3e08a4ecea
I was looking at a regression on the bfin port with a recent change to the IRA and stumbled across this just doing a general port healthyness evaluation. The ABS instruction in the blackfin ISA is defined as saturating on INT_MIN, which is a bit unexpected. We certainly can't use it when -fwrapv is enabled. Given the failures on the C23 uabs tests, I'm inclined to just disable the pattern completely. Fixes pr23047, uabs-2 and uabs-3. While it's not a regression, it's the blackfin port, so I think we've got a higher degree of freedom here. Pushing to the trunk. gcc/ * config/bfin/bfin.md (abssi): Disable pattern. |
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