Provided by: clang-tools-15_15.0.7-10_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