sfgraph/d4dag/icc.sh

#!/bin/sh -x
$HOME/intel/oneapi/compiler/latest/linux/bin/intel64/icc --version
$HOME/intel/oneapi/compiler/latest/linux/bin/intel64/icc -m64 -c -Wall -S -fverbose-asm  -qopt-report-embed  d4dag.c
$HOME/intel/oneapi/compiler/latest/linux/bin/intel64/icc -m64 -Wall d4dag.c main.c -o main
exit 0
with older icc this generated control flow data
 -mP20P2_il0_print=6 

                          Intel(R) C++ Compiler Help
                          ==========================

  Intel(R) Compiler includes compiler options that optimize for instruction
  sets that are available in both Intel(R) and non-Intel microprocessors, but
  may perform additional optimizations for Intel microprocessors than for
  non-Intel microprocessors.  In addition, certain compiler options for
  Intel(R) Compiler are reserved for Intel microprocessors.  For a detailed
  description of these compiler options, including the instructions they
  implicate, please refer to "Intel(R) Compiler User and Reference Guides >
  Compiler Options."

  usage: icc [options] file1 [file2 ...]
         icpc [options] file1 [file2 ...]

     where options represents zero or more compiler options

     fileN is a C/C++ source (.C .c .cc .cpp .cxx .c++ .i .ii),
     assembly (.s .S), object (.o), static library (.a), or other
     linkable file

     The icpc command uses the same compiler options as the
     icc command.  Invoking the compiler using icpc
     compiles .c and .i files as C++.  Invoking the compiler using
     icc compiles .c and .i files as C.  Using icpc
     always links in C++ libraries.  Using icc only
     links in C++ libraries if C++ source is provided on the command line.

     Commonly used options may be placed in the icc .cfg file.

   Some options listed are only available on a specific system
   i32    indicates the feature is available on systems based on IA-32
          architecture
   i64em  indicates the feature is available on systems using Intel(R) 64
          architecture

                             Compiler Option List
                             --------------------

Optimization
------------

-O1       optimize for maximum speed, but disable some optimizations which
          increase code size for a small speed benefit
-O2       optimize for maximum speed (DEFAULT)
-O3       optimize for maximum speed and enable more aggressive optimizations
          that may not improve performance on some programs
-O        same as -O2
-Os       enable speed optimizations, but disable some optimizations which
          increase code size for small speed benefit 
-O0       disable optimizations
-Ofast    enable -O3 -no-prec-div -fp-model fast=2 optimizations
-fno-alias
          assume no aliasing in program
-fno-fnalias
          assume no aliasing within functions, but assume aliasing across calls
-f[no-]builtin
          disable inline expansion of intrinsic functions
-fno-builtin-<func>
          disable the <func> intrinsic
-ffunction-sections
          separate functions for the linker (COMDAT)
-fdata-sections
          place each data item into its own section
-f[no-]defer-pop
          disable optimizations which may result in
          deferred clearance of the stack arguments
-nolib-inline
          disable inline expansion of intrinsic functions
-f[no-]optimize-sibling-calls
          Optimize sibling and tail recursive calls.
          Enabled at levels -O2, -O3, -Os.
-f[no-]protect-parens
          enable/disable(DEFAULT) a reassociation optimization for REAL
          and COMPLEX expression evaluations by not honoring parenthesis
-qsimd-honor-fp-model
          enforces the selected fp-model in SIMD loops.
          Specify -qno-simd-honor-fp-model(DEFAULT) to override
          the fp-model in SIMD loops.
-qsimd-serialize-fp-reduction
          serializes FP reductions for improved floating point consistency in
          SIMD loops while allowing the rest of the loop to be vectorized.
          Default is -qno-simd-serialize-fp-reduction

Code Generation
---------------

-x<code>  generate specialized code to run exclusively on processors
          indicated by <code> as described below
            SSE2    May generate Intel(R) SSE2 and SSE instructions for Intel
                    processors.  Optimizes for the Intel NetBurst(R)
                    microarchitecture.
            SSE3    May generate Intel(R) SSE3, SSE2, and SSE instructions for
                    Intel processors.  Optimizes for the enhanced Pentium(R) M
                    processor microarchitecture and Intel NetBurst(R)
                    microarchitecture.
            SSSE3   May generate Intel(R) SSSE3, SSE3, SSE2, and SSE
                    instructions for Intel processors.  Optimizes for the
                    Intel(R) Core(TM) microarchitecture.
            SSE4.1  May generate Intel(R) SSE4 Vectorizing Compiler and Media
                    Accelerator instructions for Intel processors.  May
                    generate Intel(R) SSSE3, SSE3, SSE2, and SSE instructions
                    and it may optimize for Intel(R) 45nm Hi-k next generation
                    Intel Core(TM) microarchitecture.
            SSE4.2  May generate Intel(R) SSE4 Efficient Accelerated String
                    and Text Processing instructions supported by Intel(R)
                    Core(TM) i7 processors.  May generate Intel(R) SSE4
                    Vectorizing Compiler and Media Accelerator, Intel(R) SSSE3,
                    SSE3, SSE2, and SSE instructions and it may optimize for
                    the Intel(R) Core(TM) processor family.
            AVX     May generate Intel(R) Advanced Vector Extensions (Intel(R)
                    AVX), Intel(R) SSE4.2, SSE4.1, SSSE3, SSE3,
                    SSE2, and SSE instructions for Intel(R) processors.
            CORE-AVX2
                    May generate Intel(R) Advanced Vector Extensions 2
                    (Intel(R) AVX2), Intel(R) AVX, SSE4.2, SSE4.1, SSSE3, SSE3,
                    SSE2, and SSE instructions for Intel(R) processors.
            CORE-AVX-I
                    May generate Intel(R) Advanced Vector Extensions (Intel(R)
                    AVX), including instructions in Intel(R) Core 2(TM)
                    processors in process technology smaller than 32nm,
                    Intel(R) SSE4.2, SSE4.1, SSSE3, SSE3, SSE2, and SSE
                    instructions for Intel(R) processors.
            ATOM_SSE4.2
                    May generate MOVBE instructions for Intel(R) processors,
                    depending on the setting of option -minstruction.
                    May also generate Intel(R) SSE4.2, SSE3, SSE2, and SSE
                    instructions for Intel processors. Optimizes for Intel(R)
                    Atom(TM) processors that support Intel(R) SSE4.2 and MOVBE
                    instructions.
            ATOM_SSSE3
                    May generate MOVBE instructions for Intel(R) processors,
                    depending on the setting of option -minstruction.
                    May also generate Intel(R) SSSE3, SSE3, SSE2, and SSE
                    instructions for Intel processors. Optimizes for the
                    Intel(R) Atom(TM) processor that support Intel(R) SSE
                    and MOVBE instructions.
            MIC-AVX512
                    May generate Intel(R) Advanced Vector Extensions 512
                    (Intel(R) AVX-512) Foundation instructions, Intel(R)
                    AVX-512 Conflict Detection instructions, Intel(R) AVX-512
                    Exponential and Reciprocal instructions, Intel(R) AVX-512
                    Prefetch instructions for Intel(R) processors, and the
                    instructions enabled with CORE-AVX2. Optimizes for Intel(R)
                    processors that support Intel(R) AVX-512 instructions.
            KNM
                    May generate Quad Fused Multiply Add (QFMA) and Quad
                    Virtual Neural Network Instruction (QVNNI) and the
                    instructions enabled with MIC-AVX512. Optimizes for
                    Intel(R) Xeon Phi(TM) product family processor code named
                    Knights Mill.
            CORE-AVX512
                    May generate Intel(R) Advanced Vector Extensions 512
                    (Intel(R) AVX-512) Foundation instructions, Intel(R)
                    AVX-512 Conflict Detection instructions, Intel(R) AVX-512
                    Doubleword and Quadword instructions, Intel(R) AVX-512
                    Byte and Word instructions and Intel(R) AVX-512 Vector
                    Length Extensions for Intel(R) processors, and the
                    instructions enabled with CORE-AVX2. Optimizes for Intel(R)
                    processors that support Intel(R) AVX-512 instructions.
            COMMON-AVX512
                    May generate Intel(R) Advanced Vector Extensions 512
                    (Intel(R) AVX-512) Foundation instructions, Intel(R)
                    AVX-512 Conflict Detection instructions, as well as the
                    instructions enabled with CORE-AVX2. Optimizes for Intel(R)
                    processors that support Intel(R) AVX-512 instructions.
            BROADWELL
            CANNONLAKE
            HASWELL
            ICELAKE-CLIENT (or ICELAKE)
            ICELAKE-SERVER
            IVYBRIDGE
            KNL
            KNM
            SANDYBRIDGE
            SILVERMONT
            GOLDMONT
            GOLDMONT-PLUS
            TREMONT
            SKYLAKE
            SKYLAKE-AVX512
            CASCADELAKE
            KABYLAKE
            COFFEELAKE
            AMBERLAKE
            WHISKEYLAKE
            TIGERLAKE
            SAPPHIRERAPIDS
                    May generate instructions for processors that support the
                    specified Intel(R) microarchitecture code name. Optimizes
                    for Intel(R) processors that support the specified Intel(R)
                    microarchitecture code name.
                    Keywords KNL and SILVERMONT are only available on Windows*
                    and Linux* systems.
-xHost    generate instructions for the highest instruction set and processor
          available on the compilation host machine
-ax<code1>[,<code2>,...]
          generate code specialized for processors specified by <codes>
          while also generating generic IA-32 instructions.
          <codes> includes one or more of the following:
            SSE2    May generate Intel(R) SSE2 and SSE instructions for Intel
                    processors.
            SSE3    May generate Intel(R) SSE3, SSE2, and SSE instructions for
                    Intel processors.
            SSSE3   May generate Intel(R) SSSE3, SSE3, SSE2, and SSE
                    instructions for Intel processors.
            SSE4.1  May generate Intel(R) SSE4.1, SSSE3, SSE3, SSE2, and SSE
                   instructions for Intel processors.
            SSE4.2  May generate Intel(R) SSE4.2, SSE4.1, SSSE3, SSE3, SSE2,
                    and SSE instructions for Intel processors.
            AVX     May generate Intel(R) Advanced Vector Extensions (Intel(R)
                    AVX), Intel(R) SSE4.2, SSE4.1, SSSE3, SSE3,
                    SSE2, and SSE instructions for Intel(R) processors.
            CORE-AVX2
                    May generate Intel(R) Advanced Vector Extensions 2
                    (Intel(R) AVX2), Intel(R) AVX, SSE4.2, SSE4.1, SSSE3, SSE3,
                    SSE2, and SSE instructions for Intel(R) processors.
            CORE-AVX-I
                    May generate Intel(R) Advanced Vector Extensions (Intel(R)
                    AVX), including instructions in Intel(R) Core 2(TM)
                    processors in process technology smaller than 32nm,
                    Intel(R) SSE4.2, SSE4.1, SSSE3, SSE3, SSE2, and SSE
                    instructions for Intel(R) processors.
            CORE-AVX512
                    May generate Intel(R) Advanced Vector Extensions 512
                    (Intel(R) AVX-512) Foundation instructions, Intel(R)
                    AVX-512 Conflict Detection instructions, Intel(R) AVX-512
                    Doubleword and Quadword instructions, Intel(R) AVX-512
                    Byte and Word instructions and Intel(R) AVX-512 Vector
                    Length Extensions for Intel(R) processors, and the
                    instructions enabled with CORE-AVX2.
            BROADWELL
            CANNONLAKE
            HASWELL
            ICELAKE-CLIENT (or ICELAKE)
            ICELAKE-SERVER
            IVYBRIDGE
            KNL
            KNM
            SANDYBRIDGE
            SILVERMONT
            GOLDMONT
            GOLDMONT-PLUS
            TREMONT
            SKYLAKE
            SKYLAKE-AVX512
            CASCADELAKE
            KABYLAKE
            COFFEELAKE
            AMBERLAKE
            WHISKEYLAKE
            TIGERLAKE
            SAPPHIRERAPIDS
                    May generate instructions for processors that support the
                    specified Intel(R) microarchitecture code name. Optimizes
                    for Intel(R) processors that support the specified Intel(R)
                    microarchitecture code name.
                    Keywords KNL and SILVERMONT are only available on Windows*
                    and Linux* systems.

