re PR inline-asm/84742 (internal compiler error: in process_alt_operands, at…

re PR inline-asm/84742 (internal compiler error: in process_alt_operands, at lra-constraints.c:2112)

	PR inline-asm/84742
	* recog.c (asm_operand_ok): Return 0 if multi-character constraint
	has ',' character inside of it.

	* gcc.target/i386/pr84742-1.c: New test.
	* gcc.target/i386/pr84742-2.c: New test.

From-SVN: r258369

gcc/ChangeLog

+2018-03-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR inline-asm/84742
+	* recog.c (asm_operand_ok): Return 0 if multi-character constraint
+	has ',' character inside of it.
+
 2018-03-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	PR target/84748

gcc/recog.c

@@ -1825,7 +1825,7 @@ asm_operand_ok (rtx op, const char *constraint, const char **constraints)
       len = CONSTRAINT_LEN (c, constraint);
       do
 	constraint++;
-      while (--len && *constraint);
+      while (--len && *constraint && *constraint != ',');
       if (len)
 	return 0;
     }

gcc/testsuite/ChangeLog

+2018-03-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR inline-asm/84742
+	* gcc.target/i386/pr84742-1.c: New test.
+	* gcc.target/i386/pr84742-2.c: New test.
+
 2018-03-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	PR target/84748

gcc/testsuite/gcc.target/i386/pr84742-1.c

+/* PR inline-asm/84742 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+void 
+foo ()
+{
+  char b = 1;
+  asm volatile ("" : "+T,Y" (b));	/* { dg-error "impossible constraint in 'asm'" } */
+}

gcc/testsuite/gcc.target/i386/pr84742-2.c

+/* PR inline-asm/84742 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+void 
+foo ()
+{
+  char b = 1;
+  asm volatile ("" : "+gT,m" (b));	/* { dg-error "impossible constraint in 'asm'" } */
+}