Provided by: llvm-10_10.0.0-4ubuntu1_amd64 
NAME
llvm-mc - manual page for llvm-mc 10
DESCRIPTION
OVERVIEW: llvm machine code playground
USAGE: llvm-mc [options] <input file>
OPTIONS:
Color Options:
--color - Use colors in output (default=autodetect)
General options:
-I=<directory> - Directory of include files
--aarch64-neon-syntax=<value> - Choose style of NEON code to emit from AArch64
backend:
=generic
- Emit generic NEON assembly
=apple - Emit Apple-style NEON assembly
--amdgpu-disable-loop-alignment - Do not align and prefetch loops
--amdgpu-disable-power-sched - Disable scheduling to minimize mAI power bursts
--amdgpu-dpp-combine - Enable DPP combiner
--amdgpu-dump-hsa-metadata - Dump AMDGPU HSA Metadata
--amdgpu-enable-global-sgpr-addr - Enable use of SGPR regs for GLOBAL LOAD/STORE
instructions
--amdgpu-enable-merge-m0 - Merge and hoist M0 initializations
--amdgpu-sdwa-peephole - Enable SDWA peepholer
--amdgpu-verify-hsa-metadata - Verify AMDGPU HSA Metadata
--amdgpu-vgpr-index-mode - Use GPR indexing mode instead of movrel for vector
indexing
--arch=<string> - Target arch to assemble for, see -version for
available targets
--arm-add-build-attributes -
--arm-implicit-it=<value> - Allow conditional instructions outdside of an IT
block
=always
- Accept in both ISAs, emit implicit ITs in Thumb
=never - Warn in ARM, reject in Thumb
=arm - Accept in ARM, reject in Thumb
=thumb - Warn in ARM, emit implicit ITs in Thumb
--asm-show-inst - Emit internal instruction representation to
assembly file
--atomic-counter-update-promoted - Do counter update using atomic fetch add
for promoted counters only
--bounds-checking-single-trap - Use one trap block per function
--compress-debug-sections=<value> - Choose DWARF debug sections compression:
=none - No compression
=zlib - Use zlib compression
=zlib-gnu
- Use zlib-gnu compression (deprecated)
--cost-kind=<value> - Target cost kind
=throughput
- Reciprocal throughput
=latency
- Instruction latency
=code-size
- Code size
--cvp-dont-add-nowrap-flags -
--debugify-quiet - Suppress verbose debugify output
--defsym=<string> - Defines a symbol to be an integer constant
--disable-promote-alloca-to-lds - Disable promote alloca to LDS
--disable-promote-alloca-to-vector - Disable promote alloca to vector
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
--do-counter-promotion - Do counter register promotion
--dwarf-version=<int> - Dwarf version
--emscripten-cxx-exceptions-whitelist=<string> - The list of function names in which
Emscripten-style exception handling is enabled (see emscripten EMSCRIPTEN_CATCHING_WHITELIST
options)
--enable-cse-in-irtranslator - Should enable CSE in irtranslator
--enable-cse-in-legalizer - Should enable CSE in Legalizer
--enable-emscripten-cxx-exceptions - WebAssembly Emscripten-style exception handling
--enable-emscripten-sjlj - WebAssembly Emscripten-style setjmp/longjmp
handling
--enable-gvn-memdep -
--enable-load-pre -
--enable-loop-simplifycfg-term-folding -
--enable-name-compression - Enable name string compression
--expensive-combines - Enable expensive instruction combines
--fatal-warnings - Treat warnings as errors
--fdebug-compilation-dir=<string> - Specifies the debug info's compilation dir
--fdebug-prefix-map=<= separated key-value pairs> - Map file source paths in debug info
--filetype=<value> - 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 debugging info for assembly source
files
--gpsize=<uint> - Global Pointer Addressing Size.
The default size is 8.
--hash-based-counter-split - Rename counter variable of a comdat function based
on cfg hash
--import-all-index - Import all external functions in index.
--incremental-linker-compatible - When used with filetype=obj, emit an object file
which can be used with an incremental linker
--instcombine-code-sinking - Enable code sinking
--instcombine-guard-widening-window=<uint> - How wide an instruction window to bypass looking
for another guard
--instcombine-max-iterations=<uint> - Limit the maximum number of instruction combining
iterations
--instcombine-max-num-phis=<uint> - Maximum number phis to handle in intptr/ptrint
folding
--instcombine-maxarray-size=<uint> - Maximum array size considered when doing a combine
--instrprof-atomic-counter-update-all - Make all profile counter updates atomic (for
testing only)
--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
--iterative-counter-promotion - Allow counter promotion across the whole loop nest.
