[llvm] [polly] [IR] Add CallBr intrinsics support (PR #133907)

[Bill Wendling via llvm-commits]

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@@ -553,6 +553,21 @@ bool RegionInfoBase<Tr>::isRegion(BlockT *entry, BlockT *exit) const {
 
   using DST = typename DomFrontierT::DomSetType;
 
+  // Make sure that a region involving a callbr contains every successor
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bwendling wrote:

Agreed. Please make this a separate patch.

https://github.com/llvm/llvm-project/pull/133907