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Add log message for max-completely-peeled-times
- From: Eric Botcazou <ebotcazou at adacore dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Sat, 15 Nov 2014 13:04:08 +0100
- Subject: Add log message for max-completely-peeled-times
- Authentication-results: sourceware.org; auth=none
Try_unroll_loop_completely logs a message for max-completely-peeled-insns:
else if (unr_insns
> (unsigned) PARAM_VALUE (PARAM_MAX_COMPLETELY_PEELED_INSNS))
{
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, "Not unrolling loop %d: "
"(--param max-completely-peeled-insns limit reached).\n",
loop->num);
return false;
}
but not for max-completely-peeled-times:
max_unroll = PARAM_VALUE (PARAM_MAX_COMPLETELY_PEEL_TIMES);
if (n_unroll > max_unroll)
return false;
so the attached patch adds one.
Tested on x86_64-suse-linux, applied on the mainline as obvious.
2014-11-15 Eric Botcazou <ebotcazou@adacore.com>
* tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Add log message
for max-completely-peeled-insns limit.
--
Eric BotcazouIndex: tree-ssa-loop-ivcanon.c
===================================================================
--- tree-ssa-loop-ivcanon.c (revision 217538)
+++ tree-ssa-loop-ivcanon.c (working copy)
@@ -674,7 +674,7 @@ try_unroll_loop_completely (struct loop
HOST_WIDE_INT maxiter,
location_t locus)
{
- unsigned HOST_WIDE_INT n_unroll = 0, ninsns, max_unroll, unr_insns;
+ unsigned HOST_WIDE_INT n_unroll = 0, ninsns, unr_insns;
gimple cond;
struct loop_size size;
bool n_unroll_found = false;
@@ -720,9 +720,14 @@ try_unroll_loop_completely (struct loop
if (!n_unroll_found)
return false;
- max_unroll = PARAM_VALUE (PARAM_MAX_COMPLETELY_PEEL_TIMES);
- if (n_unroll > max_unroll)
- return false;
+ if (n_unroll > (unsigned) PARAM_VALUE (PARAM_MAX_COMPLETELY_PEEL_TIMES))
+ {
+ if (dump_file && (dump_flags & TDF_DETAILS))
+ fprintf (dump_file, "Not unrolling loop %d "
+ "(--param max-completely-peeled-times limit reached).\n",
+ loop->num);
+ return false;
+ }
if (!edge_to_cancel)
edge_to_cancel = loop_edge_to_cancel (loop);