On 5/28/25 9:05 PM, Jiawei wrote:
This seems like it would be much better as a combine pattern. In
fact, I'm a bit surprised that combine didn't simplify this series of
operations into a IOR. So I'd really like to see the .combine dump
with and without this hunk for the relevant testcas
在 2025/5/29 0:13, Jeff Law 写道:
On 5/28/25 4:23 AM, Jiawei wrote:
This patch adds a peephole2 optimization that combines a 'bclr'
followed by
a 'binv' into a single 'bset' instruction when the Zbs extension is
enabled.
The motivation for this patch is that PR116398 limits 2→2 RTL
combinat
On 5/28/25 4:23 AM, Jiawei wrote:
This patch adds a peephole2 optimization that combines a 'bclr' followed by
a 'binv' into a single 'bset' instruction when the Zbs extension is enabled.
The motivation for this patch is that PR116398 limits 2→2 RTL combinations,
which prevents certain simplif
This patch adds a peephole2 optimization that combines a 'bclr' followed by
a 'binv' into a single 'bset' instruction when the Zbs extension is enabled.
The motivation for this patch is that PR116398 limits 2→2 RTL combinations,
which prevents certain simplifications in the combiner pass. As a res