            MIC-AVX512
                    May generate Intel(R) Advanced Vector Extensions 512
                    (Intel(R) AVX-512) Foundation instructions, Intel(R)
                    AVX-512 Conflict Detection instructions, Intel(R) AVX-512
                    Exponential and Reciprocal instructions, Intel(R) AVX-512
                    Prefetch instructions for Intel(R) processors, and the
                    instructions enabled with CORE-AVX2.
            KNM
                    May generate Quad Fused Multiply Add (QFMA) and Quad
                    Virtual Neural Network Instruction (QVNNI) and the
                    instructions enabled with MIC-AVX512
-mcpu=<cpu>
          same as -mtune=<cpu>
-mtune=<cpu>
          optimize for a specific <cpu>
            generic    - Optimizes code for the compiler's default behavior
            broadwell
            haswell
            ivybridge
            knl
            knm
            sandybridge
            silvermont
            cannonlake
            icelake
            skylake-avx512
            skylake    - Optimizes code for processors that support the
                         specified Intel(R) microarchitecture code name.
                         knl and silvermont are only available on Windows* and
                         Linux* systems
            core-avx2  - Optimizes code for processors that support Intel(R)
                         Advanced Vector Extensions 2 (Intel(R) AVX2), Intel(R)
                         AVX, SSE4.2 SSE4.1, SSE3, SSE2, SSE, and SSSE3
                         instructions
            core-avx-i - Optimizes code for processors that support Float-16
                         conversion instructions and the RDRND instruction,
                         Intel(R) Advanced Vector Extensions (Intel(R) AVX),
                         Intel(R) SSE4.2, SSE4.1, SSE3, SSE2, SSE, and SSSE3
                         instructions
            corei7-avx - Optimizes code for processors that support Intel(R)
                         Advanced Vector Extensions (Intel(R) AVX), Intel(R)
                         SSE4.2, SSE4.1, SSE3, SSE2, SSE, and SSSE3
                         instructions
            corei7     - Optimizes code for processors that support Intel(R)
                         SSE4 Efficient Accelerated String and Text Processing
                         instructions. May also generate code for Intel(R) SSE4
                         Vectorizing Compiler and Media Accelerator, Intel(R)
                         SSE3, SSE2, SSE, and SSSE3 instructions
            atom       - Optimizes code for processors that support MOVBE
                         instructions, depending on the setting of option
                         -minstruction (Linux and macOS*) or /Qinstruction
                         (Windows). May also generate code for SSSE3
                         instructions and Intel(R) SSE3, SSE2, and SSE
                         instructions
            core2      - Optimizes for the Intel(R) Core(TM) 2 processor
                         family, including support for MMX(TM), Intel(R) SSE,
                         SSE2, SSE3, and SSSE3 instruction sets.
            pentium-mmx - Optimizes for Intel(R) Pentium(R) with MMX technology
            pentiumpro - Optimizes for Intel(R) Pentium(R) Pro, Intel Pentium
                         II, and Intel Pentium III processors
            pentium4m  - Optimizes for Intel(R) Pentium(R) 4 processors with
                         MMX technology
            pentium-m
            pentium4
            pentium3
            pentium    - Optimizes code for Intel(R) Pentium(R) processors.
                         Value pentium3 is only available on Linux systems
-march=<cpu>
          generate code exclusively for a given <cpu>
            broadwell
            cannonlake
            haswell
            icelake
            ivybridge
            knl
            knm
            sandybridge
            silvermont
            skylake-avx512
            skylake    - Generates code for processors that support the
                         specified Intel(R) microarchitecture code name.
                         Keywords knl and silvermont are only available on
                         Linux* systems.
            core-avx2  - Generates code for processors that support Intel(R)
                         Advanced Vector Extensions 2 (Intel(R) AVX2), Intel(R)
                         AVX, SSE4.2 SSE4.1, SSE3, SSE2, SSE, and SSSE3
                         instructions
            core-avx-i - Generates code for processors that support Float-16
                         conversion instructions and the RDRND instruction,
                         Intel(R) Advanced Vector Extensions (Intel(R) AVX),
                         Intel(R) SSE4.2, SSE4.1, SSE3, SSE2, SSE, and SSSE3
                         instructions
            corei7-avx - Generates code for processors that support Intel(R)
                         Advanced Vector Extensions (Intel(R) AVX), Intel(R)
                         SSE4.2, SSE4.1, SSE3, SSE2, SSE, and SSSE3
                         instructions
            corei7     - Generates code for processors that support Intel(R)
                         SSE4 Efficient Accelerated String and Text Processing
                         instructions. May also generate code for Intel(R) SSE4
                         Vectorizing Compiler and Media Accelerator, Intel(R)
                         SSE3, SSE2, SSE, and SSSE3 instructions
            atom       - Generates code for processors that support MOVBE
                         instructions, depending on the setting of option
                         -minstruction (Linux and macOS*) or /Qinstruction
                         (Windows). May also generate code for SSSE3
                         instructions and Intel(R) SSE3, SSE2, and SSE
                         instructions
            core2      - Generates for the Intel(R) Core(TM) 2 processor
                         family
            pentium4m  - Generates for Intel(R) Pentium(R) 4 processors with
                         MMX technology
            pentium-m
            pentium4
            pentium3
            pentium    - Generates code for Intel(R) Pentium(R) processors.
                         Value pentium3 is only available on Linux systems
-msse3    May generate Intel(R) SSE3, SSE2, and SSE instructions
-mssse3   May generate Intel(R) SSSE3, SSE3, SSE2, and SSE instructions
-msse4    Enable -msse4.2
-msse4.1  May generate Intel(R) SSE4.1, SSSE3, SSE3, SSE2, and SSE instructions
-msse4.2  May generate Intel(R) SSE4.2, SSE4.1, SSSE3, SSE3, SSE2, and SSE
          instructions
-mavx     May generate Intel(R) AVX, SSE4.2, SSE4.1, SSSE3, SSE3, SSE2, and SSE
          instructions
-masm=<dialect>
          generate asm instructions specified by <dialect>, which may be
          att (DEFAULT) or intel
-minstruction=<keyword>
          Refine instruction set output for the selected target processor

            [no]movbe  - Do/do not generate MOVBE instructions with ATOM_SSSE3
                          (requires -xATOM_SSSE3)
-f[no-]omit-frame-pointer
          enable(DEFAULT)/disable use of EBP as general purpose register.
          -fno-omit-frame-pointer replaces -fp
-f[no-]exceptions
          enable/disable exception handling table generation
          The default for C++ is -fexceptions  (enabled)
          The default for C is -fno-exceptions (disabled)

