[PATCH] D112675: [Instcombine] Add patterns to generate fneg(fabs(x)) instead of fcmp/sub/selects (part 1)

[Usman Nadeem via Phabricator via llvm-commits]

mnadeem added inline comments.


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Comment at: llvm/test/Transforms/InstCombine/fneg-fabs.ll:28
 ;
   %cmp = fcmp ult double %x, 0.000000e+00
   %negX = fsub double 0.000000e+00, %x
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arsenm wrote:
> Missing some cases where the compared value is -0?
Any specific cases? Or should I duplicate all tests and set the compared value as `-0`?


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  https://reviews.llvm.org/D112675/new/

https://reviews.llvm.org/D112675