[PATCH] D38265: [BypassSlowDivision] Improve our handling of divisions by constants

[Sanjoy Das via Phabricator via llvm-commits]

sanjoy created this revision.
Herald added subscribers: mcrosier, jholewinski.

Don't bail out on constant divisors for divisions that can be narrowed without
introducing control flow .  This gives us a 32 bit multiply instead of an
emulated 64 bit multiply in the generated PTX assembly.


https://reviews.llvm.org/D38265

Files:
  lib/Transforms/Utils/BypassSlowDivision.cpp
  test/Transforms/CodeGenPrepare/NVPTX/bypass-slow-div.ll

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