loop.c (basic_induction_var): Don't call convert_modes if mode classes are different.

	* loop.c (basic_induction_var): Don't call convert_modes if mode
	classes are different.

	* gcc.c-torture/compile/20020309-2.c: New test.

From-SVN: r50721

1 files changed, 4 insertions, 3 deletions

diff --git a/gcc/loop.c b/gcc/loop.c
index 3108b03..6617608 100644
--- a/gcc/loop.c
+++ b/gcc/loop.c
@@ -6214,10 +6214,11 @@ basic_induction_var (loop, x, mode, dest_reg, p, inc_val, mult_val, location)
     case CONST:
       /* convert_modes aborts if we try to convert to or from CCmode, so just
          exclude that case.  It is very unlikely that a condition code value
-	 would be a useful iterator anyways.  */
+	 would be a useful iterator anyways.  convert_modes aborts if we try to
+	 convert a float mode to non-float or vice versa too.  */
       if (loop->level == 1
-	  && GET_MODE_CLASS (mode) != MODE_CC
-	  && GET_MODE_CLASS (GET_MODE (dest_reg)) != MODE_CC)
+	  && GET_MODE_CLASS (mode) == GET_MODE_CLASS (GET_MODE (dest_reg))
+	  && GET_MODE_CLASS (mode) != MODE_CC)
 	{
 	  /* Possible bug here?  Perhaps we don't know the mode of X.  */
 	  *inc_val = convert_modes (GET_MODE (dest_reg), mode, x, 0);