Sanjay Patel c3f50ff92e [InstCombine] Without infinites, fold (C / X) < 0.0 --> (X < 0)
When C is not zero and infinites are not allowed (C / X) > 0 is a sign
test. Depending on the sign of C, the predicate must be swapped.

E.g.:
  foo(double X) {
    if ((-2.0 / X) <= 0) ...
  }
 =>
  foo(double X) {
    if (X >= 0) ...
  }

Patch by: @marels (Martin Elshuber)

Differential Revision: https://reviews.llvm.org/D51942

llvm-svn: 343228
2018-09-27 15:59:24 +00:00
..
2018-09-04 17:19:13 +00:00