diff --git a/gcc/config/loongarch/lasx.md b/gcc/config/loongarch/lasx.md
index 2bc5d47ed4a..483d78bb210 100644
--- a/gcc/config/loongarch/lasx.md
+++ b/gcc/config/loongarch/lasx.md
@@ -5171,3 +5171,77 @@
 					      const0_rtx));
   DONE;
 })
+
+(define_expand "avg<mode>3_ceil"
+  [(match_operand:ILASX_WHB 0 "register_operand")
+   (match_operand:ILASX_WHB 1 "register_operand")
+   (match_operand:ILASX_WHB 2 "register_operand")]
+  "ISA_HAS_LASX"
+{
+  emit_insn (gen_lasx_xvavgr_s_<lasxfmt> (operands[0], operands[1], operands[2]));
+  DONE;
+})
+
+(define_expand "uavg<mode>3_ceil"
+  [(match_operand:ILASX_WHB 0 "register_operand")
+   (match_operand:ILASX_WHB 1 "register_operand")
+   (match_operand:ILASX_WHB 2 "register_operand")]
+  "ISA_HAS_LASX"
+{
+  emit_insn (gen_lasx_xvavgr_u_<lasxfmt_u> (operands[0], operands[1], operands[2]));
+  DONE;
+})
+
+(define_expand "avg<mode>3_floor"
+  [(match_operand:ILASX_WHB 0 "register_operand")
+   (match_operand:ILASX_WHB 1 "register_operand")
+   (match_operand:ILASX_WHB 2 "register_operand")]
+  "ISA_HAS_LASX"
+{
+  emit_insn (gen_lasx_xvavg_s_<lasxfmt> (operands[0], operands[1], operands[2]));
+  DONE;
+})
+
+(define_expand "uavg<mode>3_floor"
+  [(match_operand:ILASX_WHB 0 "register_operand")
+   (match_operand:ILASX_WHB 1 "register_operand")
+   (match_operand:ILASX_WHB 2 "register_operand")]
+  "ISA_HAS_LASX"
+{
+  emit_insn (gen_lasx_xvavg_u_<lasxfmt_u> (operands[0], operands[1], operands[2]));
+  DONE;
+})
+
+(define_expand "usadv32qi"
+  [(match_operand:V8SI 0 "register_operand")
+   (match_operand:V32QI 1 "register_operand")
+   (match_operand:V32QI 2 "register_operand")
+   (match_operand:V8SI 3 "register_operand")]
+  "ISA_HAS_LASX"
+{
+  rtx t1 = gen_reg_rtx (V32QImode);
+  rtx t2 = gen_reg_rtx (V16HImode);
+  rtx t3 = gen_reg_rtx (V8SImode);
+  emit_insn (gen_lasx_xvabsd_u_bu (t1, operands[1], operands[2]));
+  emit_insn (gen_lasx_xvhaddw_h_b (t2, t1, t1));
+  emit_insn (gen_lasx_xvhaddw_w_h (t3, t2, t2));
+  emit_insn (gen_addv8si3 (operands[0], t3, operands[3]));
+  DONE;
+})
+
+(define_expand "ssadv32qi"
+  [(match_operand:V8SI 0 "register_operand")
+   (match_operand:V32QI 1 "register_operand")
+   (match_operand:V32QI 2 "register_operand")
+   (match_operand:V8SI 3 "register_operand")]
+  "ISA_HAS_LASX"
+{
+  rtx t1 = gen_reg_rtx (V32QImode);
+  rtx t2 = gen_reg_rtx (V16HImode);
+  rtx t3 = gen_reg_rtx (V8SImode);
+  emit_insn (gen_lasx_xvabsd_s_b (t1, operands[1], operands[2]));
+  emit_insn (gen_lasx_xvhaddw_h_b (t2, t1, t1));
+  emit_insn (gen_lasx_xvhaddw_w_h (t3, t2, t2));
+  emit_insn (gen_addv8si3 (operands[0], t3, operands[3]));
+  DONE;
+})
diff --git a/gcc/config/loongarch/lsx.md b/gcc/config/loongarch/lsx.md
index 075f6ba569d..b63c6ff4dee 100644
--- a/gcc/config/loongarch/lsx.md
+++ b/gcc/config/loongarch/lsx.md
@@ -3581,6 +3581,80 @@
   DONE;
 })
 
+(define_expand "avg<mode>3_ceil"
+  [(match_operand:ILSX_WHB 0 "register_operand")
+   (match_operand:ILSX_WHB 1 "register_operand")
+   (match_operand:ILSX_WHB 2 "register_operand")]
+  "ISA_HAS_LSX"
+{
+  emit_insn (gen_lsx_vavgr_s_<lsxfmt> (operands[0], operands[1], operands[2]));
+  DONE;
+})
+
+(define_expand "uavg<mode>3_ceil"
+  [(match_operand:ILSX_WHB 0 "register_operand")
+   (match_operand:ILSX_WHB 1 "register_operand")
+   (match_operand:ILSX_WHB 2 "register_operand")]
+  "ISA_HAS_LSX"
+{
+  emit_insn (gen_lsx_vavgr_u_<lsxfmt_u> (operands[0], operands[1], operands[2]));
+  DONE;
+})
+
+(define_expand "avg<mode>3_floor"
+  [(match_operand:ILSX_WHB 0 "register_operand")
+   (match_operand:ILSX_WHB 1 "register_operand")
+   (match_operand:ILSX_WHB 2 "register_operand")]
+  "ISA_HAS_LSX"
+{
+  emit_insn (gen_lsx_vavg_s_<lsxfmt> (operands[0], operands[1], operands[2]));
+  DONE;
+})
+
+(define_expand "uavg<mode>3_floor"
+  [(match_operand:ILSX_WHB 0 "register_operand")
+   (match_operand:ILSX_WHB 1 "register_operand")
+   (match_operand:ILSX_WHB 2 "register_operand")]
+  "ISA_HAS_LSX"
+{
