llvm-mc-9 (1) Linux Manual Page

-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

–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

Index