Provided by: clang-tools-15_15.0.7-0ubuntu0.22.04.3_amd64 
NAME
clang-repl - manual page for clang-repl 15
DESCRIPTION
USAGE: clang-repl [options] [code to run]
OPTIONS:
Color Options:
--color - Use colors in output
(default=autodetect)
General options:
--Xcc=<string> - Argument to pass to the
CompilerInvocation
--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
--aarch64-use-aa - Enable the use of AA during
codegen.
--abort-on-max-devirt-iterations-reached - Abort when the max iterations for
devirtualization CGSCC repeat pass is reached
--addrsig - Emit an address-significance
table
--align-loops=<uint> - Default alignment for loops
--allow-ginsert-as-artifact - Allow G_INSERT to be considered
an artifact. Hack around AMDGPU test infinite loops.
--amdgpu-bypass-slow-div - Skip 64-bit divide for dynamic
32-bit values
--amdgpu-disable-loop-alignment - Do not align and prefetch loops
--amdgpu-dpp-combine - Enable DPP combiner
--amdgpu-dump-hsa-metadata - Dump AMDGPU HSA Metadata
--amdgpu-enable-merge-m0 - Merge and hoist M0
initializations
--amdgpu-enable-power-sched - Enable scheduling to minimize mAI
power bursts
--amdgpu-igrouplp - Enable construction of
Instruction Groups and their ordering for scheduling
--amdgpu-promote-alloca-to-vector-limit=<uint> - Maximum byte size to consider
promote alloca to vector
--amdgpu-sdwa-peephole - Enable SDWA peepholer
--amdgpu-use-aa-in-codegen - Enable the use of AA during
codegen.
--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=<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
--atomic-first-counter - Use atomic fetch add for first
counter in a function (usually the entry counter)
--basic-block-sections=<all | <function list (file)> | labels | none> - Emit basic blocks into separate
sections
--bounds-checking-single-trap - Use one trap block per function
--cfg-hide-cold-paths=<number> - Hide blocks with relative
frequency below the given value
--cfg-hide-deoptimize-paths -
--cfg-hide-unreachable-paths -
--code-model=<value> - Choose code model
=tiny - Tiny code model
=small - Small code model
=kernel
- Kernel code model
=medium
- Medium code model
=large - Large code model
--cost-kind=<value> - Target cost kind
=throughput
- Reciprocal throughput
=latency
- Instruction latency
=code-size
- Code size
=size-latency
- Code size and latency
--data-sections - Emit data into separate sections
--debug-entry-values - Enable debug info for the debug
entry values.
--debug-info-correlate - Use debug info to correlate
profiles.
--debugger-tune=<value> - Tune debug info for a particular
debugger
=gdb - gdb
=lldb - lldb
=dbx - dbx
=sce - SCE targets (e.g. PS4)
--debugify-func-limit=<ulong> - Set max number of processed
functions per pass.
--debugify-level=<value> - Kind of debug info to add
=locations
- Locations only
=location+variables
- Locations and Variables
--debugify-quiet - Suppress verbose debugify output
--denormal-fp-math=<value> - Select which denormal 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
--denormal-fp-math-f32=<value> - Select which denormal numbers the
code is permitted to require for float
=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-i2p-p2i-opt - Disables inttoptr/ptrtoint
roundtrip optimization
--disable-promote-alloca-to-lds - Disable promote alloca to LDS
--disable-promote-alloca-to-vector - Disable promote alloca to vector
--disable-tail-calls - Never emit tail calls
--do-counter-promotion - Do counter register promotion
--dot-cfg-mssa=<file name for generated dot file> - file name for generated dot file
--dwarf-version=<int> - Dwarf version
--dwarf64 - Generate debugging info in the
64-bit DWARF format
--emit-call-site-info - Emit call site debug information,
if debug information is enabled.
--emit-dwarf-unwind=<value> - Whether to emit DWARF EH frame
entries.
