diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td
index 06ae2a70b09..ecc32ec9fe7 100644
--- a/lib/Target/X86/X86InstrSSE.td
+++ b/lib/Target/X86/X86InstrSSE.td
@@ -613,12 +613,36 @@ multiclass sse12_cvt<bits<8> opc, RegisterClass SrcRC, RegisterClass DstRC,
                         [(set DstRC:$dst, (OpNode (ld_frag addr:$src)))]>;
 }
 
+multiclass sse12_cvt_avx<bits<8> opc, RegisterClass SrcRC, RegisterClass DstRC,
+                     SDNode OpNode, X86MemOperand x86memop, PatFrag ld_frag,
+                     string asm> {
+  def rr : SI<opc, MRMSrcReg, (outs DstRC:$dst), (ins DstRC:$src1, SrcRC:$src),
+              asm, []>;
+  def rm : SI<opc, MRMSrcMem, (outs DstRC:$dst),
+              (ins DstRC:$src1, x86memop:$src), asm, []>;
+}
+
 // Conversion instructions
+let isAsmParserOnly = 1 in {
+defm VCVTTSS2SI : sse12_cvt<0x2C, FR32, GR32, fp_to_sint, f32mem, loadf32,
+                      "cvttss2si\t{$src, $dst|$dst, $src}">, XS, VEX;
+defm VCVTTSD2SI : sse12_cvt<0x2C, FR64, GR32, fp_to_sint, f64mem, loadf64,
+                      "cvttsd2si\t{$src, $dst|$dst, $src}">, XD, VEX;
+}
 defm CVTTSS2SI : sse12_cvt<0x2C, FR32, GR32, fp_to_sint, f32mem, loadf32,
                       "cvttss2si\t{$src, $dst|$dst, $src}">, XS;
 defm CVTTSD2SI : sse12_cvt<0x2C, FR64, GR32, fp_to_sint, f64mem, loadf64,
                       "cvttsd2si\t{$src, $dst|$dst, $src}">, XD;
 
+
+let isAsmParserOnly = 1 in {
+defm VCVTSI2SS  : sse12_cvt_avx<0x2A, GR32, FR32, sint_to_fp, i32mem, loadi32,
+                      "cvtsi2ss\t{$src, $src1, $dst|$dst, $src1, $src}">, XS,
+                      VEX_4V;
+defm VCVTSI2SD  : sse12_cvt_avx<0x2A, GR32, FR64, sint_to_fp, i32mem, loadi32,
+                      "cvtsi2sd\t{$src, $src1, $dst|$dst, $src1, $src}">, XD,
+                      VEX_4V;
+}
 defm CVTSI2SS  : sse12_cvt<0x2A, GR32, FR32, sint_to_fp, i32mem, loadi32,
                       "cvtsi2ss\t{$src, $dst|$dst, $src}">, XS;
 defm CVTSI2SD  : sse12_cvt<0x2A, GR32, FR64, sint_to_fp, i32mem, loadi32,
diff --git a/test/MC/AsmParser/X86/x86_32-encoding.s b/test/MC/AsmParser/X86/x86_32-encoding.s
index 992a2ee0161..5cfbaf43015 100644
--- a/test/MC/AsmParser/X86/x86_32-encoding.s
+++ b/test/MC/AsmParser/X86/x86_32-encoding.s
@@ -10686,3 +10686,35 @@
 // CHECK: encoding: [0xc5,0xf9,0x2f,0x10]
           vcomisd  (%eax), %xmm2
 
+// CHECK: vcvttss2si  %xmm1, %eax
+// CHECK: encoding: [0xc5,0xfa,0x2c,0xc1]
+          vcvttss2si  %xmm1, %eax
+
+// CHECK: vcvttss2si  (%ecx), %eax
+// CHECK: encoding: [0xc5,0xfa,0x2c,0x01]
+          vcvttss2si  (%ecx), %eax
+
+// CHECK: vcvtsi2ss  (%eax), %xmm1, %xmm2
+// CHECK: encoding: [0xc5,0xf2,0x2a,0x10]
+          vcvtsi2ss  (%eax), %xmm1, %xmm2
+
+// CHECK: vcvtsi2ss  (%eax), %xmm1, %xmm2
+// CHECK: encoding: [0xc5,0xf2,0x2a,0x10]
+          vcvtsi2ss  (%eax), %xmm1, %xmm2
+
+// CHECK: vcvttsd2si  %xmm1, %eax
+// CHECK: encoding: [0xc5,0xfb,0x2c,0xc1]
+          vcvttsd2si  %xmm1, %eax
+
+// CHECK: vcvttsd2si  (%ecx), %eax
+// CHECK: encoding: [0xc5,0xfb,0x2c,0x01]
+          vcvttsd2si  (%ecx), %eax
+
+// CHECK: vcvtsi2sd  (%eax), %xmm1, %xmm2
+// CHECK: encoding: [0xc5,0xf3,0x2a,0x10]
+          vcvtsi2sd  (%eax), %xmm1, %xmm2
+
+// CHECK: vcvtsi2sd  (%eax), %xmm1, %xmm2
+// CHECK: encoding: [0xc5,0xf3,0x2a,0x10]
+          vcvtsi2sd  (%eax), %xmm1, %xmm2
+
diff --git a/test/MC/AsmParser/X86/x86_64-encoding.s b/test/MC/AsmParser/X86/x86_64-encoding.s
index ef842c80ae1..543a0a6921b 100644
--- a/test/MC/AsmParser/X86/x86_64-encoding.s
+++ b/test/MC/AsmParser/X86/x86_64-encoding.s
@@ -742,4 +742,28 @@ pshufb	CPI1_0(%rip), %xmm1
 // CHECK: encoding: [0xc5,0x79,0x2f,0x20]
           vcomisd  (%rax), %xmm12
 
+// CHECK: vcvttss2si  (%rcx), %eax
+// CHECK: encoding: [0xc5,0xfa,0x2c,0x01]
+          vcvttss2si  (%rcx), %eax
+
+// CHECK: vcvtsi2ss  (%rax), %xmm11, %xmm12
+// CHECK: encoding: [0xc5,0x22,0x2a,0x20]
+          vcvtsi2ss  (%rax), %xmm11, %xmm12
+
+// CHECK: vcvtsi2ss  (%rax), %xmm11, %xmm12
+// CHECK: encoding: [0xc5,0x22,0x2a,0x20]
+          vcvtsi2ss  (%rax), %xmm11, %xmm12
+
+// CHECK: vcvttsd2si  (%rcx), %eax
+// CHECK: encoding: [0xc5,0xfb,0x2c,0x01]
+          vcvttsd2si  (%rcx), %eax
+
+// CHECK: vcvtsi2sd  (%rax), %xmm11, %xmm12
+// CHECK: encoding: [0xc5,0x23,0x2a,0x20]
+          vcvtsi2sd  (%rax), %xmm11, %xmm12
+
+// CHECK: vcvtsi2sd  (%rax), %xmm11, %xmm12
+// CHECK: encoding: [0xc5,0x23,0x2a,0x20]
+          vcvtsi2sd  (%rax), %xmm11, %xmm12
+