-f[no-]fat-lto-objects
          enable/disable generation of true code/data when generating an
          IL object using -ipo -c. Objects generated with -ffat-lto-objects
          or -fno-fat-lto-objects are added unmodified to an archive when
          using xiar. xiar behavior remains unchanged for an IL object
          generated without specifying -f[no-]fat-lto-objects.
-fnon-call-exceptions
          enable/disable(DEFAULT) code that allows exceptions from trapping
          instructions to be caught
-regcall  make __regcall the default calling convention
-mno-sse  disable the generation of SSE instructions
-hotpatch[=n]
          generate padding bytes for function entries to enable image
          hotpatching. If specified, use 'n' as the padding.
-fasynchronous-unwind-tables
          determines whether unwind information is precise at an instruction
          boundary or at a call boundary.  -fno-asynchronous-unwind-tables is
          the default for IA-32 architecture.
-fextend-arguments=[32|64]
          By default, unprototyped scalar integer arguments are passed
          in 32-bits (sign-extended if necessary).
          On Intel(R) 64, unprototyped scalar integer arguments may be
          extended to 64-bits.
-m32      generate code for IA-32 architecture
-m64      generate code for Intel(R) 64 architecture
-m[no-]omit-leaf-frame-pointer
          determines whether the frame pointer is omitted or kept in leaf
          functions
-m80387   Specify whether the compiler can use x87 instructions.
          Use -mno-80387 to disable.
-mx87     Same as -m80387
-mstringop-strategy=<alg>
          Override the internal decision heuristic for the particular algorithm
          to use for inlining string operations. The allowed values for <alg>:
            rep             - Expand using i386 "rep" prefix (DEFAULT for -Os)
            const_size_loop - Expand into an inline loop when size is known at
                              compile time (DEFAULT)
            libcall         - Always use a library call.
-mstringop-inline-threshold=<val>
          inline calls to memcall-like (memcpy, memset) functions when the
          number of bytes the functions handle are known at compile time and
          less than <val>
-fcf-protection[=<arg>]
          Enables Control-flow Enforcement Technology (CET) protection, which
          defends your program from certain attacks that exploit
          vulnerabilities.
            branch - do control-flow instrumentation for indirect branches
            return - do control-flow instrumentation for function returns
            full   - alias to specify both branch and return (same as no <arg>)
            none   - turn off instrumentation
-mauto-arch=<code1>[,<code2>,...]
          generate multiple, feature-specific auto-dispatch code paths for x86
          architecture processors if there is a performance benefit.  The
          accepted arguments match those of option '-ax'

Interprocedural Optimization (IPO)
----------------------------------

-[no-]ip  enable(DEFAULT)/disable single-file IP optimization
          within files
-ipo[n]   enable multi-file IP optimization between files
-ipo-c    generate a multi-file object file (ipo_out.o)
-ipo-S    generate a multi-file assembly file (ipo_out.S)
-ip-no-inlining
          disable full and partial inlining
-ip-no-pinlining
          disable partial inlining
-ipo-separate
          create one object file for every source file (overrides -ipo[n])
-ipo-jobs<n>
          specify the number of jobs to be executed simultaneously during the
          IPO link phase

Advanced Optimizations
----------------------

-unroll[n]
          set maximum number of times to unroll loops.  Omit n to use default
          heuristics.  Use n=0 to disable the loop unroller
-[no-]unroll-aggressive
          enables more aggressive unrolling heuristics
-funroll-loops
          unroll loops based on default heuristics
-[no-]scalar-rep
          enable(DEFAULT)/disable scalar replacement (requires -O3)
-[no-]ansi-alias
          enable(DEFAULT)/disable use of ANSI aliasing rules optimizations;
          user asserts that the program adheres to these rules
-[no-]ansi-alias-check
          enable(DEFAULT)/disable ANSI alias checking when using -ansi-alias
-[no-]complex-limited-range
          enable/disable(DEFAULT) the use of the basic algebraic expansions of
          some complex arithmetic operations.  This can allow for some
          performance improvement in programs which use a lot of complex
          arithmetic at the loss of some exponent range.
-[no-]alias-const
          enable/disable(DEFAULT) a heuristic stating that if two arguments to
          a function have pointer type, a pointer to const does not alias a
          pointer to non-const. Also known as the input/output buffer rule, it
          assumes that input and output buffer arguments do not overlap.
-fargument-alias
          arguments may alias each other and may alias global storage
-fargument-noalias
          arguments do not alias each other but may alias global storage
-fargument-noalias-global
          arguments do not alias each other and do not alias global storage
-ftls-model=<model>
          change thread-local storage model, where <model> can be the
          following: global-dynamic, local-dynamic, initial-exec or local-exec
-q[no-]opt-multi-version-aggressive
          enables more aggressive multi-versioning to check for pointer
          aliasing and scalar replacement
-qopt-ra-region-strategy[=<keyword>]
          select the method that the register allocator uses to partition each
          routine into regions
            routine - one region per routine
            block   - one region per block
            trace   - one region per trace
            loop    - one region per loop
            default - compiler selects best option
-[no-]vec
          enables(DEFAULT)/disables vectorization
-[no-]vec-guard-write
          enables cache/bandwidth optimization for stores under conditionals
          within vector loops
-vec-threshold[n]
          sets a threshold for the vectorization of loops based on the
          probability of profitable execution of the vectorized loop in
          parallel
-vecabi=<arg>
          select vector function ABI
            legacy - use the legacy vector function ABI
            compat - use the compatibility vector function ABI (DEFAULT)
            cmdtarget - generate an extended set of vector functions
            gcc    - use GCC compatible ABI
-qopt-malloc-options={0|1|2|3|4}
          specify malloc configuration parameters.  Specifying a non-zero <n>
          value will cause alternate configuration parameters to be set for
          how malloc allocates and frees memory
-qopt-calloc
          enable/disable(DEFAULT) calls to fast calloc function
-qopt-jump-tables=<arg>
          control the generation of jump tables
            default - let the compiler decide when a jump table, a series of
                      if-then-else constructs or a combination is generated
            large   - generate jump tables up to a certain pre-defined size
                      (64K entries)
            <n>     - generate jump tables up to <n> in size
          use -qno-opt-jump-tables to lower switch statements as chains of
          if-then-else constructs
-fno-jump-tables
          do not generate jump tables for switches and if-then-else statements
-qopt-block-factor=<n>
          specify blocking factor for loop blocking
-ffreestanding
          compile in a freestanding environment where the standard library
          may not be present
-qopt-streaming-stores=<arg>
          specifies whether streaming stores are generated
            always - enables generation of streaming stores under the
                     assumption that the application is memory bound.  Also,
                     the user is responsible for inserting the right memory
                     fences for synchronization
            auto   - compiler decides when streaming stores are used (DEFAULT)
            never  - disables generation of streaming stores
-ipp[=<arg>]
          link some or all of the Intel(R) Integrated Performance Primitives
          (Intel(R) IPP) libraries and bring in the associated headers
            common        - link using the main libraries set.  This is the
                            default value when -ipp is specified
            crypto        - link using the main libraries set and the crypto
                            library

-ipp-link=<arg>
          choose whether to link with static or dynamic libraries to support
          Intel(R) Integrated Performance Primitives (Intel(R) IPP)
            dynamic       - link using the dynamic libraries set.  This is the
                            default value when -ipp is specified on Windows
            static        - link using the static libraries set.  This is the
                            default value when -ipp is specified on Linux

