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<?xml version="1.0"?>
<!DOCTYPE flagsdescription SYSTEM "http://www.spec.org/dtd/cpuflags2.dtd">
<flagsdescription>
<filename>Dell-ic12.1-Windows</filename>
<title>SPEC CPU2006 Flag Description for the Intel(R) Compiler 12.1 on Windows for IA32 and Intel 64 Applications</title>
<!--
******************************************************************************************************
* Compilers
******************************************************************************************************
-->
<flag name="intel_icl" class="compiler" regexp="(?:/\S+/)?icl\b">
<![CDATA[
<p>Invoke the Intel C++ compiler </p>
]]>
</flag>
<flag name="intel_ifort" class="compiler" regexp="(?:/\S+/)?ifort\b">
Invoke the Intel Fortran compiler
</flag>
<flag name="intel_c99" class="compiler" regexp="(?:/\S+/)?-Qstd=c99\b">
Tells the compiler to conform to the ISO/IEC 9899:1999 International Standard.
</flag>
<flag name="intel_qvc" class="compiler" regexp="-Qvc\S+\b">
<![CDATA[
<p>
Default: <br/>
When the compiler is installed, it detects which version of Visual Studio
is on your system. Qvc defaults to the form of the option that is compatible
with that version. When multiple versions of Visual Studio are installed the
compiler installation lets you select which version you want to use. In this case, Qvc defaults to the version you choose.
</p>
<p>
This option specifies compatibility with Microsoft Visual C++ or Microsoft Visual Studio.<br/>
QVC10 - Microsoft Visual Studio 2010<br/>
QVC9 - Microsoft Visual Studio 2008<br/>
QVC8 - Microsoft Visual Studio 2005<br/>
</p>
]]>
</flag>
<!--
******************************************************************************************************
* Portability
******************************************************************************************************
-->
<flag name="f-D_Complex" class="portability" regexp="-D_Complex=">
<![CDATA[
<p> Enable complex math routines when using Microsoft Visual Studio 2005.</p>
]]>
</flag>
<flag name="f-NO_VA_COPY" class="portability" regexp="-DSPEC_CPU_NO_NEED_VA_COPY">
<![CDATA[
<p> Tell the compiler not to use the internal VA_COPY which is not needed when using
Microsoft Visual Studio 2005</p>
]]>
</flag>
<flag name="f-WIN_ICL" class="portability" regexp="-DSPEC_CPU_WINDOWS_ICL">
<![CDATA[
<p>Compile the source for the Intel compiler on Windows.</p>
]]>
</flag>
<flag name="f-Qoption-cpp" class="portability" regexp="-Qoption,cpp,\S+\b">
<![CDATA[
<p>Pass the command to the C/C++ pre-processor.</p>
]]>
</flag>
<flag name="lowercase_routine_name" class="portability" regexp="(?:/\S+/)?-names:\S+\b">
<![CDATA[
<p>
This option specifies how source code identifiers and external names are interpreted. It can be useful in mixed-language programming.
This naming convention applies whether names are being defined or referenced.
You can use the ALIAS directive to specify an alternate external name to be used when referring to external subprograms.
</p>
<p>
Arguments<br/>
keyword - Specifies how to interpret the identifiers and external names in source code.
</p>
<p>
Possible values are:
</p>
<p>
lowercase - Causes the compiler to ignore case differences in identifiers and to convert external names to lowercase. (default on Linux and MAC OS X)
</p>
<p>
uppercase - Causes the compiler to ignore case differences in identifiers and to convert external names to uppercase. (default on Windows)
</p>
<p>
as_is - Causes the compiler to distinguish case differences in identifiers and to preserve the case of external names.
