[ia32] Supplement shift instructions for SIMD

src/ia32/assembler-ia32.h

Index: src/ia32/assembler-ia32.h
diff --git a/src/ia32/assembler-ia32.h b/src/ia32/assembler-ia32.h
index 44c1f50a872b487cbaec6d4bc49d4ea45e105882..6fd334723fcf97d4ccd3ea2ed7f314d076c7418a 100644
--- a/src/ia32/assembler-ia32.h
+++ b/src/ia32/assembler-ia32.h
@@ -1061,8 +1061,12 @@ class Assembler : public AssemblerBase {
 
   void ptest(XMMRegister dst, XMMRegister src);
 
+  void psllw(XMMRegister reg, int8_t shift);
   void pslld(XMMRegister reg, int8_t shift);
+  void psrlw(XMMRegister reg, int8_t shift);
   void psrld(XMMRegister reg, int8_t shift);
+  void psraw(XMMRegister reg, int8_t shift);
+  void psrad(XMMRegister reg, int8_t shift);
   void psllq(XMMRegister reg, int8_t shift);
   void psllq(XMMRegister dst, XMMRegister src);
   void psrlq(XMMRegister reg, int8_t shift);
@@ -1306,6 +1310,13 @@ class Assembler : public AssemblerBase {
   }
   void vss(byte op, XMMRegister dst, XMMRegister src1, const Operand& src2);
 
+  void vpsllw(XMMRegister dst, XMMRegister src, int8_t imm8);
+  void vpslld(XMMRegister dst, XMMRegister src, int8_t imm8);
+  void vpsrlw(XMMRegister dst, XMMRegister src, int8_t imm8);
+  void vpsrld(XMMRegister dst, XMMRegister src, int8_t imm8);
+  void vpsraw(XMMRegister dst, XMMRegister src, int8_t imm8);
+  void vpsrad(XMMRegister dst, XMMRegister src, int8_t imm8);
+
   // BMI instruction
   void andn(Register dst, Register src1, Register src2) {
     andn(dst, src1, Operand(src2));