JIT: Allow compacting loop header blocks (dotnet#97205)

Minor diffs expected. Removes the last dependency on old loops (that I know of).
tmds · Jan 23, 2024 · 044b769 · 044b769
1 parent e7d04e5
commit 044b769
Showing 1 changed file with 0 additions and 6 deletions.
diff --git 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))