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| author | rakdver <rakdver@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-04-15 03:36:25 +0000 |
|---|---|---|
| committer | rakdver <rakdver@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-04-15 03:36:25 +0000 |
| commit | a30d0a5b6117c67fe01f50cc7aa246001ffbf351 (patch) | |
| tree | 278968791535a84ce6ab905bcb8f15dad74d7d2c /gcc/tree-ssa-loop-prefetch.c | |
| parent | f1015055c78bcdf3ecbcf4b77d689e15cd39f89c (diff) | |
| download | gcc-a30d0a5b6117c67fe01f50cc7aa246001ffbf351.tar.gz | |
* tree-ssa-loop-prefetch.c (loop_prefetch_arrays): Ignore
cold loops.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@123843 138bc75d-0d04-0410-961f-82ee72b054a4
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 a0d70cc382f..35e80218cb2 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); |