1 include "llvm/Option/OptParser.td"
3 // Convenience classes for long options which only accept two dashes. For lld
4 // specific or newer long options, we prefer two dashes to avoid collision with
5 // short options. For many others, we have to accept both forms to be compatible
7 class FF<string name> : Flag<["--"], name>;
8 class JJ<string name>: Joined<["--"], name>;
10 multiclass EEq<string name, string help> {
11 def NAME: Separate<["--"], name>;
12 def NAME # _eq: Joined<["--"], name # "=">, Alias<!cast<Separate>(NAME)>,
16 multiclass BB<string name, string help1, string help2> {
17 def NAME: Flag<["--"], name>, HelpText<help1>;
18 def no_ # NAME: Flag<["--"], "no-" # name>, HelpText<help2>;
21 // For options whose names are multiple letters, either one dash or
22 // two can precede the option name except those that start with 'o'.
23 class F<string name>: Flag<["--", "-"], name>;
24 class J<string name>: Joined<["--", "-"], name>;
26 multiclass Eq<string name, string help> {
27 def NAME: Separate<["--", "-"], name>;
28 def NAME # _eq: Joined<["--", "-"], name # "=">, Alias<!cast<Separate>(NAME)>,
32 multiclass B<string name, string help1, string help2> {
33 def NAME: Flag<["--", "-"], name>, HelpText<help1>;
34 def no_ # NAME: Flag<["--", "-"], "no-" # name>, HelpText<help2>;
37 defm auxiliary: Eq<"auxiliary", "Set DT_AUXILIARY field to the specified name">;
39 def Bno_symbolic: F<"Bno-symbolic">, HelpText<"Don't bind default visibility defined symbols locally for -shared (default)">;
41 def Bsymbolic: F<"Bsymbolic">, HelpText<"Bind default visibility defined symbols locally for -shared">;
43 def Bsymbolic_functions: F<"Bsymbolic-functions">,
44 HelpText<"Bind default visibility defined function symbols locally for -shared">;
46 def Bsymbolic_non_weak_functions: F<"Bsymbolic-non-weak-functions">,
47 HelpText<"Bind default visibility defined STB_GLOBAL function symbols locally for -shared">;
49 def Bdynamic: F<"Bdynamic">, HelpText<"Link against shared libraries (default)">;
51 def Bstatic: F<"Bstatic">, HelpText<"Do not link against shared libraries">;
53 def build_id: J<"build-id=">, HelpText<"Generate build ID note">,
54 MetaVarName<"[fast,md5,sha1,uuid,0x<hexstring>]">;
55 def : F<"build-id">, Alias<build_id>, AliasArgs<["fast"]>, HelpText<"Alias for --build-id=fast">;
57 defm check_sections: B<"check-sections",
58 "Check section addresses for overlaps (default)",
59 "Do not check section addresses for overlaps">;
61 defm compress_debug_sections:
62 Eq<"compress-debug-sections", "Compress DWARF debug sections">,
63 MetaVarName<"[none,zlib]">;
65 defm defsym: Eq<"defsym", "Define a symbol alias">, MetaVarName<"<symbol>=<value>">;
67 defm optimize_bb_jumps: BB<"optimize-bb-jumps",
68 "Remove direct jumps at the end to the next basic block",
69 "Do not remove any direct jumps at the end to the next basic block (default)">;
71 defm fortran_common : BB<"fortran-common",
72 "Search archive members for definitions to override COMMON symbols (default)",
73 "Do not search archive members for definitions to override COMMON symbols">;
75 defm split_stack_adjust_size
76 : Eq<"split-stack-adjust-size",
77 "Specify adjustment to stack size when a split-stack function calls a "
78 "non-split-stack function">,
79 MetaVarName<"<value>">;
81 def O: JoinedOrSeparate<["-"], "O">, HelpText<"Optimize output file size">;
83 defm Tbss: Eq<"Tbss", "Same as --section-start with .bss as the sectionname">;
85 defm Tdata: Eq<"Tdata", "Same as --section-start with .data as the sectionname">;
87 defm Ttext: Eq<"Ttext", "Same as --section-start with .text as the sectionname">;
89 def Ttext_segment: Separate<["-", "--"], "Ttext-segment">;
91 defm allow_multiple_definition: B<"allow-multiple-definition",
92 "Allow multiple definitions",
93 "Do not allow multiple definitions (default)">;
95 defm allow_shlib_undefined: B<"allow-shlib-undefined",
96 "Allow unresolved references in shared libraries (default when linking a shared library)",
97 "Do not allow unresolved references in shared libraries (default when linking an executable)">;
99 defm apply_dynamic_relocs: BB<"apply-dynamic-relocs",
100 "Apply link-time values for dynamic relocations",
101 "Do not apply link-time values for dynamic relocations (default)">;
103 defm dependent_libraries: BB<"dependent-libraries",
104 "Process dependent library specifiers from input files (default)",
105 "Ignore dependent library specifiers from input files">;
107 defm as_needed: B<"as-needed",
108 "Only set DT_NEEDED for shared libraries if used",
109 "Always set DT_NEEDED for shared libraries (default)">;
111 defm call_graph_ordering_file:
112 Eq<"call-graph-ordering-file", "Layout sections to optimize the given callgraph">;
114 defm call_graph_profile_sort: BB<"call-graph-profile-sort",
115 "Reorder sections with call graph profile (default)",
116 "Do not reorder sections with call graph profile">;
118 // --chroot doesn't have a help text because it is an internal option.