=always
- Always emit EH frame entries
=no-compact-unwind
- Only emit EH frame entries when compact unwind is not available
=default
- Use target platform default
--emscripten-cxx-exceptions-allowed=<string> - The list of function names in
which Emscripten-style exception handling is enabled (see emscripten EMSCRIPTEN_CATCHING_ALLOWED
options)
--emulated-tls - Use emulated TLS model
--enable-approx-func-fp-math - Enable FP math optimizations that
assume approx func
--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-hoist - Enable the GVN hoisting pass
(default = off)
--enable-gvn-memdep -
--enable-gvn-sink - Enable the GVN sinking pass
(default = off)
--enable-jmc-instrument - Instrument functions with a call
to __CheckForDebuggerJustMyCode
--enable-load-in-loop-pre -
--enable-load-pre -
--enable-loop-simplifycfg-term-folding -
--enable-name-compression - Enable name/filename string
compression
--enable-no-infs-fp-math - Enable FP math optimizations that
assume no +-Infs
--enable-no-nans-fp-math - Enable FP math optimizations that
assume no NaNs
--enable-no-signed-zeros-fp-math - Enable FP math optimizations 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-split-backedge-in-load-pre -
--enable-unsafe-fp-math - Enable optimizations that may
decrease FP precision
--exception-model=<value> - 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
=wasm - WebAssembly exception handling
--execute-concurrency=<uint> - The number of threads used to
process all files in parallel. Set to 0 for hardware concurrency. This flag only applies to
all-TUs.
--executor=<string> - The name of the executor to use.
--experimental-debug-variable-locations - Use experimental new
value-tracking variable locations
--fatal-warnings - Treat warnings as errors
--filetype=<value> - 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
--filter=<string> - Only process files that match
this filter. This flag only applies to all-TUs.
--float-abi=<value> - 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-dwarf-frame-section - Always emit a debug frame
section.
--fp-contract=<value> - 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.
--frame-pointer=<value> - Specify frame pointer elimination
optimization
=all - Disable frame pointer elimination
=non-leaf
- Disable frame pointer elimination for non-leaf frame
=none - Enable frame pointer elimination
--fs-profile-debug-bw-threshold=<uint> - Only show debug message if the
source branch weight is greater
than this value.
--fs-profile-debug-prob-diff-threshold=<uint> - Only show debug message if the
branch probility is greater than this value (in percentage).
--function-sections - Emit functions into separate
sections
--generate-merged-base-profiles - When generating nested
context-sensitive profiles, always generate extra base profile for function with all its context
profiles merged into it.
--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
--hot-cold-split - Enable hot-cold splitting pass
--ignore-xcoff-visibility - Not emit the visibility attribute
for asm in AIX OS or give all symbols 'unspecified' visibility in XCOFF object file
--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-max-sink-users=<uint> - Maximum number of undroppable
users for instruction sinking
--instcombine-maxarray-size=<uint> - Maximum array size considered
when doing a combine
--instcombine-negator-enabled - Should we attempt to sink
negations?
--instcombine-negator-max-depth=<uint> - What is the maximal lookup depth
when trying to check for viability of negation sinking.
--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.
--lower-global-dtors-via-cxa-atexit - Lower llvm.global_dtors (global
destructors) via __cxa_atexit
--lto-embed-bitcode=<value> - Embed LLVM bitcode in object
files produced by LTO
=none - Do not embed
=optimized
- Embed after all optimization passes
=post-merge-pre-opt
- Embed post merge, but before optimizations
--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
--march=<string> - Architecture to generate code for
(see --version)
--matrix-default-layout=<value> - Sets the default matrix layout
=column-major
- Use column-major layout
=row-major
- Use row-major layout
--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
--mcabac - tbd
--mcpu=<cpu-name> - Target a specific cpu type
(-mcpu=help for details)
--meabi=<value> - Set EABI type (default depends on
triple):
=default
- Triple default EABI version
=4 - EABI version 4
=5 - EABI version 5
=gnu - EABI GNU
--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
=v67 - Build for HVX v67
=v68 - Build for HVX v68
=v69 - Build for HVX v69
--mips-compact-branches=<value> - MIPS Specific: Compact branch
policy.
