diff --git a/include/llvm/IntrinsicsX86.td b/include/llvm/IntrinsicsX86.td
index 11cfe977ebc..cf36dd1820c 100644
--- a/include/llvm/IntrinsicsX86.td
+++ b/include/llvm/IntrinsicsX86.td
@@ -877,6 +877,26 @@ let TargetPrefix = "x86" in { // All intrinsics start with "llvm.x86.".
                     [IntrNoMem]>;
 }
 
+//===----------------------------------------------------------------------===//
+// SSE4.2
+
+// Miscellaneous
+// CRC Instruction
+let TargetPrefix = "x86" in { // All intrinsics start with "llvm.x86.".
+  def int_x86_sse42_crc32_8         : GCCBuiltin<"__builtin_ia32_crc32qi">,
+          Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i8_ty],
+                    [IntrNoMem]>;
+  def int_x86_sse42_crc32_16         : GCCBuiltin<"__builtin_ia32_crc32hi">,
+          Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i8_ty],
+                    [IntrNoMem]>;
+  def int_x86_sse42_crc32_32         : GCCBuiltin<"__builtin_ia32_crc32si">,
+          Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i8_ty],
+                    [IntrNoMem]>;
+  def int_x86_sse42_crc32_64         : GCCBuiltin<"__builtin_ia32_crc32di">,
+          Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i8_ty],
+                    [IntrNoMem]>;
+}
+
 //===----------------------------------------------------------------------===//
 // MMX