</p>
]]>
</flag>
<flag name="add-underscore_to_routine_name" class="portability" regexp="(?:/\S+/)?\/assume\:underscore\b">
<![CDATA[
<p>Tell the compiler to assume that routine names end with an underscore</p>
]]>
</flag>
<flag name="F-TP" class="portability" regexp="[-/]TP">
Tell the compiler to treat source files as C++ regardless of the file extension
</flag>
<!--
******************************************************************************************************
* Optimizations
******************************************************************************************************
-->
<flag name="architecture" class="optimization" regexp="-arch:\S+\b">
<![CDATA[
<p>Determines the version of the architecture for which the compiler generates instructions.</p>
<p>Possible values for architecture are:<br/>
SSE Optimizes for Intel Pentium 4 processors with Streaming SIMD Extensions (SSE).<br/>
SSE2 Optimizes for Intel Pentium 4 processors with Streaming SIMD Extensions 2 (SSE2).</p>
<p>Default:<br/>
OFF No processor specific code is generatd by the compiler.</p>
]]>
</flag>
<flag name="f-fast" class="optimization" regexp="-fast\b">
<![CDATA[
<p>The -fast option enhances execution speed across the entire program
by including the following options that can improve run-time performance:</p>
<p style="text-indent: -45px;margin-left: 45px">
-O3 (maximum speed and high-level optimizations)</p>
<p style="text-indent: -45px;margin-left: 45px">
-Qipo (enables interprocedural optimizations across files)</p>
<p style="text-indent: -45px;margin-left: 45px">
-QxT (generate code specialized for Intel Pentium 4 processor
and compatible Intel processors with Streaming SIMD Extensions 3)</p>
<p style="text-indent: -45px;margin-left: 45px">
-Qprec-div- (disable -Qprec-div)
where -Qprec-div improves precision of FP divides (some speed impact)</p>
<p>To override one of the options set by /fast, specify that option after the
-fast option on the command line. The exception is the xP or QxP option
which can't be overridden. The options set by /fast may change from
release to release.</p>
]]>
<include flag="f-O3"/>
<include flag="f-Qipo"/>
<include flag="f-Qx_"/>
<include flag="f-Qprec-div-"/>
</flag>
<flag name="f-O1" class="optimization" regexp="-O1\b">
<![CDATA[
<p>Enables optimizations for speed and disables some optimizations that <br/>
increase code size and affect speed. <br/>
To limit code size, this option: <br/>
- Enables global optimization; this includes data-flow analysis,
code motion, strength reduction and test replacement, split-lifetime
analysis, and instruction scheduling. <br/>
- Disables intrinsic recognition and intrinsics inlining.</p>
<p>The O1 option may improve performance for applications with very large
code size, many branches, and execution time not dominated by code within loops. </p>
<p>On IA-32 Windows platforms, -O1 sets the following:<br/>
/Qunroll0, /Oi-, /Op-, /Oy, /Gy, /Os, /GF (/Qvc7 and above),<br/>
/Gf (/Qvc6 and below), /Ob2, and /Og</p>
]]>
<include flag="f-Qunroll_n"/>
<include flag="f-Oi-"/>
<include flag="f-Op-"/>
<include flag="f-Oy"/>
<include flag="f-Gy"/>
<include flag="f-Os"/>
<include flag="f-GF"/>
<include flag="f-Gf"/>
<include flag="f-Ob_n"/>
<include flag="f-Og"/>
</flag>
<flag name="f-O2" class="optimization" regexp="-O2\b">
<![CDATA[
<p>Enables optimizations for speed. This is the generally recommended
optimization level. This option also enables: <br/>
- Inlining of intrinsics<br/>
- Intra-file interprocedural optimizations, which include: <br/>
- inlining<br/>
- constant propagation<br/>
- forward substitution<br/>
- routine attribute propagation<br/>
- variable address-taken analysis<br/>
- dead static function elimination<br/>
- removal of unreferenced variables<br/>
- The following capabilities for performance gain: <br/>
- constant propagation<br/>
- copy propagation<br/>