            nonpic        - link using the version of the libraries that do not
                            have position independent code
            nonpic_crypto - link using the crypto library and the version of
                            the libraries that do not have position independent
                            code
-mkl[=<arg>]
          link to the Intel(R) Math Kernel Library (Intel(R) MKL) and bring
          in the associated headers
            parallel   - link using the threaded Intel(R) MKL libraries. This
                         is the default when -mkl is specified
            sequential - link using the non-threaded Intel(R) MKL libraries
            cluster    - link using the Intel(R) MKL Cluster libraries plus
                         the sequential Intel(R) MKL libraries
-tbb      link to the Intel(R) Threading Building Blocks (Intel(R) TBB)
          libraries and bring in the associated headers
-daal[=<arg>]
          link to the Intel(R) Data Analytics Acceleration Library (Intel(R)
          DAAL) libraries and bring in the associated headers
            parallel   - link using the threaded Intel(R) DAAL (DEFAULT)
            sequential - link using the non-threaded Intel(R) DAAL
-q[no-]opt-subscript-in-range
          assumes no overflows in the intermediate computation of the
          subscripts
-[no-]use-intel-optimized-headers
          take advantage of the optimized header files
-[no-]intel-extensions
          enable(DEFAULT)/disable C/C++ language extensions such as array
          notation, Intel(R) Cilk(TM) Plus language extensions, and
          support for decimal floating-point types.
-q[no-]opt-matmul
          replace matrix multiplication with calls to intrinsics and threading
          libraries for improved performance (DEFAULT at -O3 -parallel)
-[no-]simd
          enables(DEFAULT)/disables vectorization using simd pragma
-[no-]simd-function-pointers
          enables/disables(DEFAULT) pointers to simd-enabled functions
-guide-opts=<arg>
          tells the compiler to analyze certain code and generate
          recommendations that may improve optimizations
-guide-file[=<filename>]
          causes the results of guide to be output to a file
-guide-file-append[=<filename>]
          causes the results of guide to be appended to a file
-guide[=<level>]
          lets you set a level (1 - 4) of guidance for auto-vectorization,
          auto-parallelization, and data transformation (DEFAULT is 4 when the
          option is specified)
-guide-data-trans[=<level>]
          lets you set a level (1 - 4) of guidance for data transformation
          (DEFAULT is 4 when the option is specified)
-guide-par[=<level>]
          lets you set a level (1 - 4) of guidance for auto-parallelization
          (DEFAULT is 4 when the option is specified)
-guide-vec[=<level>]
          lets you set a level (1 - 4) of guidance for auto-vectorization
          (DEFAULT is 4 when the option is specified)
-qopt-mem-layout-trans[=<level>]
          controls the level of memory layout transformations performed by the
          compiler
           0 - disable memory layout transformations (same as
               -qno-opt-mem-layout-trans)
           1 - enable basic memory layout transformations
           2 - enable more memory layout transformations  (DEFAULT when the
               option is specified)
           3 - enable aggressive memory layout transformations
-qopt-prefetch[=n]
          enable levels of prefetch insertion, where 0 disables.
          n may be 0 through 5 inclusive.  Default is 2.
-qno-opt-prefetch
          disable(DEFAULT) prefetch insertion.  Equivalent to -qopt-prefetch=0
-qopt-prefetch-distance=n1[,n2]
          specify the prefetch distance (how many iterations ahead, use n1 and
          n2 values such that n1>=n2) to be used for compiler generated
          prefetches inside loops.  n1 indicates distance from memory to L2
          cache and n2 indicates distance from L2 to L1.
-qopt-prefetch-issue-excl-hint
          generates PrefetchW instruction for Intel(R) microarchitecture
          code name Broadwell processors and beyond when -qopt-prefetch
          is also used
-qopt-threads-per-core=n
          specifies the number of threads (1 - 4) per core to be used for an
          application (Intel(R) MIC Architecture specific)
-qopt-streaming-cache-evict=n
          specifies the cache line eviction level (0 - 3) when streaming
          loads/stores are used.  (Intel(R) MIC Architecture specific)
-qopt-gather-scatter-unroll=n
          specify an alternative loop unroll sequence for gather and scatter
          loops (Intel(R) MIC Architecture specific).  Disable with
          -qno-opt-gather-scatter-unroll (equivalent to n=0)
-qopt-dynamic-align
          enable(DEFAULT) dynamic data alignment optimizations.  Specify
          -qno-opt-dynamic-align to disable
-falign-loops[=n]
          specify code alignment of loops to improve performance.
          n is the number of bytes for the minimum alignment boundary.  It must
          be a power of 2 between 1 and 4096.  If n is not present, an
          alignment of 16 bytes is used.
          Use of -fno-align-loops (DEFAULT) sets alignment to 1.
-qopt-zmm-usage=<keyword>
          Specifies the level of zmm registers usage.  You can specify one of
          the following:
            low  - Tells the compiler that the compiled program is unlikely to
                   benefit from zmm registers usage. It specifies that the
                   compiler should avoid using zmm registers unless it can
                   prove the gain from their usage.
            high - Tells the compiler to generate zmm code without restrictions
-qoverride-limits
          provides a way to override certain internal compiler limits that are
          intended to prevent excessive memory usage or compile times for very
          large, complex compilation units.
-q[no-]opt-multiple-gather-scatter-by-shuffles
          Enables or disables the optimization for multiple adjacent
          gather/scatter type vector memory references.
-m[no-]branches-within-32B-boundaries
          enable/disable(DEFAULT) aligning branches and fused branches on
          32-byte boundaries

Profile Guided Optimization (PGO)
---------------------------------

-prof-dir <dir>
          specify directory for profiling output files (*.dyn and *.dpi)
-prof-src-root <dir>
          specify project root directory for application source files to
          enable relative path resolution during profile feedback on sources
          below that directory
-prof-src-root-cwd
          specify the current directory as the project root directory for
          application source files to enable relative path resolution during
          profile feedback on sources below that directory
-[no-]prof-src-dir
          specify whether directory names of sources should be
          considered when looking up profile records within the .dpi file
-prof-file <file>
          specify file name for profiling summary file
-[no-]prof-data-order
          enable/disable(DEFAULT) static data ordering with profiling
-[no-]prof-func-order
          enable/disable(DEFAULT) function ordering with profiling
-[no-]prof-func-groups
          enable(DEFAULT with PGO)/disable function grouping
-prof-gen[=keyword[,keyword]]
          instrument program for profiling.  Optional keywords are as follows.
            default    - Produces an instrumented object file. This is the same
                         as specifying the -prof-gen option with no keyword.
            srcpos     - Produces an instrumented object file and information
                         needed for using the code coverage tool.
            globdata   - Produces an instrumented object file that includes
                         information for global data layout.
            threadsafe - Collects PGO data with guards for threaded
                         applications.
-no-prof-gen
          disable profiling instrumentation
-prof-use[=<arg>]
          enable use of profiling information during optimization
            weighted  - invokes profmerge with -weighted option to scale data
                        based on run durations
            [no]merge - enable(default)/disable the invocation of the profmerge
                        tool
-no-prof-use
          disable use of profiling information during optimization
-fnsplit[=<n>]
          enable function splitting (enabled with /Qprof-use for IA-32 Windows)
            n - positive integer indicating the threshold number.  The blocks
                can be placed into a different code segment if their
                execution probability is less than the specified value of
                range 0 <= n <= 100
          use -no-fnsplit to disable
-p        compile and link for function profiling with UNIX gprof tool
          On IA32 and Intel(r)64, -pg is also valid
-f[no-]instrument-functions
          determine whether function entry and exit points are instrumented
-prof-hotness-threshold=<val>
          set the hotness threshold for function grouping and function ordering
          val indicates percentage of functions to be placed in hot region.
          This option requires -prof-use
           and -prof-func-groups or -prof-func-order
-prof-value-profiling=<arg>[,<arg>,...]
          limit value profiling
            none      - inhibit all types of value profiling
            nodivide  - inhibit value profiling of non-compile time constants
                        used in division or remainder operations
            noindcall - inhibit value profiling of function addresses at
                        indirect call sites
-prof-gen-sampling
          prepares application executables for hardware profiling (sampling)
          and causes the compiler to generate source code mapping information
-prof-use-sampling=file[:file:...]
          enable use of hardware profiling (sampling) information during
          optimization. Argument provides list of one or more profiling data
          files to apply

Optimization Reports
--------------------

-qopt-report[=n]
          generate an optimization report. Default destination is
          <target>.optrpt.  Levels of 0 - 5 are valid.
          Please see documentation for additional details of
          information provided by phase per level.
            0   disable optimization report output
            2   DEFAULT when enabled
-qopt-report-file=[stdout | stderr | <file>]
          specify the filename or output stream for the generated report
-qopt-report-stdout
          specify the generated report should be directed to stdout
-qopt-report-per-object
          specify the generated report should be directed to a .optrpt file
          in the output directory (DEFAULT when another destination for the
          report is not specified)
-qopt-report-phase=<phase>[,<phase>,...]
          specify one or more phases that reports are generated against
-qopt-report-routine=<name>[,<name>,...]
          restrict the report to routines containing the given name
-qopt-report-filter=<string>
          restricts the opt-report to specific files, routines or line
          number ranges. Refer to the documentation for the specific
          syntax of parameter string.
-qopt-report-format=[text|vs]
          specify the output format to be used for the opt-report as either
          plain text or a format for use in the Microsoft* Visual Studio IDE
-q[no-]opt-report-embed
          When enabled, if an assembly file is being generated, special loop
          info annotations will be emitted in the assembly file.  If an object
          file/executable is being generated, these will be emitted into the
          object file/executable for use by the Intel VTune Amplifier
          application. Automatically enabled when symbolic debug information
          is enabled.
-qopt-report-help
          display the optimization phases available for reporting
-qopt-report-names=<keyword>
          Specifies whether mangled or unmangled names should appear in the
          optimization report.
            mangled   - use mangled names
            unmangled - use unmangled names (DEFAULT)
-qopt-report-annotate[=<keyword>]
          Annotate source files with optimization reports in specified format
            html - annotate in HTML format
            text - annotate in text format (DEFAULT)
-qopt-report-annotate-position=<keyword>
          Specify the site where loop related optimization reports appear in
          the annotated source for inlined routines
            caller - annotate at caller site
            callee - annotate at callee site
            both   - annotate at both caller and callee site
-tcheck [mode]
          enable analysis of threaded applications (requires Intel(R) Thread
          Checker; cannot be used with compiler alone)
            tci - instruments a program to perform a thread-count-independent
                  analysis
            tcd - instruments a program to perform a thread-count-dependent
                  analysis (DEFAULT when mode is not used)
            api - instruments a program at the api-imports level
-tcollect[=<lib>]
          inserts instrumentation probes calling the Intel(R) Trace Collector
          API.  The library -l<lib> is linked in the default being -lVT
          (requires Intel(R) Trace Collector)
-tcollect-filter file
          Enable or disable the instrumentation of specified functions.
          (requires Intel(R) Trace Collector)

