Rin Dobrescu
7f292b8fb1
[AArch64] Convert concat(uhadd(a,b), uhadd(c,d)) to uhadd(concat(a,c), concat(b,d)) ( #80674 )
...
We can convert concat(v4i16 uhadd(a,b), v4i16 uhadd(c,d)) to v8i16
uhadd(concat(a,c), concat(b,d)), which can lead to further
simplifications.
2024-02-06 11:02:06 +00:00
Rin Dobrescu
2907c63311
Revert "[AArch64] Convert concat(uhadd(a,b), uhadd(c,d)) to uhadd(concat(a,c), concat(b,d))" ( #80157 )
...
Reverts llvm/llvm-project#79464 while figuring out why the tests are
failing.
2024-01-31 16:45:25 +00:00
Rin Dobrescu
cf828aee24
[AArch64] Convert concat(uhadd(a,b), uhadd(c,d)) to uhadd(concat(a,c), concat(b,d)) ( #79464 )
...
We can convert concat(v4i16 uhadd(a,b), v4i16 uhadd(c,d)) to v8i16
uhadd(concat(a,c), concat(b,d)), which can lead to further
simplifications.
2024-01-31 12:52:12 +00:00
Rin Dobrescu
365aa1574a
[AArch64] Convert UADDV(add(zext, zext)) into UADDLV(concat). ( #78301 )
...
We can convert a UADDV(add(zext(64-bit source), zext(64-bit source)))
into UADDLV(concat), where the concat represents the 64-bit zext
sources.
2024-01-22 11:59:40 +00:00
Rin
0894c2ee5f
[DAGCombiner] Avoid the pre-truncate of BUILD_VECTOR sources. ( #75792 )
...
Avoid the pre-truncate of BUILD_VECTOR sources when there is more than
one use. This can avoid using unnecessary movs later down the
instruction selection pipeline.
2023-12-19 15:25:38 +00:00
