Joseph Tremoulet 40cd262c43 Loop peeling: check that latch is conditional branch ...

Loop peeling assumes that the loop's latch is a conditional branch.  Add
a check to canPeel that explicitly checks for this, and testcases that
otherwise fail an assertion when trying to peel a loop whose back-edge
is a switch case or the non-unwind edge of an invoke.

Reviewed By: skatkov, fhahn

Differential Revision: https://reviews.llvm.org/D94995

2021-01-20 11:01:16 -05:00

34 KiB

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