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[NFC][InstCombine] Test what happens if 'unefficient high bit check' pattern is…

Description

[NFC][InstCombine] Test what happens if 'unefficient high bit check' pattern is on both sides.

Came up in https://reviews.llvm.org/D52001#1233827
While we don't do a good job here, we at least want to make
sure that we don't have any inf-loops.

Details

Committed
lebedevriSep 13 2018, 1:33 PM
Parents
rL342170: [DCE] Add DebugCounter support
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