this regression after PR43137, also absence of pool range predicates for arm_zero_extendqisi2, arm_zero_extendqisi2_v6, arm_zero_extendhisi2, arm_zero_extendhisi2_v6 caused gcc.c-torture/compile/920928-2.c to fail with ICE by using -Os flag.
this regression after PR43137, also absence of pool range predicates for arm_zero_ extendqisi2, arm_zero_ extendqisi2_ v6, arm_zero_ extendhisi2, arm_zero_ extendhisi2_ v6 caused gcc.c-torture/ compile/ 920928- 2.c to fail with ICE by using -Os flag.