On 11/6/23 20:30, juzhe.zh...@rivai.ai wrote:
 >> So will this create a FAIL if someone runs the testsuite with the
autovec preference set to scalable?
No, it won't. Since it is always -fno-vect-cost-model.
When a scalable vector doesn't have 256bit vector,  it always XFAIL, for example, ARM SVE.

Or are the fallbacks to VLS still
available when we prefer scalable vectors?
Yes. since it is -fno-vect-cost-model.
OK.  Thanks for clarifying.  This is fine for the trunk.
jeff

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