LLI(1) User Commands LLI(1)
NAME
lli - manual page for lli 6.0
DESCRIPTION
OVERVIEW: llvm interpreter & dynamic compiler
USAGE: lli [options] <input bitcode> <program arguments>...
OPTIONS:
General options:
-O=<char> - Optimization level.
[-O0, -O1, -O2, or -O3] (default = '-O2')
-aarch64-neon-syntax - Choose style of
NEON code to emit from AArch64 backend:
=generic
- Emit generic NEON assembly
=apple - Emit Apple-style NEON assembly
-amdgpu-dump-hsa-metadata - Dump AMDGPU HSA
Metadata
-amdgpu-enable-merge-m0 - Merge and hoist M0
initializations
-amdgpu-sdwa-peephole - Enable SDWA peep-
holer
-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
-arm-add-build-attributes -
-arm-implicit-it - 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-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 in-
struction 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
-code-model - Choose 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)
-cost-kind - Target cost kind
=throughput
- Reciprocal throughput
=latency
- Instruction latency
=code-size
- Code size
-cvp-dont-process-adds -
-data-sections - Emit data into sep-
arate sections
-debug-counter - Comma separated
list of debug counter skip and count
=predicateinfo-rename
- Controls which variables are renamed with predicateinfo
=instcombine-visit
- Controls which instructions are visited
=newgvn-vn
- Controls which instructions are value numbered
=newgvn-phi
- Controls which instructions we create phi of ops for
=falkor-hwpf
- Controls which tag collisions are avoided
-debugger-tune - Tune debug info for
a particular debugger
=gdb - gdb
=lldb - lldb
=sce - SCE targets (e.g. PS4)
-denormal-fp-math - Select which denor-
mal numbers the code is permitted to require
=ieee - IEEE 754 denormal numbers
=preserve-sign
- the sign of a flushed-to-zero number is preserved in the
sign of 0
=positive-zero
- denormals are flushed to positive zero
-disable-fp-elim - Disable frame
pointer elimination optimization
-disable-lazy-compilation - Disable JIT lazy
compilation
-disable-tail-calls - Never emit tail
calls
-do-counter-promotion - Do counter register
promotion
-dwarf-version=<int> - Dwarf version
-emscripten-cxx-exceptions-whitelist=<string> - The list of func-
tion names in which Emscripten-style exception handling is en-
abled (see emscripten EMSCRIPTEN_CATCHING_WHITELIST options)
-emulated-tls - Use emulated TLS
model
-enable-cache-manager - Use cache manager
to save/load mdoules
-enable-emscripten-cxx-exceptions - WebAssembly Em-
scripten-style exception handling
-enable-emscripten-sjlj - WebAssembly Em-
scripten-style setjmp/longjmp handling
-enable-load-pre -
-enable-name-compression - Enable name string
compression
-enable-no-infs-fp-math - Enable FP math op-
timizations that assume no +-Infs
-enable-no-nans-fp-math - Enable FP math op-
timizations that assume no NaNs
-enable-no-signed-zeros-fp-math - Enable FP math op-
timizations that assume the sign of 0 is insignificant
-enable-no-trapping-fp-math - Enable setting the
FP exceptions build attribute not to use exceptions
-enable-packed-inlinable-literals - Enable packed in-
linable literals (v2f16, v2i16)
-enable-si-insert-waitcnts - Use new waitcnt in-
sertion pass
-enable-unsafe-fp-math - Enable optimiza-
tions that may decrease FP precision
-entry-function=<function> - Specify the entry
function (default = 'main') of the executable
-exception-model - exception model
=default
- default exception handling model
=dwarf - DWARF-like CFI based exception handling
=sjlj - SjLj exception handling
=arm - ARM EHABI exceptions
=wineh - Windows exception model
-expensive-combines - Enable expensive
instruction combines
-extra-archive=<input archive> - Extra archive files
to be loaded
-extra-module=<input bitcode> - Extra modules to be
loaded
-extra-object=<input object> - Extra object files
to be loaded
-fake-argv0=<executable> - Override the
'argv[0]' value passed into the executing program
-fatal-warnings - Treat warnings as
errors
-filetype - Choose a file type
(not all types are supported by all targets):
=asm - Emit an assembly ('.s') file
=obj - Emit a native object ('.o') file
=null - Emit nothing, for performance testing
-float-abi - Choose float ABI
type
=default
- Target default float ABI type
=soft - Soft float ABI (implied by -soft-float)
=hard - Hard float ABI (uses FP registers)
-force-interpreter - Force interpreta-
tion: disable JIT
-fp-contract - Enable aggressive
formation of fused FP ops
=fast - Fuse FP ops whenever profitable
=on - Only fuse 'blessed' FP ops.
