diff --git a/README.md b/README.md
index 71d3ec3e..9c6f3b30 100644
--- a/README.md
+++ b/README.md
@@ -26,10 +26,6 @@ Vector Set Equal/Less than or Equal/Less Than
 
 Vector Subtract
 
-### vaddwev.h.b/w.h/d.w/q.d
-
-Vector Add with Width Extension
-
 ### vsubwev.h.b/w.h/d.w/q.d
 
 Vector Subtract with Width Extension
@@ -37,10 +33,6 @@ Vector Subtract with Width Extension
 ### vaddwod.h.b/w.h/d.w/q.d
 ### vsubwod.h.b/w.h/d.w/q.d
 
-### vaddwev.h.bu/w.hu/d.wu/q.du
-
-Vector Add with Width Extension Unsigned
-
 ### vsubwev.h.bu/w.hu/d.wu/q.du
 
 Vector Subtract with Width Extension Unsigned
@@ -48,7 +40,6 @@ Vector Subtract with Width Extension Unsigned
 ### vaddwod.h.bu/w.hu/d.wu/q.du
 ### vsubwod.h.bu/w.hu/d.wu/q.du
 
-### vaddwev.h.bu.b/w.hu.h/q.wu.w/q.du.d
 ### vaddwod.h.bu.b/w.hu.h/q.wu.w/q.du.d
 
 ### vsadd.b/h/w/d
@@ -260,8 +251,6 @@ Vector Multiplication High
 
 ### vslti.b/h/w/d/bu/hu/wu/du
 
-### vaddi.bu/hu/wu/du
-
 ### vsubi.bu/hu/wu/du
 
 ### vbsll.v
diff --git a/code/common.h b/code/common.h
index d1d2078d..e6fd4728 100644
--- a/code/common.h
+++ b/code/common.h
@@ -13,6 +13,8 @@ typedef int32_t s32;
 typedef uint32_t u32;
 typedef int64_t s64;
 typedef uint64_t u64;
+typedef __int128 s128;
+typedef unsigned __int128 u128;
 