=never
- Do not use compact branches if possible.
=optimal
- Use compact branches where appropriate (default).
=always
- Always use compact branches if possible.
--mips16-constant-islands - Enable mips16 constant islands.
--mips16-hard-float - Enable mips16 hard float.
--mir-strip-debugify-only - Should mir-strip-debug only strip
debug info from debugified modules by default
--misexpect-tolerance=<uint> - Prevents emiting diagnostics when
profile counts are within N% of the threshold..
--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
--no-deprecated-warn - Suppress all deprecated warnings
--no-discriminators - Disable generation of
discriminator information.
--no-type-check - Suppress type errors (Wasm)
--no-warn - Suppress all warnings
--no-xray-index - Don't emit xray_fn_idx section
--nozero-initialized-in-bss - Don't place zero-initialized
symbols into bss section
--nvptx-sched4reg - NVPTX Specific: schedule for
register pressue
--opaque-pointers - Use opaque pointers
--poison-checking-function-local - Check that returns are non-poison
(for testing)
--print-pipeline-passes - Print a '-passes' compatible
string describing the pipeline (best-effort only).
--r600-ir-structurize - Use StructurizeCFG IR pass
--rdf-dump -
--rdf-limit=<uint> -
--relax-elf-relocations - Emit GOTPCRELX/REX_GOTPCRELX
instead of GOTPCREL on x86-64 ELF
--relocation-model=<value> - 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
--runtime-counter-relocation - Enable relocating counters at
runtime.
--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.
--skip-ret-exit-block - Suppress counter promotion if
exit blocks contain ret.
--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-machine-functions - Split out cold basic blocks from
machine functions based on profile information
--stack-size-section - Emit a section containing stack
size metadata
--stack-symbol-ordering - Order local stack symbols.
--stackrealign - Force align the stack to the
minimum alignment
--strict-dwarf - use strict dwarf
--summary-file=<string> - The summary file to use for
function importing.
--sve-tail-folding=<string> - Control the use of vectorisation
using tail-folding for SVE:
disabled No loop types will vectorize using tail-folding default Uses the default
tail-folding settings for the target CPU all All legal loop types will vectorize using
tail-folding simple Use tail-folding for simple loops (not reductions or recurrences)
reductions Use tail-folding for loops containing reductions recurrences Use tail-folding for
loops containing first order recurrences
--swift-async-fp=<value> - Determine when the Swift async
frame pointer should be set
=auto - Determine based on deployment target
=always
- Always set the bit
=never - Never set the bit
--tail-predication=<value> - MVE tail-predication pass options
=disabled
- Don't tail-predicate loops
=enabled-no-reductions
- Enable tail-predication, but not for reduction loops
=enabled
- Enable tail-predication, including reduction loops
=force-enabled-no-reductions
- Enable tail-predication, but not for reduction loops, and force this which might be unsafe
=force-enabled
- Enable tail-predication, including reduction loops, and force this which might be unsafe
--tailcallopt - Turn fastcc calls into tail calls
by (potentially) changing ABI.
--thinlto-assume-merged - Assume the input has already
undergone ThinLTO function importing and the other pre-optimization pipeline changes.
--thread-model=<value> - Choose threading model
=posix
- POSIX thread model
=single
- Single thread model
--threads=<int> -
--tls-size=<uint> - Bit size of immediate TLS offsets
--type-based-intrinsic-cost - Calculate intrinsics cost based
only on argument types
--unique-basic-block-section-names - Give unique names to every basic
block section
--unique-section-names - Give unique names to every
section
--use-ctors - Use .ctors instead of
.init_array.
--vec-extabi - Enable the AIX Extended Altivec
ABI.
