Provided by: llvm-9_9.0.1-12_amd64 
NAME
llvm-mc - manual page for llvm-mc 9
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-spill-sgpr-to-smem - Use scalar stores to spill SGPRs if
supported by subtarget
--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 -
--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-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-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)
--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
--pie-copy-relocations - PIE Copy Relocations
--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
--remarks-section - Emit a section containing remark
diagnostics metadata
--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> -
--time-trace-granularity=<uint> - Minimum time granularity (in
microseconds) traced by time profiler
--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
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