+  emit_insn (gen_lsx_vavg_u_<lsxfmt_u> (operands[0], operands[1], operands[2]));
+  DONE;
+})
+
+(define_expand "usadv16qi"
+  [(match_operand:V4SI 0 "register_operand")
+   (match_operand:V16QI 1 "register_operand")
+   (match_operand:V16QI 2 "register_operand")
+   (match_operand:V4SI 3 "register_operand")]
+  "ISA_HAS_LSX"
+{
+  rtx t1 = gen_reg_rtx (V16QImode);
+  rtx t2 = gen_reg_rtx (V8HImode);
+  rtx t3 = gen_reg_rtx (V4SImode);
+  emit_insn (gen_lsx_vabsd_u_bu (t1, operands[1], operands[2]));
+  emit_insn (gen_lsx_vhaddw_h_b (t2, t1, t1));
+  emit_insn (gen_lsx_vhaddw_w_h (t3, t2, t2));
+  emit_insn (gen_addv4si3 (operands[0], t3, operands[3]));
+  DONE;
+})
+
+(define_expand "ssadv16qi"
+  [(match_operand:V4SI 0 "register_operand")
+   (match_operand:V16QI 1 "register_operand")
+   (match_operand:V16QI 2 "register_operand")
+   (match_operand:V4SI 3 "register_operand")]
+  "ISA_HAS_LSX"
+{
+  rtx t1 = gen_reg_rtx (V16QImode);
+  rtx t2 = gen_reg_rtx (V8HImode);
+  rtx t3 = gen_reg_rtx (V4SImode);
+  emit_insn (gen_lsx_vabsd_s_b (t1, operands[1], operands[2]));
+  emit_insn (gen_lsx_vhaddw_h_b (t2, t1, t1));
+  emit_insn (gen_lsx_vhaddw_w_h (t3, t2, t2));
+  emit_insn (gen_addv4si3 (operands[0], t3, operands[3]));
+  DONE;
+})
+
 (define_insn "lsx_v<optab>wev_d_w<u>"
   [(set (match_operand:V2DI 0 "register_operand" "=f")
 	(addsubmul:V2DI
diff --git a/gcc/testsuite/gcc.target/loongarch/avg-ceil-lasx.c b/gcc/testsuite/gcc.target/loongarch/avg-ceil-lasx.c
new file mode 100644
index 00000000000..a4fc7a63f97
--- /dev/null
+++ b/gcc/testsuite/gcc.target/loongarch/avg-ceil-lasx.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-O3 -mlasx" } */
+/* { dg-final { scan-assembler "xvavgr.b" } } */
+/* { dg-final { scan-assembler "xvavgr.bu" } } */
+/* { dg-final { scan-assembler "xvavgr.hu" } } */
+/* { dg-final { scan-assembler "xvavgr.h" } } */
+
+#define N 1024
+
+#define TEST(TYPE, NAME)                                        \
+  TYPE a_##NAME[N], b_##NAME[N], c_##NAME[N];                   \
+  void f_##NAME (void)                                          \
+  {                                                             \
+    int i;                                                      \
+    for (i = 0; i < N; i++)                                     \
+      a_##NAME[i] = (b_##NAME[i] + c_##NAME[i] + 1) >> 1;       \
+  }
+                                                                 
+TEST(char, 1);
+TEST(short, 2);
+TEST(unsigned char, 3);
+TEST(unsigned short, 4);
diff --git a/gcc/testsuite/gcc.target/loongarch/avg-ceil-lsx.c b/gcc/testsuite/gcc.target/loongarch/avg-ceil-lsx.c
new file mode 100644
index 00000000000..7aae01600d7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/loongarch/avg-ceil-lsx.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-O3 -mlsx" } */
+/* { dg-final { scan-assembler "vavgr.b" } } */
+/* { dg-final { scan-assembler "vavgr.bu" } } */
+/* { dg-final { scan-assembler "vavgr.hu" } } */
+/* { dg-final { scan-assembler "vavgr.h" } } */
+
+#define N 1024
+
+#define TEST(TYPE, NAME)                                        \
+  TYPE a_##NAME[N], b_##NAME[N], c_##NAME[N];                   \
+  void f_##NAME (void)                                          \
+  {                                                             \
+    int i;                                                      \
+    for (i = 0; i < N; i++)                                     \
+      a_##NAME[i] = (b_##NAME[i] + c_##NAME[i] + 1) >> 1;       \
+  }
+                                                                 
+TEST(char, 1);
+TEST(short, 2);
+TEST(unsigned char, 3);
+TEST(unsigned short, 4);
diff --git a/gcc/testsuite/gcc.target/loongarch/avg-floor-lasx.c b/gcc/testsuite/gcc.target/loongarch/avg-floor-lasx.c
new file mode 100644
index 00000000000..da6956f6f91
--- /dev/null
+++ b/gcc/testsuite/gcc.target/loongarch/avg-floor-lasx.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-O3 -mlasx" } */
+/* { dg-final { scan-assembler "xvavg.b" } } */