--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
--wasm-enable-eh - WebAssembly exception handling
--wasm-enable-sjlj - WebAssembly setjmp/longjmp
handling
--x86-align-branch=<string> - Specify types of branches to
align (plus separated list of types):
jcc indicates conditional jumps fused indicates fused conditional jumps jmp indicates
direct unconditional jumps call indicates direct and indirect calls ret indicates rets
indirect indicates indirect unconditional 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.
--x86-pad-max-prefix-size=<uint> - Maximum number of prefixes to use
for padding
--xcoff-traceback-table - Emit the XCOFF traceback table
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
Polly Options: Configure the polly loop optimizer
--polly - Enable the polly optimizer (with
-O1, -O2 or -O3)
--polly-2nd-level-tiling - Enable a 2nd level loop of loop
tiling
--polly-ast-print-accesses - Print memory access functions
--polly-context=<isl parameter set> - Provide additional constraints on
the context parameters
--polly-dce-precise-steps=<int> - The number of precise steps
between two approximating iterations. (A value of -1 schedules another approximation stage before
the actual dead code elimination.
--polly-delicm-max-ops=<int> - Maximum number of isl operations
to invest for lifetime analysis; 0=no limit
--polly-detect-full-functions - Allow the detection of full
functions
--polly-dump-after - Dump module after Polly
transformations into a file suffixed with "-after"
--polly-dump-after-file=<string> - Dump module after Polly
transformations to the given file
--polly-dump-before - Dump module before Polly
transformations into a file suffixed with "-before"
--polly-dump-before-file=<string> - Dump module before Polly
transformations to the given file
--polly-enable-simplify - Simplify SCoP after optimizations
--polly-ignore-func=<string> - Ignore functions that match a
regex. Multiple regexes can be comma separated. Scop detection will ignore all functions that
match ANY of the regexes provided.
--polly-isl-arg=<argument> - Option passed to ISL
--polly-on-isl-error-abort - Abort if an isl error is
encountered
--polly-only-func=<string> - Only run on functions that match
a regex. Multiple regexes can be comma separated. Scop detection will run on all functions that
match ANY of the regexes provided.
--polly-only-region=<identifier> - Only run on certain regions (The
provided identifier must appear in the name of the region's entry block
--polly-only-scop-detection - Only run scop detection, but no
other optimizations
--polly-optimized-scops - Polly - Dump polyhedral
description of Scops optimized with the isl scheduling optimizer and the set of post-scheduling
transformations is applied on the schedule tree
--polly-parallel - Generate thread parallel code
(isl codegen only)
--polly-parallel-force - Force generation of thread
parallel code ignoring any cost model
--polly-pattern-matching-based-opts - Perform optimizations based on
pattern matching
--polly-postopts - Apply post-rescheduling
optimizations such as tiling (requires -polly-reschedule)
--polly-pragma-based-opts - Apply user-directed
transformation from metadata
--polly-pragma-ignore-depcheck - Skip the dependency check for
pragma-based transformations
--polly-process-unprofitable - Process scops that are unlikely
to benefit from Polly optimizations.
--polly-register-tiling - Enable register tiling
--polly-report - Print information about the
activities of Polly
--polly-reschedule - Optimize SCoPs using ISL
--polly-show - Highlight the code regions that
will be optimized in a (CFG BBs and LLVM-IR instructions)
--polly-show-only - Highlight the code regions that
will be optimized in a (CFG only BBs)
--polly-stmt-granularity=<value> - Algorithm to use for splitting
basic blocks into multiple statements
=bb - One statement per basic block
=scalar-indep
- Scalar independence heuristic
=store - Store-level granularity
--polly-target=<value> - The hardware to target
=cpu - generate CPU code
--polly-tiling - Enable loop tiling
--polly-vectorizer=<value> - Select the vectorization strategy
=none - No Vectorization
=polly - Polly internal vectorizer
=stripmine
- Strip-mine outer loops for the loop-vectorizer to trigger