llvm-mc-3.7(1)



LLVM-MC(1)                       User Commands                      LLVM-MC(1)

NAME
       llvm-mc - manual page for llvm-mc 3.7

DESCRIPTION
       ERROR:  ld.so:  object  'libfakeroot-sysv.so' from LD_PRELOAD cannot be
       preloaded (cannot open shared object file):  ignored.   OVERVIEW:  llvm
       machine code playground

       USAGE: llvm-mc [options] <input file>

       OPTIONS:

       General options:

       -I=<directory>                                   - Directory of include
              files

       -aarch64-neon-syntax                            - Choose style of  NEON
              code to emit from AArch64 backend:

       =generic
              -   Emit generic NEON assembly

       =apple -   Emit Apple-style NEON assembly

       -arch=<string>                                  - Target arch to assem-
              ble for, see -version for available targets

       -asm-instrumentation                             -  Instrumentation  of
              inline assembly and assembly source files

       =none  -   no instrumentation at all

       =address
              -   instrument instructions with memory arguments

       -asm-show-inst                                     -    Emit   internal
              instruction representation to assembly file

       -bounds-checking-single-trap                    - Use  one  trap  block
              per function

       -code-model                                     - Choose code model

       =default
              -   Target default code model

       =small -   Small code model

       =kernel
              -   Kernel code model

       =medium
              -   Medium code model

       =large -   Large code model

       -color                                           -  use  colored syntax
              highlighting (default=autodetect)

       -compress-debug-sections                        - Compress DWARF  debug
              sections

       -cppfname=<function  name>                        - Specify the name of
              the generated function

       -cppfor=<string>                                - Specify the  name  of
              the thing to generate

       -cppgen                                          -  Choose what kind of
              output to generate

       =program
              -   Generate a complete program

       =module
              -   Generate a module definition

       =contents
              -   Generate contents of a module

       =function
              -   Generate a function definition

       =functions
              -   Generate all function definitions

       =inline
              -   Generate an inline function

       =variable
              -   Generate a variable definition

       =type  -   Generate a type definition

       -defsym=<string>                                - Defines a  symbol  to
              be an integer constant

       -disable-spill-fusing                            -  Disable  fusing  of
              spill code into instructions

       -dwarf-version=<int>                            - Dwarf version

       -enable-implicit-null-checks                    - Fold null checks into
              faulting memory operations

       -enable-load-pre                                -

       -enable-objc-arc-opts                            -  enable/disable  all
              ARC Optimizations

       -enable-scoped-noalias                          -

       -enable-tbaa                                    -

       -exhaustive-register-search                     - Exhaustive Search for
              registers  bypassing  the depth and interference cutoffs of last
              chance recoloring

       -fdebug-compilation-dir=<string>                - Specifies  the  debug
              info's compilation dir

       -filetype                                       - Choose an output file
              type:

       =asm   -   Emit an assembly ('.s') file

       =null  -   Don't emit anything (for timing purposes)

       =obj   -   Emit a native object ('.o') file

       -g                                              - Generate dwarf debug-
              ging info for assembly source files

       -gpsize=<uint>                                     -   Global   Pointer
       Addressing Size.
              The default size is 8.

       -imp-null-check-page-size=<uint>                - The page size of  the
              target in bytes

       -internalize-public-api-file=<filename>          -  A  file  containing
              list of symbol names to preserve

       -internalize-public-api-list=<list>              -  A  list  of  symbol
              names to preserve

       -join-liveintervals                               -   Coalesce   copies
              (default=true)

       -limit-float-precision=<uint>                   -  Generate  low-preci-
              sion inline sequences for some float libcalls

       -main-file-name=<string>                        - Specifies the name we
              should consider the input file

       -mattr=<a1,+a2,-a3,...>                           -   Target   specific
              attributes (-mattr=help for details)

       -mc-relax-all                                    - When used with file-
              type=obj, relax all fixups in the emitted object file

       -mcpu=<cpu-name>                                - Target a specific cpu
              type (-mcpu=help for details)

              Action to perform:

       -as-lex                                        -  Lex  tokens from a .s
              file

       -assemble                                      -  Assemble  a  .s  file
              (default)

       -disassemble                                   - Disassemble strings of
              hex bytes

       -mdis                                         - Marked  up  disassembly
              of strings of hex bytes

       -mips16-constant-islands                         -  Enable  mips16 con-
              stant islands.

