  We study topological phase transitions in three-dimensional odd-parity or
noncentrosymmetric superconductors with mirror symmetry when time-reversal
symmetry is broken. We construct a generic phase diagram for Weyl
superconductivity in the mirror-symmetric superconductors. It is shown that
Weyl superconductivity generally emerges between the trivial and the
topological crystalline superconductor phases. We demonstrate how a trajectory
of the Weyl nodes determines the change in mirror Chern numbers in the
topological phase transition. We also discuss a relationship between
particle-hole symmetry and the trajectory of the Weyl nodes which realizes the
topological crystalline superconductor phase.
