(floating_exact_log2): Initialize r1.

From-SVN: r3996

diff --git a/gcc/config/m68k/m68k.c b/gcc/config/m68k/m68k.c
index 8939e98535bccf8b87ecc3ae5cca83d936e89470..08b73bf6a3267f5cff3abeb168b612d7738f1f2f 100644 (file)
--- a/gcc/config/m68k/m68k.c
+++ b/gcc/config/m68k/m68k.c
@@ -1356,6 +1356,7 @@ floating_exact_log2 (x)
   if (REAL_VALUES_LESS (r, dconst0))
     return 0;
 
+  r1 = dconst1;
   i = 0;
   while (REAL_VALUES_LESS (r1, r))
     {