[PATCH] D40863: [AArch64][Darwin] Implement stack probing for static and dynamic stack objects

[Martin Storsjö via Phabricator via llvm-commits]

mstorsjo added inline comments.


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Comment at: lib/Target/AArch64/AArch64FrameLowering.cpp:478
+  if (!LRIsSaved) {
+    // LR wasn't saved as a CSR, so we need to save it ourselves. We don't
+    // bother updating SP, as we know the probe function won't modify any
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Instead of manually saving LR here if it wasn't already saved, in D41131 I instead tried to estimate whether the stack probe would end up being necessary in determineCalleeSaves, and made sure LR is saved already there if a stack probe will be necessary.


Repository:
  rL LLVM

https://reviews.llvm.org/D40863