OpenMP* and Parallel Processing
------------------------------

-qopenmp  enable the compiler to generate multi-threaded code based on the
          OpenMP* directives (same as -fopenmp)
          Use -qno-openmp to disable
-qopenmp-stubs
          enables the user to compile OpenMP programs in sequential mode.  The
          OpenMP directives are ignored and a stub OpenMP library is linked
          (sequential)
-qopenmp-lib=<ver>
          choose which OpenMP library version to link with
            compat - use the GNU compatible OpenMP run-time libraries
                     (DEFAULT)
-qopenmp-link=<library>
          choose whether to link with the static or dynamic OpenMP
          libraries.  Default is dynamic.
-qopenmp-threadprivate=<ver>
          choose which threadprivate implementation to use
            compat - use the GNU compatible thread local storage
            legacy - use the Intel compatible implementation
                     (DEFAULT)
-parallel
          enable the auto-parallelizer to generate multi-threaded code for
          loops that can be safely executed in parallel
-par-threshold[n]
          set threshold for the auto-parallelization of loops where n is an
          integer from 0 to 100
-par-runtime-control[n]
          Control parallelizer to generate runtime check code for effective
          automatic parallelization.
            n=0    no runtime check based auto-parallelization
            n=1    generate runtime check code under conservative mode
                   (DEFAULT when enabled)
            n=2    generate runtime check code under heuristic mode
            n=3    generate runtime check code under aggressive mode
-par-schedule-static[=n]
          Specifies a scheduling algorithm for DO loop iteration.
          Divides iterations into contiguous pieces.  Size n if
          specified, equal sized pieces if not.
-par-schedule-static-balanced[=n]
          Divides iterations into even-sized chunks.  Size n if
          specified, equal sized pieces if not.
-par-schedule-static-steal[=n]
          Divides iterations into even-sized chunks, but allows
          threads to steal parts of chunks from neighboring threads
-par-schedule-dynamic[=n]
          Specifies a scheduling algorithm for DO loop iteration.
          Assigns iterations to threads in chunks dynamically.
          Chunk size is n iterations if specified, otherwise 1.
-par-schedule-guided[=n]
          Specifies a scheduling algorithm for DO loop iteration.
          Indicates a minimum number of iterations.  If specified,
          n is the minimum number, otherwise 1.
-par-schedule-guided-analytical[=n]
          Divides iterations by using exponential distribution or
          dynamic distributions.
-par-schedule-runtime
          Specifies a scheduling algorithm for DO loop iteration.
          Defers the scheduling decision until runtime.
-par-schedule-auto
          Lets the compiler or run-time system determine the
          scheduling algorithm.
-par-affinity=[<modifier>,...]<type>[,<permute>][,<offset>]
          tune application performance by setting different thread affinity
-par-num-threads=<n>
          tune application performance by setting different number of threads
-parallel-source-info[=n]
          enable(DEFAULT)/disable the emission of source location information
          for parallel code generation with OpenMP and auto-parallelization
            0 - disable (same as -no-parallel-source-info)
            1 - emit routine name and line information (DEFAULT)
            2 - emit path, file, routine name and line information
-qopenmp-simd
          Enables OpenMP* SIMD compilation.  Enabled by default with
          -qopenmp.  Use -qno-openmp-simd to disable.
-qopenmp-offload[=<kind>]
          Enables OpenMP* offloading compilation for target pragmas.
          Enabled by default with -qopenmp.
          Use -qno-openmp-offload to disable.
          Specify kind to specify the default device for target pragmas
            host - allow target code to run on host system while still doing
                   the outlining for offload
-f[no-]mpc_privatize
          Enables privatization of all static data for the MPC
          unified parallel runtime.  This will cause calls to
          extended thread local storage resolution run-time routines
          which are not supported on standard linux distributions.
          This option is only usable in conjunction with the MPC
          unified parallel runtime.  The default is -fno-mpc-privatize.
-par-loops=<arg>
          Select between old or new implementations of parallel loop support.
          The default is -par-loops=new

Floating Point
--------------

-fp-model <name>
          enable <name> floating point model variation
            [no-]except - enable/disable floating point exception semantics
            fast[=1|2]  - enables more aggressive floating point optimizations
            precise     - allows value-safe optimizations
            source      - enables intermediates in source precision
                          sets -assume protect_parens for Fortran
            strict      - enables -fp-model precise -fp-model except, disables
                          contractions and enables pragma stdc fenv_access
            consistent  - enables consistent, reproducible results for
                          different optimization levels or between different
                          processors of the same architecture
            double      - rounds intermediates in 53-bit (double) precision
            extended    - rounds intermediates in 64-bit (extended) precision
-fp-speculation=<mode>
          enable floating point speculations with the following <mode>
          conditions:
            fast   - speculate floating point operations (DEFAULT)
            safe   - speculate only when safe
            strict - same as off
            off    - disables speculation of floating-point operations
-pc32     set internal FPU precision to 24 bit significand
-pc64     set internal FPU precision to 53 bit significand
-pc80     set internal FPU precision to 64 bit significand (DEFAULT)
-mp1      improve floating-point precision
-mieee-fp
          maintain floating point precision (disables some optimizations)
          can be disabled with -mno-ieee-fp
-[no-]prec-sqrt
          determine if certain square root optimizations are enabled
-[no-]prec-div
          improve precision of FP divides (some speed impact)
-[no-]fast-transcendentals
          generate a faster version of the transcendental functions
-[no-]fp-port
          round fp results at assignments and casts (some speed impact)
-fp-stack-check
          enable fp stack checking after every function/procedure call
-rcd      rounding mode to enable fast float-to-int conversions
-[no-]ftz
          enable/disable flush denormal results to zero
-[no-]fma
          enable/disable the combining of floating point multiplies and
          add/subtract operations
-fp-trap=<arg>[,<arg>,...]
          control floating point traps at program start.  <arg> can be of the
          following values
            [no]divzero   - [Do not] trap on division by zero
            [no]inexact   - [Do not] trap on inexact result
            [no]invalid   - [Do not] trap on invalid operation
            [no]overflow  - [Do not] trap on overflow
            [no]underflow - [Do not] trap on underflow
            [no]denormal  - [Do not] trap on denormal
            all           - enable trap on all of the above
            none          - trap on none of the above
            common        - trap on most commonly used IEEE traps
                            (invalid, division by zero, overflow)
-fp-trap-all=<arg>[,<arg>,...]
          control floating point traps in every routine.  <arg> can be of the
          values specified in -fp-trap
-fimf-absolute-error=value[:funclist]
          define the maximum allowable absolute error for math library
          function results
            value    - a positive, floating-point number conforming to the
                       format [digits][.digits][{e|E}[sign]digits]
            funclist - optional comma separated list of one or more math
                       library functions to which the attribute should be
                       applied
-fimf-accuracy-bits=bits[:funclist]
          define the relative error, measured by the number of correct bits,
          for math library function results
            bits     - a positive, floating-point number
            funclist - optional comma separated list of one or more math
                       library functions to which the attribute should be
                       applied
-fimf-arch-consistency=value[:funclist]
          ensures that the math library functions produce consistent results
          across different implementations of the same architecture
            value    - true or false
            funclist - optional comma separated list of one or more math
                       library functions to which the attribute should be
                       applied
-fimf-max-error=ulps[:funclist]
          defines the maximum allowable relative error, measured in ulps, for
          math library function results
            ulps     - a positive, floating-point number conforming to the
                       format [digits][.digits][{e|E}[sign]digits]
            funclist - optional comma separated list of one or more math
                       library functions to which the attribute should be
                       applied
-fimf-precision=value[:funclist]
          defines the accuracy (precision) for math library functions
            value    - defined as one of the following values
                       high   - equivalent to max-error = 1.0
                       medium - equivalent to max-error = 4 (DEFAULT)
                       low    - equivalent to accuracy-bits = 11 (single
                                precision); accuracy-bits = 26 (double
                                precision)
                       reference - equivalent to 'high' accuracy with correct
                                signaling of exceptional conditions through
                                the errno and status flags settings.  This
                                setting is initially available only on Linux*
                                systems
            funclist - optional comma separated list of one or more math
                       library functions to which the attribute should be
                       applied
-fimf-domain-exclusion=classlist[:funclist]
          indicates the input arguments domain on which math functions
          must provide correct results.
            classlist - defined as one of the following values:
                          nans, infinities, denormals, zeros
                          all, none, common
            funclist - optional list of one or more math library functions to
                       which the attribute should be applied.
-fimf-force-dynamic-target[=funclist]
          Instructs the compiler to use run-time dispatch in calls to math
          functions
            funclist - optional list of one or more math library functions to
                       which the attribute should be applied.
-fimf-use-svml=value[:funclist]
          Instructs the compiler to implement math library functions using
          the Short Vector Math Library(SVML)
            value    - true or false
            funclist - optional comma separated list of one or more math
                       library functions to which the attribute should be
                       applied
-ffinite-math-only
          Allow optimizations for floating point arithmetic that assume
          arguments and results are not NaNs or Infinities

Inlining
--------

-inline-level=<n>
          control inline expansion:
            n=0  disable inlining
            n=1  inline functions declared with __inline, and perform C++
                 inlining
            n=2  inline any function, at the compiler's discretion
-f[no-]inline
          inline functions declared with __inline, and perform C++ inlining
-f[no-]inline-functions
          inline any function at the compiler's discretion
-finline-limit=<n>
          set maximum number of statements a function can have and still be
          considered for inlining
-fgnu89-inline
           use C89 semantics for "inline" functions when in C99 mode
-inline-min-size=<n>
          set size limit for inlining small routines
-no-inline-min-size
          no size limit for inlining small routines
-inline-max-size=<n>
          set size limit for inlining large routines
-no-inline-max-size
          no size limit for inlining large routines
-inline-max-total-size=<n>
          maximum increase in size for inline function expansion
-no-inline-max-total-size
          no size limit for inline function expansion
-inline-max-per-routine=<n>
          maximum number of inline instances in any function
-no-inline-max-per-routine
          no maximum number of inline instances in any function
-inline-max-per-compile=<n>
          maximum number of inline instances in the current compilation
-no-inline-max-per-compile
          no maximum number of inline instances in the current compilation
-inline-factor=<n>
          set inlining upper limits by n percentage
-no-inline-factor
          do not set set inlining upper limits
-inline-forceinline
          treat inline routines as forceinline
-inline-calloc
          directs the compiler to inline calloc() calls as malloc()/memset()
-inline-min_caller-growth=<n>
          set lower limit on caller growth due to inlining a single routine
-no-inline-min-caller-growth
          no lower limit on caller growth due to inlining a single routine