119 def chroot: Separate<["--"], "chroot">;
121 def color_diagnostics: JJ<"color-diagnostics=">,
122 HelpText<"Use colors in diagnostics (default: auto)">,
123 MetaVarName<"[auto,always,never]">;
124 def : Flag<["--"], "color-diagnostics">, Alias<color_diagnostics>, AliasArgs<["always"]>,
125 HelpText<"Alias for --color-diagnostics=always">;
126 def : Flag<["--"], "no-color-diagnostics">, Alias<color_diagnostics>, AliasArgs<["never"]>,
127 HelpText<"Alias for --color-diagnostics=never">;
129 def cref: FF<"cref">,
130 HelpText<"Output cross reference table. If -Map is specified, print to the map file">;
132 defm demangle: B<"demangle",
133 "Demangle symbol names (default)",
134 "Do not demangle symbol names">;
136 defm dependency_file: EEq<"dependency-file", "Write a dependency file">,
137 MetaVarName<"<file>">;
139 def disable_new_dtags: F<"disable-new-dtags">,
140 HelpText<"Disable new dynamic tags">;
142 def discard_all: F<"discard-all">, HelpText<"Delete all local symbols">;
144 def discard_locals: F<"discard-locals">,
145 HelpText<"Delete temporary local symbols">;
147 def discard_none: F<"discard-none">,
148 HelpText<"Keep all symbols in the symbol table">;
150 defm dynamic_linker: Eq<"dynamic-linker", "Which dynamic linker to use">;
152 defm dynamic_list : Eq<"dynamic-list",
153 "Similar to --export-dynamic-symbol-list. When creating a shared object, "
154 "this additionally implies -Bsymbolic but does not set DF_SYMBOLIC">,
155 MetaVarName<"<file>">;
157 def eb: F<"EB">, HelpText<"Select the big-endian format in OUTPUT_FORMAT">;
158 def el: F<"EL">, HelpText<"Select the little-endian format in OUTPUT_FORMAT">;
160 defm eh_frame_hdr: B<"eh-frame-hdr",
161 "Request creation of .eh_frame_hdr section and PT_GNU_EH_FRAME segment header",
162 "Do not create .eh_frame_hdr section">;
164 def emit_relocs: F<"emit-relocs">, HelpText<"Generate relocations in output">;
166 def enable_new_dtags: F<"enable-new-dtags">,
167 HelpText<"Enable new dynamic tags (default)">;
169 def end_group: F<"end-group">,
170 HelpText<"Ignored for compatibility with GNU unless you pass --warn-backrefs">;
172 def end_lib: F<"end-lib">,
173 HelpText<"End a grouping of objects that should be treated as if they were together in an archive">;
175 defm entry: Eq<"entry", "Name of entry point symbol">,
176 MetaVarName<"<entry>">;
179 EEq<"error-limit", "Maximum number of errors to emit before stopping (0 = no limit)">;
181 def error_unresolved_symbols: F<"error-unresolved-symbols">,
182 HelpText<"Report unresolved symbols as errors">;
184 defm error_handling_script: EEq<"error-handling-script",
185 "Specify an error handling script">;
187 defm exclude_libs: Eq<"exclude-libs", "Exclude static libraries from automatic export">;
189 defm execute_only: BB<"execute-only",
190 "Mark executable sections unreadable",
191 "Mark executable sections readable (default)">;
193 defm export_dynamic: B<"export-dynamic",
194 "Put symbols in the dynamic symbol table",
195 "Do not put symbols in the dynamic symbol table (default)">;
197 defm export_dynamic_symbol : EEq<"export-dynamic-symbol",
198 "(executable) Put matched symbols in the dynamic symbol table. "
199 "(shared object) References to matched non-local STV_DEFAULT symbols "
200 "shouldn't be bound to definitions within the shared object. "
201 "Does not imply -Bsymbolic.">,
204 defm export_dynamic_symbol_list : EEq<"export-dynamic-symbol-list",
205 "Read a list of dynamic symbol patterns. Apply --export-dynamic-symbol on each pattern">,
208 defm fatal_warnings: B<"fatal-warnings",
209 "Treat warnings as errors",
210 "Do not treat warnings as errors (default)">;
212 defm filter: Eq<"filter", "Set DT_FILTER field to the specified name">;
214 defm fini: Eq<"fini", "Specify a finalizer function">, MetaVarName<"<symbol>">;
216 def fix_cortex_a53_843419: F<"fix-cortex-a53-843419">,
217 HelpText<"Apply fixes for AArch64 Cortex-A53 erratum 843419">;
219 def fix_cortex_a8: F<"fix-cortex-a8">,
220 HelpText<"Apply fixes for ARM Cortex-A8 erratum 657417">;
