re PR target/65990 (ICE: in extract_insn, at recog.c:2341 (unrecognizable insn)…

re PR target/65990 (ICE: in extract_insn, at recog.c:2341 (unrecognizable insn) with -mmemcpy-strategy=rep_8byte:-1:noalign -m32 -mtune=btver2)

	PR target/65990
	* config/i386/i386.c (ix86_parse_stringop_strategy_string): Error out
	if rep_8byte stringop strategy was specified for 32-bit target.

testsuite/ChangeLog:

	PR target/65990
	* gcc.target/i386/pr65990.c: New test.

From-SVN: r222817

gcc/ChangeLog

+2015-05-05  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/65990
+	* config/i386/i386.c (ix86_parse_stringop_strategy_string): Error out
+	if rep_8byte stringop strategy was specified for 32-bit target.
+
 2015-05-05  Ilya Tocar  <ilya.tocar@intel.com>
 
 	PR target/65915

gcc/config/i386/i386.c

@@ -2988,6 +2988,17 @@ ix86_parse_stringop_strategy_string (char *strategy_str, bool is_memset)
           return;
         }
 
+      if ((stringop_alg) i == rep_prefix_8_byte
+	  && !TARGET_64BIT)
+	{
+	  /* rep; movq isn't available in 32-bit code.  */
+	  error ("stringop strategy name %s specified for option %s "
+		 "not supported for 32-bit code",
+                 alg_name,
+                 is_memset ? "-mmemset_strategy=" : "-mmemcpy_strategy=");
+	  return;
+	}
+
       input_ranges[n].max = maxs;
       input_ranges[n].alg = (stringop_alg) i;
       if (!strcmp (align, "align"))

gcc/testsuite/ChangeLog

+2015-05-05  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/65990
+	* gcc.target/i386/pr65990.c: New test.
+
 2015-05-05  Ilya Tocar  <ilya.tocar@intel.com>
 
 	PR target/65915

gcc/testsuite/gcc.target/i386/pr65990.c

+/* { dg-do compile } */
+/* { dg-options "-mtune=btver2 -mmemcpy-strategy=rep_8byte:-1:noalign" }
+
+/* { dg-error "stringop strategy name rep_8byte specified for option -mmemcpy_strategy= not supported for 32-bit code" "" { target ia32 } 0 } */
+
+struct U9
+{
+  unsigned a[9];
+};
+
+struct U9 u9;
+
+void
+foo ()
+{
+  u9 = (struct U9) {
+    .a = {
+      0xFF,
+      0xFF,
+      0xFF,
+      0xFF,
+      0xFF,
+      0xFF,
+      0xFF,
+      0xFF,
+      0xFF
+    }
+  };
+}