re PR target/82098 (internal compiler error: in elimination_costs_in_insn, at…

re PR target/82098 (internal compiler error: in elimination_costs_in_insn, at reload1.c:3616, -march=i686)

	PR target/82098
	* config/i386/i386.md (*<btsc><mode>_mask): Add
	TARGET_USE_BT to insn constraint.
	(*btr<mode>_mask): Ditto.

From-SVN: r251682

gcc/ChangeLog

+2017-09-04  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/82098
+	* config/i386/i386.md (*<btsc><mode>_mask): Add
+	TARGET_USE_BT to insn constraint.
+	(*btr<mode>_mask): Ditto.
+
 2017-09-04  Wilco Dijkstra  <wdijkstr@arm.com>
 
 	* config/arm/arm.c (arm_legitimate_index_p): Add comment.

gcc/config/i386/i386.md

@@ -11033,8 +11033,9 @@
 		(match_operand:SI 2 "const_int_operand")) 0))
 	  (match_operand:SWI48 3 "register_operand")))
    (clobber (reg:CC FLAGS_REG))]
-  "(INTVAL (operands[2]) & (GET_MODE_BITSIZE (<MODE>mode)-1))
-   == GET_MODE_BITSIZE (<MODE>mode)-1
+  "TARGET_USE_BT
+   && (INTVAL (operands[2]) & (GET_MODE_BITSIZE (<MODE>mode)-1))
+      == GET_MODE_BITSIZE (<MODE>mode)-1
    && can_create_pseudo_p ()"
   "#"
   "&& 1"
@@ -11073,8 +11074,9 @@
 		(match_operand:SI 2 "const_int_operand")) 0))
 	  (match_operand:SWI48 3 "register_operand")))
    (clobber (reg:CC FLAGS_REG))]
-  "(INTVAL (operands[2]) & (GET_MODE_BITSIZE (<MODE>mode)-1))
-   == GET_MODE_BITSIZE (<MODE>mode)-1
+  "TARGET_USE_BT
+   && (INTVAL (operands[2]) & (GET_MODE_BITSIZE (<MODE>mode)-1))
+      == GET_MODE_BITSIZE (<MODE>mode)-1
    && can_create_pseudo_p ()"
   "#"
   "&& 1"