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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
This commit is contained in:
Zdenek Dvorak 2007-04-15 05:36:25 +02:00 committed by Zdenek Dvorak
parent b4501dfdd2
commit 2732d76752
2 changed files with 12 additions and 0 deletions
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5
gcc/ChangeLog
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@ -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

7
gcc/tree-ssa-loop-prefetch.c
View File

@ -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);