[NFC][SimplifyCFG] SinkCommonCodeFromPredecessors(): early return if nothing to sink
authorRoman Lebedev <lebedev.ri@gmail.com>
Wed, 15 Jul 2020 20:46:35 +0000 (23:46 +0300)
committerRoman Lebedev <lebedev.ri@gmail.com>
Wed, 15 Jul 2020 21:21:55 +0000 (00:21 +0300)
commit4c798644881abc4c43a7cdbc5df465fff04d03e3
treee401c16f64e0e6fc4aba973278f75a4fb40c6808
parent702a3c6410ab4ec89e4e137c58e59505e1860ba0
[NFC][SimplifyCFG] SinkCommonCodeFromPredecessors(): early return if nothing to sink

If we can't sink even one instruction, early return, to increase readability.
llvm/lib/Transforms/Utils/SimplifyCFG.cpp