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llvm-project/lld/ELF/Options.td

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[ELF2] Add a new ELF linker based on the new PE/COFF linker. Differential Revision: http://reviews.llvm.org/D11188 llvm-svn: 243161
2015-07-25 05:03:07 +08:00
include "llvm/Option/OptParser.td"
Allow both one and two dashes for all multi-letter options. GNU ld's manual page says that all options whose names are multiple letters, except those who start with "o", can start either with one or two dashes. llvm-svn: 273218
2016-06-21 07:10:40 +08:00
// For options whose names are multiple letters, either one dash or
// two can precede the option name except those that start with 'o'.
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
class F<string name>: Flag<["--", "-"], name>;
class J<string name>: Joined<["--", "-"], name>;
class S<string name>: Separate<["--", "-"], name>;
[ELF2] Add support for -Bsymbolic. llvm-svn: 250225
2015-10-14 05:02:34 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
multiclass Eq<string name> {
def "": Separate<["--", "-"], name>;
def _eq: Joined<["--", "-"], name # "=">, Alias<!cast<Separate>(NAME)>;
}
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
multiclass B<string name, string help1, string help2> {
def NAME: Flag<["--", "-"], name>, HelpText<help1>;
def no_ # NAME: Flag<["--", "-"], "no-" # name>, HelpText<help2>;
}
[ELF] - Fix for: bug 30237 - lld does not implement -f option FreeBSD's libstdc++ build (used on tier-2 architectures) uses GNU ld's -f <name> option, which sets the DT_AUXILIARY field to the specified name. Multiple -f options may be specified and the DT_AUXILIARY entries will be added in the order in which they appear. Patch implements that option. Differential revision: https://reviews.llvm.org/D24139 llvm-svn: 280475
2016-09-02 17:13:05 +08:00
def auxiliary: S<"auxiliary">, HelpText<"Set DT_AUXILIARY field to the specified name">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def Bsymbolic: F<"Bsymbolic">, HelpText<"Bind defined symbols locally">;
ELF: Implement --build-id. This patch implements --build-id. After the linker creates an output file in the memory buffer, it computes the FNV1 hash of the resulting file and set the hash to the .note section as a build-id. GNU ld and gold have the same feature, but their default choice of the hash function is different. Their default is SHA1. We made a deliberate choice to not use a secure hash function for the sake of performance. Computing a secure hash is slow -- for example, MD5 throughput is usually 400 MB/s or so. SHA1 is slower than that. As a result, if you pass --build-id to gold, then the linker becomes about 10% slower than that without the option. We observed a similar degradation in an experimental implementation of build-id for LLD. On the other hand, we observed only 1-2% performance degradation with the FNV hash. Since build-id is not for digital certificate or anything, we think that a very small probability of collision is acceptable. We considered using other signals such as using input file timestamps as inputs to a secure hash function. But such signals would have an issue with build reproducibility (if you build a binary from the same source tree using the same toolchain, the build id should become the same.) GNU linkers accepts --build-id=<style> option where style is one of "MD5", "SHA1", or an arbitrary hex string. That option is out of scope of this patch. http://reviews.llvm.org/D18091 llvm-svn: 263292
2016-03-12 04:51:53 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def Bsymbolic_functions: F<"Bsymbolic-functions">,
HelpText<"Bind defined function symbols locally">;
ELF: Implement --build-id=md5. Previously, we supported only one hash function, FNV-1, so BuildIdSection directly handled hash computation. In this patch, I made BuildIdSection an abstract class and defined two subclasses, BuildIdFnv1 and BuildIdMd5. llvm-svn: 265737
2016-04-08 06:49:21 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def Bdynamic: F<"Bdynamic">, HelpText<"Link against shared libraries">;
def Bstatic: F<"Bstatic">, HelpText<"Do not link against shared libraries">;
def build_id: F<"build-id">, HelpText<"Generate build ID note">;
def build_id_eq: J<"build-id=">, HelpText<"Generate build ID note">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm compress_debug_sections : Eq<"compress-debug-sections">,
[ELF] - Implemented --compress-debug-sections option. Patch implements --compress-debug-sections=zlib. In compare with D20211 (a year old patch, abandoned), it implementation uses streaming and fully reimplemented, does not support zlib-gnu for simplification. This is PR32308. Differential revision: https://reviews.llvm.org/D31941 llvm-svn: 300444
2017-04-17 16:58:12 +08:00
HelpText<"Compress DWARF debug sections">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm defsym: Eq<"defsym">, HelpText<"Define a symbol alias">;
[ELF] - Implemented --defsym option. gnu ld description of option is: --defsym=symbol=expression Create a global symbol in the output file, containing the absolute address given by expression. You may use this option as many times as necessary to define multiple symbols in the command line. A limited form of arithmetic is supported for the expression in this context: you may give a hexadecimal constant or the name of an existing symbol, or use "+" and "-" to add or subtract hexadecimal constants or symbols. If you need more elaborate expressions, consider using the linker command language from a script. Note: there should be no white space between symbol, the equals sign ("="), and expression. In compare with D32082, this patch does not support math expressions and absolute symbols. It implemented via code similar to --wrap. That covers 1 of 3 possible --defsym cases. Differential revision: https://reviews.llvm.org/D32171 llvm-svn: 301391
2017-04-26 18:40:02 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm library_path: Eq<"library-path">,
HelpText<"Add a directory to the library search path">, MetaVarName<"<dir>">;
Start adding support for creating shared libraries. They are not fully functional yet, but this implements enough support for lld itself to read them. With that, delete the .so binary we were using for tests and start eating our own dog food. llvm-svn: 247487
2015-09-12 06:42:45 +08:00
Allow not only -O<number> but also -O <number>. Fixes https://bugs.llvm.org/show_bug.cgi?id=34311 llvm-svn: 311682
2017-08-25 02:34:44 +08:00
def O: JoinedOrSeparate<["-"], "O">, HelpText<"Optimize output file size">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm Tbss: Eq<"Tbss">,
HelpText<"Same as --section-start with .bss as the sectionname">;
[ELF] - Implemented --section-start, -Ttext, -Tdata, -Tbss options. --section-start=sectionname=org Locate a section in the output file at the absolute address given by org. You may use this option as many times as necessary to locate multiple sections in the command line. org must be a single hexadecimal integer; for compatibility with other linkers, you may omit the leading `0x' usually associated with hexadecimal values. Note: there should be no white space between sectionname, the equals sign (“<=>”), and org. -Tbss=org -Tdata=org -Ttext=org Same as --section-start, with .bss, .data or .text as the sectionname. Differential revision: https://reviews.llvm.org/D24294 llvm-svn: 281458
2016-09-14 21:07:13 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm Tdata: Eq<"Tdata">,
HelpText<"Same as --section-start with .data as the sectionname">;
[ELF] - Implemented --section-start, -Ttext, -Tdata, -Tbss options. --section-start=sectionname=org Locate a section in the output file at the absolute address given by org. You may use this option as many times as necessary to locate multiple sections in the command line. org must be a single hexadecimal integer; for compatibility with other linkers, you may omit the leading `0x' usually associated with hexadecimal values. Note: there should be no white space between sectionname, the equals sign (“<=>”), and org. -Tbss=org -Tdata=org -Ttext=org Same as --section-start, with .bss, .data or .text as the sectionname. Differential revision: https://reviews.llvm.org/D24294 llvm-svn: 281458
2016-09-14 21:07:13 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm Ttext: Eq<"Ttext">,
HelpText<"Same as --section-start with .text as the sectionname">;
[ELF] - Implemented --section-start, -Ttext, -Tdata, -Tbss options. --section-start=sectionname=org Locate a section in the output file at the absolute address given by org. You may use this option as many times as necessary to locate multiple sections in the command line. org must be a single hexadecimal integer; for compatibility with other linkers, you may omit the leading `0x' usually associated with hexadecimal values. Note: there should be no white space between sectionname, the equals sign (“<=>”), and org. -Tbss=org -Tdata=org -Ttext=org Same as --section-start, with .bss, .data or .text as the sectionname. Differential revision: https://reviews.llvm.org/D24294 llvm-svn: 281458
2016-09-14 21:07:13 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def allow_multiple_definition: F<"allow-multiple-definition">,
HelpText<"Allow multiple definitions">;
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm as_needed: B<"as-needed",
"Only set DT_NEEDED for shared libraries if used",
"Always set DT_NEEDED for shared libraries">;
Parse and store the value of the -O option. llvm-svn: 251136
2015-10-24 03:02:19 +08:00
Add the --chroot option for --reproduce. Summary: If the linker is invoked with `--chroot /foo` and `/bar/baz.o`, it tries to read the file from `/foo/bar/baz.o`. This feature is useful when you are dealing with files created by the --reproduce option. Reviewers: grimar Subscribers: llvm-commits, emaste Differential Revision: https://reviews.llvm.org/D35517 llvm-svn: 308646
2017-07-21 02:17:55 +08:00
// -chroot doesn't have a help text because it is an internal option.