- dead-code elimination<br/>
- global register allocation<br/>
- global instruction scheduling and control speculation<br/>
- loop unrolling<br/>
- optimized code selection<br/>
- partial redundancy elimination<br/>
- strength reduction/induction variable simplification<br/>
- variable renaming<br/>
- exception handling optimizations<br/>
- tail recursions<br/>
- peephole optimizations<br/>
- structure assignment lowering and optimizations<br/>
- dead store elimination</p>
<p>On IA-32 Windows platforms, -O2 sets the following:<br/>
/Og, /Oi-, /Os, /Oy, /Ob2, /GF (/Qvc7 and above), /Gf (/Qvc6
and below), /Gs, and /Gy.</p>
]]>
<include flag="f-Oi-"/>
<include flag="f-Gs"/>
<include flag="f-Oy"/>
<include flag="f-Gy"/>
<include flag="f-Os"/>
<include flag="f-GF"/>
<include flag="f-Gf"/>
<include flag="f-Ob_n"/>
<include flag="f-Og"/>
<include flag="f-O1"/>
</flag>
<flag name="f-O3" class="optimization" regexp="-O3\b">
<![CDATA[
<p>Enables O2 optimizations plus more aggressive optimizations,
such as prefetching, scalar replacement, and loop and memory
access transformations. Enables optimizations for maximum speed,
such as:</p>
<ul>
<li>Loop unrolling, including instruction scheduling</li>
<li>Code replication to eliminate branches</li>
<li>Padding the size of certain power-of-two arrays to allow more
efficient cache use.</li>
</ul>
<p>On Windows systems, the O3 option sets the /GF (/Qvc7 and above),
/Gf (/Qvc6 and below), and /Ob2 option.</p>
<p>On Linux and Mac OS X systems, the O3 option sets option
-fomit-frame-pointer.</p>
<p>On systems using IA-32 architecture or Intel64 architecture,
when O3 is used with options -ax or -x (Linux) or with options
/Qax or /Qx (Windows), the compiler performs more aggressive data
dependency analysis than for O2, which may result in longer compilation
times.</p>
<p>On systems using IA-64 architecture, the O3 option enables optimizations
for technical computing applications (loop-intensive code): loop\
optimizations and data prefetch.</p>
<p>The O3 optimizations may not cause higher performance unless loop and
memory access transformations take place. The optimizations may slow
down code in some cases compared to O2 optimizations.<br/>
The O3 option is recommended for applications that have loops that heavily
use floating-point calculations and process large data sets.</p>
]]>
<include flag="f-GF"/>
<include flag="f-Gf"/>
<include flag="f-Ob_n"/>
<include flag="f-O2"/>
</flag>
<flag name="f-Qansi-alias" class="optimization" regexp="-Qansi-alias\b">
<![CDATA[
<p>This option tells the compiler to assume that the program adheres to
ISO C Standard aliasability rules.</p>
<p>If your program adheres to these rules, then this option allows the compiler
to optimize more aggressively. If it doesn't adhere to these rules, then
it can cause the compiler to generate incorrect code.</p>
]]>
</flag>
<flag name="f-Qauto-ilp32" class="optimization" regexp="-Qauto-ilp32">
<![CDATA[
<p>This option instructs the compiler to analyze and transform the program so that
64-bit pointers are shrunk to 32-bit pointers, and 64-bit longs (on Linux) are
shrunk into 32-bit longs wherever it is legal and safe to do so. In order for
this option to be effective the compiler must be able to optimize using the
-ipo/-Qipo option and must be able to analyze all library/external calls the
program makes.</p>
<p>This option requires that the size of the program executable never exceeds 2**32 bytes
and all data values can be represented within 32 bits. If the program can run
correctly in a 32-bit system, these requirements are implicitly satisfied. If
the program violates these size restrictions, unpredictable behavior might occur.</p>
]]>
</flag>
<flag name="f-Qauto" class="optimization" regexp="-Qauto">
<![CDATA[
<p>This option places local variables, except those declared as SAVE, to the run-time stack.
