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LLI(1) User Commands LLI(1)

NAME

lli - manual page for lli 5.0

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-comd - Dump AMDGPU Code Object Metadata

-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-comd - Verify AMDGPU Code Object 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
-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

=default
- Target default JIT 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)

-cvp-dont-process-adds -

-debug-counter - Comma separated list of debug counter skip and count

=predicateinfo-rename
- Controls which variables are renamed with predicateinfo
=newgvn-vn
- Controls which instructions are value numbered
=newgvn-phi
- Controls which instructions we create phi of ops for

-disable-lazy-compilation - Disable JIT lazy compilation

-disable-spill-fusing - Disable fusing of spill code into instructions

-do-counter-promotion - Do counter register promotion

-enable-cache-manager - Use cache manager to save/load mdoules

-enable-implicit-null-checks - Fold null checks into faulting memory operations

-enable-load-pre -

-enable-name-compression - Enable name string compression

-enable-objc-arc-opts - enable/disable all ARC Optimizations

-enable-packed-inlinable-literals - Enable packed inlinable literals (v2f16, v2i16)

-enable-scoped-noalias -

-enable-si-insert-waitcnts - Use new waitcnt insertion pass

-enable-tbaa -

-entry-function=<function> - Specify the entry function (default = 'main') of the executable

-exhaustive-register-search - Exhaustive Search for registers bypassing the depth and interference cutoffs of last chance recoloring

-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

-filter-print-funcs=<function names> - Only print IR for functions whose name match this for all print-[before|after][-all] options

-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 interpretation: disable JIT

-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

-imp-null-check-page-size=<int> - The page size of the target in bytes

-imp-null-max-insts-to-consider=<uint> - The max number of instructions to consider hoisting loads over (the algorithm is quadratic over this number)

-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 promotion 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.

-join-liveintervals - Coalesce copies (default=true)

-limit-float-precision=<uint> - Generate low-precision inline sequences for some float libcalls

-load=<pluginfilename> - Load the specified plugin

-lto-pass-remarks-output=<filename> - Output filename for pass remarks

-march=<string> - Architecture to generate assembly for (see --version)

-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

-mcjit-remote-process=<filename> - Specify the filename 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)

-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

-mfuture-regs - Enable future registers

-mips-compact-branches - 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

-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 mismatching a signed and unsigned value

-no-discriminators - Disable generation of discriminator information.

-nvptx-sched4reg - NVPTX Specific: schedule for register pressue

-object-cache-dir=<string> - Directory to store cached object files (must be user writable)

-print-after-all - Print IR after each pass

-print-before-all - Print IR before each pass

-print-machineinstrs=<pass-name> - Print machine instrs

-r600-ir-structurize - Use StructurizeCFG IR pass

-rdf-dump -

-rdf-limit=<uint> -

-regalloc - Register allocator to use

=pbqp
- PBQP register allocator
=greedy
- greedy register allocator
=fast
- fast register allocator
=basic
- basic register allocator
=default
- pick register allocator based on -O option

-relocation-model - Choose relocation model

=static
- Non-relocatable code
=pic
- Fully relocatable, position independent code
=dynamic-no-pic
- Relocatable external references, non-relocatable code

-remote-mcjit - Execute MCJIT'ed code in a separate process.

-rewrite-map-file=<filename> - Symbol Rewrite Map

-rng-seed=<seed> - Seed for the random number generator

-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.

-simplify-mir - Leave out unnecessary information when printing MIR

-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 disallowed unless the promoted counter
update can be further/iteratively promoted into an acyclic region.

-stackmap-version=<int> - Specify the stackmap encoding version (default = 3)

-static-func-full-module-prefix - Use full module build paths in the profile counter names for static functions.

-static-func-strip-dirname-prefix=<uint> - Strip specified level of directory name from source path in the profile counter name for static functions.

-stats - Enable statistics output from program (available with Asserts)

-stats-json - Display statistics as json data

-summary-file=<string> - The summary file to use for function importing.

-threads=<int> -

-time-passes - Time each pass, printing elapsed time for each on exit

-unfold-element-atomic-memcpy-max-elements=<uint> - Maximum number of elements in atomic memcpy the optimizer is allowed to unfold

-verify-debug-info -

-verify-dom-info - Verify dominator info (time consuming)

-verify-loop-info - Verify loop info (time consuming)

-verify-loop-lcssa - Verify loop lcssa form (time consuming)

-verify-machine-dom-info - Verify machine dominator info (time consuming)

-verify-regalloc - Verify during register allocation

-verify-region-info - Verify region info (time consuming)

-verify-scev - Verify ScalarEvolution's backedge taken counts (slow)

-verify-scev-maps - Verify no dangling value in ScalarEvolution's ExprValueMap (slow)

-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-asm-syntax - Choose style of code to emit from X86 backend:

=att
- Emit AT&T-style assembly
=intel
- Emit Intel-style assembly

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

SEE ALSO

The full documentation for lli is maintained as a Texinfo manual. If the info and lli programs are properly installed at your site, the command
info lli

should give you access to the complete manual.

March 2018 lli 5.0