From 81c6fed4d833f67749abace512dd7f8f372b1369 Mon Sep 17 00:00:00 2001
From: "yu.dongliang" <18588496441@163.com>
Date: Sat, 30 Dec 2023 22:46:48 +0800
Subject: [PATCH] delete some unused code

---
 core/scf_3ac.c                   | 27 +++++++++++++--------------
 core/scf_optimizer_basic_block.c |  6 ------
 core/scf_optimizer_group.c       |  1 -
 core/scf_optimizer_loop.c        |  4 +---
 core/scf_pointer_alias.c         |  4 ----
 5 files changed, 14 insertions(+), 28 deletions(-)

diff --git a/core/scf_3ac.c b/core/scf_3ac.c
index edc8cca..e15270c 100644
--- a/core/scf_3ac.c
+++ b/core/scf_3ac.c
@@ -635,12 +635,15 @@ static int _3ac_code_to_dag(scf_3ac_code_t* c, scf_list_t* dag, int nb_operands0
 
 int scf_3ac_code_to_dag(scf_3ac_code_t* c, scf_list_t* dag)
 {
+	scf_3ac_operand_t* src;
+	scf_3ac_operand_t* dst;
+
 	int ret = 0;
 
 	if (scf_type_is_assign(c->op->type)) {
 
-		scf_3ac_operand_t* src = c->srcs->data[0];
-		scf_3ac_operand_t* dst = c->dsts->data[0];
+		src = c->srcs->data[0];
+		dst = c->dsts->data[0];
 
 		ret = scf_dag_get_node(dag, src->node, &src->dag_node);
 		if (ret < 0)
@@ -688,7 +691,6 @@ int scf_3ac_code_to_dag(scf_3ac_code_t* c, scf_list_t* dag)
 			|| scf_type_is_assign_dereference(c->op->type)
 			|| scf_type_is_assign_pointer(c->op->type)) {
 
-		scf_3ac_operand_t* src;
 		scf_dag_node_t*    assign;
 
 		assert(c->srcs);
@@ -714,7 +716,6 @@ int scf_3ac_code_to_dag(scf_3ac_code_t* c, scf_list_t* dag)
 	} else if (SCF_OP_3AC_CMP == c->op->type
 			|| SCF_OP_3AC_TEQ == c->op->type) {
 
-		scf_3ac_operand_t* src;
 		scf_dag_node_t*    dn_cmp = scf_dag_node_alloc(c->op->type, NULL, NULL);
 
 		scf_list_add_tail(dag, &dn_cmp->list);
@@ -741,8 +742,7 @@ int scf_3ac_code_to_dag(scf_3ac_code_t* c, scf_list_t* dag)
 			|| SCF_OP_3AC_SETGE == c->op->type) {
 
 		assert(c->dsts && 1 == c->dsts->size);
-
-		scf_3ac_operand_t* dst      = c->dsts->data[0];
+		dst = c->dsts->data[0];
 
 		scf_dag_node_t*    dn_setcc = scf_dag_node_alloc(c->op->type, NULL, NULL);
 		scf_list_add_tail(dag, &dn_setcc->list);
@@ -762,11 +762,11 @@ int scf_3ac_code_to_dag(scf_3ac_code_t* c, scf_list_t* dag)
 			|| SCF_OP_3AC_INC  == c->op->type
 			|| SCF_OP_3AC_DEC  == c->op->type) {
 
-		scf_3ac_operand_t* src = c->srcs->data[0];
+		src = c->srcs->data[0];
 
 		assert(src->node->parent);
-		scf_variable_t*    var_parent = _scf_operand_get(src->node->parent);
-		scf_dag_node_t*    dn_parent  = scf_dag_node_alloc(c->op->type, var_parent, NULL);
+		scf_variable_t*    v_parent = _scf_operand_get(src->node->parent);
+		scf_dag_node_t*    dn_parent  = scf_dag_node_alloc(c->op->type, v_parent, NULL);
 		scf_list_add_tail(dag, &dn_parent->list);
 
 		ret = scf_dag_get_node(dag, src->node, &src->dag_node);
@@ -778,14 +778,13 @@ int scf_3ac_code_to_dag(scf_3ac_code_t* c, scf_list_t* dag)
 			return ret;
 
 		if (c->dsts) {
-			scf_3ac_operand_t* dst = c->dsts->data[0];
+			dst = c->dsts->data[0];
 			assert(dst->node);
 			dst->dag_node = dn_parent;
 		}
 	} else if (SCF_OP_RETURN == c->op->type) {
 
