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Commit 912404db authored by Kazu Hirata's avatar Kazu Hirata
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[ControlHeightReduction] Freeze potentially poisonous conditions 

This patch freezes potentially poisonous conditions in conditional
branches so that we do not "move up" conditional branches
"br i1 poison".

Differential Revision: https://reviews.llvm.org/D145008
parent ae05d2b1
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