David Green e16cc8ed46
[AArch64] Guard for 128bit vectors in mull combine. (#169839)
The test case generates a extract_subvector(index) leading into a mul.
Make sure we don't try and treat the scalable vector extract as a 128bit
vector in the mull combine.

Fixes #168912
2025-11-28 12:06:17 +00:00
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