Revert "[DSE] Enable initializes improvement (#119116)"

This reverts commit ebe741f.

Author: haopliu

llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp

@@ -164,9 +164,9 @@ static cl::opt<bool>
     OptimizeMemorySSA("dse-optimize-memoryssa", cl::init(true), cl::Hidden,
                       cl::desc("Allow DSE to optimize memory accesses."));
 
-// TODO: remove this flag.
+// TODO: turn on and remove this flag.
 static cl::opt<bool> EnableInitializesImprovement(
-    "enable-dse-initializes-attr-improvement", cl::init(true), cl::Hidden,
+    "enable-dse-initializes-attr-improvement", cl::init(false), cl::Hidden,
     cl::desc("Enable the initializes attr improvement in DSE"));
 
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