On 3/12/2021 10:54 AM, Stefan Schulze Frielinghaus via Gcc-patches wrote:
In addition to the existing check also ask the target whether a
replacement register may be accessed in a different mode than it was set
before.
Bootstrapped and regtested on IBM Z. Ok for mainline?
gcc/ChangeLog:
* regcprop.c (find_oldest_value_reg): Ask target whether
different mode is fine for replacement register.
OK jeff