Output, Debug, PCH
------------------

-c        compile to object (.o) only, do not link
-S        compile to assembly (.s) only, do not link
-fsource-asm
          produce assembly file with optional source annotations (requires -S)
-f[no-]verbose-asm
          produce assembly file with compiler comments (DEFAULT) (requires -S)
-fcode-asm
          produce assembly file with optional code annotations (requires -S)
-use-msasm
          support Microsoft* style assembly language insertion using MASM style
          syntax
-fasm-blocks
          enables the use of blocks and entire functions of assembly code
          within a C or C++ file
-Fa[file]
          name assembly file (or directory for multiple files; i.e. /FaMYDIR\)
-Fo[file]
          name object file (or directory for multiple files; i.e. /FoMYDIR\)
-o <file>
          name output file
-g[level]
          Produce symbolic debug information.
          Valid [level] values:
             0  - Disable generation of symbolic debug information.
             1  - Emit minimal debug information for performing stack traces.
             2  - Emit complete debug information. (default for -g)
             3  - Emit extra information which may be useful for some tools.
-gdwarf-<version>
          Enable generation of debug information using the specified DWARF
          version.  These options may require additional tools such as linkers
          and debuggers which support these formats.
          Valid <version> values:
             2  - DWARF Debug Information Format Version 2.
             3  - DWARF Debug Information Format Version 3. (default for -g)
             4  - DWARF Debug Information Format Version 4.
-gsplit-dwarf
          Generates an additional output file containing most of the debug
          information.  This reduces the size of objects processed by the
          linker.  The additional output file will be given a .dwo file
          extension.  This option may require additional tools which support
          DWARF object files.
-debug [keyword]
          Control the emission of debug information.
          Valid [keyword] values:
             none
                 Disables debug generation.

             all, full (default if no keyword was specified)
                 Generates complete debug information.

             minimal
                 Generates line number information.
             extended
                 Generates complete debug information with semantic stepping
                 and variable locations enabled.

             [no]variable-locations
                 Controls additional debug information useful for tracking
                 variable values in optimized code.

             [no]semantic-stepping
                 Controls additional debug information useful for stepping
                 through optimized code.

             [no]pubnames
                 Controls generation of the DWARF .debug_pubnames section.

             [no]emit-column
                 Controls additional line number information with columns.
             [no]inline-debug-info
                 Controls additional debug information for inlined code.
             [no]expr-source-pos
                 Controls output of source positions for expressions.
             [no]macros
                 Controls output of debug information for preprocessor macros.
             [no-]biendian
                 Controls output of additional debug information for endianity.
             parallel
                 Emit code instrumentation useful for thread data sharing and
                 reentrant call detection.
-grecord-gcc-switches
          Record command line options in the DW_AT_producer attribute in
          the DWARF debugging information.
-fvar-tracking
          Same as "-debug variable-locations".
-fvar-tracking-assignments
          Same as "-debug semantic-stepping".
-f[no-]dwarf2-cfi-asm
          Control whether the compiler should generate CFI directives which
          the assembler can use to generate unwind information, or if the
          compiler should emit the unwind information directly.
-fno-merge-debug-strings
          Do not merge identical debug strings in different object files.
-fno-merge-constants
          Do not merge identical string constants in different object files.
-ftrapuv  trap uninitialized variables
-map-opts
          enable option mapping tool
-print-multi-lib
          print information about libraries being used
-pch-create <file>
          create precompiled header file
-pch-use <file>
          use precompiled header file
-pch      enable automatic precompiled header file creation/usage
-pch-dir <dir>
          name precompiled header directory
-check-pointers=<arg>
          Specifies what type of bounds checking occurs. Possible values are:
            none   - Disables bounds checking. This is the default.
            rw     - Checks bounds for reads and writes through pointers.
            write  - Checks bounds for writes through pointers only.
-check-pointers-mpx=<arg>
          Enables bounds checking using Intel(R) MPX support. Possible
          values are:
            none   - Disables bounds checking. This is the default.
            rw     - Checks bounds for reads and writes through pointers.
            write  - Checks bounds for writes through pointers only.
          This switch is only valid on targets with Intel(R) MPX support.
-check-pointers-dangling=<arg>
          Specifies what type of dangling pointer checking occurs. Possible
          values are:
            none   - Disables dangling pointer checking. This is the default.
            heap   - Check dangling references on heap.
            stack  - Check dangling references on stack.
            all    - Check dangling references on both heap and stack.
-[no-]check-pointers-undimensioned
          Bounds checking occurs for memory access through arrays that are
          declared without dimensions. This checking occurs for both
          dimensioned and undimensioned arrays.
-[no-]check-pointers-narrowing
          When this is disabled, Pointer Checker will not give an error when
          pointers to a structure field are moved to fields in the same
          structure.
-f[no-]emit-class-debug-always
          Emit debug information for a C++ class into each object file where
          the class is used.  This flag is useful for tools which are unable
          to resolve incomplete type descriptions.  Using this option may
          cause a large increase in the size of the debug information.
-f[no-]eliminate-unused-debug-types
          When disabled, debug information for all types present in the
          sources will be emitted.  Using this option may cause a large
          increase in the size of the debug information.
-qemit-build-options
          Output the options used during the compilation to a corresponding
          .dashboard file.  This file is to be consumed by the dbmerge tool
          and used by the dashboard tool.
-qemit-messages
          Output the diagnostics emitted during the compilation to a
          corresponding .dashboard file.  This file is to be consumed by the
          dbmerge tool and used by the dashboard tool.

Preprocessor
------------

-A<name>[<val>]
          create an assertion <name> having value <val>
-C        do not strip comments
-D<name>[=<text>]
          define macro
-U<name>  remove predefined macro
-E        preprocess to stdout
-EP       preprocess to stdout, omitting #line directives
-P        preprocess to file, omitting #line directives
-I<dir>   add directory to include file search path
-idirafter<dir>
          add directory to the second include file search path (after -I)
-isystem<dir>
          add directory to the start of the system include path
-X, -nostdinc
          remove standard directories from include file search path
-nostdinc++
          remove standard C++ directories from include file search path
-iprefix <prefix>
          use <prefix> with -iwithprefix as a prefix
-iwithprefix <dir>
          append <dir> to the prefix passed in by -iprefix and put it on the
          include search path at the end of the include directories
-iwithprefixbefore <dir>
          similar to -iwithprefix except the include directory is placed in the
          same place as -I command line include directories
-iquote <dir>
          add directory to the front of the include file search path for files
          included with quotes, but not brackets
-imacros <file>
          treat <file> as an #include file, but throw away all preprocessing
          while macros defined remain defined
-H        print include file order
-B<prefix>
          find libraries, headers and executables in <prefix>
-M        generate makefile dependency information
-MM       similar to -M, but do not include system header files
-MG       similar to -M, but treat missing header files as generated files
-MD       preprocess and compile, generating output file containing dependency
          information ending with extension .d
-MMD      similar to -MD, but do not include system header files
-MF<file>
          generate makefile dependency information in file (must specify -M
          or -MM)
-MP       add a phony target for each dependency
-MT<target>
          change the default target rule for dependency generation
-MQ<target>
          same as -MT, but quotes special Make characters
-dM       output macro definitions in effect after preprocessing (use with -E)
-dD       same as -dM, but output #define directives in preprocessed source
-dN       same as -dD, but #define directives contain only macro names
-gcc      Predefine the "__GNUC__", "__GNUC_MINOR__", and
          "__GNUC_PATCHLEVEL__" macros (DEFAULT)
-no-gcc   Do not predefine GNUC macros listed in -gcc mode. Warning: can
          prevent correct system header compilation, see -gcc-sys
-gcc-sys  same as -no-gcc, except that the GNU macros are defined only while
          preprocessing the system include headers
-no-icc   do not predefine the "__ICC" and "__INTEL_COMPILER" macros.
          Warning: can prevent correct Intel header compilation
-no-gcc-include-dir
          Do not add the gcc version specific system include directory
-pragma-optimization-level=[Intel|GCC]
          process #pragma optimize using Intel (DEFAULT) or GCC syntax

Component Control
-----------------

-Qoption,<tool>,<opts>
          pass options <opts> to tool specified by <tool>
-Qlocation,<tool>,<dir>
          set <dir> as the location of tool specified by <tool>
-Qinstall <dir>
          set <dir> as root of compiler installation

Language
--------

-std=<std>
          enable language support for <std>, as described below
            c99   conforms to ISO/IEC 9899:1999 standard for C programs
            c11   conforms to ISO/IEC 9899:2011 standard for C programs
            c17   conforms to ISO/IEC 9899:2017 standard for C programs
            c18   conforms to ISO/IEC 9899:2018 standard for C programs
            c++11 enables C++11 support for C++ programs
            c++14 enables C++14 support for C++ programs
            c++17 enables C++17 support for C++ programs
            c++20 enables C++20 support for C++ programs
            c89   conforms to ISO/IEC 9899:1990 standard for C programs
            gnu89 conforms to ISO C90 plus GNU extensions
            gnu99 conforms to ISO C99 plus GNU extensions
            gnu++98 conforms to 1998 ISO C++ standard plus GNU extensions
            gnu++11 conforms to 2011 ISO C++ standard plus GNU extensions
            gnu++14 conforms to 2014 ISO C++ standard plus GNU extensions
            gnu++17 conforms to 2017 ISO C++ standard plus GNU extensions
            gnu++20 conforms to 2020 ISO C++ standard plus GNU extensions
-x <type>
          all source files found subsequent to -x <type> will be recognized
          as one of the following types:
              c                  - C source file
              c++                - C++ source file
              c-header           - C header file
              cpp-output         - C pre-processed file
              c++-cpp-output     - C++ pre-processed file
              assembler          - assembly file
              assembler-with-cpp - assembly file that needs to be preprocessed
              none               - revert to original file extension
-ansi     equivalent to GNU -ansi
-strict-ansi
          strict ANSI conformance dialect
-Zp[n]    specify alignment constraint for structures where
          n=1,2,4,8,16. 16 is the default
-fsyntax-only
          perform syntax and semantic checking only (no object file produced)
-trigraphs
          support ISO C trigraphs (enabled in -ansi mode)
-fpermissive
          allows extensions for some non-conformant code
-funsigned-char
          change default char type to unsigned
-fshort-enums
          allocate as many bytes as needed for enumerated types
-f[no-]unsigned-bitfields
          change default bitfield type to unsigned
-fno-rtti
          disable RTTI support
-fno-implicit-templates
          never emit code for non-inline templates which are instantiated
          implicitly; only emit code for explicit instantiations
-fno-implicit-inline-templates
          do not emit code for implicit instantiations of inline templates
-ftemplate-depth=n
          control the depth in which recursive templates are expanded
-[no]align
          analyze and reorder memory layout for variables and arrays
-[no-]restrict
          enable/disable the 'restrict' keyword for disambiguating pointers
-[no-]early-template-check
          enable/disable (DEFAULT) semantic checking of function template
          prototypes (before instantiation).
-help-pragma
          output supported pragmas and their usage syntax
-ffriend-injection
          inject friend functions into the enclosing namespace.  Use
          -fno-friend-injection to disable
-check=<keyword>[,<keyword>,...]
          check run-time conditions.
          keywords:  [no]conversions, [no]stack, [no]uninit
-qopt-assume-safe-padding
          assume that variables and dynamically allocated memory are padded
          (Intel(R) MIC Architecture specific)

