On 26/10/2020 11:06, Alex Coplan via Gcc-patches wrote: > Well, only the low 32 bits of the subreg are valid. But because those > low 32 bits are shifted left 2 times, the low 34 bits of the ashift are > valid: the bottom 2 bits of the ashift are zeros, and the 32 bits above > those are from the inner SImode reg (with the upper 62 bits being > undefined).
s/upper 62 bits/upper 30 bits/
