+(define_expand "xbegin"
+ [(set (match_operand:SI 0 "register_operand")
+ (unspec_volatile:SI [(match_dup 1)] UNSPECV_XBEGIN))]
+ "TARGET_RTM"
+{
+ rtx label = gen_label_rtx ();
+
+ operands[1] = force_reg (SImode, constm1_rtx);
+
+ emit_jump_insn (gen_xbegin_1 (operands[0], operands[1], label));
+
+ emit_label (label);
+ LABEL_NUSES (label) = 1;
+
+ DONE;
+})
+
+(define_insn "xbegin_1"
+ [(set (pc)
+ (if_then_else (ne (unspec [(const_int 0)] UNSPEC_XBEGIN_ABORT)
+ (const_int 0))
+ (label_ref (match_operand 2))
+ (pc)))
+ (set (match_operand:SI 0 "register_operand" "=a")
+ (unspec_volatile:SI [(match_operand:SI 1 "register_operand" "0")]
+ UNSPECV_XBEGIN))]
+ "TARGET_RTM"
+ "xbegin\t%l2"
+ [(set_attr "type" "other")
+ (set_attr "length" "6")])
+
+(define_insn "xend"
+ [(unspec_volatile [(const_int 0)] UNSPECV_XEND)]
+ "TARGET_RTM"
+ "xend"
+ [(set_attr "type" "other")
+ (set_attr "length" "3")])
+
+(define_insn "xabort"
+ [(unspec_volatile [(match_operand:SI 0 "const_0_to_255_operand" "n")]
+ UNSPECV_XABORT)]
+ "TARGET_RTM"
+ "xabort\t%0"
+ [(set_attr "type" "other")
+ (set_attr "length" "3")])
+
+(define_expand "xtest"
+ [(set (match_operand:QI 0 "register_operand")
+ (unspec_volatile:QI [(const_int 0)] UNSPECV_XTEST))]
+ "TARGET_RTM"
+{
+ emit_insn (gen_xtest_1 ());
+
+ ix86_expand_setcc (operands[0], EQ,
+ gen_rtx_REG (CCZmode, FLAGS_REG), const0_rtx);
+ DONE;
+})
+
+(define_insn "xtest_1"
+ [(set (reg:CCZ FLAGS_REG)
+ (unspec_volatile:CCZ [(const_int 0)] UNSPECV_XTEST))]
+ "TARGET_RTM"
+ "xtest"
+ [(set_attr "type" "other")
+ (set_attr "length" "3")])
+