| commit | 66a3e4fafb6eae19764f8a192ca3a116c0554211 | |
| author | wanglei <wanglei@loongson.cn> | |
| Sat, 2 Dec 2023 06:25:17 +0000 (2 14:25 +0800) | ||
| committer | wanglei <wanglei@loongson.cn> | |
| Sat, 2 Dec 2023 06:25:17 +0000 (2 14:25 +0800) | ||
| tree | e14a2e66ca858d068503ee978ae3ce6b36e183d5 | treesnapshot (tar.gz zip) |
| parent | 19e068b048591feb8fa66b164669c753090dfd3a | commitdiff |
[LoongArch] Override TargetLowering::isShuffleMaskLegal
By default, `isShuffleMaskLegal` always returns true, which can result
in the expansion of `BUILD_VECTOR` into a `VECTOR_SHUFFLE` node in
certain situations. Subsequently, the `VECTOR_SHUFFLE` node is expanded
again into a `BUILD_VECTOR`, leading to an infinite loop.
To address this, we always return false, allowing the expansion of
`BUILD_VECTOR` through the stack.
By default, `isShuffleMaskLegal` always returns true, which can result
in the expansion of `BUILD_VECTOR` into a `VECTOR_SHUFFLE` node in
certain situations. Subsequently, the `VECTOR_SHUFFLE` node is expanded
again into a `BUILD_VECTOR`, leading to an infinite loop.
To address this, we always return false, allowing the expansion of
`BUILD_VECTOR` through the stack.