Disable the sccp pass by default and add an unsupported test for sccp.

include/ttmlir/Dialect/TTIR/Pipelines/TTIRPipelines.h

@@ -19,7 +19,8 @@ struct StableHLOToTTIRPipelineOptions
       llvm::cl::init(true)};
   Option<bool> sparseConstantPropagationEnabled{
       *this, "enable-sparse-constant-propagation",
-      llvm::cl::desc("Enable --sccp optimization pass."), llvm::cl::init(true)};
+      llvm::cl::desc("Enable --sccp optimization pass."),
+      llvm::cl::init(false)};
 };
 
 void createStableHLOToTTIRPipeline(

test/ttmlir/Conversion/StableHLOToTTIR/test_constant_propagation.mlir

@@ -0,0 +1,13 @@
+// UNSUPPORTED: true
+// REQUIRES: stablehlo
+// RUN: ttmlir-opt --stablehlo-to-ttir-pipeline  %s | FileCheck %s
+#any_device = #tt.operand_constraint<dram|l1|scalar|tile|any_device|any_device_tile>
+module @jit_eltwise_convert attributes {} {
+  func.func public @test_convert(%arg0: tensor<32x32xi32>) -> tensor<32x32xi32> {
+    %0 = stablehlo.constant dense<0> : tensor<32x32xi32>
+    %1 = stablehlo.add %0, %0 : tensor<32x32xi32>
+    %2 = stablehlo.multiply %1, %arg0 : tensor<32x32xi32>
+    return %2 : tensor<32x32xi32>
+    // CHECK-NOT: %[[C:.*]] = "ttir.add"[[C:.*]]
+  }
+}