def chroot: S<"chroot">;
Make -color-diagnostics an alias to -color-diagnostics=always. Previously, that was an alias to -color-diagnostics=auto. However, Clang's -fcolor-diagnostics is an alias to -fcolor-diagnostics=always, so that was confusing. This patch fixes that issue. llvm-svn: 290332
2016-12-22 16:20:28 +08:00
def color_diagnostics: F<"color-diagnostics">,
HelpText<"Use colors in diagnostics">;
def color_diagnostics_eq: J<"color-diagnostics=">,
Support -color-diagnostics={auto,always,never}. -color-diagnostics=auto is default because that's the same as Clang's default. When color is enabled, error or warning messages are colored like this. error: <bold>ld.lld</bold> <red>error:</red> foo.o: no such file warning: <bold>ld.lld</bold> <magenta>warning:</magenta> foo.o: no such file Differential Revision: https://reviews.llvm.org/D27117 llvm-svn: 287949
2016-11-26 04:27:32 +08:00
HelpText<"Use colors in diagnostics">;
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm define_common: B<"define-common",
"Assign space to common symbols",
"Do not assign space to common symbols">;
Do not allocate space for common symbols with -r Currently ld.lld -r allocates space for common symbols, whereas ld.bfd -r doesn't. As a result the OpenBSD makefile bits for creating libraries fail as they use ld -X -r to strip local symbols, which results in duplicate symbol errors because space for the common symbols has been allocated. The diff also implements the --define-commons option such that allocation of commons can be forced even if -r is used. Patch by Mark Kettenis. llvm-svn: 292878
2017-01-24 11:41:20 +08:00
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm demangle: B<"demangle",
"Demangle symbol names",
"Do not demangle symbol names">;
Move a flag definition to the right place as -demangle is not ignored. llvm-svn: 292049
2017-01-15 11:45:46 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def disable_new_dtags: F<"disable-new-dtags">,
HelpText<"Disable new dynamic tags">;
Implement --export-dynamic. llvm-svn: 248347
2015-09-23 07:38:23 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def discard_all: F<"discard-all">, HelpText<"Delete all local symbols">;
def discard_locals: F<"discard-locals">,
HelpText<"Delete temporary local symbols">;
def discard_none: F<"discard-none">,
HelpText<"Keep all symbols in the symbol table">;
def dynamic_linker: S<"dynamic-linker">,
ELF2: Tidy up Options.td. Fix indentation and sort options alphabetically. llvm-svn: 248969
2015-10-01 08:33:02 +08:00
HelpText<"Which dynamic linker to use">;
Implement --noinhibit-exec. Patch by George Rimar! llvm-svn: 248605
2015-09-26 03:24:57 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm dynamic_list: Eq<"dynamic-list">,
ELF: Implement --dynamic-list This patch implements the --dynamic-list option, which adds a list of global symbol that either should not be bounded by default definition when creating shared libraries, or add in dynamic symbol table in the case of creating executables. The patch modifies the ScriptParserBase class to use a list of Token instead of StringRef, which contains information if the token is a quoted or unquoted strings. It is used to use a faster search for exact match symbol name. The input file follow a similar format of linker script with some simplifications (it does not have scope or node names). It leads to a simplified parser define in DynamicList.{cpp,h}. Different from ld/gold neither glob pattern nor mangled names (extern 'C++') are currently supported. llvm-svn: 266227
2016-04-14 02:51:11 +08:00
HelpText<"Read a list of dynamic symbols">;
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm eh_frame_hdr: B<"eh-frame-hdr",
"Request creation of .eh_frame_hdr section and PT_GNU_EH_FRAME segment header",
"Do not create .eh_frame_hdr section">;
ELF: Implement --start-lib and --end-lib start-lib and end-lib are options to link object files in the same semantics as archive files. If an object is in start-lib and end-lib, the object is linked only when the file is needed to resolve undefined symbols. That means, if an object is in start-lib and end-lib, it behaves as if it were in an archive file. In this patch, I introduced a new notion, LazyObjectFile. That is analogous to Archive file type, but that works for a single object file instead of for an archive file. http://reviews.llvm.org/D18814 llvm-svn: 265710
2016-04-08 03:24:51 +08:00
Recommit r294464 "[ELF] - Added partial support for --emit-relocs (no --gc-section case, no /DISCARD/ support) #3" with temporarily file name fix in testcase. Original commit message: -q, --emit-relocs - Generate relocations in output Simplest implementation: * no GC case, * no "/DISCARD/" linkerscript command support. This patch is extracted from D28612 / D29636, Relative to PR31579. Differential revision: https://reviews.llvm.org/D29663 llvm-svn: 294469
2017-02-09 00:18:10 +08:00
def emit_relocs: F<"emit-relocs">, HelpText<"Generate relocations in output">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def enable_new_dtags: F<"enable-new-dtags">,
HelpText<"Enable new dynamic tags">;
def end_lib: F<"end-lib">,
HelpText<"End a grouping of objects that should be treated as if they were together in an archive">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm entry: Eq<"entry">, HelpText<"Name of entry point symbol">,
MetaVarName<"<entry>">;
[ELF2] Add support for -discard-none. Differential Revision: http://reviews.llvm.org/D13083 llvm-svn: 248499
2015-09-24 23:08:23 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm error_limit: Eq<"error-limit">,
Limit default maximum number of errors to 20. This is in the context of https://llvm.org/bugs/show_bug.cgi?id=31109. When LLD prints out errors for relocations, it tends to print out extremely large number of errors (like millions) because it would print out one error per relocation. This patch makes LLD bail out if it prints out more than 20 errors. You can configure the limitation using -error-limit argument. -error-limit=0 means no limit. I chose the flag name because Clang has the same feature as -ferror-limit. "f" doesn't make sense to us, so I omitted it. Differential Revision: https://reviews.llvm.org/D26981 llvm-svn: 287789
2016-11-24 02:15:37 +08:00
HelpText<"Maximum number of errors to emit before stopping (0 = no limit)">;
Fix varaible names that correspond to command line options. llvm-svn: 298632
2017-03-24 02:16:42 +08:00
def error_unresolved_symbols: F<"error-unresolved-symbols">,
[ELF] Add warn-unresolved-symbols/error-unresolved-symbols options Patch by Dmitry Mikulin. PR: 31735 Differential Revision: https://reviews.llvm.org/D29150 llvm-svn: 293139
2017-01-26 10:19:20 +08:00
HelpText<"Report unresolved symbols as errors">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm exclude_libs: Eq<"exclude-libs">,
Implement the --exclude-libs option. The --exclude-libs option is not a popular option, but at least some programs in Android depend on it, so it's worth to support it. Differential Revision: https://reviews.llvm.org/D34422 llvm-svn: 305920
2017-06-21 23:36:24 +08:00
HelpText<"Exclude static libraries from automatic export">;
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm export_dynamic: B<"export-dynamic",
"Put symbols in the dynamic symbol table",
"Do not put symbols in the dynamic symbol table">;
Add support for -L and -l command line switches. Patch by Igor Kudrin! llvm-svn: 248708
2015-09-28 20:52:21 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm export_dynamic_symbol: Eq<"export-dynamic-symbol">,
ELF: Implement --export-dynamic-symbol. llvm-svn: 267184
2016-04-23 02:44:06 +08:00
HelpText<"Put a symbol in the dynamic symbol table">;
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm fatal_warnings: B<"fatal-warnings",
"Treat warnings as errors",
"Do not treat warnings as errors">;
[ELF] - Implemented --fatal-warnings option. --fatal-warnings: Treat warnings as errors DIfferential revision: http://reviews.llvm.org/D21969 llvm-svn: 274504
2016-07-04 21:43:12 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm filter: Eq<"filter">,
HelpText<"Set DT_FILTER field to the specified name">;