--large-code-model - Create cfi directives that assume the code might be
more than 2gb away
--lto-embed-bitcode - Embed LLVM bitcode in object files produced by LTO
--lto-pass-remarks-filter=<regex> - Only record optimization remarks from passes whose
names match the given regular expression
--lto-pass-remarks-format=<format> - The format used for serializing remarks (default:
YAML)
--lto-pass-remarks-output=<filename> - Output filename for pass remarks
--main-file-name=<string> - Specifies the name we should consider the input
file
--masm-integers - Enable binary and hex masm integers (0b110 and
0ABCh)
--matrix-propagate-shape -
--mattr=<a1,+a2,-a3,...> - Target specific attributes (-mattr=help for
details)
--max-counter-promotions=<int> - Max number of allowed counter promotions
--max-counter-promotions-per-loop=<uint> - Max number counter promotions per loop to avoid
increasing register pressure too much
--mc-relax-all - When used with filetype=obj, relax all fixups in
the emitted object file
--mcpu=<cpu-name> - Target a specific cpu type (-mcpu=help for details)
--memop-size-large=<uint> - Set large value thresthold in memory intrinsic size
profiling. Value of 0 disables the large value profiling.
--memop-size-range=<string> - Set the range of size in memory intrinsic calls to
be profiled precisely, in a format of <start_val>:<end_val>
--merror-missing-parenthesis - Error for missing parenthesis around predicate
registers
--merror-noncontigious-register - Error for register names that aren't contigious
--mhvx - Enable Hexagon Vector eXtensions
--mhvx=<value> - Enable Hexagon Vector eXtensions
=v60 - Build for HVX v60
=v62 - Build for HVX v62
=v65 - Build for HVX v65
=v66 - Build for HVX v66
--mips-compact-branches=<value> - MIPS Specific: Compact branch policy.
=never
- Do not use compact branches if possible.
=optimal
- Use compact branches where appropiate (default).
=always
- Always use compact branches if possible.
--mips16-constant-islands - Enable mips16 constant islands.
--mips16-hard-float - Enable mips16 hard float.
--mno-compound - Disable looking for compound instructions for
Hexagon
--mno-fixup - Disable fixing up resolved relocations for Hexagon
--mno-ldc1-sdc1 - Expand double precision loads and stores to their
single precision counterparts
--mno-pairing - Disable looking for duplex instructions for Hexagon
--mwarn-missing-parenthesis - Warn for missing parenthesis around predicate
registers
--mwarn-noncontigious-register - Warn for register names that arent contigious
--mwarn-sign-mismatch - Warn for mismatching a signed and unsigned value
-n - Don't assume assembly file starts in the text
section
--no-deprecated-warn - Suppress all deprecated warnings
--no-discriminators - Disable generation of discriminator information.
--no-exec-stack - File doesn't need an exec stack
--no-warn - Suppress all warnings
--nvptx-sched4reg - NVPTX Specific: schedule for register pressue
-o=<filename> - Output filename
--output-asm-variant=<uint> - Syntax variant to use for output printing
--poison-checking-function-local - Check that returns are non-poison (for testing)
--position-independent - Position independent
--preserve-comments - Preserve Comments in outputted assembly
--print-imm-hex - Prefer hex format for immediate values
--r600-ir-structurize - Use StructurizeCFG IR pass
--rdf-dump -
--rdf-limit=<uint> -
--relax-relocations - Emit R_X86_64_GOTPCRELX instead of
R_X86_64_GOTPCREL
--safepoint-ir-verifier-print-only -
--sample-profile-check-record-coverage=<N> - Emit a warning if less than N% of records in the
input profile are matched to the IR.
--sample-profile-check-sample-coverage=<N> - Emit a warning if less than N% of samples in the
input profile are matched to the IR.
--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 temporary labels
--show-encoding - Show instruction encodings
--show-inst - Show internal instruction representation
--show-inst-operands - Show instructions operands as parsed
--speculative-counter-promotion-max-exiting=<uint> - The max number of exiting blocks of a loop to allow
speculative counter promotion
--speculative-counter-promotion-to-loop - When the option is false, if the target block is in
a loop, the promotion will be disallowed unless the promoted counter
update can be further/iteratively promoted into an acyclic region.
--split-dwarf-file=<filename> - DWO output filename
--summary-file=<string> - The summary file to use for function importing.
--threads=<int> -
--triple=<string> - Target triple to assemble for, see -version for
available targets
--verify-region-info - Verify region info (time consuming)
--vp-counters-per-site=<number> - The average number of profile counters allocated
per value profiling site.
--vp-static-alloc - Do static counter allocation for value profiler
--x86-align-branch=<(plus separated list of types)> - Specify types of branches to align. The branches's
types are combination of jcc, fused, jmp, call, ret, indirect. jcc indicates conditional jumps,
fused indicates fused conditional jumps, jmp indicates unconditional jumps, call indicates direct
and indirect calls, ret indicates rets, indirect indicates indirect jumps.
--x86-align-branch-boundary=<uint> - Control how the assembler should align branches
with NOP. If the boundary's size is not 0, it should be a power of 2 and no less than 32. Branches
will be aligned to prevent from being across or against the boundary of specified size. The
default value 0 does not align branches.
--x86-branches-within-32B-boundaries - Align selected instructions to mitigate negative
performance impact of Intel's micro code update for errata skx102.
May break assumptions about labels corresponding to particular instructions, and should be used
with caution.
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