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[patch] Ignore non relobj files in gc
- From: Rafael EspÃndola <rafael dot espindola at gmail dot com>
- To: Binutils <binutils at sourceware dot org>
- Cc: Sriraman Tallam <tmsriram at google dot com>, Cary Coutant <ccoutant at gmail dot com>
- Date: Wed, 22 Apr 2015 22:26:56 -0400
- Subject: [patch] Ignore non relobj files in gc
- Authentication-results: sourceware.org; auth=none
If a relocation points to a dynamic object we can ignore it, since we
cannot gc an already existing .so file.
The attached patch produces an identical chromium binary, but does so
a bit faster (see the attached perf logs).
Using Relobj also helps me in my patch for gcing parts of SHF_MERGE sections.
Cheers,
Rafael
2015-04-22 Rafael Ãvila de EspÃndola <rafael.espindola@gmail.com>
* gc.cc (Garbage_collection::do_transitive_closure): Use Rel_section_id.
* gc.h (Garbage_collection): Use Rel_section_id.
(is_section_garbage): Use Relobj.
(add_cident_section): Use Relobj.
(add_reference): Use Relobj and Rel_section_id.
(gc_process_relocs): Ignore non Relobj objects.
* object.cc (do_layout): Use Rel_section_id.
* object.h (Rel_section_id): New.
* powerpc.cc (Powerpc_relobj): Use Rel_section_id.
(add_reference): Use Relobj and Rel_section_id.
(do_gc_add_reference): Use Relobj.
(gc_process_relocs): Use Relobj.
(do_gc_mark_symbol): Use Rel_section_id.
* symtab.cc (gc_mark_symbol): Use Rel_section_id.
* symtab.h (relobj): New.
* target.h (gc_add_reference): Use Relobj.
(do_gc_add_reference): Use Relobj.
diff --git a/gold/gc.cc b/gold/gc.cc
index 08a2bba..eff4968 100644
--- a/gold/gc.cc
+++ b/gold/gc.cc
@@ -38,7 +38,7 @@ Garbage_collection::do_transitive_closure()
{
// Add elements from the work list to the referenced list
// one by one.
- Section_id entry = this->worklist().back();
+ Rel_section_id entry = this->worklist().back();
this->worklist().pop_back();
if (!this->referenced_list().insert(entry).second)
continue;
diff --git a/gold/gc.h b/gold/gc.h
index bf4023d..9723e3f 100644
--- a/gold/gc.h
+++ b/gold/gc.h
@@ -49,9 +49,9 @@ class Garbage_collection
{
public:
- typedef Unordered_set<Section_id, Section_id_hash> Sections_reachable;
- typedef std::map<Section_id, Sections_reachable> Section_ref;
- typedef std::vector<Section_id> Worklist_type;
+ typedef Unordered_set<Rel_section_id, Section_id_hash> Sections_reachable;
+ typedef std::map<Rel_section_id, Sections_reachable> Section_ref;
+ typedef std::vector<Rel_section_id> Worklist_type;
// This maps the name of the section which can be represented as a C
// identifier (cident) to the list of sections that have that name.
// Different object files can have cident sections with the same name.
@@ -87,8 +87,8 @@ class Garbage_collection
do_transitive_closure();
bool
- is_section_garbage(Object* obj, unsigned int shndx)
- { return (this->referenced_list().find(Section_id(obj, shndx))
+ is_section_garbage(Relobj* obj, unsigned int shndx)
+ { return (this->referenced_list().find(Rel_section_id(obj, shndx))
== this->referenced_list().end()); }
Cident_section_map*
@@ -97,17 +97,17 @@ class Garbage_collection
void
add_cident_section(std::string section_name,
- Section_id secn)
+ Rel_section_id secn)
{ this->cident_sections_[section_name].insert(secn); }
// Add a reference from the SRC_SHNDX-th section of SRC_OBJECT to
// DST_SHNDX-th section of DST_OBJECT.
