diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc
index 4ca7e547..fe66cbd5 100644
--- a/src/frontend/A64/decoder/a64.inc
+++ b/src/frontend/A64/decoder/a64.inc
@@ -703,7 +703,7 @@ INST(RSUBHN,                 "RSUBHN, RSUBHN2",                           "0Q101
 INST(SHADD,                  "SHADD",                                     "0Q001110zz1mmmmm000001nnnnnddddd")
 //INST(SQADD_2,                "SQADD",                                     "0Q001110zz1mmmmm000011nnnnnddddd")
 //INST(SRHADD,                 "SRHADD",                                    "0Q001110zz1mmmmm000101nnnnnddddd")
-//INST(SHSUB,                  "SHSUB",                                     "0Q001110zz1mmmmm001001nnnnnddddd")
+INST(SHSUB,                  "SHSUB",                                     "0Q001110zz1mmmmm001001nnnnnddddd")
 //INST(SQSUB_2,                "SQSUB",                                     "0Q001110zz1mmmmm001011nnnnnddddd")
 INST(CMGT_reg_2,             "CMGT (register)",                           "0Q001110zz1mmmmm001101nnnnnddddd")
 INST(CMGE_reg_2,             "CMGE (register)",                           "0Q001110zz1mmmmm001111nnnnnddddd")
diff --git a/src/frontend/A64/translate/impl/simd_three_same.cpp b/src/frontend/A64/translate/impl/simd_three_same.cpp
index b5aaa52e..5a29a11e 100644
--- a/src/frontend/A64/translate/impl/simd_three_same.cpp
+++ b/src/frontend/A64/translate/impl/simd_three_same.cpp
@@ -199,6 +199,22 @@ bool TranslatorVisitor::SHADD(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
     return true;
 }
 
+bool TranslatorVisitor::SHSUB(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
+    if (size == 0b11) {
+        return ReservedValue();
+    }
+
+    const size_t datasize = Q ? 128 : 64;
+    const size_t esize = 8 << size.ZeroExtend();
+
+    const IR::U128 operand1 = V(datasize, Vn);
+    const IR::U128 operand2 = V(datasize, Vm);
+    const IR::U128 result = ir.VectorHalvingSubSigned(esize, operand1, operand2);
+
+    V(datasize, Vd, result);
+    return true;
+}
+
 bool TranslatorVisitor::UHADD(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
     if (size == 0b11) {
         return ReservedValue();