On 10/4/22 05:28, Stefan Schulze Frielinghaus via Gcc-patches wrote:
For BImode get_narrowest_mode evaluates to QImode but BImode < QImode.
Thus FOR_EACH_MODE_UNTIL never reaches BImode and iterates until OImode
for which no wider mode exists so we end up with VOIDmode and fail.
Fixed by adding a size guard so we effectively skip BImode.
Bootstrap and regtest are currently running on x64. Assuming they pass
ok for mainline?
gcc/ChangeLog:
PR rtl-optimization/107088
* cselib.cc (new_cselib_val): Skip BImode while keeping track of
subvalue relations.
OK. And FWIW, this fixes the various failures I saw in my tester due to
the cselib patches.
jeff