 #ifndef MACHINE_3C5000
 #define MACHINE_3C5000 0
diff --git a/code/vaddwev_d_w.cpp b/code/vaddwev_d_w.cpp
new file mode 100644
index 00000000..57e24c92
--- /dev/null
+++ b/code/vaddwev_d_w.cpp
@@ -0,0 +1,9 @@
+#include "common.h"
+
+v128 vaddwev_d_w(v128 a, v128 b) {
+  v128 dst;
+#include "vaddwev_d_w.h"
+  return dst;
+}
+
+void test() { FUZZ2(vaddwev_d_w); }
diff --git a/code/vaddwev_d_w.h b/code/vaddwev_d_w.h
new file mode 100644
index 00000000..2d7ea9c7
--- /dev/null
+++ b/code/vaddwev_d_w.h
@@ -0,0 +1,3 @@
+for (int i = 0;i < 2;i++) {
+  dst.dword[i] = (s64)(s32)a.word[2 * i] + (s64)(s32)b.word[2 * i];
+}
diff --git a/code/vaddwev_d_wu.cpp b/code/vaddwev_d_wu.cpp
new file mode 100644
index 00000000..8c19ed3b
--- /dev/null
+++ b/code/vaddwev_d_wu.cpp
@@ -0,0 +1,9 @@
+#include "common.h"
+
+v128 vaddwev_d_wu(v128 a, v128 b) {
+  v128 dst;
+#include "vaddwev_d_wu.h"
+  return dst;
+}
+
+void test() { FUZZ2(vaddwev_d_wu); }
diff --git a/code/vaddwev_d_wu.h b/code/vaddwev_d_wu.h
new file mode 100644
index 00000000..7957d286
--- /dev/null
+++ b/code/vaddwev_d_wu.h
@@ -0,0 +1,3 @@
+for (int i = 0;i < 2;i++) {
+  dst.dword[i] = (u64)(u32)a.word[2 * i] + (u64)(u32)b.word[2 * i];
+}
diff --git a/code/vaddwev_d_wu_w.cpp b/code/vaddwev_d_wu_w.cpp
new file mode 100644
index 00000000..b2a67268
--- /dev/null
+++ b/code/vaddwev_d_wu_w.cpp
@@ -0,0 +1,9 @@
+#include "common.h"
+
+v128 vaddwev_d_wu_w(v128 a, v128 b) {
+  v128 dst;
+#include "vaddwev_d_wu_w.h"
+  return dst;
+}
+
+void test() { FUZZ2(vaddwev_d_wu_w); }
diff --git a/code/vaddwev_d_wu_w.h b/code/vaddwev_d_wu_w.h
new file mode 100644
index 00000000..5359ea65
--- /dev/null
+++ b/code/vaddwev_d_wu_w.h
@@ -0,0 +1,3 @@
+for (int i = 0;i < 2;i++) {
+  dst.dword[i] = (u64)(u32)a.word[2 * i] + (s64)(s32)b.word[2 * i];
+}
diff --git a/code/vaddwev_q_d.cpp b/code/vaddwev_q_d.cpp
new file mode 100644
index 00000000..475f7231
--- /dev/null
+++ b/code/vaddwev_q_d.cpp
@@ -0,0 +1,9 @@
+#include "common.h"
+
+v128 vaddwev_q_d(v128 a, v128 b) {
+  v128 dst;
+#include "vaddwev_q_d.h"
+  return dst;
+}
+
+void test() { FUZZ2(vaddwev_q_d); }
diff --git a/code/vaddwev_q_d.h b/code/vaddwev_q_d.h
new file mode 100644
index 00000000..afdaf5c8
--- /dev/null
+++ b/code/vaddwev_q_d.h
@@ -0,0 +1 @@
+dst.qword[0] = (s128)(s64)a.dword[0] + (s128)(s64)b.dword[0];
diff --git a/code/vaddwev_q_du.cpp b/code/vaddwev_q_du.cpp
new file mode 100644
index 00000000..fadb6719
--- /dev/null
+++ b/code/vaddwev_q_du.cpp
@@ -0,0 +1,9 @@
+#include "common.h"
+
+v128 vaddwev_q_du(v128 a, v128 b) {
+  v128 dst;
+#include "vaddwev_q_du.h"
+  return dst;
+}
+
+void test() { FUZZ2(vaddwev_q_du); }
diff --git a/code/vaddwev_q_du.h b/code/vaddwev_q_du.h
new file mode 100644
index 00000000..0c7d6e4b
--- /dev/null
+++ b/code/vaddwev_q_du.h
@@ -0,0 +1 @@
+dst.qword[0] = (u128)(u64)a.dword[0] + (u128)(u64)b.dword[0];
diff --git a/code/vaddwev_q_du_d.cpp b/code/vaddwev_q_du_d.cpp
new file mode 100644
index 00000000..054970e3
--- /dev/null
+++ b/code/vaddwev_q_du_d.cpp
@@ -0,0 +1,9 @@
+#include "common.h"
+
+v128 vaddwev_q_du_d(v128 a, v128 b) {
+  v128 dst;
+#include "vaddwev_q_du_d.h"
+  return dst;
+}
+
+void test() { FUZZ2(vaddwev_q_du_d); }
diff --git a/code/vaddwev_q_du_d.h b/code/vaddwev_q_du_d.h
new file mode 100644
index 00000000..00aa6ed4
--- /dev/null
+++ b/code/vaddwev_q_du_d.h
@@ -0,0 +1 @@
+dst.qword[0] = (u128)(u64)a.dword[0] + (s128)(s64)b.dword[0];
diff --git a/code/vaddwev_w_h.cpp b/code/vaddwev_w_h.cpp
