[ARC] Fix tst_bitfield_tst pattern.

gcc/
2017-03-13  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.md (*tst_bitfield_tst): Fix pattern.

gcc/testsuite
2017-03-13  Claudiu Zissulescu  <claziss@synopsys.com>

	* testsuite/gcc.target/arc/bitfield.c: New file.

From-SVN: r246090

gcc/ChangeLog

 2017-03-13  Claudiu Zissulescu  <claziss@synopsys.com>
 
+	* config/arc/arc.md (*tst_bitfield_tst): Fix pattern.
+
+2017-03-13  Claudiu Zissulescu  <claziss@synopsys.com>
+
 	* config/arc/arc.c (arc_output_addsi): Emit code density adds.
 	* config/arc/arc.md (cpu_facility): Add cd variant.
 	(*movqi_insn): Add code density variant.

gcc/config/arc/arc.md

@@ -901,7 +901,7 @@
    && (INTVAL (operands[3]) + INTVAL (operands[2]) <= 11
        || (INTVAL (operands[3]) <= 11
 	   && INTVAL (operands[3]) + INTVAL (operands[2]) == 32))"
-  "tst %1,(1<<%2)-1<<%3"
+  "tst %1,((1<<%2)-1)<<%3"
   [(set_attr "type" "compare")
    (set_attr "cond" "set_zn")
    (set_attr "length" "4")])

gcc/testsuite/ChangeLog

 2017-03-13  Claudiu Zissulescu  <claziss@synopsys.com>
 
+	* testsuite/gcc.target/arc/bitfield.c: New file.
+
+2017-03-13  Claudiu Zissulescu  <claziss@synopsys.com>
+
 	* testsuite/gcc.target/arc/pr9001090948.c: New file.
 
 2017-03-11  Segher Boessenkool  <segher@kernel.crashing.org>

gcc/testsuite/gcc.target/arc/bitfield.c

+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+#include <stdlib.h>
+
+struct ubifs_budget_req {
+  unsigned int fast:7;
+  unsigned int new_ino_d:13;
+};
+
+int printf(const char *format, ...);
+
+void __attribute__ ((noinline))
+fff(struct ubifs_budget_req *req)
+{
+  if (req->new_ino_d & 7)
+    abort ();
+}
+
+int main (void)
+{
+  struct ubifs_budget_req req = {
+    .fast = 8,
+    .new_ino_d = 0,
+  };
+  fff(&req);
+  return 0;
+}