[llvm] [ControlFlowHub] Add support for switch-based guards (PR #213549)

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git-clang-format --diff origin/main HEAD --extensions cpp,h -- llvm/include/llvm/Transforms/Utils/ControlFlowUtils.h llvm/include/llvm/Transforms/Utils/FixIrreducible.h llvm/include/llvm/Transforms/Utils/UnifyLoopExits.h llvm/lib/Passes/PassBuilder.cpp llvm/lib/Transforms/Utils/ControlFlowUtils.cpp llvm/lib/Transforms/Utils/FixIrreducible.cpp llvm/lib/Transforms/Utils/UnifyLoopExits.cpp --diff_from_common_commit
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diff --git a/llvm/include/llvm/Transforms/Utils/ControlFlowUtils.h b/llvm/include/llvm/Transforms/Utils/ControlFlowUtils.h
index 93558a135..f2dc38f76 100644
--- a/llvm/include/llvm/Transforms/Utils/ControlFlowUtils.h
+++ b/llvm/include/llvm/Transforms/Utils/ControlFlowUtils.h
@@ -35,8 +35,8 @@ class DomTreeUpdater;
 /// guard blocks are returned in the argument vector `GuardBlocks`.
 ///
 /// In the case of a switch guard, the hub consists only of a single guard block
-/// containing a switch instruction that branches to all outgoing blocks (with an
-/// unreachable default destination). `GuardBlocks` will contain this single
+/// containing a switch instruction that branches to all outgoing blocks (with
+/// an unreachable default destination). `GuardBlocks` will contain this single
 /// guard block.
 ///
 /// This also updates any PHINodes in the successor. For each such PHINode, the
diff --git a/llvm/lib/Transforms/Utils/UnifyLoopExits.cpp b/llvm/lib/Transforms/Utils/UnifyLoopExits.cpp
index a0f78a99b..56162d1de 100644
--- a/llvm/lib/Transforms/Utils/UnifyLoopExits.cpp
+++ b/llvm/lib/Transforms/Utils/UnifyLoopExits.cpp
@@ -147,7 +147,8 @@ static void restoreSSA(const DominatorTree &DT, const Loop *L,
   }
 }
 
-static bool unifyLoopExits(DominatorTree &DT, LoopInfo &LI, Loop *L, bool SwitchGuards) {
+static bool unifyLoopExits(DominatorTree &DT, LoopInfo &LI, Loop *L,
+                           bool SwitchGuards) {
   // To unify the loop exits, we need a list of the exiting blocks as
   // well as exit blocks. The functions for locating these lists both
   // traverse the entire loop body. It is more efficient to first

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https://github.com/llvm/llvm-project/pull/213549