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LLVM-DWARFDUMP(1) User Commands LLVM-DWARFDUMP(1)

NAME

llvm-dwarfdump - manual page for llvm-dwarfdump 5.0

DESCRIPTION

OVERVIEW: llvm dwarf dumper

USAGE: llvm-dwarfdump [options] <input object files or .dSYM bundles>

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
for promoted counters only

-bounds-checking-single-trap - Use one trap block per function

-brief - Print fewer low-level details

-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

-debug-dump - Dump of debug sections:

=all
- Dump all debug sections
=abbrev
- .debug_abbrev
=abbrev.dwo
- .debug_abbrev.dwo
=apple_names
- .apple_names
=apple_types
- .apple_types
=apple_namespaces
- .apple_namespaces
=apple_objc
- .apple_objc
=aranges
- .debug_aranges
=info
- .debug_info
=info.dwo
- .debug_info.dwo
=types
- .debug_types
=types.dwo
- .debug_types.dwo
=line
- .debug_line
=line.dwo
- .debug_line.dwo
=loc
- .debug_loc
=loc.dwo
- .debug_loc.dwo
=frames
- .debug_frame
=macro
- .debug_macinfo
=ranges
- .debug_ranges
=pubnames
- .debug_pubnames
=pubtypes
- .debug_pubtypes
=gnu_pubnames
- .debug_gnu_pubnames
=gnu_pubtypes
- .debug_gnu_pubtypes
=str
- .debug_str
=str_offsets
- .debug_str_offsets
=str.dwo
- .debug_str.dwo
=str_offsets.dwo
- .debug_str_offsets.dwo
=cu_index
- .debug_cu_index
=gdb_index
- .gdb_index
=tu_index
- .debug_tu_index

-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

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

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

-quiet - Use with -verify to not emit to STDOUT.

-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

speculative counter promotion
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

-summarize-types - Abbreviate the description of type unit entries

-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 - Verify the DWARF debug info

-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 llvm-dwarfdump is maintained as a Texinfo manual. If the info and llvm-dwarfdump programs are properly installed at your site, the command

info llvm-dwarfdump

should give you access to the complete manual.

March 2018 llvm-dwarfdump 5.0