[llvm-bugs] [Bug 24818] hoisting expensive ops like FP division is bad for perf

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=24818

Sanjay Patel <spatel+llvm at rotateright.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #9 from Sanjay Patel <spatel+llvm at rotateright.com> ---
Should be fixed with:
http://reviews.llvm.org/D15213
http://reviews.llvm.org/rL255660

We still need to adjust some target-specific instruction costs. For example,
sqrt is considered cheap for x86, and fdiv is considered expensive for GPUs.

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