new file mode 100644
index 00000000..fc15bdc2
--- /dev/null
+++ b/code/vaddwev_w_h.cpp
@@ -0,0 +1,9 @@
+#include "common.h"
+
+v128 vaddwev_w_h(v128 a, v128 b) {
+  v128 dst;
+#include "vaddwev_w_h.h"
+  return dst;
+}
+
+void test() { FUZZ2(vaddwev_w_h); }
diff --git a/code/vaddwev_w_h.h b/code/vaddwev_w_h.h
new file mode 100644
index 00000000..a7e259f3
--- /dev/null
+++ b/code/vaddwev_w_h.h
@@ -0,0 +1,3 @@
+for (int i = 0;i < 4;i++) {
+  dst.word[i] = (s32)(s16)a.half[2 * i] + (s32)(s16)b.half[2 * i];
+}
diff --git a/code/vaddwev_w_hu.cpp b/code/vaddwev_w_hu.cpp
new file mode 100644
index 00000000..85247b68
--- /dev/null
+++ b/code/vaddwev_w_hu.cpp
@@ -0,0 +1,9 @@
+#include "common.h"
+
+v128 vaddwev_w_hu(v128 a, v128 b) {
+  v128 dst;
+#include "vaddwev_w_hu.h"
+  return dst;
+}
+
+void test() { FUZZ2(vaddwev_w_hu); }
diff --git a/code/vaddwev_w_hu.h b/code/vaddwev_w_hu.h
new file mode 100644
index 00000000..5a13d045
--- /dev/null
+++ b/code/vaddwev_w_hu.h
@@ -0,0 +1,3 @@
+for (int i = 0;i < 4;i++) {
+  dst.word[i] = (u32)(u16)a.half[2 * i] + (u32)(u16)b.half[2 * i];
+}
diff --git a/code/vaddwev_w_hu_h.cpp b/code/vaddwev_w_hu_h.cpp
new file mode 100644
index 00000000..e8f7f91b
--- /dev/null
+++ b/code/vaddwev_w_hu_h.cpp
@@ -0,0 +1,9 @@
+#include "common.h"
+
+v128 vaddwev_w_hu_h(v128 a, v128 b) {
+  v128 dst;
+#include "vaddwev_w_hu_h.h"
+  return dst;
+}
+
+void test() { FUZZ2(vaddwev_w_hu_h); }
diff --git a/code/vaddwev_w_hu_h.h b/code/vaddwev_w_hu_h.h
new file mode 100644
index 00000000..62b0421c
--- /dev/null
+++ b/code/vaddwev_w_hu_h.h
@@ -0,0 +1,3 @@
+for (int i = 0;i < 4;i++) {
+  dst.word[i] = (u32)(u16)a.half[2 * i] + (s32)(s16)b.half[2 * i];
+}
diff --git a/docs/lsx_integer/vaddsub.md b/docs/lsx_integer/vaddsub.md
index f91d42c7..fb9118e2 100644
--- a/docs/lsx_integer/vaddsub.md
+++ b/docs/lsx_integer/vaddsub.md
@@ -23,4 +23,17 @@
 {{ vaddi('bu') }}
 {{ vaddi('hu') }}
 {{ vaddi('wu') }}
-{{ vaddi('du') }}
\ No newline at end of file
+{{ vaddi('du') }}
+
+{{ vaddwev('h', 'b') }}
+{{ vaddwev('h', 'bu') }}
+{{ vaddwev('h', 'bu', 'b') }}
+{{ vaddwev('w', 'h') }}
+{{ vaddwev('w', 'hu') }}
+{{ vaddwev('w', 'hu', 'h') }}
+{{ vaddwev('d', 'w') }}
+{{ vaddwev('d', 'wu') }}
+{{ vaddwev('d', 'wu', 'w') }}
+{{ vaddwev('q', 'd') }}
+{{ vaddwev('q', 'du') }}
+{{ vaddwev('q', 'du', 'd') }}
\ No newline at end of file
diff --git a/main.py b/main.py
index b7e6338f..f296c337 100644
--- a/main.py
+++ b/main.py
@@ -98,6 +98,25 @@ def vaddi(name):
             desc=f"Add {width}-bit elements in `a` and `imm`, save the result in `dst`.",
         )
 
+    @env.macro
+    def vaddwev(wide, narrow, narrow2=None):
+        wide_width = widths[wide]
+        if narrow2 is None:
+            narrow2 = narrow
+            inst_suffix = ""
+            intrinsic_suffix = ""
+        else:
+            inst_suffix = f".{narrow2}"
+            intrinsic_suffix = f"_{narrow2}"
+        narrow_width = widths[narrow]
+        signedness = signednesses[narrow]
+        signedness2 = signednesses[narrow2]
+        return instruction(
+            intrinsic=f"__m128i __lsx_vaddwev_{wide}_{narrow}{intrinsic_suffix} (__m128i a, __m128i b)",
+            instr=f"vaddwev.{wide}.{narrow}{inst_suffix} vr, vr, vr",
+            desc=f"Add even-positioned {signedness} {narrow_width}-bit elements in `a` and {signedness2} elements in `b`, save the {wide_width}-bit result in `dst`.",
+        )
+
     @env.macro
     def vshuf_hwd(name):
         width = widths[name]