222 defm format: Eq<"format", "Change the input format of the inputs following this option">,
223 MetaVarName<"[default,elf,binary]">;
225 defm gc_sections: B<"gc-sections",
226 "Enable garbage collection of unused sections",
227 "Disable garbage collection of unused sections (default)">;
229 defm gdb_index: BB<"gdb-index",
230 "Generate .gdb_index section",
231 "Do not generate .gdb_index section (default)">;
233 defm gnu_unique: BB<"gnu-unique",
234 "Enable STB_GNU_UNIQUE symbol binding (default)",
235 "Disable STB_GNU_UNIQUE symbol binding">;
237 defm hash_style: Eq<"hash-style", "Specify hash style (sysv, gnu or both)">;
239 def help: F<"help">, HelpText<"Print option help">;
241 def icf_all: F<"icf=all">, HelpText<"Enable identical code folding">;
243 def icf_safe: F<"icf=safe">, HelpText<"Enable safe identical code folding">;
245 def icf_none: F<"icf=none">, HelpText<"Disable identical code folding (default)">;
247 def ignore_function_address_equality: FF<"ignore-function-address-equality">,
248 HelpText<"lld can break the address equality of functions">;
250 def ignore_data_address_equality: FF<"ignore-data-address-equality">,
251 HelpText<"lld can break the address equality of data">;
253 defm image_base: EEq<"image-base", "Set the base address">;
255 defm init: Eq<"init", "Specify an initializer function">,
256 MetaVarName<"<symbol>">;
258 defm just_symbols: Eq<"just-symbols", "Just link symbols">;
260 defm keep_unique: Eq<"keep-unique", "Do not fold this symbol during ICF">;
262 def library: JoinedOrSeparate<["-"], "l">, MetaVarName<"<libname>">,
263 HelpText<"Search for library <libname>">;
264 def library_path: JoinedOrSeparate<["-"], "L">, MetaVarName<"<dir>">,
265 HelpText<"Add <dir> to the library search path">;
267 def m: JoinedOrSeparate<["-"], "m">, HelpText<"Set target emulation">;
269 defm Map: Eq<"Map", "Print a link map to the specified file">;
271 defm merge_exidx_entries: B<"merge-exidx-entries",
272 "Enable merging .ARM.exidx entries (default)",
273 "Disable merging .ARM.exidx entries">;
275 defm mmap_output_file: BB<"mmap-output-file",
276 "Mmap the output file for writing (default)",
277 "Do not mmap the output file for writing">;
279 def nmagic: F<"nmagic">, MetaVarName<"<magic>">,
280 HelpText<"Do not page align sections, link against static libraries.">;
282 def nostdlib: F<"nostdlib">,
283 HelpText<"Only search directories specified on the command line">;
285 def no_dynamic_linker: F<"no-dynamic-linker">,
286 HelpText<"Inhibit output of .interp section">;
288 def noinhibit_exec: F<"noinhibit-exec">,
289 HelpText<"Retain the executable output file whenever it is still usable">;
291 def no_nmagic: F<"no-nmagic">, MetaVarName<"<magic>">,
292 HelpText<"Page align sections (default)">;
294 def no_omagic: F<"no-omagic">, MetaVarName<"<magic>">,
295 HelpText<"Do not set the text data sections to be writable, page align sections (default)">;
297 def no_undefined: F<"no-undefined">,
298 HelpText<"Report unresolved symbols even if the linker is creating a shared library">;
300 def o: JoinedOrSeparate<["-"], "o">, MetaVarName<"<path>">,
301 HelpText<"Path to file to write output">;
303 defm oformat: EEq<"oformat", "Specify the binary format for the output object file">,
304 MetaVarName<"[elf,binary]">;
306 def omagic: FF<"omagic">, MetaVarName<"<magic>">,
307 HelpText<"Set the text and data sections to be readable and writable, do not page align sections, link against static libraries">;
309 defm orphan_handling:
310 Eq<"orphan-handling", "Control how orphan sections are handled when linker script used">;
312 defm pack_dyn_relocs:
313 EEq<"pack-dyn-relocs", "Pack dynamic relocations in the given format">,
314 MetaVarName<"[none,android,relr,android+relr]">;
316 defm use_android_relr_tags: BB<"use-android-relr-tags",
317 "Use SHT_ANDROID_RELR / DT_ANDROID_RELR* tags instead of SHT_RELR / DT_RELR*",
318 "Use SHT_RELR / DT_RELR* tags (default)">;
320 def pic_veneer: F<"pic-veneer">,
321 HelpText<"Always generate position independent thunks (veneers)">;
324 "Create a position independent executable",