 		if (c->srcs) {
-			scf_3ac_operand_t* src;
 			scf_dag_node_t*    dn_return = scf_dag_node_alloc(c->op->type, NULL, NULL);
 
 			scf_list_add_tail(dag, &dn_return->list);
@@ -812,11 +811,11 @@ int scf_3ac_code_to_dag(scf_3ac_code_t* c, scf_list_t* dag)
 		int nb_operands1   = -1;
 
 		if (c->dsts) {
-			scf_3ac_operand_t* dst0 = c->dsts->data[0];
+			dst = c->dsts->data[0];
 
-			assert(dst0->node->op);
+			assert(dst->node->op);
 
-			nb_operands0 = dst0->node->op->nb_operands;
+			nb_operands0 = dst->node->op->nb_operands;
 			nb_operands1 = nb_operands0;
 
 			switch (c->op->type) {
diff --git a/core/scf_optimizer_basic_block.c b/core/scf_optimizer_basic_block.c
index 66ad72e..d2d99c3 100644
--- a/core/scf_optimizer_basic_block.c
+++ b/core/scf_optimizer_basic_block.c
@@ -138,15 +138,11 @@ static int _bb_dag_update(scf_basic_block_t* bb)
 static int __optimize_basic_block(scf_basic_block_t* bb, scf_function_t* f)
 {
 	scf_3ac_operand_t* src;
-	scf_3ac_operand_t* src2;
 	scf_3ac_operand_t* dst;
-	scf_3ac_operand_t* dst2;
 	scf_dag_node_t*    dn;
 	scf_3ac_code_t*    c;
-	scf_3ac_code_t*    c2;
 	scf_vector_t*      roots;
 	scf_list_t*        l;
-	scf_list_t*        l2;
 	scf_list_t         h;
 
 	int ret;
@@ -218,13 +214,11 @@ static int __optimize_basic_block(scf_basic_block_t* bb, scf_function_t* f)
 		c->basic_block = bb;
 	}
 
-#if 1
 	ret = scf_basic_block_active_vars(bb);
 	if (ret < 0) {
 		scf_loge("\n");
 		return ret;
 	}
-#endif
 
 	scf_dag_node_free_list(&bb->dag_list_head);
 	scf_vector_free(roots);
diff --git a/core/scf_optimizer_group.c b/core/scf_optimizer_group.c
index 75f9698..cc9f9ad 100644
--- a/core/scf_optimizer_group.c
+++ b/core/scf_optimizer_group.c
@@ -4,7 +4,6 @@ int bbg_find_entry_exit(scf_bb_group_t* bbg)
 {
 	scf_basic_block_t* bb;
 	scf_basic_block_t* bb2;
-	scf_bb_group_t*    bbg2;
 
 	int j;
 	int k;
diff --git a/core/scf_optimizer_loop.c b/core/scf_optimizer_loop.c
index 08d2e5f..387ce87 100644
--- a/core/scf_optimizer_loop.c
+++ b/core/scf_optimizer_loop.c
@@ -3,10 +3,8 @@
 static int __bb_dfs_loop2(scf_basic_block_t* root, scf_vector_t* loop)
 {
 	scf_basic_block_t* bb;
-	scf_bb_edge_t*     edge;
 
 	int i;
-	int ret;
 
 	assert(!root->jmp_flag);
 
@@ -19,7 +17,7 @@ static int __bb_dfs_loop2(scf_basic_block_t* root, scf_vector_t* loop)
 		if (bb->visited_flag)
 			continue;
 
-		ret = scf_vector_add(loop, bb);
+		int ret = scf_vector_add(loop, bb);
 		if ( ret < 0)
 			return ret;
 
diff --git a/core/scf_pointer_alias.c b/core/scf_pointer_alias.c
index 1dcdc21..731c3bb 100644
--- a/core/scf_pointer_alias.c
+++ b/core/scf_pointer_alias.c
@@ -731,10 +731,6 @@ int _dn_status_alias_dereference(scf_vector_t* aliases, scf_dn_status_t* ds_poin
 	scf_3ac_code_t*  c2;
 	scf_list_t*      l2;
 
-	int count;
-	int ret;
-	int i;
-
 	assert(ds_pointer);
 	assert(ds_pointer->dag_node);
 
-- 
2.25.1