It is as if the variables were declared with the AUTOMATIC attribute.</p>
<p>It does not affect variables that have the SAVE attribute or ALLOCATABLE attribute,
or variables that appear in an EQUIVALENCE statement or in a common block.</p>
<p>This option may provide a performance gain for your program, but if your program depends
on variables having the same value as the last time the routine was invoked, your program
may not function properly.<br/>
If you want to cause variables to be placed in static memory, specify /Qsave (Windows).</p>
]]>
</flag>
<flag name="f-Qcxx-features" class="optimization" regexp="-Qcxx-features\b">
<![CDATA[
<p>
Enable C++ Exception Handling and RTTI
</p>
<p>
This option enables standard C++ features without disabling Microsoft features within the bounds
of what is provided in the Microsoft headers and libraries.
</p>
<p>
This option has the same effect as specifying /GX /GR.
</p>
]]>
<include flag="f-GX"/>
<include flag="f-GR"/>
</flag>
<flag name="f-Qinline-calloc" class="optimization" regexp="-Qinline-calloc\b">
<![CDATA[
<p>
This option tells the compiler to inline calls to calloc() as calls to malloc() and memset().
This enables additional memset() optimizations. For example, it can enable inlining as a sequence
of store operations when the size is a compile time constant.
</p>
]]>
</flag>
<flag name="f-Qip" class="optimization" regexp="-Qip\b">
<![CDATA[
<p>This option enables additional interprocedural optimizations for single
file compilation. These optimizations are a subset of full intra-file
interprocedural optimizations. One of these optimizations enables the
compiler to perform inline function expansion for calls to functions
defined within the current source file.</p>
]]>
</flag>
<flag name="f-Qipo" class="optimization" regexp="-Qipo\b">
<![CDATA[
<p>Multi-file ip optimizations that includes:<br/>
- inline function expansion<br/>
- interprocedural constant propogation<br/>
- dead code elimination<br/>
- propagation of function characteristics<br/>
- passing arguments in registers<br/>
- loop-invariant code motion</p>
]]>
</flag>
<flag name="f-Qopt-ra-region-strat" class="optimization" regexp="-Qopt-ra-region-strategy=\S+\b">
<![CDATA[
<p>Method used for partitioning. Possible values are:<br/>
routine: Creates a single region for each routine.<br/>
block: Partitions each routine into one region per basic block. <br/>
trace: Partitions each routine into one region per trace. <br/>
region: Partitions each routine into one region per loop.<br/>
default: The compiler determines which method is used for partitioning.</p>
<p>This option selects the method that the register allocator uses to partition each routine into regions.
When setting default is in effect, the compiler attempts to optimize the tradeoff between compile-time
performance and generated code performance.<br/>
This option is only relevant when optimizations are enabled (O1 or higher).</p>
]]>
</flag>
<flag name="f-Qopt-multi-version-aggressive" class="optimization" regexp="-Qopt-multi-version-aggressive">
<![CDATA[
<p>This option tells the compiler to use aggressive multi-versioning to check
for pointer aliasing and scalar replacement.</p>
]]>
</flag>
<flag name="f-Qopt-streaming-stores" class="optimization" regexp="-Qopt-streaming-stores\S+\b">
<![CDATA[
<p>Specifies whether streaming stores are generated.</p>
<p>Possible values are:<br/>
always: Enables generation of streaming stores for optimization. The compiler optimizes under the assumption that the application is memory bound.<br/>
never : Disables generation of streaming stores for optimization. Normal stores are performed.<br/>
auto : Lets the compiler decide which instructions to use.</p>
]]>
</flag>
<flag name="f-Qparallel" class="optimization" parallel="yes" regexp="-Qparallel\b">
<![CDATA[
<p>This option tells the auto-parallelizer to generate multithreaded code for loops
that can be safely executed in parallel.<br/>
To use this option, you must also specify option O2 or O3.</p>
]]>
</flag>
<flag name="f-Qpar-runtime" class="optimization" regexp="-Qpar-runtime-control">
<![CDATA[
<p>This option generates code to perform run-time checks for loops that have symbolic loop bounds.<br/>
If the granularity of a loop is greater than the parallelization threshold, the loop will be executed in parallel.<br/>
If you do not specify this option, the compiler may not parallelize loops wit symbolic loop bounds if
the compile-time granularity estimation of a loop can not ensure it is beneficial to parallelize the loop.<br/>
-Qpar-runtime-control - disables this feature. (default)</p>
]]>
</flag>
<flag name="f-Qopt-prefetch" class="optimization" regexp="-Qopt-prefetch\b">
<![CDATA[
<p>This option enables or disables prefetch insertion optimization. The goal
of prefetching is to reduce cache misses by providing hints to the processor
about when data should be loaded into the cache.</p>
<p>On IA-32 architecture and Intel 64 architecture, this option enables prefetching
when higher optimization levels are specified.</p>
]]>
</flag>
<flag name="f-Qprec-div-" class="optimization" regexp="-Qprec-div.">
<![CDATA[
<p>This option improves precision of floating-point divides.
