[llvm] [LICM] Use DomTreeUpdater version of SplitBlockPredecessors, nfc (PR #107190)

[Nikita Popov via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt -S -passes='cgscc(devirt<4>(inline,function<eager-inv;no-rerun>(early-cse<memssa>,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,loop-mssa(licm<allowspeculation>))))' < %s | FileCheck %s
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nikic wrote:

It's usually also possible to use some at least partially inlined IR.

https://github.com/llvm/llvm-project/pull/107190