325 "Do not create a position independent executable (default)">;
327 defm print_gc_sections: B<"print-gc-sections",
328 "List removed unused sections",
329 "Do not list removed unused sections (default)">;
331 defm print_icf_sections: B<"print-icf-sections",
332 "List identical folded sections",
333 "Do not list identical folded sections (default)">;
335 def print_archive_stats: J<"print-archive-stats=">,
336 HelpText<"Write archive usage statistics to the specified file. "
337 "Print the numbers of members and extracted members for each archive">;
339 defm print_symbol_order: Eq<"print-symbol-order",
340 "Print a symbol order specified by --call-graph-ordering-file into the specified file">;
342 def pop_state: F<"pop-state">,
343 HelpText<"Restore the states saved by --push-state">;
345 def push_state: F<"push-state">,
346 HelpText<"Save the current state of --as-needed, -static and --whole-archive">;
348 def print_map: F<"print-map">,
349 HelpText<"Print a link map to the standard output">;
351 defm relax: BB<"relax",
352 "Enable target-specific relaxations if supported (default)",
353 "Disable target-specific relaxations">;
357 "Write tar file containing inputs and command to reproduce link">;
359 defm rosegment: BB<"rosegment",
360 "Put read-only non-executable sections in their own segment (default)",
361 "Do not put read-only non-executable sections in their own segment">;
363 defm rpath: Eq<"rpath", "Add a DT_RUNPATH to the output">;
365 def relocatable: F<"relocatable">, HelpText<"Create relocatable object file">;
367 defm retain_symbols_file:
368 Eq<"retain-symbols-file", "Retain only the symbols listed in the file">,
369 MetaVarName<"<file>">;
371 defm script: Eq<"script", "Read linker script">;
373 defm section_start: Eq<"section-start", "Set address of section">,
374 MetaVarName<"<address>">;
376 def shared: F<"shared">, HelpText<"Build a shared object">;
378 defm soname: Eq<"soname", "Set DT_SONAME">;
381 Eq<"sort-section", "Specifies sections sorting rule when linkerscript is used">;
383 def start_group: F<"start-group">,
384 HelpText<"Ignored for compatibility with GNU unless you pass --warn-backrefs">;
386 def start_lib: F<"start-lib">,
387 HelpText<"Start a grouping of objects that should be treated as if they were together in an archive">;
389 def strip_all: F<"strip-all">, HelpText<"Strip all symbols. Implies --strip-debug">;
391 def strip_debug: F<"strip-debug">, HelpText<"Strip debugging information">;
393 defm symbol_ordering_file:
394 EEq<"symbol-ordering-file", "Layout sections to place symbols in the order specified by symbol ordering file">;
396 defm sysroot: Eq<"sysroot", "Set the system root">;
398 def target1_rel: F<"target1-rel">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_REL32">;
400 def target1_abs: F<"target1-abs">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_ABS32 (default)">;
403 Eq<"target2", "Interpret R_ARM_TARGET2 as <type>, where <type> is one of rel, abs, or got-rel">,
404 MetaVarName<"<type>">;
408 "Number of threads. '1' disables multi-threading. By default all "
409 "available hardware threads are used">;
411 def time_trace_eq: JJ<"time-trace=">, MetaVarName<"<file>">,
412 HelpText<"Record time trace to <file>">;
413 def : FF<"time-trace">, Alias<time_trace_eq>,
414 HelpText<"Record time trace to file next to output">;
416 defm time_trace_granularity: EEq<"time-trace-granularity",
417 "Minimum time granularity (in microseconds) traced by time profiler">;
419 defm toc_optimize : BB<"toc-optimize",
420 "(PowerPC64) Enable TOC related optimizations (default)",
421 "(PowerPC64) Disable TOC related optimizations">;
423 defm pcrel_optimize : BB<"pcrel-optimize",
424 "(PowerPC64) Enable PC-relative optimizations (default)",
425 "(PowerPC64) Disable PC-relative optimizations">;
427 def trace: F<"trace">, HelpText<"Print the names of the input files">;
429 defm trace_symbol: Eq<"trace-symbol", "Trace references to symbols">;
431 defm undefined: Eq<"undefined", "Force undefined symbol during linking">,
