[llvm] [InstCombine] Optimize unneeded float to int cast when icmp (PR #155501)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> icmp sgt (fptosi %x), <negative> -> fcmp ogt %x, <negative>: https://alive2.llvm.org/ce/z/isTzu2

You should use `%neg = icmp slt i8 %C, 0`.


https://github.com/llvm/llvm-project/pull/155501