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[ValueTracking] Add more known non zero tests (NFC)

Authored by nikic on Dec 26 2020, 6:31 AM.

Description

[ValueTracking] Add more known non zero tests (NFC)

Add tests for non-trivial conditions that imply non-zero on the
false branch rather than the true branch.

The last case already folds due to canonicalization.

Details

Committed
nikicDec 26 2020, 6:48 AM
Parents
rG622ea9cf74bc: [RISCV] Define vector widening reduction intrinsic.
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