void
- add_reference(Object* src_object, unsigned int src_shndx,
- Object* dst_object, unsigned int dst_shndx)
+ add_reference(Relobj* src_object, unsigned int src_shndx,
+ Relobj* dst_object, unsigned int dst_shndx)
{
- Section_id src_id(src_object, src_shndx);
- Section_id dst_id(dst_object, dst_shndx);
+ Rel_section_id src_id(src_object, src_shndx);
+ Rel_section_id dst_id(dst_object, dst_shndx);
Sections_reachable& reachable = this->section_reloc_map_[src_id];
reachable.insert(dst_id);
}
@@ -229,7 +229,7 @@ gc_process_relocs(
unsigned int r_type = elfcpp::elf_r_type<size>(r_info);
typename elfcpp::Elf_types<size>::Elf_Swxword addend =
Reloc_types<sh_type, size, big_endian>::get_reloc_addend_noerror(&reloc);
- Object* dst_obj;
+ Relobj* dst_obj;
unsigned int dst_indx;
typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
Address dst_off;
@@ -291,7 +291,7 @@ gc_process_relocs(
bool is_ordinary = false;
if (gsym->source() == Symbol::FROM_OBJECT)
{
- dst_obj = gsym->object();
+ dst_obj = gsym->relobj();
dst_indx = gsym->shndx(&is_ordinary);
}
dst_off = static_cast<const Sized_symbol<size>*>(gsym)->value();
@@ -340,7 +340,7 @@ gc_process_relocs(
src_obj));
}
- if (gsym->source() != Symbol::FROM_OBJECT)
+ if (dst_obj == NULL)
continue;
if (!is_ordinary)
continue;
@@ -357,7 +357,7 @@ gc_process_relocs(
symtab->gc()->cident_sections()->find(std::string(cident_section_name));
if (ele == symtab->gc()->cident_sections()->end())
continue;
- Section_id src_id(src_obj, src_indx);
+ Rel_section_id src_id(src_obj, src_indx);
Garbage_collection::Sections_reachable&
v(symtab->gc()->section_reloc_map()[src_id]);
Garbage_collection::Sections_reachable& cident_secn(ele->second);
diff --git a/gold/object.cc b/gold/object.cc
index 18c6670..a2bad83 100644
--- a/gold/object.cc
+++ b/gold/object.cc
@@ -1602,7 +1602,7 @@ Sized_relobj_file<size, big_endian>::do_layout(Symbol_table* symtab,
|| shdr.get_sh_type() == elfcpp::SHT_INIT_ARRAY
|| shdr.get_sh_type() == elfcpp::SHT_FINI_ARRAY)
{
- symtab->gc()->worklist().push_back(Section_id(this, i));
+ symtab->gc()->worklist().push_back(Rel_section_id(this, i));
}
// If the section name XXX can be represented as a C identifier
// it cannot be discarded if there are references to
@@ -1610,7 +1610,7 @@ Sized_relobj_file<size, big_endian>::do_layout(Symbol_table* symtab,
// specially handled.
if (is_cident(name))
{
- symtab->gc()->add_cident_section(name, Section_id(this, i));
+ symtab->gc()->add_cident_section(name, Rel_section_id(this, i));
}
}
diff --git a/gold/object.h b/gold/object.h
index fc93abd..29376f2 100644
--- a/gold/object.h
+++ b/gold/object.h
@@ -2865,6 +2865,8 @@ struct Relocate_info
// key type for various section maps.
typedef std::pair<Object*, unsigned int> Section_id;
+typedef std::pair<Relobj*, unsigned int> Rel_section_id;
+
// This is similar to Section_id but is used when the section
// pointers are const.
typedef std::pair<const Object*, unsigned int> Const_section_id;
diff --git a/gold/powerpc.cc b/gold/powerpc.cc
index fddf3fa..57e0082 100644
--- a/gold/powerpc.cc
+++ b/gold/powerpc.cc
@@ -79,7 +79,7 @@ class Powerpc_relobj : public Sized_relobj_file<size, big_endian>
{
public:
typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
- typedef Unordered_set<Section_id, Section_id_hash> Section_refs;
+ typedef Unordered_set<Rel_section_id, Section_id_hash> Section_refs;
typedef Unordered_map<Address, Section_refs> Access_from;
Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset,
@@ -212,11 +212,11 @@ public:
// Add a reference from SRC_OBJ, SRC_INDX to this object's .opd
// section at DST_OFF.
