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d075e066f3
Summary:
This fixes PR45302.
Previously the case
BB1
/ \
| |
TBB FBB
| |
\ /
BB2
was treated as a valid diamond also when TBB and FBB was the same basic
block. This then lead to a failed assertion in IfConvertDiamond.
Since TBB == FBB is quite a degenerated case of a diamond, we now
don't treat it as a valid diamond anymore, and thus we will avoid the
trouble of making IfConvertDiamond handle it correctly.
Reviewers: efriedma, kparzysz
Reviewed By: efriedma
Subscribers: hiraditya, llvm-commits
Differential Revision: https://reviews.llvm.org/D77651
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