[ELF] - Implement filter library support (-F / --filter) This is PR33766. -F name --filter=name When creating an ELF shared object, set the internal DT_FILTER field to the specified name. This tells the dynamic linker that the symbol table of the shared object which is being created should be used as a filter on the symbol table of the shared object name. If you later link a program against this filter object, then, when you run the program, the dynamic linker will see the DT_FILTER field. The dynamic linker will resolve symbols according to the symbol table of the filter object as usual, but it will actually link to the definitions found in the shared object name. Thus the filter object can be used to select a subset of the symbols provided by the object name. (https://linux.die.net/man/1/ld). Shared Objects as Filters: https://docs.oracle.com/cd/E19683-01/817-3677/chapter4-31738/index.html Differential revision: https://reviews.llvm.org/D35352 llvm-svn: 308167
2017-07-17 17:43:18 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm fini: Eq<"fini">,
HelpText<"Specify a finalizer function">, MetaVarName<"<symbol>">;
[ELF2] Add DT_INIT and DT_FINI dynamic table entries The entries are added if there are "_init" or "_fini" entries in the symbol table respectively. According to the behavior of ld, entries are inserted even for undefined symbols. Symbol names can be overridden by using -init and -fini command line switches. If used, these switches neither add new symbol table entries nor require those symbols to be resolved. Differential Revision: http://reviews.llvm.org/D13385 llvm-svn: 249297
2015-10-05 18:29:46 +08:00
[ELF] Implement scanner for Cortex-A53 Erratum 843419 Add a new file AArch64ErrataFix.cpp that implements the logic to scan for the Cortex-A53 Erratum 843419. This involves finding all the executable code, disassembling the instructions that might trigger the erratum and reporting a message if the sequence is detected. At this stage we do not attempt to fix the erratum, this functionality will be added in a later patch. See D36749 for proposal. Differential Revision: https://reviews.llvm.org/D36742 llvm-svn: 319780
2017-12-05 23:59:05 +08:00
def fix_cortex_a53_843419: F<"fix-cortex-a53-843419">,
HelpText<"Apply fixes for AArch64 Cortex-A53 erratum 843419">;
Call _exit. As the state of lld gets more complicated, shutting down gets more expensive. In a normal lld run we can just call _exit immediately after renaming the temporary output file. We still want the ability to run a full shutdown since that is useful for detecting memory leaks. This patch adds a --full-shutdown flag and changes lit to use it. llvm-svn: 285224
2016-10-27 02:59:00 +08:00
def full_shutdown : F<"full-shutdown">,
HelpText<"Perform a full shutdown instead of calling _exit">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm format: Eq<"format">,
HelpText<"Change the input format of the inputs following this option">,
MetaVarName<"<input-format>">;
[ELF] Add support for -b binary Implemented by building an ELF file in memory. elf, default, and binary match gold behavior. Differential Revision: https://reviews.llvm.org/D24060 llvm-svn: 281108
2016-09-10 06:08:04 +08:00
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm gc_sections: B<"gc-sections",
"Enable garbage collection of unused sections",
"Disable garbage collection of unused sections">;
[ELF] - Sort command line options. NFC. llvm-svn: 280803
2016-09-07 19:43:18 +08:00
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm gdb_index: B<"gdb-index",
"Generate .gdb_index section",
"Do not generate .gdb_index section">;
[ELF] - Partial support of --gdb-index command line option (Part 1). In this patch partial gdb_index section is created. For costructing the .gdb_index section 6 steps should be performed (details are in SplitDebugInfo.cpp file header), this patch do first 3: Creates proper section header. Fills list of compilation units. Types CU list area is not supposed to be supported, so it is ignored and therefore can be treated as implemented either. Differential revision: https://reviews.llvm.org/D24706 llvm-svn: 284708
2016-10-20 17:19:48 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm hash_style: Eq<"hash-style">,
[ELF2] Add support for GNU Hash section This patch implements --hash-style command line switch. * By default, or with "sysv" or "both" parameters, the linker generates a standard ELF hash section. * With "gnu" or "both", it produces a GNU-style hash section. That section requires the symbols in the dynamic symbol table section, which are referenced in the GNU hash section, to be placed after not hashed ones and to be sorted to correspond the order of hash buckets in the GNU Hash section. The division function, as well as estimations for the section's parameters, are just the first rough attempt and the subjects for further adjustments. Differential Revision: http://reviews.llvm.org/D13815 llvm-svn: 251000
2015-10-22 16:21:35 +08:00
HelpText<"Specify hash style (sysv, gnu or both)">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def help: F<"help">, HelpText<"Print option help">;
Add --icf=none option. --icf=none negates --icf=all. llvm-svn: 310526
2017-08-10 05:32:38 +08:00
def icf_all: F<"icf=all">, HelpText<"Enable identical code folding">;
def icf_none: F<"icf=none">, HelpText<"Disable identical code folding">;
ELF2: Implement --gc-sections. Section garbage collection is a feature to remove unused sections from outputs. Unused sections are sections that cannot be reachable from known GC-root symbols or sections. Naturally the feature is implemented as a mark-sweep garbage collector. In this patch, I added Live bit to InputSectionBase. If and only if Live bit is on, the section will be written to the output. Starting from GC-root symbols or sections, a new function, markLive(), visits all reachable sections and sets their Live bits. Writer then ignores sections whose Live bit is off, so that such sections are excluded from the output. This change has small negative impact on performance if you use the feature because making sections means more work. The time to link Clang changes from 0.356s to 0.386s, or +8%. It reduces Clang size from 57,764,984 bytes to 55,296,600 bytes. That is 4.3% reduction. http://reviews.llvm.org/D13950 llvm-svn: 251043
2015-10-23 02:49:53 +08:00
Rename --icf-data and add a corresponding flag for functions. When we have --icf=safe we should be able to define --icf=all as a shorthand for --icf=safe --ignore-function-address-equality. For now --ignore-function-address-equality is used only to control access to non preemptable symbols in shared libraries. llvm-svn: 322152
2018-01-10 09:37:36 +08:00
def ignore_function_address_equality: F<"ignore-function-address-equality">,
HelpText<"lld can break the address equality of functions">;
def ignore_data_address_equality: F<"ignore-data-address-equality">,
HelpText<"lld can break the address equality of data">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm image_base : Eq<"image-base">, HelpText<"Set the base address">;
[ELF] Support for setting the base address The -image-base option allows for overriding the base address. Differential Revision: http://reviews.llvm.org/D22116 llvm-svn: 275206
2016-07-13 03:37:53 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm init: Eq<"init">, HelpText<"Specify an initializer function">,
MetaVarName<"<symbol>">;
[ELF2] Add DT_INIT and DT_FINI dynamic table entries The entries are added if there are "_init" or "_fini" entries in the symbol table respectively. According to the behavior of ld, entries are inserted even for undefined symbols. Symbol names can be overridden by using -init and -fini command line switches. If used, these switches neither add new symbol table entries nor require those symbols to be resolved. Differential Revision: http://reviews.llvm.org/D13385 llvm-svn: 249297
2015-10-05 18:29:46 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm library: Eq<"library">, HelpText<"Root name of library to use">,
MetaVarName<"<libName>">;
Implement --allow-multiple-definition. Patch by George Rimar! llvm-svn: 248733
2015-09-29 04:30:11 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def lto_O: J<"lto-O">, MetaVarName<"<opt-level>">,
ELF: Add flag for controlling LTO optimization level. Differential Revision: http://reviews.llvm.org/D18667 llvm-svn: 265053
2016-04-01 05:00:27 +08:00
HelpText<"Optimization level for LTO">;
Do not allow "--" with single-letter options. In general, we accept both -foo and --foo as command line options, but if an option is a single letter option, we don't want to allow double dashes because GNU linkers don't accept such combination. llvm-svn: 274219
2016-06-30 16:43:23 +08:00
def m: JoinedOrSeparate<["-"], "m">, HelpText<"Set target emulation">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm Map: Eq<"Map">, HelpText<"Print a link map to the specified file">;
Implement -Map. The format is not exactly the same as the one in bfd since bfd always follows a linker script and prints it along. llvm-svn: 291958
2017-01-14 05:05:46 +08:00
