diff --git a/compiler/utils/x86/assembler_x86.cc b/compiler/utils/x86/assembler_x86.cc
index ea160c8..42c2541 100644
--- a/compiler/utils/x86/assembler_x86.cc
+++ b/compiler/utils/x86/assembler_x86.cc
@@ -913,6 +913,78 @@
 }
 
 
+void X86Assembler::paddusb(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0xDC);
+  EmitXmmRegisterOperand(dst, src);
+}
+
+
+void X86Assembler::paddsb(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0xEC);
+  EmitXmmRegisterOperand(dst, src);
+}
+
+
+void X86Assembler::paddusw(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0xDD);
+  EmitXmmRegisterOperand(dst, src);
+}
+
+
+void X86Assembler::paddsw(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0xED);
+  EmitXmmRegisterOperand(dst, src);
+}
+
+
+void X86Assembler::psubusb(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0xD8);
+  EmitXmmRegisterOperand(dst, src);
+}
+
+
+void X86Assembler::psubsb(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0xE8);
+  EmitXmmRegisterOperand(dst, src);
+}
+
+
+void X86Assembler::psubusw(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0xD9);
+  EmitXmmRegisterOperand(dst, src);
+}
+
+
+void X86Assembler::psubsw(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0xE9);
+  EmitXmmRegisterOperand(dst, src);
+}
+
+
 void X86Assembler::cvtsi2ss(XmmRegister dst, Register src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xF3);
diff --git a/compiler/utils/x86/assembler_x86.h b/compiler/utils/x86/assembler_x86.h
index a085677..22eaedc 100644
--- a/compiler/utils/x86/assembler_x86.h
+++ b/compiler/utils/x86/assembler_x86.h
@@ -449,6 +449,15 @@
   void paddq(XmmRegister dst, XmmRegister src);
   void psubq(XmmRegister dst, XmmRegister src);
 
+  void paddusb(XmmRegister dst, XmmRegister src);
+  void paddsb(XmmRegister dst, XmmRegister src);
+  void paddusw(XmmRegister dst, XmmRegister src);
+  void paddsw(XmmRegister dst, XmmRegister src);
+  void psubusb(XmmRegister dst, XmmRegister src);
+  void psubsb(XmmRegister dst, XmmRegister src);
+  void psubusw(XmmRegister dst, XmmRegister src);
+  void psubsw(XmmRegister dst, XmmRegister src);
+
   void cvtsi2ss(XmmRegister dst, Register src);
   void cvtsi2sd(XmmRegister dst, Register src);
 
diff --git a/compiler/utils/x86/assembler_x86_test.cc b/compiler/utils/x86/assembler_x86_test.cc
index 2fd1b27..8f72db7 100644
--- a/compiler/utils/x86/assembler_x86_test.cc
+++ b/compiler/utils/x86/assembler_x86_test.cc
@@ -600,6 +600,38 @@
   DriverStr(RepeatFF(&x86::X86Assembler::psubq, "psubq %{reg2}, %{reg1}"), "psubq");
 }
 
+TEST_F(AssemblerX86Test, PAddUSB) {
+  DriverStr(RepeatFF(&x86::X86Assembler::paddusb, "paddusb %{reg2}, %{reg1}"), "paddusb");
+}
+
+TEST_F(AssemblerX86Test, PAddSB) {
+  DriverStr(RepeatFF(&x86::X86Assembler::paddsb, "paddsb %{reg2}, %{reg1}"), "paddsb");
+}
+
+TEST_F(AssemblerX86Test, PAddUSW) {
+  DriverStr(RepeatFF(&x86::X86Assembler::paddusw, "paddusw %{reg2}, %{reg1}"), "paddusw");
+}
+
+TEST_F(AssemblerX86Test, PAddSW) {
+  DriverStr(RepeatFF(&x86::X86Assembler::psubsw, "psubsw %{reg2}, %{reg1}"), "psubsw");
+}
+
+TEST_F(AssemblerX86Test, PSubUSB) {
+  DriverStr(RepeatFF(&x86::X86Assembler::psubusb, "psubusb %{reg2}, %{reg1}"), "psubusb");
+}
+
+TEST_F(AssemblerX86Test, PSubSB) {
+  DriverStr(RepeatFF(&x86::X86Assembler::psubsb, "psubsb %{reg2}, %{reg1}"), "psubsb");
+}
+
+TEST_F(AssemblerX86Test, PSubUSW) {
+  DriverStr(RepeatFF(&x86::X86Assembler::psubusw, "psubusw %{reg2}, %{reg1}"), "psubusw");
+}
+
+TEST_F(AssemblerX86Test, PSubSW) {
+  DriverStr(RepeatFF(&x86::X86Assembler::psubsw, "psubsw %{reg2}, %{reg1}"), "psubsw");
+}
+
 TEST_F(AssemblerX86Test, XorPD) {
   DriverStr(RepeatFF(&x86::X86Assembler::xorpd, "xorpd %{reg2}, %{reg1}"), "xorpd");
 }
diff --git a/compiler/utils/x86_64/assembler_x86_64.cc b/compiler/utils/x86_64/assembler_x86_64.cc
index ff5a357..c6e16e7 100644
--- a/compiler/utils/x86_64/assembler_x86_64.cc
+++ b/compiler/utils/x86_64/assembler_x86_64.cc
@@ -1011,6 +1011,86 @@
 }
 