void
- add_reference(Object* src_obj,
+ add_reference(Relobj* src_obj,
unsigned int src_indx,
typename elfcpp::Elf_types<size>::Elf_Addr dst_off)
{
- Section_id src_id(src_obj, src_indx);
+ Rel_section_id src_id(src_obj, src_indx);
this->access_from_map_[dst_off].insert(src_id);
}
@@ -238,7 +238,7 @@ public:
if (this->opd_ent_[i].gc_mark)
{
unsigned int shndx = this->opd_ent_[i].shndx;
- symtab->gc()->worklist().push_back(Section_id(this, shndx));
+ symtab->gc()->worklist().push_back(Rel_section_id(this, shndx));
}
}
@@ -780,9 +780,9 @@ class Target_powerpc : public Sized_target<size, big_endian>
// section of a function descriptor.
void
do_gc_add_reference(Symbol_table* symtab,
- Object* src_obj,
+ Relobj* src_obj,
unsigned int src_shndx,
- Object* dst_obj,
+ Relobj* dst_obj,
unsigned int dst_shndx,
Address dst_off) const;
@@ -6347,7 +6347,7 @@ Target_powerpc<size, big_endian>::gc_process_relocs(
typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s;
for (s = p->second.begin(); s != p->second.end(); ++s)
{
- Object* src_obj = s->first;
+ Relobj* src_obj = s->first;
unsigned int src_indx = s->second;
symtab->gc()->add_reference(src_obj, src_indx,
ppc_object, dst_indx);
@@ -6384,9 +6384,9 @@ template<int size, bool big_endian>
void
Target_powerpc<size, big_endian>::do_gc_add_reference(
Symbol_table* symtab,
- Object* src_obj,
+ Relobj* src_obj,
unsigned int src_shndx,
- Object* dst_obj,
+ Relobj* dst_obj,
unsigned int dst_shndx,
Address dst_off) const
{
@@ -6434,8 +6434,8 @@ Target_powerpc<size, big_endian>::do_gc_mark_symbol(
if (ppc_object->opd_valid())
{
unsigned int dst_indx = ppc_object->get_opd_ent(dst_off);
- symtab->gc()->worklist().push_back(Section_id(ppc_object,
- dst_indx));
+ symtab->gc()->worklist().push_back(Rel_section_id(ppc_object,
+ dst_indx));
}
else
ppc_object->add_gc_mark(dst_off);
diff --git a/gold/symtab.cc b/gold/symtab.cc
index c197221..385024f 100644
--- a/gold/symtab.cc
+++ b/gold/symtab.cc
@@ -653,7 +653,7 @@ Symbol_table::gc_mark_symbol(Symbol* sym)
if (is_ordinary && shndx != elfcpp::SHN_UNDEF)
{
gold_assert(this->gc_!= NULL);
- this->gc_->worklist().push_back(Section_id(sym->object(), shndx));
+ this->gc_->worklist().push_back(Rel_section_id(sym->relobj(), shndx));
}
parameters->target().gc_mark_symbol(this, sym);
}
diff --git a/gold/symtab.h b/gold/symtab.h
index 9413360..4144aef 100644
--- a/gold/symtab.h
+++ b/gold/symtab.h
@@ -157,6 +157,17 @@ class Symbol
return this->u_.from_object.object;
}
+ Relobj*
+ relobj() const
+ {
+ if (this->source_ != FROM_OBJECT)
+ return NULL;
+ Object *r = this->u_.from_object.object;
+ if (r->is_dynamic() || r->pluginobj() != NULL)
+ return NULL;
+ return static_cast<Relobj*>(r);
+ }
+
// Return the index of the section in the input relocatable or
// dynamic object file.
unsigned int
diff --git a/gold/target.h b/gold/target.h
index 95bc57e..dfbc5ee 100644
--- a/gold/target.h
+++ b/gold/target.h
@@ -1056,9 +1056,9 @@ class Sized_target : public Target
// and DST_OFF.