Compiler Diagnostics
--------------------

-w        disable all warnings
-w<n>     control diagnostics
            n = 0    enable errors only (same as -w)
            n = 1    enable warnings and errors (DEFAULT)
            n = 2    enable verbose warnings, warnings and errors
            n = 3    enable remarks, verbose warnings, warnings and errors
-Wbrief   print brief one-line diagnostics
-Werror   force warnings to be reported as errors
-Werror-all
          force warnings and currently enabled remarks to be reported as errors
-Wall     enable all warnings
-Wremarks
          enable all remarks and comments
-Wcheck   enable more strict diagnostics
-Weffc++  enable effective C++ diagnostic warnings
-wo<L1>[,<L2>,...]
          issue diagnostics L1 through LN only once
-W[no-]fatal-errors
          ends compilation after the first error encountered
-W[no-]format
          enable argument checking for calls to printf, scanf, etc
-W[no-]format-security
          warn for uses of format strings and specifiers in printf,
          scanf, etc that may introduce security problems
-W[no-]missing-declarations
          warn for global functions and variables without prior declaration
-W[no-]missing-prototypes
          warn for missing prototypes
-W[no-]strict-aliasing
         warn for code that might violate the optimizer's strict aliasing
         rules. Warnings are issued only when using -fstrict-aliasing or
         -ansi-alias.
-W[no-]strict-prototypes
          warn for functions declared or defined without specified argument
          types
-W[no-]pointer-arith
          warn for questionable pointer arithmetic
-W[no-]uninitialized
          warn if a variable is used before being initialized
-Winline  enable inline diagnostics
-W[no-]deprecated
          print warnings related to deprecated features
-W[no-]abi
          warn if generated code is not C++ ABI compliant
-Wcontext-limit=<n>
          set maximum number of template instantiation contexts shown in
          diagnostic
-Wcast-qual
          warn if cast is used to override pointer type qualifier
-W[no-]unused-function
          warn if declared function is not used
-W[no-]unused-parameter
          warn if declared function parameter is not used
-W[no-]unknown-pragmas
          warn if an unknown #pragma directive is used (DEFAULT)
-W[no-]main
          warn if return type of main is not expected
-W[no-]comment[s]
          warn when   comment
-W[no-]conversion
          warn for implicit conversions that may alter a value
-W[no-]return-type
           Issue warnings when a function is declared without a return type or
           when the definition of a function returning void contains a return
           statement with an expression
-W[no-]extra-tokens
          warn about extra tokens after preprocessor directives
-W[no-]invalid-pch
          warn about problems with existing precompiled headers
-W[no-]shadow
          warn when a variable declaration hides a previous declaration
-Woverloaded-virtual
          warn when a function declaration hides virtual functions from a base
          class
-W[no-]trigraphs
          warn about the recognition and conversion of trigraphs
-W[no-]multichar
          warn if a multicharacter constant ('ABC') is used
-W[no-]overflow
          warn for operations that could result in integer overflow
-Wwrite-strings
          Issues a diagnostic message if const char * is converted
          to (non-const) char *.
-W[no-]sign-compare
          warn for comparisons between signed and unsigned values that
          could produce unintended results after sign conversion
-W[no-]ic-pointer
          warn for conversions between pointers to distinct scalar types
          with the same representation
-Wp64     print diagnostics for 64-bit porting
-W[no-]shorten-64-to-32
          warn for values implicitly converted from a 64-bit to a 32-bit type.
          Similar to -Wp64
-[no]traceback
          specify whether the compiler generates data to allow for source file
          traceback information at runtime (only to be used when linking with
          Fortran programs)
-diag-enable=<v1>[,<v2>,...]
          enable the specified diagnostics or diagnostic groups
-diag-disable=<v1>[,<v2>,...]
          disable the specified diagnostics or diagnostic groups
          where <vN> may be individual diagnostic numbers or group names.
          where group names include:
              thread     - diagnostics to aid in thread-enabling source
              power      - controls whether diagnostics are enabled for
                           possibly inefficient code that may affect power
                           consumption when running on Intel(R) processors
              port-win   - diagnostics for GNU extensions that may
                           cause errors when porting to Windows
              openmp     - diagnostics issued by the OpenMP* parallelizer
              warn       - diagnostics that have "warning" severity level
              error      - diagnostics that have "error" severity level
              remark     - diagnostics that are remarks or comments

              vec        - diagnostics issued by the vectorizer
              par        - diagnostics issued by the auto-parallelizer
              cpu-dispatch
                         - specifies the CPU dispatch remarks
             biendian-verbose
                         - advanced bi-endian specific diagnostics
-diag-error=<v1>[,<v2>,...]
          output the specified diagnostics or diagnostic groups as errors
-diag-warning=<v1>[,<v2>,...]
          output the specified diagnostics or diagnostic groups as warnings
-diag-remark=<v1>[,<v2>,...]
          output the the specified diagnostics or diagnostic groups as remarks
-diag-dump
          display the currently enabled diagnostic messages to stdout
-diag-file[=<file>]
          <file> where diagnostics are emitted to.  Not specifying this causes
          messages to be output to stderr
-diag-file-append[=<file>]
          <file> where diagnostics are emitted to. When <file> already exists,
          output is appended to the file
-[no-]diag-id-numbers
          enable(DEFAULT)/disable the diagnostic specifiers to be output in
          numeric form
-diag-error-limit=<num>
          specify the maximum number of errors emitted
-diag-once=<v1>[,<v2>,...]
          issue diagnostics v1 through vN only once
-W[no-]pch-messages
          enable(DEFAULT)/disable PCH information messages

Miscellaneous
-------------

-V        display compiler version information
-dumpversion
          display the compiler version number only
-dumpmachine
          display the target machine only
--version
          display GCC style version information
-sox[=<keyword>[,keyword]]
          enable saving of compiler options, version and additional information
          in the executable.  Use -no-sox to disable(DEFAULT)
            profile - include profiling data
            inline  - include inlining information
-save-temps
          store the intermediate files in current directory and name them
          based on the source file.  Only saves files that are generated by
          default
-dryrun   show driver tool commands but do not execute tools
-v        show driver tool commands and execute tools
-watch=<keyword>
          tells the driver to output processing information
            keywords: all, none (same as -nowatch), [no]source,
                      [no]cmd (same as -v)
                      [no]offload-cmd
-nowatch  suppress processing information output (DEFAULT)
-[no-]multibyte-chars
          provide support for multi-byte characters
-multiple-processes[=<n>]
          create multiple processes that can be used to compile large numbers
          of source files at the same time
-standalone
          create standalone compilation environment, helpful for bootstrap
          environments where gcc is not available during the build
-qnextgen
          invokes the Intel Compiler for LLVM*
-qnextgen-diag
          This option causes the Intel Compiler for LLVM* to display a list
          of compiler options that are currently not supported.

Offload
-------

-qoffload=<arg>
          define whether offload is enabled, and if enabled, whether CPU
          fallback is permitted
            keywords:  none, optional, mandatory
-qno-offload
          disable any offload usage

