Roman Lebedev 94ead0190f [InstCombine] Improve vector undef handling for sext(ashr(shl(trunc()))) fold, 2 ...

If the shift amount was undef for some lane, the shift amount in opposite
shift is irrelevant for that lane, and the new shift amount for that lane
can be undef.

2020-12-01 16:54:00 +03:00

111 KiB

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