diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 3093cb5..27dddaf 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -10525,6 +10525,57 @@
    (set (match_dup 0) (match_op_dup 1
                         [(and:SI (match_dup 3) (match_dup 2))
 			 (const_int 0)]))])
+
+;; Split ((A | B) ^ C) ^ D as (X & ~Y) ^ Z.
+(define_split
+  [(set (match_operand:SWI48 0 "register_operand")
+	(xor:SWI48
+	   (xor:SWI48
+	      (ior:SWI48 (match_operand:SWI48 1 "register_operand")
+			 (match_operand:SWI48 2 "nonimmediate_operand"))
+	      (match_operand:SWI48 3 "nonimmediate_operand"))
+	   (match_operand:SWI48 4 "nonimmediate_operand")))
+   (clobber (reg:CC FLAGS_REG))]
+  "TARGET_BMI
+   && ix86_pre_reload_split ()
+   && (rtx_equal_p (operands[1], operands[3])
+       || rtx_equal_p (operands[1], operands[4])
+       || (REG_P (operands[2])
+	   && (rtx_equal_p (operands[2], operands[3])
+	       || rtx_equal_p (operands[2], operands[4]))))"
+  [(parallel
+      [(set (match_dup 5) (and:SWI48 (not:SWI48 (match_dup 6)) (match_dup 7)))
+       (clobber (reg:CC FLAGS_REG))])
+   (parallel
+      [(set (match_dup 0) (xor:SWI48 (match_dup 5) (match_dup 8)))
+       (clobber (reg:CC FLAGS_REG))])]
+{
+  operands[5] = gen_reg_rtx (<MODE>mode);
+  if (rtx_equal_p (operands[1], operands[3]))
+    {
+      operands[6] = operands[1];
+      operands[7] = operands[2];
+      operands[8] = operands[4];
+    }
+  else if (rtx_equal_p (operands[1], operands[4]))
+    {
+      operands[6] = operands[1];
+      operands[7] = operands[2];
+      operands[8] = operands[3];
+    }
+  else if (rtx_equal_p (operands[2], operands[3]))
+    {
+      operands[6] = operands[2];
+      operands[7] = operands[1];
+      operands[8] = operands[4];
+    }
+  else
+    {
+      operands[6] = operands[2];
+      operands[7] = operands[1];
+      operands[8] = operands[3];
+    }
+})
 
 ;; Logical inclusive and exclusive OR instructions
 
diff --git a/gcc/testsuite/gcc.target/i386/bmi-andn-4.c b/gcc/testsuite/gcc.target/i386/bmi-andn-4.c
new file mode 100644
index 0000000..fb89529
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/bmi-andn-4.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mbmi" } */
+
+int f(int a, int b, int c)
+{
+    return (a ^ b) ^ (a | c);
+}
+
+/* { dg-final { scan-assembler "andn\[ \\t\]+" } } */