Data
----

-Zp[n]    specify alignment constraint for structures (n=1,2,4,8,16
          -Zp16 DEFAULT)
-fminshared
          Compilation is for the main executable. Absolute addressing can be
          used and non-position independent code generated for symbols that
          are at least protected
-fcommon  Enables the compiler to treat common variables as if they were
          defined.  That in turn allows the use of gprel addressing of common
          data variables.  -fno-common disables
-freg-struct-return
          return struct and union values in registers when possible
-fstack-security-check
          enable overflow security checks.
          -fno-stack-security-check disables (DEFAULT)
-fstack-protector
          enable stack overflow security checks.
          -fno-stack-protector disables (DEFAULT)
-fstack-protector-strong
          enable stack overflow security checks for routines with any buffer.
          -fno-stack-protector-strong disables (DEFAULT)
-fstack-protector-all
          enable stack overflow security checks including functions.
          -fno-stack-protector-all disables (DEFAULT)
-fpic, -fPIC
          generate position independent code (-fno-pic/-fno-PIC is DEFAULT)
-fpie, -fPIE
          generate position independent code that will be linked into an
          executable (-fno-pie/-fno-PIE is DEFAULT)
-auto-ilp32
           specify that the application cannot exceed a 32-bit address space
           (-ipo[n] required)
-auto-p32  instructs the compiler to analyze the program to determine if there
           are 64-bit pointers that can be safely shrunk to 32-bit pointers.
           (-ipo required)
-[no-]global-hoist
          enable(DEFAULT)/disable external globals are load safe
-f[no-]keep-static-consts
          enable/disable(DEFAULT) the ability to preserve allocation of
          variables that are not referenced in the source
-fpack-struct
          pack structure members together
-f[no-]math-errno
          set ERRNO after calling standard math library functions
-no-bss-init
          disable placement of zero-initialized variables in BSS (use DATA)
-f[no-]zero-initialized-in-bss
          put explicitly zero initialized variables into the DATA section
          instead of the BSS section
-mcmodel=<size>
          use a specific memory model to generate code and store data
            small  - Restricts code and  data to the first 2GB of address
                     space (DEFAULT)
            medium - Restricts code to the first 2GB; it places no memory
                     restriction on data
            large  - Places no memory restriction on code or data
-falign-functions=<n>
          align the start of functions on a 2 (DEFAULT) or <n> byte boundary
          where <n> is a power of 2
-falign-functions
          align the start of functions to an optimal machine-dependent value.
          -fno-align-functions (DEFAULT) aligns on a 2-byte boundary
-fvisibility=[extern|default|protected|hidden|internal]
          Global symbols (data and functions) will get the visibility
          attribute given by default. Symbol visibility attributes explicitly
          set in the source code or using the symbol visibility attribute
          file options will override the -fvisibility setting
-fvisibility-extern=<file>
          Space separated symbols listed in the <file> argument will get
          visibility set to extern
-fvisibility-default=<file>
          Space separated symbols listed in the <file> argument will get
          visibility set to default
-fvisibility-protected=<file>
          Space separated symbols listed in the <file> argument will get
          visibility set to protected
-fvisibility-hidden=<file>
          Space separated symbols listed in the <file> argument will get
          visibility set to hidden
-fvisibility-internal=<file>
          Space separated symbols listed in the <file> argument will get
          visibility set to internal
-fvisibility-inlines-hidden
          mark inline member functions as hidden
-mlong-double-64
          enable 64-bit 'long double'
          80-bit floating-point type is available as __float80.
-mlong-double-80
          enable 80-bit 'long double'

Compatibility
-------------

-gcc-name=<name>
          name and location of gcc if not where expected
-gxx-name=<name>
          name and location of g++ if not where expected
-fabi-version=<val>
          directs the compiler to select a specific ABI implementation
            0 - most recent ABI implementation
            1 - g++ 3.2 compatible ABI implementation
            2 - most conformant ABI implementation
-fms-dialect[=<arg>]
          enable compatibility with a specific Microsoft* Visual Studio
          version
            11   - Microsoft* Visual Studio 2012 compatibility
            12   - Microsoft* Visual Studio 2013 compatibility
            14   - Microsoft* Visual Studio 2015 compatibility
            14.1 - Microsoft* Visual Studio 2017 compatibility
            14.2 - Microsoft* Visual Studio 2019 compatibility
-param-byte-order=<val>
          Defines byte order used to pass parameters
            legacy        - parameters are passed in the declared byte order
                            (compatibility mode)
            little-endian - parameters are passed in the little-endian form
                            (recommended)
-platform=<target platform>
          specify the <target platform> target for cross compilation.
          Default value for target platform is the same as host platform.
            Example: -platform=qnx640 -> generated code is for
            QNX* Neutrino* RTOS 6.4.0
-little-endian
          specify that the compilation assumes little endian conventions
-big-endian
          specify that the compilation assumes big endian conventions
-q[no-]enable-biendian-extended-cxx
          enable/disable(DEFAULT) extended C++ support mode
-[no-]pe-file-primary
          prolog/epilog mechanism for bracketing source files
-pe-file-prefix=<path>
          <path> is prefixed to prolog/epilog files specified
          by pe-(i|u)dir-rule
-extern-prefix=<string>
          specify a <string> to be prepended to external C symbols
-use-decl-byte-order
          compile the function definition with the byte order specified in
          the function declaration
-pe-udir-rule="<regular expression> <prolog file> <epilog file>"
          associate user header file(s) with prolog and epilog files.
          For user header files the following search order is applied:
          -pe-udir-rule settings, -pe-idir-rule settings
-pe-idir-rule="<regular expression> <prolog file> <epilog file>"
          associate system header file(s) with prolog and epilog files.
          For system header files the following search order is applied:
          -pe-idir-rule settings, the platform include directory is used
          for __intel_prolog.h and __intel_epilog.h
-pe-dir-rule="<regular expression> <prolog file> <epilog file>"
          same as -pe-idir-rule
-[no-]add-response-file-dependencies
          include response files in dependency generation output
-[no-]swap-pointers
          specify whether objects of pointer type are byte swapped
-symcheck
          enable checking of global symbol types
-[no-]little-endian-defaultlibs
          Treat default libraries as little-endian during type checking.
          This option should be used in conjunction with -symcheck which
          enables type checking  mechanism.
-little-endian-libs=<libname1>[,<libname2>...]
          Sets list of little-endian libraries for type checking. Library
          name can be either regular expression or start with -l prefix. For
          example, -little-endian-libs=-lmy makes libmy.a/libmy.so
          little-endian. This option should be used in conjunction with
          -symcheck which enables type checking mechanism.
-[no-]multiline-strings
          allows the inclusion of new lines within strings
-size-llp64
          enable LLP64 compilation mode
-promote-varargs-to-64bit
          promote big-endian arguments passed to varargs functions to 64-bit
-[no-]resolve-byte-order-mismatch
          automatically adjust byte order of local variables to resolve
          mismatch during pointer conversion (disabled by default)
-gnu-prefix=prefix
          specify a prefix that will be added to the names of GNU utilities
          called from the compiler

Linking/Linker
--------------

-L<dir>   instruct linker to search <dir> for libraries
-l<string>
          instruct the linker to link in the -l<string> library
-shared-intel
          link Intel provided libraries dynamically
-static-intel
          link Intel provided libraries statically
-shared-libgcc
          link libgcc dynamically
-static-libgcc
          link libgcc statically
-static-libstdc++
          link libstdc++ statically
-dynamic-linker<file>
          select dynamic linker other than the default
-no-cxxlib
          do not link in C++ runtime libraries
-cxxlib[=dir]
          link using C++ run-time libraries provided with gcc dir is an
          optional top-level location for the gcc binaries and libraries
-nodefaultlibs
          do not use standard libraries when linking
-nostartfiles
          do not use standard startup files when linking
-nostdlib
          do not use standard libraries and startup files when linking
-static   prevents linking with shared libraries
-shared   produce a shared object
-Bstatic  specify following libraries are linked statically
-Bdynamic
          specify following libraries are linked dynamically
-pthread  use POSIX* thread library for multithreading support
-cxxlib-<mode>
          tell the compiler which C++ run-time libraries to use
            nostd - do not link in standard C++ library
-u <symbol>
          pretend the <symbol> is undefined
-T <file>
          direct linker to read link commands from <file>
-Xassembler <val>
          pass <val> directly to the assembler for processing
-Xlinker <val>
          pass <val> directly to the linker for processing
-Wa,<o1>[,<o2>,...]
          pass options o1, o2, etc. to the assembler
-Wl,<o1>[,<o2>,...]
          pass options o1, o2, etc. to the linker for processing
-Wp,<o1>[,<o2>,...]
          pass options o1, o2, etc. to the preprocessor
-pie,-no_pie
          generate position independent code that will be linked into an
          executable (-pie is DEFAULT for macOS* 10.7 and later)
          -no-pie/-no_pie disables position independent code
-fuse-ld=<arg>
          Use different linker instead of default linker (ld)
            bfd - use bfd linker
            gold - use gold linker

Linker Specific Options
-----------------------

These options are specific to the linker.  Details can be found in the linker
documentation and man page
-L<dir>
-T<arg>
-h<arg>
-u<arg>
-z<arg>
-i
-r
-s
-N
-Bsymbolic
-Bdynamic
-Bstatic

Deprecated Options
------------------

-use-asm                 No replacement
-qopt-report [n]         use -qopt-report[=n]
-cilk-serialize          No replacement
-qcf-protection=shadow_stack    use -fcf-protection=return
-qcf-protection=branch_tracking use -fcf-protection=branch
-qcf-protection=[full|none]     use -fcf-protection=[full|none]
-march=icelake           use -march=icelake-client
-mtune=icelake           use -mtune=icelake-client
-mcpu=icelake            use -mcpu=icelake-client
-xICELAKE                use -xICELAKE-CLIENT
-axICELAKE               use -axICELAKE-CLIENT
-Kc++                    use -x c++
-wn                      use -diag-error-limit
-wd                      use -diag-disable
-we                      use -diag-error
-ww                      use -diag-warning
-wr                      use -diag-remark
-wo                      use -diag-once
-std=c9x                 use -std=c99
-rcd                     No replacement

-help [category]   print full or category help message

Valid categories include
       advanced        - Advanced Optimizations
       codegen         - Code Generation
       compatibility   - Compatibility
       component       - Component Control
       data            - Data
       deprecated      - Deprecated Options
       diagnostics     - Compiler Diagnostics
       float           - Floating Point
       help            - Help
       inline          - Inlining
       ipo             - Interprocedural Optimization (IPO)
       language        - Language
       link            - Linking/Linker
       misc            - Miscellaneous
       opt             - Optimization
       output          - Output
       pgo             - Profile Guided Optimization (PGO)
       preproc         - Preprocessor
       reports         - Optimization Reports
       openmp          - OpenMP and Parallel Processing

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* Other names and brands may be claimed as the property of others.