432 MetaVarName<"<symbol>">;
434 defm undefined_glob: EEq<"undefined-glob", "Force undefined symbol during linking">,
435 MetaVarName<"<pattern>">;
437 def unique: F<"unique">, HelpText<"Creates a separate output section for every orphan input section">;
439 defm unresolved_symbols:
440 Eq<"unresolved-symbols", "Determine how to handle unresolved symbols">;
442 defm undefined_version: B<"undefined-version",
443 "Allow unused version in version script (default)",
444 "Report version scripts that refer undefined symbols">;
446 defm rsp_quoting: EEq<"rsp-quoting", "Quoting style for response files">,
447 MetaVarName<"[posix,windows]">;
449 def v: Flag<["-"], "v">, HelpText<"Display the version number">;
451 def verbose: F<"verbose">, HelpText<"Verbose mode">;
453 def version: F<"version">, HelpText<"Display the version number and exit">;
455 def power10_stubs_eq: JJ<"power10-stubs=">, MetaVarName<"<mode>">,
456 HelpText<"Whether to use Power10 instructions in call stubs for R_PPC64_REL24_NOTOC and TOC/NOTOC "
457 "interworking (yes (default): use; no: don't use). \"auto\" is currently the same as \"yes\"">;
458 def power10_stubs: FF<"power10-stubs">, Alias<power10_stubs_eq>, AliasArgs<["yes"]>,
459 HelpText<"Alias for --power10-stubs=auto">;
460 def no_power10_stubs: FF<"no-power10-stubs">, Alias<power10_stubs_eq>, AliasArgs<["no"]>,
461 HelpText<"Alias for --power10-stubs=no">;
463 defm version_script: Eq<"version-script", "Read a version script">;
465 defm warn_backrefs: BB<"warn-backrefs",
466 "Warn about backward symbol references to extract archive members",
467 "Do not warn about backward symbol references to extract archive members (default)">;
469 defm warn_backrefs_exclude
470 : EEq<"warn-backrefs-exclude",
471 "Glob describing an archive (or an object file within --start-lib) "
472 "which should be ignored for --warn-backrefs.">,
473 MetaVarName<"<glob>">;
475 defm warn_common: B<"warn-common",
476 "Warn about duplicate common symbols",
477 "Do not warn about duplicate common symbols (default)">;
479 defm warn_ifunc_textrel: BB<"warn-ifunc-textrel",
480 "Warn about using ifunc symbols with text relocations",
481 "Do not warn about using ifunc symbols with text relocations (default)">;
483 defm warn_symbol_ordering: BB<"warn-symbol-ordering",
484 "Warn about problems with the symbol ordering file (default)",
485 "Do not warn about problems with the symbol ordering file">;
487 def warn_unresolved_symbols: F<"warn-unresolved-symbols">,
488 HelpText<"Report unresolved symbols as warnings">;
490 defm whole_archive: B<"whole-archive",
491 "Force load of all members in a static library",
492 "Do not force load of all members in a static library (default)">;
494 def why_extract: JJ<"why-extract=">, HelpText<"Print to a file about why archive members are extracted">;
496 defm wrap : Eq<"wrap", "Redirect symbol references to __wrap_symbol and "
497 "__real_symbol references to symbol">,
498 MetaVarName<"<symbol>">;
500 def z: JoinedOrSeparate<["-"], "z">, MetaVarName<"<option>">,
501 HelpText<"Linker option extensions">;
503 def visual_studio_diagnostics_format : FF<"vs-diagnostics">,
504 HelpText<"Format diagnostics for Visual Studio compatibility">;
506 def package_metadata: JJ<"package-metadata=">, HelpText<"Emit package metadata note">;
509 def: Separate<["-"], "f">, Alias<auxiliary>, HelpText<"Alias for --auxiliary">;
510 def: F<"call_shared">, Alias<Bdynamic>, HelpText<"Alias for --Bdynamic">;
511 def: F<"dy">, Alias<Bdynamic>, HelpText<"Alias for --Bdynamic">;
512 def: F<"dn">, Alias<Bstatic>, HelpText<"Alias for --Bstatic">;
513 def: F<"non_shared">, Alias<Bstatic>, HelpText<"Alias for --Bstatic">;
514 def: F<"static">, Alias<Bstatic>, HelpText<"Alias for --Bstatic">;
515 def: Flag<["-"], "x">, Alias<discard_all>, HelpText<"Alias for --discard-all">;
516 def: Flag<["-"], "X">, Alias<discard_locals>, HelpText<"Alias for --discard-locals">;
517 def: Flag<["-"], "q">, Alias<emit_relocs>, HelpText<"Alias for --emit-relocs">;
518 def: Flag<["-"], ")">, Alias<end_group>, HelpText<"Alias for --end-group">;