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm merge_exidx_entries: B<"merge-exidx-entries",
"Enable merging .ARM.exidx entries",
"Disable merging .ARM.exidx entries">;
[ELF] Remove Duplicate .ARM.exidx sections The ARM.exidx section contains a table of 8-byte entries with the first word of each entry an offset to the function it describes and the second word instructions for unwinding if an exception is thrown from that function. The SHF_LINK_ORDER processing will order the table in ascending order of the functions described by the exception table entries. As the address range of an exception table entry is terminated by the next table entry, it is possible to merge consecutive table entries that have identical unwind instructions. For this implementation we define a table entry to be identical if: - Both entries are the special EXIDX_CANTUNWIND. - Both entries have the same inline unwind instructions. We do not attempt to establish if table entries that are references to .ARM.extab sections are identical. This implementation works at a granularity of a single .ARM.exidx InputSection. If all entries in the InputSection are identical to the previous table entry we can remove the InputSection. A more sophisticated but more complex implementation would rewrite InputSection contents so that duplicates within a .ARM.exidx InputSection can be merged. Differential Revision: https://reviews.llvm.org/D40967 llvm-svn: 320803
2017-12-15 19:09:41 +08:00
Add -nostdlib. llvm-svn: 280528
2016-09-03 03:20:33 +08:00
def nostdlib: F<"nostdlib">,
HelpText<"Only search directories specified on the command line">;
Support -color-diagnostics={auto,always,never}. -color-diagnostics=auto is default because that's the same as Clang's default. When color is enabled, error or warning messages are colored like this. error: <bold>ld.lld</bold> <red>error:</red> foo.o: no such file warning: <bold>ld.lld</bold> <magenta>warning:</magenta> foo.o: no such file Differential Revision: https://reviews.llvm.org/D27117 llvm-svn: 287949
2016-11-26 04:27:32 +08:00
def no_color_diagnostics: F<"no-color-diagnostics">,
HelpText<"Do not use colors in diagnostics">;
[ELF] - Implemented --no-dynamic-linker option Feature is used for producing static-linked PIE executables (https://gcc.gnu.org/ml/gcc/2015-06/msg00008.html) And was implemented in GNU ld https://gcc.gnu.org/ml/gcc/2015-08/msg00099.html I also found it in linux kernel build system, though I think that x86/x64 bootloader does not really rely on it. Seems it used for PPC though. Differential revision: https://reviews.llvm.org/D30258 llvm-svn: 296097
2017-02-24 16:26:18 +08:00
def no_dynamic_linker: F<"no-dynamic-linker">,
HelpText<"Inhibit output of .interp section">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def no_gnu_unique: F<"no-gnu-unique">,
HelpText<"Disable STB_GNU_UNIQUE symbol binding">;
def noinhibit_exec: F<"noinhibit-exec">,
HelpText<"Retain the executable output file whenever it is still usable">;
[ELF2] Handle -m option Parse and apply emulation given with -m option. Check input files to match ELF type and machine architecture provided with -m. Differential Revision: http://reviews.llvm.org/D13055 llvm-svn: 249529
2015-10-07 17:13:03 +08:00
Add --no-omagic and --no-print-gc-sections. llvm-svn: 317068
2017-11-01 10:04:43 +08:00
def no_omagic: Flag<["--"], "no-omagic">, MetaVarName<"<magic>">,
HelpText<"Do not set the text data sections to be writable">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
def no_rosegment: F<"no-rosegment">,
HelpText<"Do not put read-only non-executable sections in their own segment">;
[ELF] - Implemented -no-rosegment. --no-rosegment: Do not put read-only non-executable sections in their own segment Differential revision: https://reviews.llvm.org/D26889 llvm-svn: 288020
2016-11-28 18:05:20 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def no_undefined: F<"no-undefined">,
HelpText<"Report unresolved symbols even if the linker is creating a shared library">;
[ELF2] Implement --no-undefined flag. llvm-svn: 249064
2015-10-02 04:14:45 +08:00
[ELF] - Implemented --no-undefined-version flag Option checks for cases where a version script explicitly lists a symbol, but the symbol is not defined and errors out such cases if any. Differential revision: http://reviews.llvm.org/D21745 llvm-svn: 273998
2016-06-28 16:07:26 +08:00
def no_undefined_version: F<"no-undefined-version">,
HelpText<"Report version scripts that refer undefined symbols">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def o: JoinedOrSeparate<["-"], "o">, MetaVarName<"<path>">,
ELF2: Tidy up Options.td. Fix indentation and sort options alphabetically. llvm-svn: 248969
2015-10-01 08:33:02 +08:00
HelpText<"Path to file to write output">;
Add support for -L and -l command line switches. Patch by Igor Kudrin! llvm-svn: 248708
2015-09-28 20:52:21 +08:00
[ELF] - Implemented --oformat binary option. -oformat output-format `-oformat' option can be used to specify the binary format for the output object file. Patch implements binary format output type. Differential revision: https://reviews.llvm.org/D23769 llvm-svn: 279726
2016-08-25 17:05:47 +08:00
def oformat: Separate<["--"], "oformat">, MetaVarName<"<format>">,
HelpText<"Specify the binary format for the output object file">;
Removed trailing whitespace. NFC. llvm-svn: 279729
2016-08-25 18:39:04 +08:00
Options such as -omagic or -opt-remarks-* should be interpreted as -o. Options can start with `-` or `--` unless they start with "o". Any option that starts with `-o` should be interpreted as an output file name. This is a quote from the GNU ld man page. Note -- there is one exception to this rule. Multiple letter options that start with a lower case 'o' can only be preceded by two dashes. This is to reduce confusion with the -o option. So for example -omagic sets the output file name to magic whereas --omagic sets the NMAGIC flag on the output. We didn't handle that properly before. llvm-svn: 297508
2017-03-11 05:22:28 +08:00
def omagic: Flag<["--"], "omagic">, MetaVarName<"<magic>">,
[ELF] - Implemented -N (-omagic) command line option. -N (-omagic) Set the text and data sections to be readable and writable. Also, do not page-align the data segment. Differential revision: https://reviews.llvm.org/D26888 llvm-svn: 288123
2016-11-29 17:43:51 +08:00
HelpText<"Set the text and data sections to be readable and writable">;
Remove trailing whitespace. llvm-svn: 320520
2017-12-13 04:00:30 +08:00
defm orphan_handling: Eq<"orphan-handling">,
[ELF] - Implement --orphan-handling option. It is PR34946. Spec (http://man7.org/linux/man-pages/man1/ld.1.html) tells about --orphan-handling=MODE, option where MODE can be one of four: "place", "discard", "warn", "error". Currently we already report orphans when -verbose given, what becomes excessive with option implemented. Patch stops reporting orphans when -versbose is given, and support "place", "warn" and "error" modes. It is not yet clear that "discard" mode is useful so it is not supported. Differential revision: https://reviews.llvm.org/D39000 llvm-svn: 316583
2017-10-25 23:20:30 +08:00
HelpText<"Control how orphan sections are handled when linker script used">;
ELF: Add support for emitting dynamic relocations in the Android relocation packing format. The Android relocation packing format is a more compact format for dynamic relocations in executables and DSOs that is based on delta encoding and SLEBs. An overview of the format can be found in the Android source code: https://android.googlesource.com/platform/bionic/+/refs/heads/master/tools/relocation_packer/src/delta_encoder.h This patch implements relocation packing using that format. This implementation uses a more intelligent algorithm for compressing relative relocations than Android's own relocation packer. As a result it can generally create smaller relocation sections than that packer. If I link Chromium for Android targeting ARM32 I get a .rel.dyn of size 174693 bytes, as compared to 371832 bytes with gold and the Android packer. Differential Revision: https://reviews.llvm.org/D39152 llvm-svn: 316775
2017-10-28 01:49:40 +08:00
def pack_dyn_relocs_eq: J<"pack-dyn-relocs=">, MetaVarName<"<format>">,
HelpText<"Pack dynamic relocations in the given format (none or android)">;
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm pie: B<"pie",
"Create a position independent executable",
"Do not create a position independent executable">;
[ELF] - Implemented --print-gc-sections command line argument. List all sections removed by garbage collection. This option is only effective if garbage collection has been enabled via the `--gc-sections' option. Differential revision: http://reviews.llvm.org/D15327 llvm-svn: 255235
