re PR inline-asm/84985 (ICE in match_reload, at lra-constraints.c:1068)

2018-03-29  Vladimir Makarov  <vmakarov@redhat.com>

	PR inline-asm/84985
	* lra-constraints.c (process_alt_operands): Move setting
	this_alternative_matches below.

2018-03-29  Vladimir Makarov  <vmakarov@redhat.com>

	PR inline-asm/84985
	* gcc.target/i386/pr84985.c: New.

From-SVN: r258961

gcc/ChangeLog

+2018-03-29  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR inline-asm/84985
+	* lra-constraints.c (process_alt_operands): Move setting
+	this_alternative_matches below.
+
 2018-03-29  Martin Liska  <mliska@suse.cz>
 
         PR lto/84995.

gcc/lra-constraints.c

@@ -2126,7 +2126,6 @@ process_alt_operands (int only_alternative)
 			&& curr_operand_mode[m] != curr_operand_mode[nop])
 		      break;
 		    
-		    this_alternative_matches = m;
 		    m_hregno = get_hard_regno (*curr_id->operand_loc[m], false);
 		    /* We are supposed to match a previous operand.
 		       If we do, we win if that one did.  If we do
@@ -2228,6 +2227,7 @@ process_alt_operands (int only_alternative)
 		    else
 		      did_match = true;
 
+		    this_alternative_matches = m;
 		    /* This can be fixed with reloads if the operand
 		       we are supposed to match can be fixed with
 		       reloads. */

gcc/testsuite/ChangeLog

+2018-03-29  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR inline-asm/84985
+	* gcc.target/i386/pr84985.c: New.
+
 2018-03-29  David Malcolm  <dmalcolm@redhat.com>
 
 	PR c++/85110

gcc/testsuite/gcc.target/i386/pr84985.c

+/* { dg-do compile } */
+/* { dg-options "-O0" } */
+int main() {
+  int a;
+  asm("" : "=d"(a) : "0"(a), "0ae"(&a));
+}