| Issue |
143099
|
| Summary |
[X86][GISel] Add legalization support for non-constant G_BUILD_VECTOR
|
| Labels |
backend:X86,
llvm:globalisel
|
| Assignees |
|
| Reporter |
RKSimon
|
X86LegalizerInfo::legalizeBuildVector currently only handles constant build vectors.
If we can add initial support for non-constant values - even just as an UNPCK chain - we have a fallback for many vector opcodes (G_CONCAT_VECTORS / G_SHUFFLE_VECTOR / G_INSERT_SUBVECTOR / G_EXTRACT_SUBVECTOR etc.).
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