Alex MacLean 369d8148e0
[ValueTracking] use KnownBits to compute fpclass from bitcast (#97762)
When we encounter a bitcast from an integer type we can use the
information from `KnownBits` to glean some information about the
fpclass:
- If the sign bit is known, we can transfer this information over. 
- If the float is IEEE format and enough of the bits are known, we may
  be able to prove or rule out some fpclasses such as NaN, Zero, or Inf.
2024-08-30 07:34:49 -07:00
..
2024-08-28 14:01:21 +04:00