* config/i386/i386.c (decide_alg): Correctly handle

	maximum size of stringop algorithm.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211714 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 3 insertions, 3 deletions

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 33226a9f935..77d54e5bcb7 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -23832,7 +23832,7 @@ decide_alg (HOST_WIDE_INT count, HOST_WIDE_INT expected_size,
 {
   const struct stringop_algs * algs;
   bool optimize_for_speed;
-  int max = -1;
+  int max = 0;
   const struct processor_costs *cost;
   int i;
   bool any_alg_usable_p = false;
@@ -23870,7 +23870,7 @@ decide_alg (HOST_WIDE_INT count, HOST_WIDE_INT expected_size,
   /* If expected size is not known but max size is small enough
      so inline version is a win, set expected size into
      the range.  */
-  if (max > 1 && (unsigned HOST_WIDE_INT) max >= max_size
+  if (((max > 1 && (unsigned HOST_WIDE_INT) max >= max_size) || max == -1)
       && expected_size == -1)
     expected_size = min_size / 2 + max_size / 2;
 
@@ -23959,7 +23959,7 @@ decide_alg (HOST_WIDE_INT count, HOST_WIDE_INT expected_size,
             *dynamic_check = 128;
           return loop_1_byte;
         }
-      if (max == -1)
+      if (max <= 0)
 	max = 4096;
       alg = decide_alg (count, max / 2, min_size, max_size, memset,
 			zero_memset, dynamic_check, noalign);