519 def: JoinedOrSeparate<["-"], "e">, Alias<entry>, HelpText<"Alias for --entry">;
520 def: Flag<["-"], "E">, Alias<export_dynamic>, HelpText<"Alias for --export-dynamic">;
521 def: Separate<["-"], "F">, Alias<filter>, HelpText<"Alias for --filter">;
522 def: Separate<["-"], "b">, Alias<format>, HelpText<"Alias for --format">;
523 def: Separate<["--", "-"], "library">, Alias<library>;
524 def: Joined<["--", "-"], "library=">, Alias<library>;
525 def: Separate<["--", "-"], "library-path">, Alias<library_path>;
526 def: Joined<["--", "-"], "library-path=">, Alias<library_path>;
527 def: Flag<["-"], "n">, Alias<nmagic>, HelpText<"Alias for --nmagic">;
528 def: Flag<["-"], "N">, Alias<omagic>, HelpText<"Alias for --omagic">;
529 def: Joined<["--"], "output=">, Alias<o>, HelpText<"Alias for -o">;
530 def: Separate<["--"], "output">, Alias<o>, HelpText<"Alias for -o">;
531 def: F<"pic-executable">, Alias<pie>, HelpText<"Alias for --pie">;
532 def: Flag<["-"], "M">, Alias<print_map>, HelpText<"Alias for --print-map">;
533 def: Flag<["-"], "r">, Alias<relocatable>, HelpText<"Alias for --relocatable">;
534 def: JoinedOrSeparate<["-"], "R">, Alias<rpath>, HelpText<"Alias for --rpath">;
535 def: JoinedOrSeparate<["-"], "T">, Alias<script>, HelpText<"Alias for --script">;
536 def: F<"Bshareable">, Alias<shared>, HelpText<"Alias for --shared">;
537 def: JoinedOrSeparate<["-"], "h">, Alias<soname>, HelpText<"Alias for --soname">;
538 def: Flag<["-"], "(">, Alias<start_group>, HelpText<"Alias for --start-group">;
539 def: Flag<["-"], "s">, Alias<strip_all>, HelpText<"Alias for --strip-all">;
540 def: Flag<["-"], "S">, Alias<strip_debug>, HelpText<"Alias for --strip-debug">;
541 def: Flag<["-"], "t">, Alias<trace>, HelpText<"Alias for --trace">;
542 def: Joined<["-", "--"], "Ttext-segment=">, Alias<Ttext_segment>;
543 def: JoinedOrSeparate<["-"], "y">, Alias<trace_symbol>, HelpText<"Alias for --trace-symbol">;
544 def: JoinedOrSeparate<["-"], "u">, Alias<undefined>, HelpText<"Alias for --undefined">;
545 def: Flag<["-"], "V">, Alias<version>, HelpText<"Alias for --version">;
547 // LTO-related options.
548 def lto_aa_pipeline: JJ<"lto-aa-pipeline=">,
549 HelpText<"AA pipeline to run during LTO. Used in conjunction with -lto-newpm-passes">;
550 def lto_debug_pass_manager: FF<"lto-debug-pass-manager">,
551 HelpText<"Debug new pass manager">;
552 def lto_emit_asm: FF<"lto-emit-asm">,
553 HelpText<"Emit assembly code">;
554 def no_lto_legacy_pass_manager: FF<"no-lto-legacy-pass-manager">,
555 HelpText<"Use the new pass manager in LLVM">;
556 def lto_newpm_passes: JJ<"lto-newpm-passes=">,
557 HelpText<"Passes to run during LTO">;
558 def lto_O: JJ<"lto-O">, MetaVarName<"<opt-level>">,
559 HelpText<"Optimization level for LTO">;
560 def lto_partitions: JJ<"lto-partitions=">,
561 HelpText<"Number of LTO codegen partitions">;
562 def lto_cs_profile_generate: FF<"lto-cs-profile-generate">,
563 HelpText<"Perform context sensitive PGO instrumentation">;
564 def lto_cs_profile_file: JJ<"lto-cs-profile-file=">,
565 HelpText<"Context sensitive profile file path">;
566 defm lto_pgo_warn_mismatch: BB<"lto-pgo-warn-mismatch",
567 "turn on warnings about profile cfg mismatch (default)>",
568 "turn off warnings about profile cfg mismatch">;
569 def lto_obj_path_eq: JJ<"lto-obj-path=">;
570 def lto_sample_profile: JJ<"lto-sample-profile=">,
571 HelpText<"Sample profile file path">;
572 defm lto_whole_program_visibility: BB<"lto-whole-program-visibility",
573 "Asserts that the LTO link has whole program visibility",
574 "Asserts that the LTO link does not have whole program visibility">;
575 def disable_verify: F<"disable-verify">;
576 defm mllvm: Eq<"mllvm", "Additional arguments to forward to LLVM's option processing">;
577 def opt_remarks_filename: Separate<["--"], "opt-remarks-filename">,
578 HelpText<"YAML output file for optimization remarks">;
579 defm opt_remarks_hotness_threshold: EEq<"opt-remarks-hotness-threshold",
580 "Minimum profile count required for an optimization remark to be output."
