[Bug target/101205] New: csinv does not have an zero_extend version

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101205

            Bug ID: 101205
           Summary: csinv does not have an zero_extend version
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64

While improving phi-opt I ran into this issue.
gcc.target/aarch64/csinv-neg.c started to fail because we move the cast out of
the conditional and such.
Here is a testcase which shows the problem even without improvment of phiopt:
unsigned long long
inv1(unsigned a, unsigned b, unsigned c)
{
  unsigned t = a ? b : ~c;
  return t;
}