+/* { dg-final { scan-assembler "xvavg.bu" } } */
+/* { dg-final { scan-assembler "xvavg.hu" } } */
+/* { dg-final { scan-assembler "xvavg.h" } } */
+
+#define N 1024
+
+#define TEST(TYPE, NAME)                                        \
+  TYPE a_##NAME[N], b_##NAME[N], c_##NAME[N];                   \
+  void f_##NAME (void)                                          \
+  {                                                             \
+    int i;                                                      \
+    for (i = 0; i < N; i++)                                     \
+      a_##NAME[i] = (b_##NAME[i] + c_##NAME[i]) >> 1;           \
+  }
+                                                                 
+TEST(char, 1);
+TEST(short, 2);
+TEST(unsigned char, 3);
+TEST(unsigned short, 4);
diff --git a/gcc/testsuite/gcc.target/loongarch/avg-floor-lsx.c b/gcc/testsuite/gcc.target/loongarch/avg-floor-lsx.c
new file mode 100644
index 00000000000..d16c23ac0cc
--- /dev/null
+++ b/gcc/testsuite/gcc.target/loongarch/avg-floor-lsx.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-O3 -mlsx" } */
+/* { dg-final { scan-assembler "vavg.b" } } */
+/* { dg-final { scan-assembler "vavg.bu" } } */
+/* { dg-final { scan-assembler "vavg.hu" } } */
+/* { dg-final { scan-assembler "vavg.h" } } */
+
+#define N 1024
+
+#define TEST(TYPE, NAME)                                        \
+  TYPE a_##NAME[N], b_##NAME[N], c_##NAME[N];                   \
+  void f_##NAME (void)                                          \
+  {                                                             \
+    int i;                                                      \
+    for (i = 0; i < N; i++)                                     \
+      a_##NAME[i] = (b_##NAME[i] + c_##NAME[i]) >> 1;           \
+  }
+                                                                 
+TEST(char, 1);
+TEST(short, 2);
+TEST(unsigned char, 3);
+TEST(unsigned short, 4);
diff --git a/gcc/testsuite/gcc.target/loongarch/sad-lasx.c b/gcc/testsuite/gcc.target/loongarch/sad-lasx.c
new file mode 100644
index 00000000000..47ca4039489
--- /dev/null
+++ b/gcc/testsuite/gcc.target/loongarch/sad-lasx.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */                               
+/* { dg-options "-O3 -mlasx" } */
+
+#define N 1024
+
+#define TEST(SIGN)                                             \
+  SIGN char a_##SIGN[N], b_##SIGN[N];                          \
+  int f_##SIGN (void)                                          \
+  {                                                            \
+    int i, sum = 0;                                            \
+    for (i = 0; i < N; i++)                                    \
+      sum += __builtin_abs (a_##SIGN[i] - b_##SIGN[i]);;       \
+    return sum;                                                \
+  }
+
+TEST(signed);
+TEST(unsigned);
+
+/* { dg-final { scan-assembler {\txvabsd.bu\t} } } */
+/* { dg-final { scan-assembler {\txvabsd.b\t} } } */
diff --git a/gcc/testsuite/gcc.target/loongarch/sad-lsx.c b/gcc/testsuite/gcc.target/loongarch/sad-lsx.c
new file mode 100644
index 00000000000..2aadf3d9309
--- /dev/null
+++ b/gcc/testsuite/gcc.target/loongarch/sad-lsx.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */                               
+/* { dg-options "-O3 -mlsx" } */
+
+#define N 1024
+
+#define TEST(SIGN)                                             \
+  SIGN char a_##SIGN[N], b_##SIGN[N];                          \
+  int f_##SIGN (void)                                          \
+  {                                                            \
+    int i, sum = 0;                                            \
+    for (i = 0; i < N; i++)                                    \
+      sum += __builtin_abs (a_##SIGN[i] - b_##SIGN[i]);;       \
+    return sum;                                                \
+  }
+
+TEST(signed);
+TEST(unsigned);
+
+/* { dg-final { scan-assembler {\tvabsd.bu\t} } } */
+/* { dg-final { scan-assembler {\tvabsd.b\t} } } */