       -mips16-hard-float                              -  Enable  mips16  hard
              float.

       -mno-ldc1-sdc1                                   - Expand double preci-
              sion loads and stores to their single precision counterparts

       -n                                              - Don't assume assembly
              file starts in the text section

       -no-discriminators                              - Disable generation of
              discriminator information.

       -no-exec-stack                                  - File doesn't need  an
              exec stack

       -nvptx-sched4reg                                  -   NVPTX   Specific:
              schedule for register pressue

       -o=<filename>                                   - Output filename

       -output-asm-variant=<uint>                      - Syntax variant to use
              for output printing

       -print-after-all                                 -  Print IR after each
              pass

       -print-before-all                               - Print IR before  each
              pass

       -print-imm-hex                                  - Prefer hex format for
              immediate values

       -print-machineinstrs=<pass-name>                - Print machine instrs

       -regalloc                                       - Register allocator to
              use

       =default
              -   pick register allocator based on -O option

       =basic -   basic register allocator

       =fast  -   fast register allocator

       =greedy
              -   greedy register allocator

       =pbqp  -   PBQP register allocator

       -relocation-model                                 -  Choose  relocation
              model

       =default
              -   Target default relocation model

       =static
              -   Non-relocatable code

       =pic   -   Fully relocatable, position independent code

       =dynamic-no-pic
              -   Relocatable external references, non-relocatable code

       -rewrite-map-file=<filename>                    - Symbol Rewrite Map

       -rng-seed=<seed>                                - Seed for  the  random
              number generator

       -sample-profile-max-propagate-iterations=<uint>  -  Maximum  number  of
              iterations to go  through  when  propagating  sample  block/edge
              weights through the CFG.

       -save-temp-labels                                - Don't discard tempo-
              rary labels

       -show-encoding                                   -   Show   instruction
              encodings

       -show-inst                                         -    Show   internal
              instruction representation

       -show-inst-operands                             - Show instructions op-
              erands as parsed

       -stackmap-version=<int>                          - Specify the stackmap
              encoding version (default = 1)

       -stats                                           -  Enable   statistics
              output from program (available with Asserts)

       -time-passes                                      -   Time  each  pass,
              printing elapsed time for each on exit

       -triple=<string>                                 -  Target  triple   to
              assemble for, see -version for available targets

       -verify-debug-info                              -

       -verify-dom-info                                - Verify dominator info
              (time consuming)

       -verify-loop-info                                -  Verify  loop   info
              (time consuming)

       -verify-regalloc                                 - Verify during regis-
              ter allocation

       -verify-region-info                             -  Verify  region  info
              (time consuming)

       -verify-scev                                     -  Verify ScalarEvolu-
              tion's backedge taken counts (slow)

       -x86-asm-syntax                                 - Choose style of  code
              to emit from X86 backend:

       =att   -   Emit AT&T-style assembly

       =intel -   Emit Intel-style assembly

       Generic Options:

       -help                                             -  Display  available
              options (-help-hidden for more)

       -help-list                                       -  Display   list   of
              available options (-help-list-hidden for more)

       -version                                         -  Display the version
              of this program

SEE ALSO
       The full documentation for llvm-mc is maintained as a  Texinfo  manual.
       If  the  info and llvm-mc programs are properly installed at your site,
       the command

              info llvm-mc

       should give you access to the complete manual.

llvm-mc 3.7                       March 2016                        LLVM-MC(1)

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