[PATCH] D110603: [GlobalISel][IRTranslator] Emit trap intrinsic for unreachable

[Amara Emerson via Phabricator via llvm-commits]

aemerson added a comment.

Unfortunately this regresses code size (as expected) by 0.1% geomean on -Os CTMark:

  Program             outputgHVrPT outputLpdj4U diff 
   7zip-benchmark      569484       570496       0.2%
   clamscan            382376       382744       0.1%
   pairlocalalign      248908       249140       0.1%
   consumer-typeset    418972       419224       0.1%
   sqlite3             287088       287236       0.1%
   kc                  432524       432736       0.0%
   bullet              475372       475596       0.0%
   lencod              429576       429764       0.0%
   tramp3d-v4          365880       365916       0.0%
   SPASS               412852       412880       0.0%
   Geomean difference                            0.1%

We'll have to eat this and make up for it elsewhere.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D110603/new/

https://reviews.llvm.org/D110603