void
gc_add_reference(Symbol_table* symtab,
- Object* src_obj,
+ Relobj* src_obj,
unsigned int src_shndx,
- Object* dst_obj,
+ Relobj* dst_obj,
unsigned int dst_shndx,
typename elfcpp::Elf_types<size>::Elf_Addr dst_off) const
{
@@ -1080,8 +1080,8 @@ class Sized_target : public Target
// Handle target specific gc actions when adding a gc reference.
virtual void
- do_gc_add_reference(Symbol_table*, Object*, unsigned int,
- Object*, unsigned int,
+ do_gc_add_reference(Symbol_table*, Relobj*, unsigned int,
+ Relobj*, unsigned int,
typename elfcpp::Elf_types<size>::Elf_Addr) const
{ }
Performance counter stats for '/home/espindola/binutils/ld-master -pie --hash-style=gnu --no-add-needed --build-id --gc-sections --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o chrome /usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64/Scrt1.o /usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64/crti.o /usr/lib/gcc/x86_64-redhat-linux/4.9.2/crtbeginS.o -L. -L/usr/lib/gcc/x86_64-redhat-linux/4.9.2 -L/usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../.. -L/home/espindola/llvm/build-227431/bin/../lib -L/lib -L/usr/lib -z now -z relro --fatal-warnings -z defs -z noexecstack --disable-new-dtags --export-dynamic -uIsHeapProfilerRunning -uProfilerStart -u_Z21InitialMallocHook_NewPKvj -u_Z22InitialMallocHook_MMapPKvS0_jiiix -u_Z22InitialMallocHook_SbrkPKvi -u_Z21InitialMallocHook_NewPKvm -u_Z22InitialMallocHook_MMapPKvS0_miiil -u_Z22InitialMallocHook_SbrkPKvl -u_ZN15HeapLeakChecker12IgnoreObjectEPKv -u_ZN15HeapLeakChecker14UnIgnoreObjectEPKv -O1 --as-needed --start-group obj/chrome/app/chrome_initial.chrome_exe_main_aura.o obj/content/public/common/chrome_initial.content_switches.o obj/chrome/app/chrome_initial.chrome_main.o obj/chrome/app/chrome_initial.chrome_main_delegate.o obj/chrome/libcommon.a obj/chrome/libbrowser.a obj/chrome/libdebugger.a obj/ppapi/libppapi_host.a obj/printing/libprinting.a obj/chrome/libservice.a obj/chrome/libplugin.a obj/chrome/librenderer.a obj/chrome/libutility.a obj/content/libcontent_gpu.a obj/content/libcontent_ppapi_plugin.a obj/components/nacl/renderer/plugin/libnacl_trusted_plugin.a obj/remoting/libremoting_client_plugin.a obj/content/libcontent_app_both.a obj/chrome/libinstaller_util.a obj/base/allocator/liballocator.a obj/components/libstartup_metric_utils.a obj/chrome/libcommon_net.a obj/base/libbase.a obj/base/libbase_static.a obj/base/allocator/liballocator_extension_thunks.a obj/third_party/modp_b64/libmodp_b64.a obj/base/third_party/dynamic_annotations/libdynamic_annotations.a obj/base/libsymbolize.a obj/base/libxdg_mime.a obj/third_party/libevent/libevent.a obj/components/libnetwork_hints_common.a obj/components/liberror_page_common.a obj/url/liburl_lib.a obj/third_party/icu/libicui18n.a obj/third_party/icu/libicuuc.a obj/third_party/icu/libicudata.a obj/crypto/libcrcrypto.a obj/net/third_party/nss/libcrssl.a obj/net/libnet.a obj/base/libbase_i18n.a obj/base/libbase_prefs.a obj/sdch/libsdch.a obj/third_party/zlib/libchrome_zlib.a obj/third_party/zlib/libzlib_x86_simd.a obj/build/linux/libgio.a obj/ui/base/libui_base.a obj/skia/libskia_library.a obj/skia/libskia_opts.a obj/skia/libskia_opts_ssse3.a obj/skia/libskia_opts_sse41.a obj/third_party/sfntly/libsfntly.a obj/skia/libskia_chrome.a obj/skia/libskia_chrome_opts.a