2015-12-10 17:12:18 +08:00
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm print_gc_sections: B<"print-gc-sections",
"List removed unused sections",
"Do not list removed unused sections">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm print_icf_sections: B<"print-icf-sections",
"List identical folded sections",
"Do not list identical folded sections">;
[ELF] Add --print-icf-sections flag Currently ICF information is output through stderr if the "--verbose" flag is used. This differs to Gold for example, which uses an explicit flag to output this to stdout. This commit adds the "--print-icf-sections" and "--no-print-icf-sections" flags and changes the output message format for clarity and consistency with "--print-gc-sections". These messages are still output to stderr if using the verbose flag. However to avoid intermingled message output to console, this will not occur when the "--print-icf-sections" flag is used. Existing tests have been modified to expect the new message format from stderr. Patch by Owen Reynolds. Differential Revision: https://reviews.llvm.org/D42375 Reviewers: ruiu, rafael Reviewed by: llvm-svn: 323976
2018-02-02 00:00:46 +08:00
Add -print-map and -M options. llvm-svn: 292046
2017-01-15 10:52:34 +08:00
def print_map: F<"print-map">,
HelpText<"Print a link map to the standard output">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm reproduce: Eq<"reproduce">,
[ELF] Introduce --reproduce flag. --reproduce dumps the object files in a directory chosen (preserving the file system layout) and the linker invocation so that people can create an archive and upload for debugging. Differential Revision: http://reviews.llvm.org/D19494 llvm-svn: 267497
2016-04-26 08:22:24 +08:00
HelpText<"Dump linker invocation and input files for debugging">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm rpath: Eq<"rpath">, HelpText<"Add a DT_RUNPATH to the output">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def relocatable: F<"relocatable">, HelpText<"Create relocatable object file">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm retain_symbols_file: Eq<"retain-symbols-file">,
HelpText<"Retain only the symbols listed in the file">,
MetaVarName<"<file>">;
[ELF] - Implemented --retain-symbols-file option --retain-symbols-file=filename Retain only the symbols listed in the file filename, discarding all others. filename is simply a flat file, with one symbol name per line. This option is especially useful in environments (such as VxWorks) where a large global symbol table is accumulated gradually, to conserve run-time memory. Note: though documentation says "--retain-symbols-file does not discard undefined symbols, or symbols needed for relocations.", both bfd and gold do that, and this patch too, like testcase show. Differential revision: https://reviews.llvm.org/D27716 llvm-svn: 290122
2016-12-20 02:00:52 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm script: Eq<"script">, HelpText<"Read linker script">;
Add support for -L and -l command line switches. Patch by Igor Kudrin! llvm-svn: 248708
2015-09-28 20:52:21 +08:00
[ELF] - Implemented --section-start, -Ttext, -Tdata, -Tbss options. --section-start=sectionname=org Locate a section in the output file at the absolute address given by org. You may use this option as many times as necessary to locate multiple sections in the command line. org must be a single hexadecimal integer; for compatibility with other linkers, you may omit the leading `0x' usually associated with hexadecimal values. Note: there should be no white space between sectionname, the equals sign (“<=>”), and org. -Tbss=org -Tdata=org -Ttext=org Same as --section-start, with .bss, .data or .text as the sectionname. Differential revision: https://reviews.llvm.org/D24294 llvm-svn: 281458
2016-09-14 21:07:13 +08:00
def section_start: S<"section-start">, MetaVarName<"<address>">,
HelpText<"Set address of section">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def shared: F<"shared">, HelpText<"Build a shared object">;
ELF2: Print an error message for --relocatable. llvm-svn: 252923
2015-11-13 02:54:15 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm soname: Eq<"soname">, HelpText<"Set DT_SONAME">;
[ELF2] Implement -T/--script. This one tests more carefully SEARCH_DIR() as an added bonus. Differential Revision: http://reviews.llvm.org/D13626 llvm-svn: 249969
2015-10-11 11:53:36 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm sort_section: Eq<"sort-section">,
HelpText<"Specifies sections sorting rule when linkerscript is used">;
[ELF] - Implemented --sort-section cmd line option and SORT_NONE script command. This fixes Bug 30385 - SORT_NONE not implemented, `SORT_NONE' disables section sorting by ignoring the command line section sorting option. That is why this patch also implements --sort-section option. Description of sorting rules available at https://sourceware.org/binutils/docs/ld/Input-Section-Wildcards.html Differential revision: https://reviews.llvm.org/D24604 llvm-svn: 281771
2016-09-17 04:21:55 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def start_lib: F<"start-lib">,
HelpText<"Start a grouping of objects that should be treated as if they were together in an archive">;
[ELF2] Add --sysroot command line switch Reviewers: rafael, ruiu Subscribers: llvm-commits Projects: #lld Differential Revision: http://reviews.llvm.org/D13209 llvm-svn: 248715
2015-09-28 23:01:59 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def strip_all: F<"strip-all">, HelpText<"Strip all symbols">;
ELF2: Add -soname option. llvm-svn: 249058
2015-10-02 03:36:04 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def strip_debug: F<"strip-debug">, HelpText<"Strip debugging information">;
ELF: Add --strip-debug option. If --strip-debug option is given, then all sections whose names start with ".debug" are removed from output. llvm-svn: 265722
2016-04-08 05:04:51 +08:00
[ELF] - Implemented --symbol-ordering-file option. Patch allows to pass a symbols file to linker. LLD will map symbols to sections and sort sections in output according to symbol ordering file. That can help to reduce the startup time and/or amount of pagefaults during startup. Also, interesting benchmark result was produced by Rafael Espíndola. After applying the symbols file for clang he timed compiling X86MCTargetDesc.ii to an object file. The page faults went from just 56,988 to 56,946 since most faults are not in the binary. Running time went from 4.403053515 to 4.178112244. The speedup seems to be because of better cache locality. Differential revision: https://reviews.llvm.org/D26130 llvm-svn: 286440
2016-11-10 17:05:20 +08:00
def symbol_ordering_file: S<"symbol-ordering-file">,
HelpText<"Layout sections in the order specified by symbol file">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm sysroot: Eq<"sysroot">, HelpText<"Set the system root">;
ELF2: Tidy up Options.td. Fix indentation and sort options alphabetically. llvm-svn: 248969
2015-10-01 08:33:02 +08:00
[ELF/ARM] Add support for R_ARM_TARGET1 relocation. Differential Revision: https://reviews.llvm.org/D22990 llvm-svn: 277369
2016-08-02 03:28:13 +08:00
def target1_rel: F<"target1-rel">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_REL32">;
def target1_abs: F<"target1-abs">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_ABS32">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm target2: Eq<"target2">,
HelpText<"Interpret R_ARM_TARGET2 as <type>, where <type> is one of rel, abs, or got-rel">,
MetaVarName<"<type>">;
[ELF] Support for R_ARM_TARGET2 relocation The R_ARM_TARGET2 relocation is used in ARM exception tables to encode a data dependency that will only be dereferenced by code in the run-time support library. In a similar way to R_ARM_TARGET1 the handling of the relocation is target specific, it maps to one of R_ARM_ABS32, R_ARM_REL32 or R_ARM_GOT_PREL. The choice depends on the run-time library. R_ARM_GOT_PREL is used for linux and BSD, R_ARM_ABS32 and R_ARM_REL32 are used for bare-metal. The command line option --target2=<target> can be used to select the relocation used for R_ARM_TARGET2. The default is R_ARM_GOT_PREL. Differential revision: https://reviews.llvm.org/D25684 llvm-svn: 284404
2016-10-18 02:12:24 +08:00
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm threads: B<"threads",
"Run the linker multi-threaded",
"Do not run the linker multi-threaded">;
[ELF, PR27091] - Implemented -t/--trace option -t/--trace Print the names of the input files as ld processes them. This fixes https://llvm.org/bugs/show_bug.cgi?id=27091. Differential revision: http://reviews.llvm.org/D18517 llvm-svn: 264708
