From 044b76947351efc101300fb506195b9e8d7865bc Mon Sep 17 00:00:00 2001
From: Jakob Botsch Nielsen <Jakob.botsch.nielsen@gmail.com>
Date: Fri, 19 Jan 2024 21:13:52 +0100
Subject: [PATCH] JIT: Allow compacting loop header blocks (#97205)

Minor diffs expected. Removes the last dependency on old loops (that I
know of).
---
 src/coreclr/jit/fgopt.cpp | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/src/coreclr/jit/fgopt.cpp b/src/coreclr/jit/fgopt.cpp
index 996ed5dd16f0e6..16ef174b53c63f 100644
--- a/src/coreclr/jit/fgopt.cpp
+++ b/src/coreclr/jit/fgopt.cpp
@@ -945,12 +945,6 @@ bool Compiler::fgCanCompactBlocks(BasicBlock* block, BasicBlock* bNext)
         return false;
     }
 
-    // Don't compact away any loop entry blocks that we added in optCanonicalizeLoops
-    if (block->HasFlag(BBF_OLD_LOOP_HEADER_QUIRK))
-    {
-        return false;
-    }
-
     // We don't want to compact blocks that are in different Hot/Cold regions
     //
     if (fgInDifferentRegions(block, bNext))