obj/ui/events/libevents.a obj/ui/gfx/libgfx.a obj/third_party/libpng/libpng.a obj/ui/gfx/libgfx_geometry.a obj/third_party/libjpeg_turbo/libjpeg_turbo.a obj/ui/gfx/x/libgfx_x11.a obj/ui/events/libdom4_keycode_converter.a obj/ui/events/libevents_base.a obj/ui/events/libgesture_detection.a obj/ui/events/devices/libevents_devices.a obj/ui/events/platform/libevents_platform.a obj/ui/events/platform/x11/libx11_events_platform.a obj/gpu/libgpu_ipc.a obj/gpu/libcommand_buffer_common.a obj/gpu/command_buffer/libgles2_utils.a obj/ipc/libipc.a obj/chrome/libsafe_browsing_proto.a obj/third_party/protobuf/libprotobuf_lite.a obj/chrome/libcommon_constants.a obj/components/libbookmarks_common.a obj/components/libnacl_switches.a obj/components/libcloud_devices_common.a obj/google_apis/libgoogle_apis.a obj/third_party/libxml/libxml2.a obj/components/libcomponent_updater.a obj/components/libupdate_client.a obj/courgette/libcourgette_lib.a obj/third_party/lzma_sdk/liblzma_sdk.a obj/third_party/zlib/google/libzip.a obj/third_party/zlib/libminizip.a obj/components/libcrx_file.a obj/components/libcontent_settings_core_common.a obj/components/libjson_schema.a obj/third_party/re2/libre2.a obj/components/libmetrics.a obj/components/libcomponent_metrics_proto.a obj/components/libvariations.a obj/third_party/mt19937ar/libmt19937ar.a obj/components/libpolicy_component_common.a obj/components/libcloud_policy_proto.a obj/components/libpolicy.a obj/components/libcloud_policy_proto_generated_compile.a obj/components/libtranslate_core_common.a obj/content/libcontent_common.a obj/components/libtracing.a obj/ui/accessibility/libaccessibility.a obj/ui/accessibility/libax_gen.a obj/tools/json_schema_compiler/libapi_gen_util.a obj/ui/events/ipc/libevents_ipc.a obj/ui/gfx/ipc/libgfx_ipc.a obj/ui/shell_dialogs/libshell_dialogs.a obj/ui/aura/libaura.a obj/ui/compositor/libcompositor.a obj/cc/libcc.a obj/gpu/libcommand_buffer_client.a obj/gpu/libcommand_buffer_service.a obj/gpu/libdisk_cache_proto.a obj/third_party/smhasher/libcityhash.a obj/ui/gl/libgl_wrapper.a obj/third_party/angle/src/libtranslator.a obj/third_party/angle/src/libtranslator_lib.a obj/third_party/angle/src/libpreprocessor.a obj/third_party/angle/src/libangle_common.a obj/gpu/libgles2_cmd_helper.a obj/gpu/libgpu_config.a obj/build/linux/libpci.a obj/third_party/libXNVCtrl/libXNVCtrl.a obj/media/libmedia.a libyuv.a obj/third_party/opus/libopus.a obj/media/libshared_memory_support.a obj/third_party/ffmpeg/libffmpeg.a obj/third_party/libvpx/libvpx.a obj/third_party/libvpx/libvpx_intrinsics_mmx.a obj/third_party/libvpx/libvpx_intrinsics_sse2.a obj/third_party/libvpx/libvpx_intrinsics_ssse3.a obj/third_party/libvpx/libvpx_intrinsics_sse4_1.a obj/third_party/libvpx/libvpx_intrinsics_avx2.a obj/media/libmedia_asm.a obj/media/libmedia_sse2.a obj/cc/libcc_surfaces.a obj/gpu/blink/libgpu_blink.a obj/gpu/libgles2_c_lib.a obj/gpu/libgles2_implementation.a obj/gpu/libgl_in_process_context.a obj/gpu/skia_bindings/libgpu_skia_bindings.a obj/third_party/WebKit/Source/platform/libblink_common.a obj/third_party/WebKit/Source/wtf/libwtf.a obj/ipc/mojo/libipc_mojo.a obj/mojo/libmojo_environment_chromium.a obj/mojo/libmojo_environment_chromium_impl.a obj/mojo/libmojo_common_lib.a obj/third_party/mojo/libmojo_cpp_bindings.a obj/third_party/mojo/libmojo_system_impl.a