在 2025/6/10 7:20, Jeff Law 写道:
On 6/5/25 6:25 AM, Jiawei wrote:
Thanks for your suggestions, I found that the ior is successful
generated in combine pass without using the zbs extension, and in
other architecture it also work fine.
Yea, it's probably an artifact of how we need to represe
On 6/5/25 6:25 AM, Jiawei wrote:
Thanks for your suggestions, I found that the ior is successful
generated in combine pass without using the zbs extension, and in other
architecture it also work fine.
Yea, it's probably an artifact of how we need to represent the single
bit clear. It's r
在 2025/5/30 1:46, Jeff Law 写道:
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 thi
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
