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ipa-fnsummary.c (analyze_function_body): Accumulate time consistently in sreal.

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* ipa-fnsummary.c (analyze_function_body): Accumulate time consistently
	in sreal.
	* gcc.dg/ipa/ipcp-2.c: Lower threshold.

From-SVN: r254834
This commit is contained in:
Jan Hubicka 2017-11-16 17:50:47 +01:00 committed by Jan Hubicka
parent 913f8c088e
commit b71289b1ef
4 changed files with 17 additions and 11 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2017-11-16 Jan Hubicka <hubicka@ucw.cz>
* ipa-fnsummary.c (analyze_function_body): Accumulate time consistently
in sreal.
2017-11-16 Jan Hubicka <hubicka@ucw.cz>
* predict.c (combine_predictions_for_bb): Preserve zero predicted

17
gcc/ipa-fnsummary.c
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@ -1986,7 +1986,7 @@ analyze_function_body (struct cgraph_node *node, bool early)
<0,2>. */
basic_block bb;
struct function *my_function = DECL_STRUCT_FUNCTION (node->decl);
int freq;
sreal freq;
struct ipa_fn_summary *info = ipa_fn_summaries->get (node);
predicate bb_predicate;
struct ipa_func_body_info fbi;
@ -2052,7 +2052,7 @@ analyze_function_body (struct cgraph_node *node, bool early)
for (n = 0; n < nblocks; n++)
{
bb = BASIC_BLOCK_FOR_FN (cfun, order[n]);
freq = compute_call_stmt_bb_frequency (node->decl, bb);
freq = bb->count.to_sreal_scale (ENTRY_BLOCK_PTR_FOR_FN (cfun)->count);
if (clobber_only_eh_bb_p (bb))
{
if (dump_file && (dump_flags & TDF_DETAILS))
@ -2127,7 +2127,7 @@ analyze_function_body (struct cgraph_node *node, bool early)
fprintf (dump_file, " ");
print_gimple_stmt (dump_file, stmt, 0);
fprintf (dump_file, "\t\tfreq:%3.2f size:%3i time:%3i\n",
((double) freq) / CGRAPH_FREQ_BASE, this_size,
freq.to_double (), this_size,
this_time);
}
@ -2201,7 +2201,7 @@ analyze_function_body (struct cgraph_node *node, bool early)
will_be_nonconstant = true;
if (this_time || this_size)
{
this_time *= freq;
sreal final_time = (sreal)this_time * freq;
prob = eliminated_by_inlining_prob (stmt);
if (prob == 1 && dump_file && (dump_flags & TDF_DETAILS))
@ -2218,7 +2218,7 @@ analyze_function_body (struct cgraph_node *node, bool early)
if (*(is_gimple_call (stmt) ? &bb_predicate : &p) != false)
{
time += this_time;
time += final_time;
size += this_size;
}
@ -2231,14 +2231,12 @@ analyze_function_body (struct cgraph_node *node, bool early)
{
predicate ip = bb_predicate & predicate::not_inlined ();
info->account_size_time (this_size * prob,
(sreal)(this_time * prob)
/ (CGRAPH_FREQ_BASE * 2), ip,
(this_time * prob) / 2, ip,
p);
}
if (prob != 2)
info->account_size_time (this_size * (2 - prob),
(sreal)(this_time * (2 - prob))
/ (CGRAPH_FREQ_BASE * 2),
(this_time * (2 - prob) / 2),
bb_predicate,
p);
}
@ -2256,7 +2254,6 @@ analyze_function_body (struct cgraph_node *node, bool early)
}
}
set_hint_predicate (&ipa_fn_summaries->get (node)->array_index, array_index);
time = time / CGRAPH_FREQ_BASE;
free (order);
if (nonconstant_names.exists () && !early)

4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2017-11-16 Jan Hubicka <hubicka@ucw.cz>
* gcc.dg/ipa/ipcp-2.c: Lower threshold.
2017-11-16 Martin Sebor <msebor@redhat.com>
PR middle-end/63477

2
gcc/testsuite/gcc.dg/ipa/ipcp-2.c
View File

@ -1,5 +1,5 @@
/* { dg-do compile } */
/* { dg-options "-O3 -fipa-cp -fipa-cp-clone -fdump-ipa-cp -fno-early-inlining --param ipa-cp-eval-threshold=100" } */
/* { dg-options "-O3 -fipa-cp -fipa-cp-clone -fdump-ipa-cp -fno-early-inlining --param ipa-cp-eval-threshold=80" } */
/* { dg-add-options bind_pic_locally } */
extern int get_stuff (int);