diff options
Diffstat (limited to 'gcc/loop-invariant.c')
| -rw-r--r-- | gcc/loop-invariant.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/loop-invariant.c b/gcc/loop-invariant.c index 8b8345fe5fd..82e18297e20 100644 --- a/gcc/loop-invariant.c +++ b/gcc/loop-invariant.c @@ -1,5 +1,6 @@ /* RTL-level loop invariant motion. - Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. + Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 + Free Software Foundation, Inc. This file is part of GCC. @@ -52,6 +53,7 @@ along with GCC; see the file COPYING3. If not see #include "df.h" #include "hashtab.h" #include "except.h" +#include "params.h" /* The data stored for the loop. */ @@ -1345,7 +1347,10 @@ move_loop_invariants (void) /* Process the loops, innermost first. */ FOR_EACH_LOOP (li, loop, LI_FROM_INNERMOST) { - move_single_loop_invariants (loop); + /* move_single_loop_invariants for very large loops + is time consuming and might need a lot of memory. */ + if (loop->num_nodes <= (unsigned) LOOP_INVARIANT_MAX_BBS_IN_LOOP) + move_single_loop_invariants (loop); } FOR_EACH_LOOP (li, loop, 0) |