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