On 8/6/24 1:20 AM, HAO CHEN GUI wrote:
Hi Jeff,
在 2024/8/5 23:11, Jeff Law 写道:
We'll probably need Richard S. or someone else to chime in on the actual patch,
but yea, if they can leverage stp, it's likely going to be better than actual
vectors.
Do we have a testcase for this issue or was it something you just happened to
notice?
I will refine the patch and ask for Richard's advice.
The auto CI detects the aarch64 regression cases for all submitted patches.
I received its report after sending my "clear by pieces" patch and got
following regression cases.
FAIL: gcc.target/aarch64/auto-init-padding-11.c scan-assembler stp\txzr, xzr,
FAIL: gcc.target/aarch64/auto-init-padding-5.c scan-assembler-times stp\txzr,
xzr, 2
FAIL: gcc.target/aarch64/memset-corner-cases.c check-function-bodies set0scalar
FAIL: gcc.target/aarch64/memset-q-reg.c check-function-bodies set128bitszero
FAIL: gcc.target/aarch64/memset-q-reg.c check-function-bodies set256bitszero
Then I made the patch and make sure all regression cases can be fixed.
Thanks for clarifying. Yea, we definitely want to fix this as part of
the kit then. Richard S. is the right person to start with WRT the
aarch64 patch.
Jeff
