unwind info (already tested), so unwinding through these functions shouldn't cause any problems.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D69936/new/

https://reviews.llvm.org/D69936