Florian Schneider
b043314bce
Without tracking dependencies more explicitly we can't propagate the cid of values whose cid is guarded by a CheckClassId: The CheckClassId c may not be hoisted by LICM because it is guarded by a Redefinition r. However, after constant propagation and branch simplification code that was not previously dominated by c (and r) may become dominated by c and r. This code won't be using the redefined value r, but the original value and therefore LICM can illegally eliminated checks / hoist dependent loads. BUG= R=vegorov@google.com Review URL: https://codereview.chromium.org/1928633002 .
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