obj/storage/libstorage_common.a obj/third_party/WebKit/Source/platform/libblink_platform.a obj/third_party/WebKit/Source/platform/libblink_heap_asm_stubs.a obj/third_party/libwebp/libwebp_dec.a obj/third_party/libwebp/libwebp_dsp.a obj/third_party/libwebp/libwebp_utils.a obj/third_party/libwebp/libwebp_demux.a obj/third_party/libwebp/libwebp_enc.a obj/third_party/ots/libots.a obj/third_party/brotli/libbrotli.a obj/third_party/qcms/libqcms.a obj/v8/tools/gyp/libv8_base.a obj/v8/tools/gyp/libv8_libbase.a obj/v8/tools/gyp/libv8_external_snapshot.a obj/third_party/iccjpeg/libiccjpeg.a obj/third_party/WebKit/Source/web/libblink_web.a obj/third_party/WebKit/Source/core/libwebcore_dom.a obj/third_party/libxslt/libxslt.a obj/third_party/sqlite/libsqlite3.a obj/third_party/WebKit/Source/core/libwebcore_html.a obj/third_party/WebKit/Source/core/libwebcore_remaining.a obj/third_party/WebKit/Source/core/libwebcore_rendering.a obj/third_party/WebKit/Source/core/libwebcore_svg.a obj/third_party/WebKit/Source/core/libwebcore_generated.a obj/gin/libgin.a obj/third_party/snappy/libsnappy.a obj/third_party/WebKit/Source/modules/libmodules.a obj/third_party/mojo/libmojo_application_bindings.a obj/webkit/common/gpu/libwebkit_gpu.a obj/ppapi/libppapi_shared.a obj/ui/surface/libsurface.a obj/third_party/libjingle/libjingle.a obj/third_party/webrtc/base/librtc_base.a obj/third_party/webrtc/base/librtc_base_approved.a obj/third_party/webrtc/libjingle/xmllite/librtc_xmllite.a obj/third_party/libjingle/libjingle_p2p_constants.a obj/device/usb/libdevice_usb.a obj/third_party/libusb/libusb.a obj/device/udev_linux/libudev_linux.a 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/usr/lib/gcc/x86_64-redhat-linux/4.9.2/crtendS.o /usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64/crtn.o' (30 runs):
6410.666507 task-clock (msec) # 0.999 CPUs utilized ( +- 0.20% )
3 context-switches # 0.000 K/sec ( +- 6.07% )
0 cpu-migrations # 0.000 K/sec
266,965 page-faults # 0.042 M/sec
19,501,602,507 cycles # 3.042 GHz ( +- 0.04% )
9,079,633,434 stalled-cycles-frontend # 46.56% frontend cycles idle ( +- 0.09% )
0 stalled-cycles-backend # 0.00% backend cycles idle
27,918,003,360 instructions # 1.43 insns per cycle
# 0.33 stalled cycles per insn ( +- 0.00% )
5,534,244,864 branches # 863.287 M/sec ( +- 0.00% )
81,205,896 branch-misses # 1.47% of all branches ( +- 0.00% )
6.415159106 seconds time elapsed ( +- 0.20% )
Performance counter stats for '/home/espindola/binutils/ld-patch -pie --hash-style=gnu --no-add-needed --build-id --gc-sections --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o chrome /usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64/Scrt1.o /usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64/crti.o /usr/lib/gcc/x86_64-redhat-linux/4.9.2/crtbeginS.o -L. -L/usr/lib/gcc/x86_64-redhat-linux/4.9.2 -L/usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../.. -L/home/espindola/llvm/build-227431/bin/../lib -L/lib -L/usr/lib -z now -z relro --fatal-warnings -z defs -z noexecstack --disable-new-dtags --export-dynamic -uIsHeapProfilerRunning -uProfilerStart -u_Z21InitialMallocHook_NewPKvj -u_Z22InitialMallocHook_MMapPKvS0_jiiix -u_Z22InitialMallocHook_SbrkPKvi -u_Z21InitialMallocHook_NewPKvm -u_Z22InitialMallocHook_MMapPKvS0_miiil -u_Z22InitialMallocHook_SbrkPKvl 