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Author SHA1 Message Date
David Green 08baa97923 [ARM] Enable tail predication for reduction tests. NFC 2020-09-14 14:26:10 +01:00
David Green 74760bb00f [LV][ARM] Add preferInloopReduction target hook. 
This allows the backend to tell the vectorizer to produce inloop
reductions through a TTI hook.

For the moment on ARM under MVE this means allowing integer add
reductions of the correct size. In the future this can include integer
min/max too, under -Os.

Differential Revision: https://reviews.llvm.org/D75512
 2020-09-12 17:47:04 +01:00
David Green 2f4c3e8097 [LV] Add additional InLoop redution tests. NFC 2020-07-18 12:14:23 +01:00