| commit | 0959bb30016f439e8f9e975e770c49b2eb0dd129 | [log] [tgz] |
|---|---|---|
| author | David Green <david.green@arm.com> | Mon Dec 08 19:35:32 2025 +0000 |
| committer | GitHub <noreply@github.com> | Mon Dec 08 19:35:32 2025 +0000 |
| tree | 5c5124a127b0458d013486010298099da17c5642 | |
| parent | 7be3973a27e7ff231135687c8705e84a19987aab [diff] |
[DAG] Generate UMULH/SMULH with wider vector types (#170283) The existing code for generating umulh/smulh was checking that that the getTypeToTransformTo was a LegalOrCustom operation. This only takes a single legalization step though, so if v4i32 was legal, a v8i32 would be transformed but a v16i32 would not. This patch introduces a getLegalTypeToTransformTo that performs getTypeToTransformTo until a legal type is reached. The umulh/smulh code can then use it to check if the final resultant type will be legal.
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