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obj/native_client/src/trusted/validator_x86/libnccopy_x86_64.a obj/native_client/src/trusted/service_runtime/libnacl_signal.a obj/chrome/libsafe_browsing_chunk_proto.a obj/chrome/libsafe_browsing_report_proto.a obj/ash/libash_with_content.a obj/components/libconstrained_window.a obj/components/libweb_modal.a obj/extensions/components/libnative_app_window.a obj/extensions/libextensions_browser.a obj/components/libcopresence_endpoints.a obj/components/libkeyed_service_content.a obj/components/libuser_prefs.a obj/components/libsessions_content.a obj/components/libstorage_monitor.a obj/device/media_transfer_protocol/libdevice_media_transfer_protocol.a obj/device/media_transfer_protocol/libmtp_file_entry_proto.a obj/device/media_transfer_protocol/libmtp_storage_info_proto.a obj/components/libweb_cache_browser.a obj/components/libweb_cache_common.a obj/device/serial/libdevice_serial.a obj/extensions/browser/api/libextensions_api_registration.a obj/extensions/common/api/libcast_channel_proto.a obj/chrome/browser/ui/libgtk2ui/libgtk2ui.a obj/third_party/libaddressinput/libaddressinput.a obj/third_party/libaddressinput/libaddressinput_util.a obj/chrome/libbrowser_extensions.a obj/chrome/browser/extensions/api/libchrome_api_registration.a obj/components/libcopresence_proto.a obj/components/libcopresence.a obj/components/libproximity_auth.a obj/device/hid/libdevice_hid.a obj/device/core/libdevice_core.a obj/third_party/hunspell/libhunspell.a obj/extensions/components/libjavascript_dialog_extensions_client.a obj/chrome/libprobe_message_proto.a obj/components/libautofill_core_browser.a obj/third_party/fips181/libfips181.a obj/third_party/libphonenumber/libphonenumber.a obj/third_party/libphonenumber/libphonenumber_without_metadata.a obj/components/libinfobars_core.a obj/components/libbookmarks_browser.a obj/components/libfavicon_base.a obj/components/libquery_parser.a obj/components/libcaptive_portal.a obj/components/libdata_reduction_proxy_core_browser.a obj/components/libdata_reduction_proxy_core_common.a obj/components/libdomain_reliability.a obj/components/libenhanced_bookmarks.a obj/components/libenhanced_bookmarks_proto.a obj/components/libfavicon_core.a obj/components/libfeedback_component.a obj/components/libgoogle_core_browser.a obj/components/liburl_fixer.a obj/components/libhistory_core_browser.a obj/components/libhistory_core_common.a obj/components/libmetrics_gpu.a obj/components/libmetrics_net.a obj/components/libmetrics_profiler.a obj/components/libnavigation_metrics.a obj/components/libnetwork_time.a obj/components/libomnibox.a obj/components/libsearch.a obj/components/libsearch_engines.a obj/components/librappor.a obj/components/search_engines/libprepopulated_engines.a obj/components/libvariations_http_provider.a obj/components/libpolicy_component_browser.a obj/components/libprecache_core.a obj/components/libprecache_core_proto.a obj/components/librenderer_context_menu.a obj/components/libsearch_provider_logos.a obj/components/libsuggestions.a obj/components/libsync_driver.a obj/components/libtranslate_core_browser.a obj/components/liblanguage_usage_metrics.a obj/components/libwebdata_services.a obj/chrome/libapps.a obj/components/libautofill_content_browser.a obj/components/libdom_distiller_content.a obj/components/libhistory_content_browser.a obj/components/libnavigation_interception.a obj/components/libpacked_ct_ev_whitelist.a obj/components/libpassword_manager_content_browser.a obj/components/libpower.a obj/components/libprecache_content.a obj/components/libtranslate_content_browser.a obj/components/libvisitedlink_browser.a obj/components/libweb_resource.a obj/net/libnet_extras.a obj/testing/perf/libperf_test.a obj/chrome/libsync_file_system_drive_proto.a obj/components/libcryptauth.a obj/components/libcryptauth_proto.a obj/components/libnacl_browser.a obj/chrome/libpolicy_path_parser.a obj/components/libpdf_browser.a obj/components/libpdf_common.a obj/chrome/libsafe_browsing_metadata_proto.a obj/build/linux/libspeechd.a obj/components/libbreakpad_host.a obj/components/libcrash_component.a obj/components/libcrash_component_lib.a obj/breakpad/libbreakpad_client.a obj/components/libautofill_content_renderer.a obj/components/libcdm_renderer.a obj/components/libcdm_common.a obj/components/libnetwork_hints_renderer.a obj/components/liberror_page_renderer.a obj/components/libpassword_manager_content_renderer.a obj/components/libplugins_renderer.a obj/components/libtranslate_content_renderer.a obj/components/libvisitedlink_renderer.a obj/components/libweb_cache_renderer.a obj/components/libnacl.a obj/mojo/libmonacl_syscall.a obj/components/libnacl_renderer.a obj/native_client/src/trusted/nonnacl_util/libsel_ldr_launcher_base.a obj/native_client/src/shared/serialization/libserialization.a obj/ppapi/libppapi_cpp_objects.a obj/ppapi/libppapi_internal_module.a obj/third_party/jsoncpp/libjsoncpp.a obj/components/libpdf_renderer.a obj/third_party/smhasher/libmurmurhash3.a obj/extensions/libextensions_renderer.a obj/media/cast/libcast_sender.a obj/components/libprinting_renderer.a obj/extensions/libextensions_utility.a obj/third_party/cld_2/libcld2_static.a obj/remoting/libremoting_base.a obj/remoting/proto/libchromotocol_proto_lib.a obj/remoting/libremoting_client.a obj/remoting/libremoting_protocol.a --end-group -lrt -ldl -lgmodule-2.0 -lgobject-2.0 -lgthread-2.0 -lglib-2.0 -lsmime3 -lnss3 -lnssutil3 -lplds4 -lplc4 -lnspr4 -lpthread -lgconf-2 -lgio-2.0 -lresolv -lfontconfig -lfreetype -lpangocairo-1.0 -lcairo -lpangoft2-1.0 -lpango-1.0 -lharfbuzz -lX11 -lXi -lXcursor -lXext -lXfixes -lXrender -lXss -lXcomposite -lasound -lm -lXdamage -lXtst -lXrandr -lexpat -lcups -lgssapi_krb5 -lkrb5 -lk5crypto -lcom_err -lz -lcrypt -ldbus-1 -lcap -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgdk_pixbuf-2.0 -lstdc++ -lm -lgcc_s -lgcc -lpthread -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-redhat-linux/4.9.2/crtendS.o /usr/lib/gcc/x86_64-redhat-linux/4.9.2/../../../../lib64/crtn.o' (30 runs):
6401.969857 task-clock (msec) # 0.999 CPUs utilized ( +- 0.19% )
3 context-switches # 0.000 K/sec ( +- 5.68% )
0 cpu-migrations # 0.000 K/sec
265,300 page-faults # 0.041 M/sec
19,477,104,133 cycles # 3.042 GHz ( +- 0.04% )
8,945,865,937 stalled-cycles-frontend # 45.93% frontend cycles idle ( +- 0.09% )
0 stalled-cycles-backend # 0.00% backend cycles idle
27,808,410,820 instructions # 1.43 insns per cycle
# 0.32 stalled cycles per insn ( +- 0.00% )
5,499,248,193 branches # 858.993 M/sec ( +- 0.00% )
81,882,483 branch-misses # 1.49% of all branches ( +- 0.00% )
6.406455897 seconds time elapsed ( +- 0.19% )