581 " Use 'auto' to apply the threshold from profile summary.">,
582 MetaVarName<"<value>">;
583 def opt_remarks_passes: Separate<["--"], "opt-remarks-passes">,
584 HelpText<"Regex for the passes that need to be serialized to the output file">;
585 def opt_remarks_with_hotness: FF<"opt-remarks-with-hotness">,
586 HelpText<"Include hotness information in the optimization remarks file">;
587 def opt_remarks_format: Separate<["--"], "opt-remarks-format">,
588 HelpText<"The format used for serializing remarks (default: YAML)">;
589 def save_temps: F<"save-temps">, HelpText<"Save intermediate LTO compilation results">;
590 def save_temps_eq: JJ<"save-temps=">, HelpText<"Save select intermediate LTO compilation results">,
591 Values<"resolution,preopt,promote,internalize,import,opt,precodegen,prelink,combinedindex">;
592 def lto_basic_block_sections: JJ<"lto-basic-block-sections=">,
593 HelpText<"Enable basic block sections for LTO">;
594 defm lto_unique_basic_block_section_names: BB<"lto-unique-basic-block-section-names",
595 "Give unique names to every basic block section for LTO",
596 "Do not give unique names to every basic block section for LTO (default)">;
597 defm shuffle_sections: EEq<"shuffle-sections",
598 "Shuffle matched sections using the given seed before mapping them to the output sections. "
599 "If -1, reverse the section order. If 0, use a random seed">,
600 MetaVarName<"<section-glob>=<seed>">;
601 def thinlto_cache_dir: JJ<"thinlto-cache-dir=">,
602 HelpText<"Path to ThinLTO cached object file directory">;
603 defm thinlto_cache_policy: EEq<"thinlto-cache-policy", "Pruning policy for the ThinLTO cache">;
604 def thinlto_emit_imports_files: FF<"thinlto-emit-imports-files">;
605 def thinlto_emit_index_files: FF<"thinlto-emit-index-files">;
606 def thinlto_index_only: FF<"thinlto-index-only">;
607 def thinlto_index_only_eq: JJ<"thinlto-index-only=">;
608 def thinlto_jobs: JJ<"thinlto-jobs=">,
609 HelpText<"Number of ThinLTO jobs. Default to --threads=">;
610 def thinlto_object_suffix_replace_eq: JJ<"thinlto-object-suffix-replace=">;
611 def thinlto_prefix_replace_eq: JJ<"thinlto-prefix-replace=">;
612 def thinlto_single_module_eq: JJ<"thinlto-single-module=">,
613 HelpText<"Specific a single module to compile in ThinLTO mode, for debugging only">;
615 def: J<"plugin-opt=O">, Alias<lto_O>, HelpText<"Alias for --lto-O">;
616 def: F<"plugin-opt=debug-pass-manager">,
617 Alias<lto_debug_pass_manager>, HelpText<"Alias for --lto-debug-pass-manager">;
618 def: F<"plugin-opt=disable-verify">, Alias<disable_verify>, HelpText<"Alias for --disable-verify">;
619 def plugin_opt_dwo_dir_eq: J<"plugin-opt=dwo_dir=">,
620 HelpText<"Directory to store .dwo files when LTO and debug fission are used">;
621 def plugin_opt_emit_asm: F<"plugin-opt=emit-asm">,
622 Alias<lto_emit_asm>, HelpText<"Alias for --lto-emit-asm">;
623 def plugin_opt_emit_llvm: F<"plugin-opt=emit-llvm">;
624 def: J<"plugin-opt=jobs=">, Alias<thinlto_jobs>, HelpText<"Alias for --thinlto-jobs">;
625 def: J<"plugin-opt=lto-partitions=">, Alias<lto_partitions>, HelpText<"Alias for --lto-partitions">;
626 def plugin_opt_mcpu_eq: J<"plugin-opt=mcpu=">;
627 def: F<"plugin-opt=new-pass-manager">,
628 Alias<no_lto_legacy_pass_manager>, HelpText<"Alias for --no-lto-legacy-pass-manager">;
629 def: F<"plugin-opt=cs-profile-generate">,
630 Alias<lto_cs_profile_generate>, HelpText<"Alias for --lto-cs-profile-generate">;
631 def: J<"plugin-opt=cs-profile-path=">,
632 Alias<lto_cs_profile_file>, HelpText<"Alias for --lto-cs-profile-file">;
633 def: J<"plugin-opt=obj-path=">,
634 Alias<lto_obj_path_eq>,
635 HelpText<"Alias for --lto-obj-path=">;
636 def plugin_opt_opaque_pointers: F<"plugin-opt=opaque-pointers">,
637 HelpText<"Use opaque pointers in IR during LTO (default)">;
638 def plugin_opt_no_opaque_pointers: F<"plugin-opt=no-opaque-pointers">,
639 HelpText<"Use typed pointers in IR during LTO">;
640 def: J<"plugin-opt=opt-remarks-filename=">,
641 Alias<opt_remarks_filename>,
642 HelpText<"Alias for --opt-remarks-filename">;
643 def: J<"plugin-opt=opt-remarks-passes=">,
644 Alias<opt_remarks_passes>,
645 HelpText<"Alias for --opt-remarks-passes">;
646 def: J<"plugin-opt=opt-remarks-format=">,
647 Alias<opt_remarks_format>,
648 HelpText<"Alias for --opt-remarks-format">;
