re PR target/43636 (ICE in extract_insn, at recog.c:2103)

	PR target/43636
	* builtins.c (expand_movstr): Use a temporary pseudo instead
	of target even when target is not NULL and not const0_rtx, but
	fails movstr predicate.
	* config/m32c/blkmov.md (movstr): Add predicate to first operand.

	* gcc.c-torture/compile/pr43636.c: New test.

From-SVN: r159972

1 files changed, 5 insertions, 4 deletions

diff --git a/gcc/builtins.c b/gcc/builtins.c
index e16240b..e57449dd 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -3560,6 +3560,7 @@ expand_movstr (tree dest, tree src, rtx target, int endp)
 
   dest_mem = get_memory_rtx (dest, NULL);
   src_mem = get_memory_rtx (src, NULL);
+  data = insn_data + CODE_FOR_movstr;
   if (!endp)
     {
       target = force_reg (Pmode, XEXP (dest_mem, 0));
@@ -3568,18 +3569,18 @@ expand_movstr (tree dest, tree src, rtx target, int endp)
     }
   else
     {
-      if (target == 0 || target == const0_rtx)
+      if (target == 0
+	  || target == const0_rtx
+	  || ! (*data->operand[0].predicate) (target, Pmode))
 	{
 	  end = gen_reg_rtx (Pmode);
-	  if (target == 0)
+	  if (target != const0_rtx)
 	    target = end;
 	}
       else
 	end = target;
     }
 
-  data = insn_data + CODE_FOR_movstr;
-
   if (data->operand[0].mode != VOIDmode)
     end = gen_lowpart (data->operand[0].mode, end);