From dbd8f06f9de1b92286901b2bc92b1ce94776352e Mon Sep 17 00:00:00 2001
From: "Aman Khalid (from Dev Box)" <amankhalid@microsoft.com>
Date: Mon, 20 Jan 2025 15:04:51 -0500
Subject: [PATCH] Don't let 4-opt mess up EH regions

---
 src/coreclr/jit/fgopt.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/coreclr/jit/fgopt.cpp b/src/coreclr/jit/fgopt.cpp
index ccd1a24098c3aa..d2f9db28b07912 100644
--- a/src/coreclr/jit/fgopt.cpp
+++ b/src/coreclr/jit/fgopt.cpp
@@ -5482,8 +5482,8 @@ bool Compiler::ThreeOptLayout::RunGreedyThreeOptPass(unsigned startPos, unsigned
                     continue;
                 }
 
-                // Don't consider any cut points that would move try/handler entries
-                if (compiler->bbIsTryBeg(s3BlockPrev) || compiler->bbIsHandlerBeg(s3BlockPrev))
+                // Don't consider any cut points that would disturb other EH regions
+                if (!BasicBlock::sameEHRegion(s2Block, s3Block))
                 {
                     continue;
                 }