649 def: F<"plugin-opt=opt-remarks-with-hotness">,
650 Alias<opt_remarks_with_hotness>,
651 HelpText<"Alias for --opt-remarks-with_hotness">;
652 def: J<"plugin-opt=opt-remarks-hotness-threshold=">,
653 Alias<opt_remarks_hotness_threshold>,
654 HelpText<"Alias for --opt-remarks-hotness-threshold">;
655 def: J<"plugin-opt=sample-profile=">,
656 Alias<lto_sample_profile>, HelpText<"Alias for --lto-sample-profile">;
657 def: F<"plugin-opt=save-temps">, Alias<save_temps>, HelpText<"Alias for --save-temps">;
658 def plugin_opt_stats_file: J<"plugin-opt=stats-file=">,
659 HelpText<"Filename to write LTO statistics to">;
660 def: F<"plugin-opt=thinlto-emit-imports-files">,
661 Alias<thinlto_emit_imports_files>,
662 HelpText<"Alias for --thinlto-emit-imports-files">;
663 def: F<"plugin-opt=thinlto-index-only">,
664 Alias<thinlto_index_only>,
665 HelpText<"Alias for --thinlto-index-only">;
666 def: J<"plugin-opt=thinlto-index-only=">,
667 Alias<thinlto_index_only_eq>,
668 HelpText<"Alias for --thinlto-index-only=">;
669 def: J<"plugin-opt=thinlto-object-suffix-replace=">,
670 Alias<thinlto_object_suffix_replace_eq>,
671 HelpText<"Alias for --thinlto-object-suffix-replace=">;
672 def: J<"plugin-opt=thinlto-prefix-replace=">,
673 Alias<thinlto_prefix_replace_eq>,
674 HelpText<"Alias for --thinlto-prefix-replace=">;
676 // Ignore LTO plugin-related options.
677 // clang -flto passes -plugin and -plugin-opt to the linker. This is required
678 // for ld.gold and ld.bfd to get LTO working. But it's not for lld which doesn't
679 // rely on a plugin. Instead of detecting which linker is used on clang side we
680 // just ignore the option on lld side as it's easier. In fact, the linker could
681 // be called 'ld' and understanding which linker is used would require parsing of
683 defm plugin: Eq<"plugin", "Ignored for compatibility with GNU linkers">;
685 def plugin_opt_eq_minus: J<"plugin-opt=-">,
686 HelpText<"Specify an LLVM option for compatibility with LLVMgold.so">;
687 def: J<"plugin-opt=thinlto">;
689 // Ignore GCC collect2 LTO plugin related options. Note that we don't support
690 // GCC LTO, but GCC collect2 passes these options even in non-LTO mode.
691 def: J<"plugin-opt=-fresolution=">;
692 def: J<"plugin-opt=-pass-through=">;
693 // This may be either an unhandled LLVMgold.so feature or GCC passed
694 // -plugin-opt=path/to/{liblto_plugin.so,lto-wrapper}
695 def plugin_opt_eq : J<"plugin-opt=">;
697 // Options listed below are silently ignored for now for compatibility.
698 def: F<"detect-odr-violations">;
699 def: Flag<["-"], "d">;
700 def: Flag<["-"], "g">;
702 def: FF<"no-add-needed">;
703 def: F<"no-copy-dt-needed-entries">;
704 def: F<"no-ctors-in-init-array">;
705 def: F<"no-keep-memory">;
706 def: F<"no-warn-mismatch">;
707 def: Separate<["--", "-"], "rpath-link">;
708 def: J<"rpath-link=">;
709 def: F<"secure-plt">;
710 def: F<"sort-common">;
712 def: F<"warn-execstack">;
714 def: F<"warn-shared-textrel">;
715 def: JoinedOrSeparate<["-"], "G">;
717 // Hidden option used for testing MIPS multi-GOT implementation.
719 Eq<"mips-got-size", "Max size of a single MIPS GOT. 0x10000 by default.">,
722 // Hidden option used to opt-in to additional output checks.
723 defm check_dynamic_relocations: BB<"check-dynamic-relocations",
724 "Perform additional validation of the written dynamic relocations",
725 "Do not perform additional validation of the written dynamic relocations">,
728 defm load_pass_plugins: EEq<"load-pass-plugin", "Load passes from plugin library">;
730 // Hidden options, used by clang's -fsanitize=memtag-* options to emit an ELF
731 // note to designate what kinds of memory (stack/heap) should be protected using
732 // ARM's MTE on armv8.5+. A binary's desire for stack MTE can't be obtained
733 // implicitly, so we have a specific bit in the note to signal to the loader to
734 // remap the stack as PROT_MTE.
735 defm android_memtag_stack: BB<"android-memtag-stack",
736 "Instruct the dynamic loader to prepare for MTE stack instrumentation", "">;
737 defm android_memtag_heap: BB<"android-memtag-heap",
738 "Instruct the dynamic loader to enable MTE protection for the heap", "">;
739 defm android_memtag_mode: EEq<"android-memtag-mode",
740 "Instruct the dynamic loader to start under MTE mode {async, sync, none}">;