It has a slight impact on speed.</p>
<p>With some optimizations, such as -xSSE2 (Linux) or /QxSSE2 (Windows),
the compiler may change floating-point division computations into multiplication
by the reciprocal of the denominator. For example, A/B is computed as A * (1/B) to
improve the speed of the computation.</p>
<p>However, sometimes the value produced by this transformation is not as
accurate as full IEEE division. When it is important to have fully precise
IEEE division, use this option to disable the floating-point
division-to-multiplication optimization. The result is more accurate, with
some loss of performance.</p>
<p>If you specify -no-prec-div (Linux and Mac OS X) or /Qprec-div- (Windows),
it enables optimizations that give slightly less precise results than full
IEEE division.</p>
<p>Default: -prec-div or/Qprec-div</p>
]]>
</flag>
<flag name="f-Qprof_gen" class="optimization" regexp="-Qprof_gen\b">
<![CDATA[
<p>Instrument program for profiling for the first phase of
two-phase profile guided otimization. This instrumentation gathers information
about a program's execution paths and data values but does not gather
information from hardware performance counters. The profile instrumentation
also gathers data for optimizations which are unique to profile-feedback
optimization.</p>
]]>
</flag>
<flag name="f-Qprof_use" class="optimization" regexp="-Qprof_use\b">
<![CDATA[
<p>Instructs the compiler to produce a profile-optimized
executable and merges available dynamic information (.dyn)
files into a pgopti.dpi file. If you perform multiple
executions of the instrumented program, -Qprof_use merges
the dynamic information files again and overwrites the
previous pgopti.dpi file.<br/>
Without any other options, the current directory is
searched for .dyn files</p>
]]>
</flag>
<flag name="f-Qscalar-rep" class="optimization" regexp="-Qscalar-rep.">
<![CDATA[
<p>This option enables scalar replacement performed during loop transformation.
To use this option, you must also specify O3.</p>
<p>-Qscalar-rep- disables this feature. (default)</p>
]]>
</flag>
<flag name="f-Qvec-guard-wrt" class="optimization" regexp="-Qvec-guard-write">
<![CDATA[
<p>This option tells the compiler to perform a conditional check in a vectorized loop.<br/>
This checking avoids unnecessary stores and may improve performance.</p>
<p>-Qvec-guard-write- disables this feature. (default)</p>
]]>
</flag>
<flag name="f-Qunroll_n" class="optimization" regexp="-Qunroll\d+\b">
<![CDATA[
<p>Tells the compiler the maximum number of times to unroll loops.<br/>
If you do not specify n, the optimizer determines how many times loops can be unrolled.</p>
]]>
</flag>
<flag name="f-Qunroll_aggr" class="optimization" regexp="-Qunroll-aggressive">
<![CDATA[
<p>This option tells the compiler to use aggressive, complete unrolling for loops with small constant trip counts.<br/>
This option may improve performance.</p>
<p>By default, this feature is OFF.</p>
]]>
</flag>
<flag name="f-Qx_" class="optimization" regexp="-Qx\S+\b">
<![CDATA[
<p>Tells the compiler to generate optimized code specialized for the Intel processor
that executes your program.<br/>
Syntax -Qx(processor)</p>
<p>(processor)indicates the processor for which code is generated. Many of the
following descriptions refer to Intel® Streaming SIMD Extensions</p>
<p style="text-indent: -20px;margin-left: 20px">
Host<br/>
Can generate instructions for the highest instruction set available on the compilation
host processor.<br/>
On Intel processors, this may correspond to the most suitable –x (Linux* and Mac OS* X)
or /Qx (Windows*) option. On non-Intel processors, this may correspond to the most suitable
–m (Linux and Mac OS X) or /arch (Windows) option. The resulting executable may not run on
a processor different from the host in the following cases:<br/>
If the processor does not support all of the instructions supported by the host processor.<br/>
If the host is an Intel processor and the other processor is a non-Intel processor.</p>