2016-03-29 16:45:40 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def trace: F<"trace">, HelpText<"Print the names of the input files">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm trace_symbol : Eq<"trace-symbol">, HelpText<"Trace references to symbols">;
Implement --trace-symbol=symbol option. Patch by Shridhar Joshi. This option provides names of all the link time modules which define and reference symbols requested by user. This helps to speed up application development by detecting references causing undefined symbols. It also helps in detecting symbols being resolved to wrong (unintended) definitions in case of applications containing multiple definitions for same symbols with different types, bindings. Implements PR28226. llvm-svn: 273536
2016-06-23 15:00:17 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm undefined: Eq<"undefined">,
[ELF2] Add --undefined option Add symbol specified with -u as undefined which may cause additional object files from archives to be linked into the resulting binary. Differential Revision: http://reviews.llvm.org/D13345 llvm-svn: 249295
2015-10-05 17:43:57 +08:00
HelpText<"Force undefined symbol during linking">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm unresolved_symbols: Eq<"unresolved-symbols">,
[ELF] - Added support for --unresolved-symbols option. Option has next description (http://linux.die.net/man/1/ld): "--unresolved-symbols=method Determine how to handle unresolved symbols. There are four possible values for method according to documentation: ignore-all: Do not report any unresolved symbols. report-all: Report all unresolved symbols. This is the default. ignore-in-object-files: Report unresolved symbols that are contained in shared libraries, but ignore them if they come from regular object files. ignore-in-shared-libs: Report unresolved symbols that come from regular object files, but ignore them if they come from shared libraries." Since report-all is default and we traditionally do not report about undefined symbols in lld, report-all does not report about undefines from DSO. ignore-in-object-files also does not do that. Handling of that option differs from what gnu linkers do. Option works in next way in lld: ignore-all: Do not report any unresolved symbols. report-all: Report all unresolved symbols except symbols from DSOs. This is the default. ignore-in-object-files: The same as ignore-all. gnore-in-shared-libs: The same as report-all. This is PR24524. Differential revision: http://reviews.llvm.org/D21794 llvm-svn: 274123
2016-06-29 20:35:04 +08:00
HelpText<"Determine how to handle unresolved symbols">;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm rsp_quoting: Eq<"rsp-quoting">,
[ELF] Introduce a flag to parse response files according to windows rules. Differential Revision: http://reviews.llvm/org/D22015 llvm-svn: 274684
2016-07-07 05:24:34 +08:00
HelpText<"Quoting style for response files. Values supported: windows|posix">;
[ELF] - Exit on --version call. GNU linkers disagree here. Though both -version and -v are mentioned in help to print the version information, GNU ld just normally exits, while gold can continue linking. We are compatible with ld.bfd here. This fixes PR31057. Differential revision: https://reviews.llvm.org/D26865 llvm-svn: 287448
2016-11-20 02:14:24 +08:00
def v: Flag<["-"], "v">, HelpText<"Display the version number">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def verbose: F<"verbose">, HelpText<"Verbose mode">;
[ELF] - Exit on --version call. GNU linkers disagree here. Though both -version and -v are mentioned in help to print the version information, GNU ld just normally exits, while gold can continue linking. We are compatible with ld.bfd here. This fixes PR31057. Differential revision: https://reviews.llvm.org/D26865 llvm-svn: 287448
2016-11-20 02:14:24 +08:00
def version: F<"version">, HelpText<"Display the version number and exit">;
ELF: Add --version option. llvm-svn: 262167
2016-02-28 11:18:07 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm version_script: Eq<"version-script">, HelpText<"Read a version script">;
ELF: Implement basic support for --version-script. This patch only implements support for version scripts of the form: { [ global: symbol1; symbol2; [...]; symbolN; ] local: *; }; No wildcards are supported, other than for the local entry. Symbol versioning is also not supported. It works by introducing a new Symbol flag which tracks whether a symbol appears in the global section of a version script. This patch also simplifies the logic in SymbolBody::isPreemptible(), and teaches it to handle the case where symbols with default visibility in DSOs do not appear in the dynamic symbol table because of a version script. Fixes PR27482. Differential Revision: http://reviews.llvm.org/D19430 llvm-svn: 267208
2016-04-23 04:21:26 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def warn_common: F<"warn-common">,
HelpText<"Warn about duplicate common symbols">;
Fix varaible names that correspond to command line options. llvm-svn: 298632
2017-03-24 02:16:42 +08:00
def warn_unresolved_symbols: F<"warn-unresolved-symbols">,
[ELF] Add warn-unresolved-symbols/error-unresolved-symbols options Patch by Dmitry Mikulin. PR: 31735 Differential Revision: https://reviews.llvm.org/D29150 llvm-svn: 293139
2017-01-26 10:19:20 +08:00
HelpText<"Report unresolved symbols as warnings">;
Consolidate --foo and --no-foo options. NFC. Differential Revision: https://reviews.llvm.org/D42859 llvm-svn: 324141
2018-02-03 05:25:51 +08:00
defm whole_archive: B<"whole-archive",
"Force load of all members in a static library",
"Do not force load of all members in a static library">;
[ELF2] Add --[no-]whole-archive command line switches Summary: If --whole-archive is used, all symbols from the following archives are added to the output. --no-whole-archive restores default behavior. These switches can be used multiple times. NB. We have to keep an ArchiveFile instance within SymbolTable even if --whole-archive mode is active since it can be a thin archive which contains just names of external files. In that case actual memory buffers for the archive members will be stored within the File member of ArchiveFile class. Reviewers: rafael, ruiu Subscribers: grimar, llvm-commits Projects: #lld Differential Revision: http://reviews.llvm.org/D13286 llvm-svn: 249045
2015-10-02 02:02:21 +08:00
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
defm wrap: Eq<"wrap">, HelpText<"Use wrapper functions for symbol">,
MetaVarName<"<symbol>">;
ELF: Implement --wrap. In this patch, all symbols are resolved normally and then wrap options are applied. Renaming is implemented by mutating `Body` pointers of Symbols. (As a result, Symtab.find(SymbolName)->getName() may return a string that's different from SymbolName, but that is by design. I designed the symbol and the symbol table to allow this kind of operations.) http://reviews.llvm.org/D15896 llvm-svn: 257075
2016-01-08 01:20:07 +08:00
Do not allow "--" with single-letter options. In general, we accept both -foo and --foo as command line options, but if an option is a single letter option, we don't want to allow double dashes because GNU linkers don't accept such combination. llvm-svn: 274219
2016-06-30 16:43:23 +08:00
def z: JoinedOrSeparate<["-"], "z">, MetaVarName<"<option>">,
[ELF2] -z now option implemented When generating an executable or shared library, mark it to tell the dynamic linker to resolve all symbols when the program is started, or when the shared library is linked to using dlopen, instead of deferring function call resolution to the point when the function is first called. Differential Revision: http://reviews.llvm.org/D13468 llvm-svn: 249551
2015-10-07 23:00:21 +08:00
HelpText<"Linker option extensions">;
ELF2: Tidy up Options.td. Fix indentation and sort options alphabetically. llvm-svn: 248969
2015-10-01 08:33:02 +08:00
// Aliases
Reverted r286451 "[ELF] - Allow separate form for -f (alias for -auxiliary)." Though the patch was technically correct, the only FreeBSD port (noticed atm) that tried using it was www/mod_jk. And it seems just passed gcc option to linker by mistake: "-Wl,-L-L/usr/local/lib -Wl,-rpath,/usr/local/lib -Wl,-fstack-protector -Wl,-fstack-protector -o mod_jk.la " Given that it is an easy mistake to make, reverting for now. llvm-svn: 286458
2016-11-10 22:48:39 +08:00
def alias_auxiliary: Separate<["-"], "f">, Alias<auxiliary>;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def alias_Bdynamic_call_shared: F<"call_shared">, Alias<Bdynamic>;
