1 files changed, 56 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr27331.c b/gcc/testsuite/gcc.dg/pr27331.c
new file mode 100644
index 000000000..9b5c71e84
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr27331.c
@@ -0,0 +1,56 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-vectorize" } */
+
+struct funny_match
+{
+  int this, other;
+};
+
+typedef struct rtx {
+    int code;
+} *rtx;
+
+extern rtx recog_operand[];
+extern int which_alternative;
+extern int nalternatives;
+
+int
+constrain_operands (insn_code_num, strict)
+     int insn_code_num;
+     int strict;
+{
+  char *constraints[10];
+  struct funny_match funny_match[10];
+  register int c;
+  int funny_match_index;
+
+  which_alternative = 0;
+
+  while (which_alternative < nalternatives)
+    {
+      register int opno;
+      register char *p = constraints[opno];
+      int lose = 0;
+      funny_match_index = 0;
+
+      while (*p && (c = *p++) != ',')
+	funny_match[funny_match_index++].other = c - '0';
+
+      if ((((recog_operand[opno])->code) == 12))
+	lose = 1;
+
+      if (!lose)
+	{
+	  while (--funny_match_index >= 0)
+	    recog_operand[funny_match[funny_match_index].other]
+		    = recog_operand[funny_match[funny_match_index].this];
+	  return 1;
+	}
+      which_alternative++;
+    }
+
+  if (strict == 0)
+    return constrain_operands (insn_code_num, -1);
+  return 0;
+}
+