=off - Only fuse FP ops when the result won't be affected.
-function-sections - Emit functions into
separate sections
-gpsize=<uint> - Global Pointer Ad-
dressing 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 in-
cremental linker
-instcombine-maxarray-size=<uint> - Maximum array size
considered when doing a combine
-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 pro-
motion across the whole loop nest.
-jit-kind - Choose underlying
JIT kind.
=mcjit
- MCJIT
=orc-mcjit
- Orc-based MCJIT replacement
=orc-lazy
- Orc-based lazy JIT.
-load=<pluginfilename> - Load the specified
plugin
-lto-pass-remarks-output=<filename> - Output filename for
pass remarks
-march=<string> - Architecture to
generate code for (see --version)
-mattr=<a1,+a2,-a3,...> - Target specific at-
tributes (-mattr=help for details)
-max-counter-promotions=<int> - Max number of al-
lowed 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
-mcjit-remote-process=<filename> - Specify the file-
name of the process to launch for remote MCJIT execution.
If none is specified, remote execution will be simulated
in-process.
-mcpu=<cpu-name> - Target a specific
cpu type (-mcpu=help for details)
-meabi - Set EABI type (de-
fault depends on triple):
=default
- Triple default EABI version
=4 - EABI version 4
=5 - EABI version 5
=gnu - EABI GNU
-memop-size-large=<uint> - Set large value
thresthold in memory intrinsic size profiling. Value of 0 dis-
ables 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 Vec-
tor eXtensions
=v60 - Build for HVX v60
=v62 - Build for HVX v62
=v65 - Build for HVX v65
= -
-mips-compact-branches - MIPS Specific: Com-
pact 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 con-
stant 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 pre-
cision loads and stores to their single precision counterparts
-mno-pairing - Disable looking for
duplex instructions for Hexagon
-mtriple=<string> - Override target
triple for module
-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 mismatch-
ing a signed and unsigned value
-no-deprecated-warn - Suppress all depre-
cated warnings
-no-discriminators - Disable generation
of discriminator information.
-no-warn - Suppress all warn-
ings
-nozero-initialized-in-bss - Don't place
zero-initialized symbols into bss section
-nvptx-sched4reg - NVPTX Specific:
schedule for register pressue
-object-cache-dir=<string> - Directory to store
cached object files (must be user writable)
-pie-copy-relocations - PIE Copy Reloca-
tions
-print-module-scope - When printing IR
for print-[before|after]{-all} always print a module IR
-r600-ir-structurize - Use StructurizeCFG
IR pass
-rdf-dump -
-rdf-limit=<uint> -
-relax-elf-relocations - Emit GOT-
PCRELX/REX_GOTPCRELX instead of GOTPCREL on x86-64 ELF
-relocation-model - Choose relocation
model
=static
- Non-relocatable code
=pic - Fully relocatable, position independent code
=dynamic-no-pic
- Relocatable external references, non-relocatable code
=ropi - Code and read-only data relocatable, accessed PC-relative
=rwpi - Read-write data relocatable, accessed relative to static
base
=ropi-rwpi
- Combination of ropi and rwpi
-remote-mcjit - Execute MCJIT'ed
code in a separate process.
-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-inline-hot-threshold=<N> - Inlined functions
that account for more than N% of all samples collected in the
parent function, will be inlined again.
-sample-profile-max-propagate-iterations=<uint> - Maximum number of
iterations to go through when propagating sample block/edge
weights through the CFG.
-soft-float - Generate software
floating point library calls
-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 disal-
lowed unless the promoted counter
update can be further/iteratively promoted into an acyclic re-
gion.
-stack-alignment=<uint> - Override default
stack alignment
-stack-size-section - Emit a section con-
taining stack size metadata
-stack-symbol-ordering - Order local stack
symbols.
-stackrealign - Force align the
stack to the minimum alignment
-summary-file=<string> - The summary file to
use for function importing.
-tailcallopt - Turn fastcc calls
into tail calls by (potentially) changing ABI.
-thread-model - Choose threading
model
=posix
- POSIX thread model
=single
- Single thread model
-threads=<int> -
-unfold-element-atomic-memcpy-max-elements=<uint> - Maximum number of
elements in atomic memcpy the optimizer is allowed to unfold
-unique-section-names - Give unique names
to every section
-use-ctors - Use .ctors instead
of .init_array.
-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
lli 6.0 May 2020 LLI(1)