def alias_Bdynamic_dy: F<"dy">, Alias<Bdynamic>;
def alias_Bstatic_dn: F<"dn">, Alias<Bstatic>;
def alias_Bstatic_non_shared: F<"non_shared">, Alias<Bstatic>;
def alias_Bstatic_static: F<"static">, Alias<Bstatic>;
Do not allocate space for common symbols with -r Currently ld.lld -r allocates space for common symbols, whereas ld.bfd -r doesn't. As a result the OpenBSD makefile bits for creating libraries fail as they use ld -X -r to strip local symbols, which results in duplicate symbol errors because space for the common symbols has been allocated. The diff also implements the --define-commons option such that allocation of commons can be forced even if -r is used. Patch by Mark Kettenis. llvm-svn: 292878
2017-01-24 11:41:20 +08:00
def alias_define_common_d: Flag<["-"], "d">, Alias<define_common>;
def alias_define_common_dc: F<"dc">, Alias<define_common>;
def alias_define_common_dp: F<"dp">, Alias<define_common>;
Do not allow "--" with single-letter options. In general, we accept both -foo and --foo as command line options, but if an option is a single letter option, we don't want to allow double dashes because GNU linkers don't accept such combination. llvm-svn: 274219
2016-06-30 16:43:23 +08:00
def alias_discard_all_x: Flag<["-"], "x">, Alias<discard_all>;
def alias_discard_locals_X: Flag<["-"], "X">, Alias<discard_locals>;
Recommit r294464 "[ELF] - Added partial support for --emit-relocs (no --gc-section case, no /DISCARD/ support) #3" with temporarily file name fix in testcase. Original commit message: -q, --emit-relocs - Generate relocations in output Simplest implementation: * no GC case, * no "/DISCARD/" linkerscript command support. This patch is extracted from D28612 / D29636, Relative to PR31579. Differential revision: https://reviews.llvm.org/D29663 llvm-svn: 294469
2017-02-09 00:18:10 +08:00
def alias_emit_relocs: Flag<["-"], "q">, Alias<emit_relocs>;
Do not allow "--" with single-letter options. In general, we accept both -foo and --foo as command line options, but if an option is a single letter option, we don't want to allow double dashes because GNU linkers don't accept such combination. llvm-svn: 274219
2016-06-30 16:43:23 +08:00
def alias_entry_e: JoinedOrSeparate<["-"], "e">, Alias<entry>;
def alias_export_dynamic_E: Flag<["-"], "E">, Alias<export_dynamic>;
[ELF] - Implement filter library support (-F / --filter) This is PR33766. -F name --filter=name When creating an ELF shared object, set the internal DT_FILTER field to the specified name. This tells the dynamic linker that the symbol table of the shared object which is being created should be used as a filter on the symbol table of the shared object name. If you later link a program against this filter object, then, when you run the program, the dynamic linker will see the DT_FILTER field. The dynamic linker will resolve symbols according to the symbol table of the filter object as usual, but it will actually link to the definitions found in the shared object name. Thus the filter object can be used to select a subset of the symbols provided by the object name. (https://linux.die.net/man/1/ld). Shared Objects as Filters: https://docs.oracle.com/cd/E19683-01/817-3677/chapter4-31738/index.html Differential revision: https://reviews.llvm.org/D35352 llvm-svn: 308167
2017-07-17 17:43:18 +08:00
def alias_filter: Separate<["-"], "F">, Alias<filter>;
[ELF] Add support for -b binary Implemented by building an ELF file in memory. elf, default, and binary match gold behavior. Differential Revision: https://reviews.llvm.org/D24060 llvm-svn: 281108
2016-09-10 06:08:04 +08:00
def alias_format_b: S<"b">, Alias<format>;
[ELF] - Introduce multiclass Eq helper for Options.td Eq helper allows to define `XXX` and `XXX=` options forms easily. Patch adds testcases for few aliases. Differential revision: https://reviews.llvm.org/D35619 llvm-svn: 308752
2017-07-22 00:27:26 +08:00
def alias_library: JoinedOrSeparate<["-"], "l">, Alias<library>;
def alias_library_path: JoinedOrSeparate<["-"], "L">, Alias<library_path>;
[ELF] - Implemented -N (-omagic) command line option. -N (-omagic) Set the text and data sections to be readable and writable. Also, do not page-align the data segment. Differential revision: https://reviews.llvm.org/D26888 llvm-svn: 288123
2016-11-29 17:43:51 +08:00
def alias_omagic: Flag<["-"], "N">, Alias<omagic>;
Fix -output option. Usually, options that are longer than one character can be preceded either by "-" or "--", but options starting with "o" are exceptions because they conflict with "-o" option. They have to be preceded by "--". llvm-svn: 281004
2016-09-09 08:25:56 +08:00
def alias_o_output: Joined<["--"], "output=">, Alias<o>;
def alias_o_output2 : Separate<["--"], "output">, Alias<o>;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def alias_pie_pic_executable: F<"pic-executable">, Alias<pie>;
Add -print-map and -M options. llvm-svn: 292046
2017-01-15 10:52:34 +08:00
def alias_print_map_M: Flag<["-"], "M">, Alias<print_map>;
Do not allow "--" with single-letter options. In general, we accept both -foo and --foo as command line options, but if an option is a single letter option, we don't want to allow double dashes because GNU linkers don't accept such combination. llvm-svn: 274219
2016-06-30 16:43:23 +08:00
def alias_relocatable_r: Flag<["-"], "r">, Alias<relocatable>;
[ELF] - Add separate form for -R alias. During link of devel/chrpath (FreeBSD port), found next issue: /usr/bin/ld: error: unclosed comment in a linker script /usr/bin/ld: error: line 1: unknown directive: � /usr/bin/ld: error: �� Problem was not obvious and the reason was that we did not accept the separate form of -R. While invocation line contained it: cc -Wl,-R /usr/local/lib -o prog prog.c CPIO file produced contained /usr/local/lib file. Which looks because of reasons above contained inside the content of whole lib folder, and it then was passed as an input and proccessed as linker script. llvm-svn: 286378
2016-11-10 00:38:15 +08:00
def alias_rpath_R: JoinedOrSeparate<["-"], "R">, Alias<rpath>;
Do not allow "--" with single-letter options. In general, we accept both -foo and --foo as command line options, but if an option is a single letter option, we don't want to allow double dashes because GNU linkers don't accept such combination. llvm-svn: 274219
2016-06-30 16:43:23 +08:00
def alias_script_T: JoinedOrSeparate<["-"], "T">, Alias<script>;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def alias_shared_Bshareable: F<"Bshareable">, Alias<shared>;
Do not allow "--" with single-letter options. In general, we accept both -foo and --foo as command line options, but if an option is a single letter option, we don't want to allow double dashes because GNU linkers don't accept such combination. llvm-svn: 274219
2016-06-30 16:43:23 +08:00
def alias_soname_h: JoinedOrSeparate<["-"], "h">, Alias<soname>;
def alias_strip_all: Flag<["-"], "s">, Alias<strip_all>;
def alias_strip_debug_S: Flag<["-"], "S">, Alias<strip_debug>;
def alias_trace: Flag<["-"], "t">, Alias<trace>;
def alias_trace_symbol_y : JoinedOrSeparate<["-"], "y">, Alias<trace_symbol>;
[ELF] - Make LLD accept Ttext-segment X/Ttext-segment=X aliases for -Ttext. It os used in work/emulators/qemu-user-static port. Which tries to use -Ttext-segment and then: # In case ld does not support -Ttext-segment, edit the default linker # script via sed to set the .text start addr. This is needed on FreeBSD # at least. <here it calls -verbose to extract and edit default bfd linker script.> Actually now we are do not fully support -Ttext properly (see D27613), but we also seems never will provide anything close to default script, like bfd do, so at least this patch introduces proper alias handling. llvm-svn: 289827
2016-12-16 00:12:34 +08:00
def alias_Ttext_segment: S<"Ttext-segment">, Alias<Ttext>;
def alias_Ttext_segment_eq: J<"Ttext-segment=">, Alias<Ttext>;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def alias_undefined_u: JoinedOrSeparate<["-"], "u">, Alias<undefined>;
Define -v and -V as aliases to --version. This is for GNU compatibility. llvm-svn: 273847
2016-06-27 15:35:00 +08:00
def alias_version_V: Flag<["-"], "V">, Alias<version>;
ELF2: Ignore some command line argument that clang passes to the linker. llvm-svn: 248967
2015-10-01 08:24:54 +08:00
ELF2: Make comment less opinionated. llvm-svn: 253058
2015-11-14 02:56:07 +08:00
// Our symbol resolution algorithm handles symbols in archive files differently
ELF2: Add comments and reorganize option list a bit. llvm-svn: 252978
2015-11-13 08:26:12 +08:00
// than traditional linkers, so we don't need --start-group and --end-group.
