diff --git a/src/coreclr/jit/compiler.h b/src/coreclr/jit/compiler.h
index c03192ec9eac9f..01fbc8c9df2919 100644
--- a/src/coreclr/jit/compiler.h
+++ b/src/coreclr/jit/compiler.h
@@ -9394,11 +9394,19 @@ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
             return IsInstrumented() && jitFlags->IsSet(JitFlags::JIT_FLAG_BBOPT);
         }
 
-        bool CanBeInstrumentedOrIsOptimized() const
+        bool DoEarlyBlockMerging() const
         {
-            return IsInstrumented() || (jitFlags->IsSet(JitFlags::JIT_FLAG_TIER0) &&
-                                        jitFlags->IsSet(JitFlags::JIT_FLAG_BBINSTR_IF_LOOPS)) ||
-                   jitFlags->IsSet(JitFlags::JIT_FLAG_BBOPT);
+            if (jitFlags->IsSet(JitFlags::JIT_FLAG_DEBUG_EnC) || jitFlags->IsSet(JitFlags::JIT_FLAG_DEBUG_CODE))
+            {
+                return false;
+            }
+
+            if (jitFlags->IsSet(JitFlags::JIT_FLAG_MIN_OPT) && !jitFlags->IsSet(JitFlags::JIT_FLAG_TIER0))
+            {
+                return false;
+            }
+
+            return true;
         }
 
         // true if we should use the PINVOKE_{BEGIN,END} helpers instead of generating
diff --git a/src/coreclr/jit/fgbasic.cpp b/src/coreclr/jit/fgbasic.cpp
index 0e009919acbd4f..61f2c846edfaca 100644
--- a/src/coreclr/jit/fgbasic.cpp
+++ b/src/coreclr/jit/fgbasic.cpp
@@ -1840,7 +1840,7 @@ void Compiler::fgFindJumpTargets(const BYTE* codeAddr, IL_OFFSET codeSize, Fixed
 
                 if ((jmpDist == 0) &&
                     (opcode == CEE_LEAVE || opcode == CEE_LEAVE_S || opcode == CEE_BR || opcode == CEE_BR_S) &&
-                    opts.CanBeInstrumentedOrIsOptimized())
+                    opts.DoEarlyBlockMerging())
                 {
                     break; /* NOP */
                 }
@@ -2989,7 +2989,7 @@ unsigned Compiler::fgMakeBasicBlocks(const BYTE* codeAddr, IL_OFFSET codeSize, F
 
                 jmpDist = (sz == 1) ? getI1LittleEndian(codeAddr) : getI4LittleEndian(codeAddr);
 
-                if ((jmpDist == 0) && (opcode == CEE_BR || opcode == CEE_BR_S) && opts.CanBeInstrumentedOrIsOptimized())
+                if ((jmpDist == 0) && (opcode == CEE_BR || opcode == CEE_BR_S) && opts.DoEarlyBlockMerging())
                 {
                     continue; /* NOP */
                 }
diff --git a/src/coreclr/jit/importer.cpp b/src/coreclr/jit/importer.cpp
index 2834cf78ab34e7..04e21bd460aaf1 100644
--- a/src/coreclr/jit/importer.cpp
+++ b/src/coreclr/jit/importer.cpp
@@ -7412,7 +7412,7 @@ void Compiler::impImportBlockCode(BasicBlock* block)
             case CEE_BR_S:
                 jmpDist = (sz == 1) ? getI1LittleEndian(codeAddr) : getI4LittleEndian(codeAddr);
 
-                if ((jmpDist == 0) && opts.CanBeInstrumentedOrIsOptimized())
+                if ((jmpDist == 0) && opts.DoEarlyBlockMerging())
                 {
                     break; /* NOP */
                 }