[PATCH] D100109: [RegisterScavenging] Add asserts for better errors

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/CodeGen/RegisterScavenging.cpp:430
     }
+    assert(I != MBB.begin() && "Did not find target instruction while "
+                               "iterating backwards");
----------------
What if you did intend to scavenge at the beginning? Also seems weird to assert here when there's a break on begin above


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100109/new/

https://reviews.llvm.org/D100109