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File _service:tar_scm:0011-Add-attribute-hot-judgement-for-INLINE_HINT_known_ho.patch of Package gcc
From 355eb8e20327242442d139fb052d3a3befde3dd7 Mon Sep 17 00:00:00 2001 From: "Cui,Lili" <lili.cui@intel.com> Date: Tue, 1 Nov 2022 09:16:49 +0800 Subject: [PATCH 11/22] Add attribute hot judgement for INLINE_HINT_known_hot hint. We set up INLINE_HINT_known_hot hint only when we have profile feedback, now add function attribute judgement for it, when both caller and callee have __attribute__((hot)), we will also set up INLINE_HINT_known_hot hint for it. With this patch applied, ADL Multi-copy: 538.imagic_r 16.7% ICX Multi-copy: 538.imagic_r 15.2% CLX Multi-copy: 538.imagic_r 12.7% Znver3 Multi-copy: 538.imagic_r 10.6% Arm Multi-copy: 538.imagic_r 13.4% gcc/ChangeLog * ipa-inline-analysis.cc (do_estimate_edge_time): Add function attribute judgement for INLINE_HINT_known_hot hint. gcc/testsuite/ChangeLog: * gcc.dg/ipa/inlinehint-6.c: New test. --- gcc/ipa-inline-analysis.cc | 13 ++++--- gcc/testsuite/gcc.dg/ipa/inlinehint-6.c | 47 +++++++++++++++++++++++++ 2 files changed, 56 insertions(+), 4 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/ipa/inlinehint-6.c diff --git a/gcc/ipa-inline-analysis.cc b/gcc/ipa-inline-analysis.cc index 11d8d09ee..16ac24cfc 100644 --- a/gcc/ipa-inline-analysis.cc +++ b/gcc/ipa-inline-analysis.cc @@ -48,6 +48,7 @@ along with GCC; see the file COPYING3. If not see #include "ipa-utils.h" #include "cfgexpand.h" #include "gimplify.h" +#include "attribs.h" /* Cached node/edge growths. */ fast_call_summary<edge_growth_cache_entry *, va_heap> *edge_growth_cache = NULL; @@ -249,15 +250,19 @@ do_estimate_edge_time (struct cgraph_edge *edge, sreal *ret_nonspec_time) hints = estimates.hints; } - /* When we have profile feedback, we can quite safely identify hot - edges and for those we disable size limits. Don't do that when - probability that caller will call the callee is low however, since it + /* When we have profile feedback or function attribute, we can quite safely + identify hot edges and for those we disable size limits. Don't do that + when probability that caller will call the callee is low however, since it may hurt optimization of the caller's hot path. */ - if (edge->count.ipa ().initialized_p () && edge->maybe_hot_p () + if ((edge->count.ipa ().initialized_p () && edge->maybe_hot_p () && (edge->count.ipa ().apply_scale (2, 1) > (edge->caller->inlined_to ? edge->caller->inlined_to->count.ipa () : edge->caller->count.ipa ()))) + || (lookup_attribute ("hot", DECL_ATTRIBUTES (edge->caller->decl)) + != NULL + && lookup_attribute ("hot", DECL_ATTRIBUTES (edge->callee->decl)) + != NULL)) hints |= INLINE_HINT_known_hot; gcc_checking_assert (size >= 0); diff --git a/gcc/testsuite/gcc.dg/ipa/inlinehint-6.c b/gcc/testsuite/gcc.dg/ipa/inlinehint-6.c new file mode 100644 index 000000000..1f3be641c --- /dev/null +++ b/gcc/testsuite/gcc.dg/ipa/inlinehint-6.c @@ -0,0 +1,47 @@ +/* { dg-options "-O3 -c -fdump-ipa-inline-details -fno-early-inlining -fno-ipa-cp" } */ +/* { dg-add-options bind_pic_locally } */ + +#define size_t long long int + +struct A +{ + size_t f1, f2, f3, f4; +}; +struct C +{ + struct A a; + size_t b; +}; +struct C x; + +__attribute__((hot)) struct C callee (struct A *a, struct C *c) +{ + c->a=(*a); + + if((c->b + 7) & 17) + { + c->a.f1 = c->a.f2 + c->a.f1; + c->a.f2 = c->a.f3 - c->a.f2; + c->a.f3 = c->a.f2 + c->a.f3; + c->a.f4 = c->a.f2 - c->a.f4; + c->b = c->a.f2; + + } + return *c; +} + +__attribute__((hot)) struct C caller (size_t d, size_t e, size_t f, size_t g, struct C *c) +{ + struct A a; + a.f1 = 1 + d; + a.f2 = e; + a.f3 = 12 + f; + a.f4 = 68 + g; + if (c->b > 0) + return callee (&a, c); + else + return *c; +} + +/* { dg-final { scan-ipa-dump "known_hot" "inline" } } */ + -- 2.33.0
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