http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47892
--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-02-25
10:57:30 UTC ---
On trunk fixed with a patch as simple as
Index: gcc/tree-if-conv.c
===================================================================
*** gcc/tree-if-conv.c (revision 170466)
--- gcc/tree-if-conv.c (working copy)
*************** if_convertible_stmt_p (gimple stmt, VEC
*** 702,707 ****
--- 702,711 ----
case GIMPLE_ASSIGN:
return if_convertible_gimple_assign_stmt_p (stmt, refs);
+ case GIMPLE_CALL:
+ return (gimple_call_fndecl (stmt)
+ && (gimple_call_flags (stmt) & (ECF_PURE|ECF_CONST)));
+
default:
/* Don't know what to do with 'em so don't do anything. */
if (dump_file && (dump_flags & TDF_DETAILS))
