Disable forward sub randomly

jakobbotsch · Sep 22, 2022 · f4cc126 · f4cc126
1 parent 73ed3cf
commit f4cc126
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/coreclr/jit/forwardsub.cpp b/src/coreclr/jit/forwardsub.cpp
@@ -116,6 +116,12 @@ PhaseStatus Compiler::fgForwardSub()
     }
 #endif
 
+    CLRRandom rng;
+    rng.Init(info.compILCodeSize ^ info.compILlocalsCount ^ 0x12345678);
+    if (rng.Next(10) == 0)
+    {
+        return PhaseStatus::MODIFIED_NOTHING;
+    }
     bool changed = false;
 
     for (BasicBlock* const block : Blocks())