ELF2: Make comment less opinionated. llvm-svn: 253058
2015-11-14 02:56:07 +08:00
// These options are recongized for compatibility but ignored.
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def end_group: F<"end-group">;
Do not allow "--" with single-letter options. In general, we accept both -foo and --foo as command line options, but if an option is a single letter option, we don't want to allow double dashes because GNU linkers don't accept such combination. llvm-svn: 274219
2016-06-30 16:43:23 +08:00
def end_group_paren: Flag<["-"], ")">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def start_group: F<"start-group">;
Do not allow "--" with single-letter options. In general, we accept both -foo and --foo as command line options, but if an option is a single letter option, we don't want to allow double dashes because GNU linkers don't accept such combination. llvm-svn: 274219
2016-06-30 16:43:23 +08:00
def start_group_paren: Flag<["-"], "(">;
ELF2: Add comments and reorganize option list a bit. llvm-svn: 252978
2015-11-13 08:26:12 +08:00
Move LTO options above "all options beyond this are ignored" comment llvm-svn: 301771
2017-04-30 21:44:52 +08:00
// LTO-related options.
def lto_aa_pipeline: J<"lto-aa-pipeline=">,
HelpText<"AA pipeline to run during LTO. Used in conjunction with -lto-newpm-passes">;
def lto_newpm_passes: J<"lto-newpm-passes=">,
HelpText<"Passes to run during LTO">;
def lto_partitions: J<"lto-partitions=">,
HelpText<"Number of LTO codegen partitions">;
def disable_verify: F<"disable-verify">;
def mllvm: S<"mllvm">;
def opt_remarks_filename: Separate<["--"], "opt-remarks-filename">,
HelpText<"YAML output file for optimization remarks">;
def opt_remarks_with_hotness: Flag<["--"], "opt-remarks-with-hotness">,
Correct typo in help text Information is a mass noun and doesn't take a plural "s". llvm-svn: 322180
2018-01-10 20:55:14 +08:00
HelpText<"Include hotness information in the optimization remarks file">;
[ELF] - LTO: Try to be option compatible with the gold plugin. This is relative to PR30720. Previously we ignored all --plugin-opt arguments. Patch adds support for them. Patch does not add any new LTO options, and just implements mapping from --plugin-opt to existent ones. Differential revision: https://reviews.llvm.org/D36227 llvm-svn: 310826
2017-08-14 18:17:30 +08:00
defm plugin_opt: Eq<"plugin-opt">,
HelpText<"specifies LTO options for compatibility with GNU linkers">;
Move LTO options above "all options beyond this are ignored" comment llvm-svn: 301771
2017-04-30 21:44:52 +08:00
def save_temps: F<"save-temps">;
def thinlto_cache_dir: J<"thinlto-cache-dir=">,
HelpText<"Path to ThinLTO cached object file directory">;
def thinlto_cache_policy: S<"thinlto-cache-policy">,
HelpText<"Pruning policy for the ThinLTO cache">;
def thinlto_jobs: J<"thinlto-jobs=">, HelpText<"Number of ThinLTO jobs">;
[LTO] Ignore -plugin/-plugin-opt options. This is required to get 'clang -flto' to work transparently with lld. Please refer to the short comment in the code for a more detailed explanation. llvm-svn: 263862
2016-03-19 08:40:09 +08:00
// Ignore LTO plugin-related options.
// clang -flto passes -plugin and -plugin-opt to the linker. This is required
// for ld.gold and ld.bfd to get LTO working. But it's not for lld which doesn't
// rely on a plugin. Instead of detecting which linker is used on clang side we
// just ignore the option on lld side as it's easier. In fact, the linker could
// be called 'ld' and understanding which linker is used would require parsing of
// --version output.
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def plugin: S<"plugin">;
def plugin_eq: J<"plugin=">;
[LTO] Ignore -plugin/-plugin-opt options. This is required to get 'clang -flto' to work transparently with lld. Please refer to the short comment in the code for a more detailed explanation. llvm-svn: 263862
2016-03-19 08:40:09 +08:00
ELF2: Add comments and reorganize option list a bit. llvm-svn: 252978
2015-11-13 08:26:12 +08:00
// Options listed below are silently ignored for now for compatibility.
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def allow_shlib_undefined: F<"allow-shlib-undefined">;
Simplify ignored options. Since the flag is ignored anyway, it doesn't matter whether it is an alias or not. llvm-svn: 309055
2017-07-26 07:32:05 +08:00
def cref: F<"cref">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def detect_odr_violations: F<"detect-odr-violations">;
[ELF] Ignore -g option for compatibility. Also ld.bfd and ld.gold ignore this options. I hit this one in the wild, and just ignoring it's trivial, so, let's do it. llvm-svn: 277531
2016-08-03 06:14:00 +08:00
def g: Flag<["-"], "g">;
ELF: Ignore --long-plt flag. This flag can be ignored because we always emit long PLTs. Differential Revision: https://reviews.llvm.org/D41025 llvm-svn: 320178
2017-12-09 03:36:19 +08:00
def long_plt: F<"long-plt">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def no_add_needed: F<"no-add-needed">;
def no_allow_shlib_undefined: F<"no-allow-shlib-undefined">;
Simplify ignored options. Since the flag is ignored anyway, it doesn't matter whether it is an alias or not. llvm-svn: 309055
2017-07-26 07:32:05 +08:00
def no_copy_dt_needed_entries: F<"no-copy-dt-needed-entries">;
Ignore -no-ctors-in-init-array. Patch by dxf@google.com. llvm-svn: 318513
2017-11-17 16:17:36 +08:00
def no_ctors_in_init_array: F<"no-ctors-in-init-array">;
Ignore -no-keep-memory. When the -no-keep-memory option is given, BFD linker tries to save memory in their own way. Since our internal architecture is completely different from that linker, that option doesn't make sense to us. llvm-svn: 301772
2017-04-30 21:45:06 +08:00
def no_keep_memory: F<"no-keep-memory">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def no_mmap_output_file: F<"no-mmap-output-file">;
def no_warn_common: F<"no-warn-common">;
def no_warn_mismatch: F<"no-warn-mismatch">;
def rpath_link: S<"rpath-link">;
def rpath_link_eq: J<"rpath-link=">;
Ignore --sort-common. Because we always sort common symbols, we can ignore the option. llvm-svn: 273842
2016-06-27 10:43:27 +08:00
def sort_common: F<"sort-common">;
[ELF] - Ignore -stats command line option. llvm-svn: 286348
2016-11-09 16:59:59 +08:00
def stats: F<"stats">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def warn_execstack: F<"warn-execstack">;
[ELF] - Ignore --warn-once option. Was discussed in D35797 thread. llvm-svn: 309096
2017-07-26 18:25:49 +08:00
def warn_once: F<"warn-once">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def warn_shared_textrel: F<"warn-shared-textrel">;
ELF: ignore -EB and -EL options Differential Revision: https://reviews.llvm.org/D23124 llvm-svn: 279058
2016-08-18 20:44:45 +08:00
def EB : F<"EB">;
def EL : F<"EL">;
ELF: ignored option -G may be joined with its argument llvm-svn: 278819
2016-08-17 00:26:46 +08:00
def G: JoinedOrSeparate<["-"], "G">;
ELF: Add -Qy as ignored option GCC passes it by default on powerpc64 on FreeBSD. GNU ld claims "this option is ignored for SVR4 compatibility", so we can ignore it too. Differential Revision: https://reviews.llvm.org/D24313 llvm-svn: 280864
2016-09-08 05:10:25 +08:00
def Qy : F<"Qy">;