[ARM] Fix PR 65955: Do not take REGNO on non-REG operand in movcond_addsi

	PR target/65955
	* config/arm/arm.md (movcond_addsi): Check that operands[2] is a
	REG before taking its REGNO.

From-SVN: r223049

gcc/ChangeLog

+2015-05-12  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	PR target/65955
+	* config/arm/arm.md (movcond_addsi): Check that operands[2] is a
+	REG before taking its REGNO.
+
 2015-05-12  Thomas Preud'homme  <thomas.preudhomme@arm.com>
 
 	* combine.c i(set_nonzero_bits_and_sign_copies): Split code updating

gcc/config/arm/arm.md

@@ -9323,7 +9323,7 @@
     enum rtx_code rc = GET_CODE (operands[5]);
     operands[6] = gen_rtx_REG (mode, CC_REGNUM);
     gcc_assert (!(mode == CCFPmode || mode == CCFPEmode));
-    if (REGNO (operands[2]) != REGNO (operands[0]))
+    if (!REG_P (operands[2]) || REGNO (operands[2]) != REGNO (operands[0]))
       rc = reverse_condition (rc);
     else
       std::swap (operands[1], operands[2]);