[PATCH] D35579: [SimplifyCFG] Generate lookup tables based on a function attribute

[Sumanth Gundapaneni via Phabricator via llvm-commits]

sgundapa added a comment.

> It looks like TargetTransformInfo already has a hook, shouldBuildLookupTables(), for disabling this optimization. Why not just set that to false for Hexagon?

TCM is often small and you don't want to either enable or disable the table generation for a specific backend.  As of today, 
hexagon-emit-lookup-tables llvm flag control the generation of lookup tables for hexagon backend. 
The real problem here is , I do not want the user to use a combination of front end and backend flags to get the desired result.


https://reviews.llvm.org/D35579