[Bug lto/49123] [4.6 Regression] FAIL: gcc.c-torture/execute/pr48973-[12].c

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49123

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.05.23 13:17:55
   Target Milestone|---                         |4.6.1
     Ever Confirmed|0                           |1

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-05-23 
13:17:55 UTC ---
Confirmed.  FRE does

 <bb 2>:
   s.f = 1;
-  D.2698_4 = s.f;
-  D.2699_5 = (unsigned int) D.2698_4;
-  if (D.2699_5 != 4294967295)
-    goto <bb 3>;
-  else
-    goto <bb 4>;
-
-<bb 3>:
+  D.2698_4 = 1;
+  D.2699_5 = 1;

so it fails to properly sign-extend D.2698_4.