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diff --git a/‎paddle/cinn/optim/CMakeLists.txt
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-2Lines changed: 0 additions & 2 deletions b/‎paddle/cinn/optim/CMakeLists.txt
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-2Lines changed: 0 additions & 2 deletions
diff --git a/‎paddle/cinn/optim/if_simplify.cc
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-57Lines changed: 0 additions & 57 deletions b/‎paddle/cinn/optim/if_simplify.cc
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-57Lines changed: 0 additions & 57 deletions
diff --git a/‎paddle/cinn/optim/if_simplify.h
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-22Lines changed: 0 additions & 22 deletions b/‎paddle/cinn/optim/if_simplify.h
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-22Lines changed: 0 additions & 22 deletions
diff --git a/‎paddle/cinn/optim/if_simplify_test.cc
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-72Lines changed: 0 additions & 72 deletions b/‎paddle/cinn/optim/if_simplify_test.cc
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diff --git a/‎paddle/cinn/optim/ir_simplify.cc
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+1-26Lines changed: 1 addition & 26 deletions b/‎paddle/cinn/optim/ir_simplify.cc
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+1-26Lines changed: 1 addition & 26 deletions
diff --git a/‎paddle/cinn/optim/optimize.cc
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-5Lines changed: 0 additions & 5 deletions b/‎paddle/cinn/optim/optimize.cc
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@@ -24,7 +24,6 @@ gather_srcs(
   buffer_assign.cc
   replace_const_param_to_integer.cc
   cast_simplify.cc
-  if_simplify.cc
   lower_intrin.cc
   cast_bool_to_int8.cc
   collect_undefined_vars.cc
@@ -60,7 +59,6 @@ cinn_cc_test(test_optimize SRCS optimize_test.cc DEPS cinncore)
 cinn_cc_test(test_cache_read_write_replace SRCS
              cache_read_write_replace_test.cc DEPS cinncore)
 cinn_cc_test(test_cast_simplify SRCS cast_simplify_test.cc DEPS cinncore)
-cinn_cc_test(test_if_simplify SRCS if_simplify_test.cc DEPS cinncore)
 cinn_cc_test(test_remove_schedule_block SRCS remove_schedule_block_test.cc DEPS
              cinncore)
 cinn_cc_test(test_unroll_loops SRCS unroll_loops_test.cc DEPS cinncore)
@@ -299,9 +299,6 @@ struct SimplifyBlocksMutator : public ir::IRMutator<> {
       *expr = node->stmts[0];
       Visit(expr, expr);
     } else {
-      for (auto& s : node->stmts) {
-        Visit(&s, &s);
-      }
       std::vector<Expr> stmts;
       for (auto& s : node->stmts) {
         if (s.As<ir::Block>()) {
@@ -311,35 +308,13 @@ struct SimplifyBlocksMutator : public ir::IRMutator<> {
             stmts.push_back(inner_stmt);
           }
         } else {
+          IRMutator<>::Visit(&s, &s);
           stmts.push_back(s);
         }
       }
       expr->As<ir::Block>()->stmts = stmts;
     }
   }
-
-  void Visit(const IfThenElse* op, Expr* expr) override {
-    if (op->condition.As<ir::UIntImm>()) {
-      if (op->condition.as_bool() == false) {
-        VLOG(6) << "Simplify ir::IfThenElse false block";
-        if (expr->As<IfThenElse>()->false_case.defined()) {
-          *expr = expr->As<IfThenElse>()->false_case;
-        } else {
-          *expr = ir::Block::Make({});
-        }
-      } else {
-        if (expr->As<IfThenElse>()->true_case.defined()) {
-          VLOG(6) << "Simplify ir::IfThenElse true block";
-          *expr = expr->As<IfThenElse>()->true_case;
-        } else {
-          *expr = ir::Block::Make({});
-        }
-      }
-      ir::IRMutator<ir::Expr*>::Visit(expr, expr);
-      return;
-    }
-    ir::IRMutator<ir::Expr*>::Visit(op, expr);
-  }
 };
 
 struct SimplifyForLoopsMutator : public ir::IRMutator<> {
 
@@ -23,7 +23,6 @@
 #include "paddle/cinn/optim/eliminate_broadcast_in_forloop.h"
 #include "paddle/cinn/optim/extern_call_process.h"
 #include "paddle/cinn/optim/fold_cinn_call_arguments.h"
-#include "paddle/cinn/optim/if_simplify.h"
 #include "paddle/cinn/optim/insert_debug_log_callee.h"
 #include "paddle/cinn/optim/ir_simplify.h"
 #include "paddle/cinn/optim/lower_function_call_bind_vars.h"
@@ -79,10 +78,6 @@ Expr Optimize(Expr e,
   Simplify(&copied);
   VLOG(10) << "After Optimize Simplify:" << copied;
 
-  // TODO(LiuYang): I attends to remove this part code, I integate it into
-  // ifthenelse part IfSimplify(&copied); VLOG(10) << "After Optimize
-  // IfSimplify:" << copied;
-
   if (runtime_debug_info) {
     LOG(WARNING) << "Turn on runtime debug information output";
     InsertDebugLogCallee(&copied);