<p style="text-indent: -20px;margin-left: 20px">
AVX<br/>
Optimizes for Intel processors that support Intel® Advanced Vector Extensions (Intel® AVX).</p>
<p style="text-indent: -20px;margin-left: 20px">
SSE4.2<br/>
Can generate Intel® SSE4 Efficient Accelerated String and Text Processing instructions
supported by Intel® Core™ i7 processors. Can generate Intel® SSE4 Vectorizing Compiler
and Media Accelerator, Intel® SSSE3, SSE3, SSE2, and SSE instructions and it can optimize
for the Intel® Core™ processor family.</p>
<p style="text-indent: -20px;margin-left: 20px">
SSE4.1<br/>
Can generate Intel® SSE4 Vectorizing Compiler and Media Accelerator instructions for
Intel processors. Can generate Intel® SSSE3, SSE3, SSE2, and SSE instructions and it
can optimize for Intel® 45nm Hi-k next generation Intel® Core™ microarchitecture.
This replaces value S, which is deprecated.</p>
<p style="text-indent: -20px;margin-left: 20px">
SSE3_ATOM<br/>
Optimizes for the Intel® Atom™ processor and Intel® Centrino® Atom™ Processor Technology.
Can generate MOVBE instructions, depending on the setting of option -minstruction
(Linux and Mac OS) or /Qinstruction (Windows).</p>
<p style="text-indent: -20px;margin-left: 20px">
SSSE3<br/>
Can generate Intel® SSSE3, SSE3, SSE2, and SSE instructions for Intel processors and it
can optimize for the Intel® Core™2 Duo processor family. For Mac OS* X systems, this
value is only supported on Intel® 64 architecture. This replaces value T, which is
deprecated.</p>
<p style="text-indent: -20px;margin-left: 20px">
SSE3<br/>
Can generate Intel® SSE3, SSE2, and SSE instructions for Intel processors and it can
optimize for processors based on Intel® Core™ microarchitecture and Intel
NetBurst® microarchitecture. For Mac OS* X systems, this value is only supported on
IA-32 architecture.This replaces value P, which is deprecated.</p>
<p style="text-indent: -20px;margin-left: 20px">
SSE2<br/>
Can generate Intel® SSE2 and SSE instructions for Intel processors, and it can
optimize for Intel® Pentium® 4 processors, Intel® Pentium® M processors, and
Intel® Xeon® processors with Intel® SSE2. This value is not available on Mac OS* X
systems. This replaces value N, which is deprecated.</p>
<p>Default<br/>
Windows systems: None<br/>
Linux systems: None<br/>
Mac OS X systems using IA-32 architecture: SSE3<br/>
Mac OS X systems using Intel® 64 architecture: SSSE3<br/>
On Windows systems, if neither /Qx nor /arch is specified, the default is /arch:SSE2.<br/>
On Linux systems, if neither -x nor -m is specified, the default is -msse2.</p>
<p>Description<br/>
This option tells the compiler to generate optimized code specialized for the Intel
processor that executes your program. It also enables optimizations in addition to
Intel processor-specific optimizations. The specialized code generated by this
option may run only on a subset of Intel processors.</p>
<p>This option can enable optimizations depending on the argument specified. For example,
it may enable Intel® Streaming SIMD Extensions 4 (Intel® SSE4), Intel® Supplemental
Streaming SIMD Extensions 3 (Intel® SSSE3), Intel® Streaming SIMD Extensions 3
(Intel® SSE3), Intel® Streaming SIMD Extensions 2 (Intel® SSE2), or
Intel® Streaming SIMD Extensions (Intel® SSE) instructions.</p>
<p>The binaries produced by these values will run on Intel processors that support
all of the features for the targeted processor. For example, binaries produced
with SSE3 will run on an Intel® Core™ 2 Duo processor, because that processor
completely supports all of the capabilities of the Intel® Pentium® 4 processor,
which the SSE3 value targets. Specifying the SSSE3 value has the potential of
using more features and optimizations available to the Intel® Core™ 2 Duo processor.</p>
<p>Do not use processor values to create binaries that will execute on a processor
that is not compatible with the targeted processor. The resulting program may fail
with an illegal instruction exception or display other unexpected behavior.
