[Bug target/95076] New: Failure to optimize out stack alignment on function call of different type

[gabravier at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95076

            Bug ID: 95076
           Summary: Failure to optimize out stack alignment on function
                    call of different type
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gabravier at gmail dot com
  Target Milestone: ---

long long f();

int g()
{
    return f();
}

With -O3, LLVM outputs :

g(): # @g()
  jmp f() # TAILCALL

GCC outputs : 

g():
  sub rsp, 8
  call f()
  add rsp, 8
  ret