From 2732d76752f5be3ef0228823e61de8dbef6747d8 Mon Sep 17 00:00:00 2001 From: Zdenek Dvorak Date: Sun, 15 Apr 2007 05:36:25 +0200 Subject: [PATCH] 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 --- gcc/ChangeLog | 5 +++++ gcc/tree-ssa-loop-prefetch.c | 7 +++++++ 2 files changed, 12 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 43eff0c148d..cc2aada1a86 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2007-04-11 Zdenek Dvorak + + * tree-ssa-loop-prefetch.c (loop_prefetch_arrays): Ignore + cold loops. + 2007-04-14 Andrew Pinski PR c/31520 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);