For example, binaries produced with SSE3 may produce code that will not run on
Intel® Pentium® III processors or earlier processors that do not support SSE3
instructions.</p>
<p>Compiling the function main() with any of the processor values produces
binaries that display a fatal run-time error if they are executed on unsupported
processors. For more information, see Optimizing Applications.</p>
<p>If you specify more than one processor value, code is generated for only the
highest-performing processor specified. The highest-performing to lowest-performing
processor values are: SSE4.2, SSE4.1, SSSE3, SSE3, SSE2.Note that processor
values AVX and SSE3_ATOM do not fit within this group.</p>
<p>Compiler options m and arch produce binaries that should run on processors not made by
Intel that implement the same capabilities as the corresponding Intel processors.</p>
<p>Previous value O is deprecated and has been replaced by option -msse3 (Linux and Mac OS X)
and option /arch:SSE3 (Windows).</p>
<p>Previous values W and K are deprecated. The details on replacements are as follows:</p>
<ul>
<li>Mac OS X systems: On these systems, there is no exact replacement for W or K.
You can upgrade to the default option -msse3 (IA-32 architecture) or option -mssse3
(Intel® 64 architecture).</li>
<li>Windows and Linux systems: The replacement for W is -msse2 (Linux) or
/arch:SSE2 (Windows).</li>
</ul>
<p>There is no exact replacement for K. However, on Windows systems, /QxK is
interpreted as /arch:IA32; on Linux systems, -xK is interpreted as -mia32.
You can also do one of the following:</p>
<ul>
<li>Upgrade to option -msse2 (Linux) or option /arch:SSE2 (Windows).
This will produce one code path that is specialized for Intel® SSE2.
It will not run on earlier processors.</li>
<li>Specify the two option combination -mia32 -axSSE2 (Linux) or /arch:IA32
/QaxSSE2 (Windows). This combination will produce an executable that runs
on any processor with IA-32 architecture but with an additional specialized
Intel® SSE2 code path.</li>
</ul>
<p>The -x and /Qx options enable additional optimizations not enabled with option -m
or option /arch.</p>
<p>On Windows* systems, options /Qx and /arch are mutually exclusive. If both are
specified, the compiler uses the last one specified and generates a warning.
Similarly, on Linux* and Mac OS* X systems, options -x and -m are mutually exclusive.
