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1062294
2017 Mar 17
2
LoopVectorizer with ifconversion
Hi,
it seems to be generally a bad idea to enable vectorization of
conditional stores on SystemZ, because it will cost extra instructions
both to 1. extract compare result element 2. Do a test-under-mask
instruction on that element 3. conditional branch past the store block.
Ideally, I would like to adjust the cost for the vector compare. I am
not sure if this is feasable since I would need