[Bug middle-end/58555] [4.9 Regression] Floating point exception in want_inline_self_recursive_call_p

[octoploid at yandex dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58555

--- Comment #8 from octoploid at yandex dot com ---
The following patch seems to fix the issue:

diff --git a/gcc/ipa-inline.c b/gcc/ipa-inline.c
index f4cb72a9c2b0..b69d4d96176a 100644
--- a/gcc/ipa-inline.c
+++ b/gcc/ipa-inline.c
@@ -698,7 +698,7 @@ want_inline_self_recursive_call_p (struct cgraph_edge
*edge,
          reason = "profile of recursive call is too large";
          want_inline = false;
        }
-      if (!max_count
+      if (!max_count && caller_freq
          && (edge->frequency * CGRAPH_FREQ_BASE / caller_freq
              >= max_prob))
        {
@@ -731,7 +731,7 @@ want_inline_self_recursive_call_p (struct cgraph_edge
*edge,
          reason = "profile of recursive call is too small";
          want_inline = false;
        }
-      else if (!max_count
+      else if (!max_count && caller_freq
               && (edge->frequency * 100 / caller_freq
                   <= PARAM_VALUE (PARAM_MIN_INLINE_RECURSIVE_PROBABILITY)))