If both are specified, the compiler uses the last one specified and generates a warning.</p>
]]>
</flag>
<flag name="f-GX" class="optimization" regexp="-GX\b">
<![CDATA[
<p>This option enables C++ exception handling.</p>
]]>
</flag>
<flag name="f-GR" class="optimization" regexp="-GR\b">
<![CDATA[
<p>Enables C++ Run Time Type Information (RTTI).</p>
]]>
</flag>
<flag name="link_force_multiple1" class="optimization" regexp="\b\-Fe\$\@\-link\b">
<![CDATA[
<p>Enable SmartHeap library usage by forcing the linker to
ignore multiple definitions</p>
]]>
</flag>
<flag name="link_force_multiple2" class="optimization" regexp=".*FORCE.*MULTIPLE\b">
<![CDATA[
<p>Enable SmartHeap library usage by forcing the linker to
ignore multiple definitions</p>
]]>
</flag>
<flag name="SmartHeap32" class="optimization" regexp="shlw32m.lib\b">
<![CDATA[
<p>32-bit MicroQuill SmartHeap Library 8.0 for Windows available from http://www.microquill.com/</p>
]]>
</flag>
<flag name="SmartHeap32-T" class="optimization" regexp="shlw32mt.lib\b">
<![CDATA[
<p>32-bit MicroQuill SmartHeap Library 8.0 for Windows available from http://www.microquill.com/<br/>
This library is the thread-safe version.</p>
]]>
</flag>
<flag name="SmartHeapx64" class="optimization" regexp="shlw64m.lib\b">
<![CDATA[
<p>64-bit MicroQuill SmartHeap Library 8.0 for Windows available from http://www.microquill.com/</p>
]]>
</flag>
<flag name="SmartHeapx64-T" class="optimization" regexp="shlw64mt.lib\b">
<![CDATA[
<p>64-bit MicroQuill SmartHeap Library 8.0 for Windows available from http://www.microquill.com/<br/>
This library is the thread-safe version.</p>
]]>
</flag>
<flag name="ic-libguide" class="optimization" regexp="libguide40.lib\b">
<![CDATA[
<p>Library which manages the auto parallel feature/</p>
]]>
</flag>
<flag name="set_stack_space" class="optimization" regexp="(?:/\S+/)?/F\d*">
<![CDATA[
<p>set the stack reserve amount specified to the linker.</p>
]]>
</flag>
<flag name="f-Oa" class="optimization" regexp="-Oa\b">
<![CDATA[
<p>This option tells the compiler to assume there is no aliasing.</p>
]]>
</flag>
<flag name="f-Oi-" class="optimization" regexp="-Oi-\b">
<![CDATA[
<p>Disables inline expansion of all intrinsic functions.</p>
]]>
</flag>
<flag name="f-Op-" class="optimization" regexp="-Oi-\b">
<![CDATA[
<p>Disables conformance to the ANSI C and IEEE 754 standards for
floating-point arithmetic.</p>
]]>
</flag>
<flag name="f-Oy" class="optimization" regexp="-Oy\b">
Allows use of EBP as a general-purpose register in optimizations.
</flag>
<flag name="f-Os" class="optimization" regexp="-Os\b">
<![CDATA[
<p>This option enables most speed optimizations, but disables some
that increase code size for a small speed benefit.</p>
]]>
</flag>
<flag name="f-Og" class="optimization" regexp="-Og\b">
This option enables global optimizations.
</flag>
<flag name="f-Ob_n" class="optimization" regexp="-Ob(0|1|2)\b">
<![CDATA[
<p>Specifies the level of inline function expansion.</p>
<p style="text-indent: -45px;margin-left: 45px">
Ob0 - Disables inlining of user-defined functions. Note that
statement functions are always inlined.</p>
<p style="text-indent: -45px;margin-left: 45px">
Ob1 - Enables inlining when an inline keyword or an inline
attribute is specified. Also enables inlining according
to the C++ language.</p>
<p style="text-indent: -45px;margin-left: 45px">
Ob2 - Enables inlining of any function at the compiler's
discretion. </p>
]]>
</flag>
<flag name="f-Gy" class="optimization" regexp="-Gy\b">
<![CDATA[
<p>This option tells the compiler to separate functions into COMDATs
for the linker.</p>
]]>
</flag>
<flag name="f-GF" class="optimization" regexp="-GF\b">
This option enables read only string-pooling optimization.
</flag>
<flag name="f-Gf" class="optimization" regexp="-Gf\b">
This option enables read/write string-pooling optimization.
</flag>
<flag name="f-Gs" class="optimization" regexp="-Gs\b">
<![CDATA[
<p>This option disables stack-checking for routines with 4096 bytes
of local variables and compiler temporaries.</p>
]]>
</flag>
</flagsdescription>
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