 
+void X86_64Assembler::paddusb(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitOptionalRex32(dst, src);
+  EmitUint8(0x0F);
+  EmitUint8(0xDC);
+  EmitXmmRegisterOperand(dst.LowBits(), src);
+}
+
+
+void X86_64Assembler::paddsb(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitOptionalRex32(dst, src);
+  EmitUint8(0x0F);
+  EmitUint8(0xEC);
+  EmitXmmRegisterOperand(dst.LowBits(), src);
+}
+
+
+void X86_64Assembler::paddusw(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitOptionalRex32(dst, src);
+  EmitUint8(0x0F);
+  EmitUint8(0xDD);
+  EmitXmmRegisterOperand(dst.LowBits(), src);
+}
+
+
+void X86_64Assembler::paddsw(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitOptionalRex32(dst, src);
+  EmitUint8(0x0F);
+  EmitUint8(0xED);
+  EmitXmmRegisterOperand(dst.LowBits(), src);
+}
+
+
+void X86_64Assembler::psubusb(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitOptionalRex32(dst, src);
+  EmitUint8(0x0F);
+  EmitUint8(0xD8);
+  EmitXmmRegisterOperand(dst.LowBits(), src);
+}
+
+
+void X86_64Assembler::psubsb(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitOptionalRex32(dst, src);
+  EmitUint8(0x0F);
+  EmitUint8(0xE8);
+  EmitXmmRegisterOperand(dst.LowBits(), src);
+}
+
+
+void X86_64Assembler::psubusw(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitOptionalRex32(dst, src);
+  EmitUint8(0x0F);
+  EmitUint8(0xD9);
+  EmitXmmRegisterOperand(dst.LowBits(), src);
+}
+
+
+void X86_64Assembler::psubsw(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitOptionalRex32(dst, src);
+  EmitUint8(0x0F);
+  EmitUint8(0xE9);
+  EmitXmmRegisterOperand(dst.LowBits(), src);
+}
+
+
 void X86_64Assembler::cvtsi2ss(XmmRegister dst, CpuRegister src) {
   cvtsi2ss(dst, src, false);
 }
diff --git a/compiler/utils/x86_64/assembler_x86_64.h b/compiler/utils/x86_64/assembler_x86_64.h
index 7a5fdb5..ab761fb 100644
--- a/compiler/utils/x86_64/assembler_x86_64.h
+++ b/compiler/utils/x86_64/assembler_x86_64.h
@@ -485,6 +485,15 @@
   void paddq(XmmRegister dst, XmmRegister src);
   void psubq(XmmRegister dst, XmmRegister src);
 
+  void paddusb(XmmRegister dst, XmmRegister src);
+  void paddsb(XmmRegister dst, XmmRegister src);
+  void paddusw(XmmRegister dst, XmmRegister src);
+  void paddsw(XmmRegister dst, XmmRegister src);
+  void psubusb(XmmRegister dst, XmmRegister src);
+  void psubsb(XmmRegister dst, XmmRegister src);
+  void psubusw(XmmRegister dst, XmmRegister src);
+  void psubsw(XmmRegister dst, XmmRegister src);
+
   void cvtsi2ss(XmmRegister dst, CpuRegister src);  // Note: this is the r/m32 version.
   void cvtsi2ss(XmmRegister dst, CpuRegister src, bool is64bit);
   void cvtsi2ss(XmmRegister dst, const Address& src, bool is64bit);
diff --git a/compiler/utils/x86_64/assembler_x86_64_test.cc b/compiler/utils/x86_64/assembler_x86_64_test.cc
index 6b1e53c..104e215 100644
--- a/compiler/utils/x86_64/assembler_x86_64_test.cc
+++ b/compiler/utils/x86_64/assembler_x86_64_test.cc
@@ -1282,6 +1282,38 @@
   DriverStr(RepeatFF(&x86_64::X86_64Assembler::psubq, "psubq %{reg2}, %{reg1}"), "psubq");
 }
 
+TEST_F(AssemblerX86_64Test, Paddusb) {
+  DriverStr(RepeatFF(&x86_64::X86_64Assembler::paddusb, "paddusb %{reg2}, %{reg1}"), "paddusb");
+}
+
+TEST_F(AssemblerX86_64Test, Paddsb) {
+  DriverStr(RepeatFF(&x86_64::X86_64Assembler::paddsb, "paddsb %{reg2}, %{reg1}"), "paddsb");
+}
+
+TEST_F(AssemblerX86_64Test, Paddusw) {
+  DriverStr(RepeatFF(&x86_64::X86_64Assembler::paddusw, "paddusw %{reg2}, %{reg1}"), "paddusw");
+}
+
+TEST_F(AssemblerX86_64Test, Paddsw) {
+  DriverStr(RepeatFF(&x86_64::X86_64Assembler::paddsw, "paddsw %{reg2}, %{reg1}"), "paddsw");
+}
+
+TEST_F(AssemblerX86_64Test, Psubusb) {
+  DriverStr(RepeatFF(&x86_64::X86_64Assembler::psubusb, "psubusb %{reg2}, %{reg1}"), "psubusb");
+}
+
+TEST_F(AssemblerX86_64Test, Psubsb) {
+  DriverStr(RepeatFF(&x86_64::X86_64Assembler::psubsb, "psubsb %{reg2}, %{reg1}"), "psubsb");
+}
+
+TEST_F(AssemblerX86_64Test, Psubusw) {
+  DriverStr(RepeatFF(&x86_64::X86_64Assembler::psubusw, "psubusw %{reg2}, %{reg1}"), "psubusw");
+}
+
+TEST_F(AssemblerX86_64Test, Psubsw) {
+  DriverStr(RepeatFF(&x86_64::X86_64Assembler::psubsw, "psubsw %{reg2}, %{reg1}"), "psubsw");
+}
+
 TEST_F(AssemblerX86_64Test, Cvtsi2ss) {
   DriverStr(RepeatFr(&x86_64::X86_64Assembler::cvtsi2ss, "cvtsi2ss %{reg2}, %{reg1}"), "cvtsi2ss");
 }