JIT: fix up switch map for out-of-loop predecessor (#64014)

If we have a loop where some of the non-loop predecessors are switchs, and we add pre-header to the loop, we need to update the switch map for those predecessors. Fixes #63982.
dotnet · Jan 20, 2022 · a618086 · a618086
1 parent 7f828a7
commit a618086
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/coreclr/jit/optimizer.cpp b/src/coreclr/jit/optimizer.cpp
@@ -7572,6 +7572,8 @@ void Compiler::fgCreateLoopPreHeader(unsigned lnum)
                         fgAddRefPred(preHead, predBlock);
                     }
                 } while (++jumpTab, --jumpCnt);
+
+                UpdateSwitchTableTarget(predBlock, entry, preHead);
                 break;
 
             default: