<s>
Intel	O
oneAPI	B-Operating_System
DPC++	O
/C	O
++	O
Compiler	B-Language
and	O
Intel	B-Language
C++	I-Language
Compiler	I-Language
Classic	O
(	O
deprecated	O
icl	O
is	O
in	O
Intel	O
OneAPI	B-Operating_System
HPC	O
toolkit	O
)	O
are	O
Intel	O
’s	O
C	B-Language
,	O
C++	B-Language
,	O
SYCL	B-Language
,	O
and	O
Data	O
Parallel	O
C++	B-Language
(	O
DPC++	O
)	O
compilers	B-Language
for	O
Intel	O
processor-based	O
systems	O
,	O
available	O
for	O
Windows	B-Application
,	O
Linux	B-Application
,	O
and	O
macOS	B-Operating_System
operating	O
systems	O
.	O
</s>
<s>
Intel	O
oneAPI	B-Operating_System
DPC++	O
/C	O
++	O
Compiler	B-Language
is	O
available	O
for	O
Windows	B-Application
and	O
Linux	B-Application
and	O
supports	O
compiling	B-Language
C	B-Language
,	O
C++	B-Language
,	O
SYCL	B-Language
,	O
and	O
Data	O
Parallel	O
C++	B-Language
(	O
DPC++	O
)	O
source	O
,	O
targeting	O
Intel	B-Device
IA-32	I-Device
,	O
Intel	O
64	O
(	O
aka	O
x86-64	B-Device
)	O
,	O
Core	B-Device
,	O
Xeon	B-Device
,	O
and	O
Xeon	B-Device
Scalable	O
processors	O
,	O
as	O
well	O
as	O
GPUs	B-Architecture
including	O
Intel	O
Processor	O
Graphics	O
Gen9	O
and	O
above	O
,	O
Intel	B-General_Concept
Xe	I-General_Concept
architecture	O
,	O
and	O
Intel	O
Programmable	O
Acceleration	O
Card	O
with	O
Intel	O
Arria	O
10	O
GX	O
FPGA	O
.	O
</s>
<s>
Like	O
Intel	B-Language
C++	I-Language
Compiler	I-Language
Classic	O
,	O
it	O
also	O
supports	O
the	O
Microsoft	B-Application
Visual	I-Application
Studio	I-Application
and	O
Eclipse	B-Application
IDE	I-Application
development	O
environments	O
,	O
and	O
supports	O
threading	O
via	O
Intel	O
oneAPI	B-Operating_System
Threading	B-Application
Building	I-Application
Blocks	I-Application
,	O
OpenMP	B-Application
,	O
and	O
native	O
threads	O
.	O
</s>
<s>
DPC++	O
builds	O
on	O
the	O
SYCL	B-Language
specification	O
from	O
The	O
Khronos	O
Group	O
.	O
</s>
<s>
It	O
is	O
designed	O
to	O
allow	O
developers	O
to	O
reuse	O
code	O
across	O
hardware	O
targets	O
(	O
CPUs	O
and	O
accelerators	O
such	O
as	O
GPUs	B-Architecture
and	O
FPGAs	O
)	O
and	O
perform	O
custom	O
tuning	O
for	O
a	O
specific	O
accelerator	O
.	O
</s>
<s>
DPC++	O
comprises	O
C++17	B-Language
and	O
SYCL	B-Language
language	O
features	O
and	O
incorporates	O
open-source	O
community	O
extensions	O
that	O
make	O
SYCL	B-Language
easier	O
to	O
use	O
.	O
</s>
<s>
Many	O
of	O
these	O
extensions	O
were	O
adopted	O
by	O
the	O
SYCL	B-Language
2020	O
provisional	O
specification	O
including	O
unified	O
shared	O
memory	O
,	O
group	O
algorithms	O
,	O
and	O
sub-groups	O
.	O
</s>
<s>
Intel	O
announced	O
in	O
August	O
2021	O
the	O
complete	O
adoption	O
of	O
LLVM	B-Application
for	O
faster	O
build	O
times	O
and	O
benefits	O
from	O
supporting	O
the	O
latest	O
C++	B-Language
standards	O
.	O
</s>
<s>
Intel	B-Language
C++	I-Language
Compiler	I-Language
Classic	O
is	O
available	O
for	O
Windows	B-Application
,	O
Linux	B-Application
,	O
and	O
macOS	B-Operating_System
and	O
supports	O
compiling	B-Language
C	B-Language
and	O
C++	B-Language
source	O
,	O
targeting	O
Intel	B-Device
IA-32	I-Device
,	O
Intel	O
64	O
(	O
x86-64	B-Device
)	O
,	O
Core	B-Device
,	O
Xeon	B-Device
,	O
and	O
Xeon	B-Device
Scalable	O
processors	O
.	O
</s>
<s>
It	O
supports	O
the	O
Microsoft	B-Application
Visual	I-Application
Studio	I-Application
and	O
Eclipse	B-Application
IDE	I-Application
development	O
environments	O
.	O
</s>
<s>
Intel	B-Language
C++	I-Language
Compiler	I-Language
Classic	O
supports	O
threading	O
via	O
Intel	O
oneAPI	B-Operating_System
Threading	B-Application
Building	I-Application
Blocks	I-Application
,	O
OpenMP	B-Application
,	O
and	O
native	O
threads	O
.	O
</s>
<s>
According	O
to	O
Intel	O
,	O
starting	O
with	O
the	O
2023.0	O
release	O
,	O
Intel	O
oneAPI	B-Operating_System
DPC++	O
/C	O
++	O
Compiler	B-Language
supports	O
all	O
current	O
Intel	O
general-purpose	O
x86-64	B-Device
CPUs	O
and	O
GPUs	B-Architecture
including	O
:	O
</s>
<s>
GPUs	B-Architecture
:	O
</s>
<s>
Intel	B-Language
C++	I-Language
Compiler	I-Language
Classic	O
targets	O
general-purpose	O
Intel	O
x86-64	B-Device
architecture	O
CPUs	O
including	O
:	O
</s>
<s>
The	O
Intel	O
oneAPI	B-Operating_System
DPC++	O
/C	O
++	O
Compiler	B-Language
is	O
available	O
either	O
as	O
a	O
standalone	O
component	O
or	O
as	O
part	O
of	O
the	O
Intel	O
oneAPI	B-Operating_System
Base	O
Toolkit	O
,	O
Intel	O
oneAPI	B-Operating_System
HPC	O
Toolkit	O
,	O
and	O
Intel	O
oneAPI	B-Operating_System
IoT	O
Toolkit	O
.	O
</s>
<s>
The	O
Intel	B-Language
C++	I-Language
Compiler	I-Language
Classic	O
is	O
available	O
either	O
as	O
a	O
standalone	O
component	O
or	O
as	O
part	O
of	O
the	O
Intel	O
oneAPI	B-Operating_System
Base	O
Toolkit	O
.	O
</s>
<s>
The	O
Intel	O
compiler	B-Language
provides	O
debugging	O
information	O
that	O
is	O
standard	O
for	O
the	O
common	O
debuggers	O
(	O
DWARF	O
2	O
on	O
Linux	B-Application
,	O
similar	O
to	O
gdb	B-Language
,	O
and	O
COFF	O
for	O
Windows	B-Application
)	O
.	O
</s>
<s>
The	O
flags	O
to	O
compile	B-Language
with	O
debugging	O
information	O
are	O
/Zi	O
on	O
Windows	B-Application
and	O
-g	O
on	O
Linux	B-Application
.	O
</s>
<s>
Debugging	O
is	O
done	O
on	O
Windows	B-Application
using	O
the	O
Visual	B-Application
Studio	I-Application
debugger	O
and	O
,	O
on	O
Linux	B-Application
,	O
using	O
gdb	B-Language
.	O
</s>
<s>
While	O
the	O
Intel	O
compiler	B-Language
can	O
generate	O
a	O
gprof	O
compatible	O
profiling	O
output	O
,	O
Intel	O
also	O
provides	O
a	O
kernel	O
level	O
,	O
system-wide	O
statistical	O
profiler	O
called	O
Intel	B-Application
VTune	I-Application
Profiler	I-Application
.	O
</s>
<s>
VTune	B-Application
can	O
be	O
used	O
from	O
a	O
command	O
line	O
or	O
through	O
an	O
included	O
GUI	O
on	O
Linux	B-Application
or	O
Windows	B-Application
.	O
</s>
<s>
It	O
can	O
also	O
be	O
integrated	O
into	O
Visual	B-Application
Studio	I-Application
on	O
Windows	B-Application
,	O
or	O
Eclipse	B-Application
on	O
Linux	B-Application
)	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
VTune	B-Application
profiler	O
,	O
there	O
is	O
Intel	B-General_Concept
Advisor	I-General_Concept
that	O
specializes	O
in	O
vectorization	O
optimization	O
,	O
offload	O
modeling	O
,	O
flow	O
graph	O
design	O
and	O
tools	O
for	O
threading	O
design	O
and	O
prototyping	O
.	O
</s>
<s>
Regarding	O
memory	O
errors	O
,	O
it	O
helps	O
detect	O
memory	B-Error_Name
leaks	I-Error_Name
,	O
memory	O
corruption	O
,	O
allocation/de	O
-allocation	O
of	O
API	O
mismatches	O
and	O
inconsistent	O
memory	O
API	O
usage	O
.	O
</s>
<s>
Previous	O
versions	O
of	O
Intel	O
’s	O
C/C	O
++	O
compilers	B-Language
have	O
been	O
criticized	O
for	O
optimizing	O
less	O
aggressively	O
for	O
non-Intel	O
processors	O
;	O
for	O
example	O
,	O
Steve	O
Westfield	O
wrote	O
in	O
a	O
2005	O
article	O
at	O
the	O
AMD	O
website	O
:	O
</s>
<s>
This	O
vendor-specific	O
CPU	O
dispatching	O
may	O
potentially	O
impact	O
the	O
performance	O
of	O
software	O
built	O
with	O
an	O
Intel	O
compiler	B-Language
or	O
an	O
Intel	O
function	O
library	O
on	O
non-Intel	O
processors	O
,	O
possibly	O
without	O
the	O
programmer	O
’s	O
knowledge	O
.	O
</s>
<s>
This	O
has	O
allegedly	O
led	O
to	O
misleading	O
benchmarks	O
,	O
including	O
one	O
incident	O
when	O
changing	O
the	O
CPUID	O
of	O
a	O
VIA	B-Device
Nano	I-Device
significantly	O
improved	O
results	O
.	O
</s>
<s>
In	O
compliance	O
with	O
this	O
ruling	O
,	O
Intel	O
added	O
disclaimers	O
to	O
its	O
compiler	B-Language
documentation	O
:	O
</s>
<s>
As	O
late	O
as	O
2013	O
,	O
an	O
article	O
in	O
The	O
Register	O
alleged	O
that	O
the	O
object	O
code	O
produced	O
by	O
the	O
Intel	O
compiler	B-Language
for	O
the	O
AnTuTu	O
Mobile	O
Benchmark	O
omitted	O
portions	O
of	O
the	O
benchmark	O
which	O
showed	O
increased	O
performance	O
compared	O
to	O
ARM	O
platforms	O
.	O
</s>
<s>
The	O
following	O
lists	O
versions	O
of	O
the	O
Intel	B-Language
C++	I-Language
Compiler	I-Language
since	O
2003	O
:	O
</s>
<s>
Compiler	B-Language
version	O
Release	O
date	O
Major	O
new	O
features	O
Intel	B-Language
C++	I-Language
Compiler	I-Language
8.0	O
December	O
15	O
,	O
2003	O
Precompiled	O
headers	O
,	O
code-coverage	O
tools	O
.	O
</s>
<s>
Intel	B-Language
C++	I-Language
Compiler	I-Language
8.1	O
September	O
2004	O
AMD64	B-Device
architecture	O
(	O
for	O
Linux	B-Application
)	O
.	O
</s>
<s>
Intel	B-Language
C++	I-Language
Compiler	I-Language
9.0	O
June	O
14	O
,	O
2005	O
AMD64	B-Device
architecture	O
(	O
for	O
Windows	B-Application
)	O
,	O
software-based	O
speculative	O
pre-computation	O
(	O
SSP	O
)	O
optimization	O
,	O
improved	O
loop	O
optimization	O
reports	O
.	O
</s>
<s>
Intel	B-Language
C++	I-Language
Compiler	I-Language
10.0	O
June	O
5	O
,	O
2007	O
Improved	O
parallelizer	O
and	O
vectorizer	O
,	O
Streaming	O
SIMD	O
Extensions	O
4	O
(	O
SSE4	B-General_Concept
)	O
,	O
new	O
and	O
enhanced	O
optimization	O
reports	O
for	O
advanced	O
loop	O
transformations	O
,	O
new	O
optimized	O
exception	O
handling	O
implementation	O
.	O
</s>
<s>
Intel	B-Language
C++	I-Language
Compiler	I-Language
10.1	O
November	O
7	O
,	O
2007	O
New	O
OpenMP*	O
compatibility	O
runtime	O
library	O
:	O
if	O
you	O
use	O
the	O
new	O
OpenMP	B-Application
RTL	O
,	O
you	O
can	O
mix	O
and	O
match	O
with	O
libraries	O
and	O
objects	O
built	O
by	O
Visual	O
C++	B-Language
.	O
</s>
<s>
To	O
use	O
the	O
new	O
libraries	O
,	O
you	O
need	O
to	O
use	O
the	O
new	O
option	O
"	O
-Qopenmp	O
/Qopenmp	O
-lib:compat	O
"	O
on	O
Windows	B-Application
,	O
and	O
"	O
-openmp	O
-openmp-lib:compat	O
"	O
on	O
Linux	B-Application
.	O
</s>
<s>
This	O
version	O
of	O
the	O
Intel	O
compiler	B-Language
supports	O
more	O
intrinsics	O
from	O
Visual	B-Application
Studio	I-Application
2005	O
.	O
</s>
<s>
Intel	B-Language
C++	I-Language
Compiler	I-Language
11.0	O
November	O
2008	O
Initial	O
C++11	B-Language
support	O
.	O
</s>
<s>
VS2008	O
IDE	O
integration	O
on	O
Windows	B-Application
.	O
</s>
<s>
OpenMP	B-Application
3.0	O
.	O
</s>
<s>
Intel	B-Language
C++	I-Language
Compiler	I-Language
11.1	O
June	O
23	O
,	O
2009	O
Support	O
for	O
latest	O
Intel	O
SSE	O
SSE4.2	O
,	O
AVX	B-General_Concept
and	O
AES	B-Algorithm
instructions	O
.	O
</s>
<s>
Improved	O
integration	O
into	O
Microsoft	B-Application
Visual	I-Application
Studio	I-Application
,	O
Eclipse	B-Application
CDT	O
5.0	O
and	O
Mac	O
Xcode	O
IDE	O
.	O
</s>
<s>
Intel	B-Language
C++	I-Language
Composer	O
XE	O
2011	O
up	O
to	O
Update	O
5	O
(	O
compiler	B-Language
12.0	O
)	O
November	O
7	O
,	O
2010	O
Cilk	O
Plus	O
language	O
extensions	O
,	O
Guided	O
Auto-Parallelism	O
,	O
Improved	O
C++11	B-Language
support.This	O
note	O
is	O
attached	O
to	O
the	O
release	O
in	O
which	O
Cilk	O
Plus	O
was	O
introduced	O
.	O
</s>
<s>
This	O
URL	O
points	O
to	O
current	O
documentation	O
:	O
http://software.intel.com/en-us/intel-composer-xe/	O
Intel	B-Language
C++	I-Language
Composer	O
XE	O
2011	O
Update	O
6	O
and	O
above	O
(	O
compiler	B-Language
12.1	O
)	O
September	O
8	O
,	O
2011	O
Cilk	O
Plus	O
language	O
extensions	O
updated	O
to	O
support	O
specification	O
version	O
1.1	O
and	O
available	O
on	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
in	O
addition	O
to	O
Windows	B-Application
and	O
Linux	B-Application
,	O
Threading	B-Application
Building	I-Application
Blocks	I-Application
updated	O
to	O
support	O
version	O
4.0	O
,	O
Apple	O
blocks	O
supported	O
on	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
improved	O
C++11	B-Language
support	O
including	O
support	O
for	O
Variadic	O
templates	O
,	O
OpenMP	B-Application
3.1	O
support	O
.	O
</s>
