Provided by: clang-5.0_5.0-3~16.04.1_amd64 
NAME
sancov - manual page for sancov 5.0
DESCRIPTION
OVERVIEW: Sanitizer Coverage Processing Tool (sancov)
This tool can extract various coverage-related information from: coverage-instrumented binary
files, raw .sancov files and their symbolized .symcov version. Depending on chosen action the
tool expects different input files:
-print-coverage-pcs - coverage-instrumented binary files
-print-coverage - .sancov files
<other actions>
- .sancov files & corresponding binary files, .symcov files
USAGE: sancov [options] <action> <binary files...> <.sancov files...> <.symcov files...>
OPTIONS:
General options:
-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
-blacklist=<string> - Blacklist file (sanitizer blacklist format).
-bounds-checking-single-trap - Use one trap block per function
-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
-demangle - Print demangled function name.
-disable-spill-fusing - Disable fusing of spill code into instructions
-do-counter-promotion - Do counter register promotion
-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 -
-exhaustive-register-search - Exhaustive Search for registers bypassing the depth
and interference cutoffs of last chance recoloring
-expensive-combines - Enable expensive instruction combines
-filter-print-funcs=<function names> - Only print IR for functions whose name match this for
all print-[before|after][-all] options
-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.
-join-liveintervals - Coalesce copies (default=true)
-limit-float-precision=<uint> - Generate low-precision inline sequences for some
float libcalls
-lto-pass-remarks-output=<filename> - Output filename for pass remarks
-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
-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
-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
-print-after-all - Print IR after each pass
-print-before-all - Print IR before each pass
Action (required)
-print - Print coverage addresses
-print-coverage-pcs - Print coverage instrumentation points addresses.
-covered-functions - Print all covered funcions.
-not-covered-functions - Print all not covered funcions.
-print-coverage-stats - Print coverage statistics.
-html-report - REMOVED. Use -symbolize & coverage-report-server.py.
-symbolize - Produces a symbolized JSON report from binary report.
-merge - Merges reports.
-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
-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
-skip-dead-files - Do not list dead source files in reports.
-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
-strip_path_prefix=<string> - Strip this prefix from file paths in reports.
-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 sancov is maintained as a Texinfo manual. If the info and sancov programs are
properly installed at your site, the command
info sancov
should give you access to the complete manual.
sancov 5.0 October 2017 SANCOV(1)