[PATCH] D35635: [ARM] Optimize {s,u}{add,sub}.with.overflow

Joel Galenson via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Dec 8 10:08:22 PST 2017


jgalenson updated this revision to Diff 126175.
jgalenson added a comment.

I've removed the modification to getARMXALUOOp that uses ADDC instead of ADD.  From the discussion, it's not clear exactly how that part should work, and it's no longer needed, so this makes things simpler.


https://reviews.llvm.org/D35635

Files:
  lib/Target/ARM/ARMISelLowering.cpp
  lib/Target/ARM/ARMISelLowering.h
  test/CodeGen/ARM/su-addsub-overflow.ll

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