[PATCH] D63038: [SimplifyLibCalls] powf(x, sitofp(n)) -> powi(x, n)

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


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Comment at: test/Transforms/InstCombine/pow_fp_int.ll:176
+; CHECK-LABEL: @pow_uitofp_const_base_no_fast(
+; CHECK-NEXT:    [[SUBFP:%.*]] = uitofp i32 [[X:%.*]] to float
+; CHECK-NEXT:    [[POWI:%.*]] = tail call float @llvm.pow.f32(float 7.000000e+00, float [[SUBFP]])
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I don't think this is right; consider, for example , `pow(.999999999,4000000000)`.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D63038/new/

https://reviews.llvm.org/D63038