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| author | Zdenek Dvorak <dvorakz@suse.cz> | 2007-04-15 05:36:25 +0200 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2007-04-15 03:36:25 +0000 |
| commit | 2732d76752f5be3ef0228823e61de8dbef6747d8 (patch) | |
| tree | 278968791535a84ce6ab905bcb8f15dad74d7d2c /gcc/tree-ssa-loop-prefetch.c | |
| parent | b4501dfdd2b424fb79113d18ef2511b9db47d162 (diff) | |
| download | gcc-2732d76752f5be3ef0228823e61de8dbef6747d8.zip gcc-2732d76752f5be3ef0228823e61de8dbef6747d8.tar.gz gcc-2732d76752f5be3ef0228823e61de8dbef6747d8.tar.bz2 | |
tree-ssa-loop-prefetch.c (loop_prefetch_arrays): Ignore cold loops.
* tree-ssa-loop-prefetch.c (loop_prefetch_arrays): Ignore
cold loops.
From-SVN: r123843
Diffstat (limited to 'gcc/tree-ssa-loop-prefetch.c')
| -rw-r--r-- | gcc/tree-ssa-loop-prefetch.c | 7 |
1 files changed, 7 insertions, 0 deletions
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); |