diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-prefetch.c | 7 |
2 files changed, 12 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 43eff0c..cc2aada 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2007-04-11 Zdenek Dvorak <dvorakz@suse.cz> + + * tree-ssa-loop-prefetch.c (loop_prefetch_arrays): Ignore + cold loops. + 2007-04-14 Andrew Pinski <andrew_pinski@playstation.sony.com> PR c/31520 diff --git a/gcc/tree-ssa-loop-prefetch.c b/gcc/tree-ssa-loop-prefetch.c index a0d70cc..35e8021 100644 --- a/gcc/tree-ssa-loop-prefetch.c +++ b/gcc/tree-ssa-loop-prefetch.c @@ -947,6 +947,13 @@ loop_prefetch_arrays (struct loop *loop) struct tree_niter_desc desc; bool unrolled = false; + if (!maybe_hot_bb_p (loop->header)) + { + if (dump_file && (dump_flags & TDF_DETAILS)) + fprintf (dump_file, " ignored (cold area)\n"); + return false; + } + /* Step 1: gather the memory references. */ refs = gather_memory_references (loop); |