re PR target/54892 (, ICE in extract_insn, at recog.c:2123)

	gcc/ChangeLog
	PR target/54892
	* config/arm/arm.c (arm_expand_compare_and_swap): Use SImode to make
	sure the mode is correct when falling through from above cases.

	gcc/testsuite/ChangeLog
	PR target/54892
	* gcc.target/arm/pr54892.c: New.

From-SVN: r192609

gcc/ChangeLog

+2012-10-19  Zhenqiang Chen <zhenqiang.chen@linaro.org>
+
+	PR target/54892
+	* config/arm/arm.c (arm_expand_compare_and_swap): Use SImode to make
+	sure the mode is correct when falling through from above cases.
+
 2012-10-19  Bin Cheng  <bin.cheng@arm.com>
 
 	* common.opt (flag_ira_hoist_pressure): New.

gcc/config/arm/arm.c

@@ -25447,8 +25447,8 @@ arm_expand_compare_and_swap (rtx operands[])
     case SImode:
       /* Force the value into a register if needed.  We waited until after
 	 the zero-extension above to do this properly.  */
-      if (!arm_add_operand (oldval, mode))
-	oldval = force_reg (mode, oldval);
+      if (!arm_add_operand (oldval, SImode))
+	oldval = force_reg (SImode, oldval);
       break;
 
     case DImode:

gcc/testsuite/ChangeLog

+2012-10-19  Zhenqiang Chen <zhenqiang.chen@linaro.org>
+
+	PR target/54892
+	* gcc.target/arm/pr54892.c: New.
+
 2012-10-19  Bin Cheng  <bin.cheng@arm.com>
 
 	* testsuite/gcc.dg/hoist-register-pressure.c: New test.

gcc/testsuite/gcc.target/arm/pr54892.c

+/* { dg-do compile } */
+
+int set_role(unsigned char role_id, short m_role)
+{
+  return __sync_bool_compare_and_swap(&m_role, -1, role_id);
+}
+