Vendor import of lld trunk r321017:vendor/lld/lld-trunk-r321017

https://llvm.org/svn/llvm-project/lld/trunk@321017

1 files changed, 100 insertions, 77 deletions

diff --git a/ELF/Options.td b/ELF/Options.td
index 1400a206bdfc..20027e90aefd 100644
--- a/ELF/Options.td
+++ b/ELF/Options.td
@@ -5,7 +5,11 @@ include "llvm/Option/OptParser.td"
 class F<string name>: Flag<["--", "-"], name>;
 class J<string name>: Joined<["--", "-"], name>;
 class S<string name>: Separate<["--", "-"], name>;
-class JS<string name>: JoinedOrSeparate<["--", "-"], name>;
+
+multiclass Eq<string name> {
+  def "": Separate<["--", "-"], name>;
+  def _eq: Joined<["--", "-"], name # "=">, Alias<!cast<Separate>(NAME)>;
+}
 
 def auxiliary: S<"auxiliary">, HelpText<"Set DT_AUXILIARY field to the specified name">;
 
@@ -22,21 +26,24 @@ def build_id: F<"build-id">, HelpText<"Generate build ID note">;
 
 def build_id_eq: J<"build-id=">, HelpText<"Generate build ID note">;
 
-def compress_debug_sections : J<"compress-debug-sections=">,
+defm compress_debug_sections : Eq<"compress-debug-sections">,
   HelpText<"Compress DWARF debug sections">;
 
-def defsym: J<"defsym=">, HelpText<"Define a symbol alias">;
+defm defsym: Eq<"defsym">, HelpText<"Define a symbol alias">;
 
-def L: JoinedOrSeparate<["-"], "L">, MetaVarName<"<dir>">,
-  HelpText<"Add a directory to the library search path">;
+defm library_path: Eq<"library-path">,
+  HelpText<"Add a directory to the library search path">, MetaVarName<"<dir>">;
 
-def O: Joined<["-"], "O">, HelpText<"Optimize output file size">;
+def O: JoinedOrSeparate<["-"], "O">, HelpText<"Optimize output file size">;
 
-def Tbss: S<"Tbss">, HelpText<"Same as --section-start with .bss as the sectionname">;
+defm Tbss: Eq<"Tbss">,
+  HelpText<"Same as --section-start with .bss as the sectionname">;
 
-def Tdata: S<"Tdata">, HelpText<"Same as --section-start with .data as the sectionname">;
+defm Tdata: Eq<"Tdata">,
+  HelpText<"Same as --section-start with .data as the sectionname">;
 
-def Ttext: S<"Ttext">, HelpText<"Same as --section-start with .text as the sectionname">;
+defm Ttext: Eq<"Ttext">,
+  HelpText<"Same as --section-start with .text as the sectionname">;
 
 def allow_multiple_definition: F<"allow-multiple-definition">,
   HelpText<"Allow multiple definitions">;
@@ -44,6 +51,9 @@ def allow_multiple_definition: F<"allow-multiple-definition">,
 def as_needed: F<"as-needed">,
   HelpText<"Only set DT_NEEDED for shared libraries if used">;
 
+// -chroot doesn't have a help text because it is an internal option.
+def chroot: S<"chroot">;
+
 def color_diagnostics: F<"color-diagnostics">,
   HelpText<"Use colors in diagnostics">;
 
@@ -69,7 +79,7 @@ def discard_none: F<"discard-none">,
 def dynamic_linker: S<"dynamic-linker">,
   HelpText<"Which dynamic linker to use">;
 
-def dynamic_list: S<"dynamic-list">,
+defm dynamic_list: Eq<"dynamic-list">,
   HelpText<"Read a list of dynamic symbols">;
 
 def eh_frame_hdr: F<"eh-frame-hdr">,
@@ -83,37 +93,42 @@ def enable_new_dtags: F<"enable-new-dtags">,
 def end_lib: F<"end-lib">,
   HelpText<"End a grouping of objects that should be treated as if they were together in an archive">;
 
-def entry: S<"entry">, MetaVarName<"<entry>">,
-  HelpText<"Name of entry point symbol">;
+defm entry: Eq<"entry">, HelpText<"Name of entry point symbol">,
+  MetaVarName<"<entry>">;
 
-def error_limit: S<"error-limit">,
+defm error_limit: Eq<"error-limit">,
   HelpText<"Maximum number of errors to emit before stopping (0 = no limit)">;
 
 def error_unresolved_symbols: F<"error-unresolved-symbols">,
   HelpText<"Report unresolved symbols as errors">;
 
-def exclude_libs: S<"exclude-libs">,
+defm exclude_libs: Eq<"exclude-libs">,
   HelpText<"Exclude static libraries from automatic export">;
 
 def export_dynamic: F<"export-dynamic">,
   HelpText<"Put symbols in the dynamic symbol table">;
 
-def export_dynamic_symbol: S<"export-dynamic-symbol">,
+defm export_dynamic_symbol: Eq<"export-dynamic-symbol">,
   HelpText<"Put a symbol in the dynamic symbol table">;
 
 def fatal_warnings: F<"fatal-warnings">,
   HelpText<"Treat warnings as errors">;
 
-def filter: J<"filter=">, HelpText<"Set DT_FILTER field to the specified name">;
+defm filter: Eq<"filter">,
+  HelpText<"Set DT_FILTER field to the specified name">;
 
-def fini: S<"fini">, MetaVarName<"<symbol>">,
-  HelpText<"Specify a finalizer function">;
+defm fini: Eq<"fini">,
+  HelpText<"Specify a finalizer function">, MetaVarName<"<symbol>">;
+
+def fix_cortex_a53_843419: F<"fix-cortex-a53-843419">,
+  HelpText<"Apply fixes for AArch64 Cortex-A53 erratum 843419">;
 
 def full_shutdown : F<"full-shutdown">,
   HelpText<"Perform a full shutdown instead of calling _exit">;
 
-def format: J<"format=">, MetaVarName<"<input-format>">,
-  HelpText<"Change the input format of the inputs following this option">;
+defm format: Eq<"format">,
+  HelpText<"Change the input format of the inputs following this option">,
+  MetaVarName<"<input-format>">;
 
 def gc_sections: F<"gc-sections">,
   HelpText<"Enable garbage collection of unused sections">;
@@ -121,29 +136,35 @@ def gc_sections: F<"gc-sections">,
 def gdb_index: F<"gdb-index">,
   HelpText<"Generate .gdb_index section">;
 
-def hash_style: S<"hash-style">,
+defm hash_style: Eq<"hash-style">,
   HelpText<"Specify hash style (sysv, gnu or both)">;
 
 def help: F<"help">, HelpText<"Print option help">;
 
 def icf_all: F<"icf=all">, HelpText<"Enable identical code folding">;
 
+def icf_data: F<"icf-data">,
+  HelpText<"Enable ICF to also fold identical read only data">;
+
 def icf_none: F<"icf=none">, HelpText<"Disable identical code folding">;
 
-def image_base : J<"image-base=">, HelpText<"Set the base address">;
+defm image_base : Eq<"image-base">, HelpText<"Set the base address">;
 
-def init: S<"init">, MetaVarName<"<symbol>">,
-  HelpText<"Specify an initializer function">;
+defm init: Eq<"init">, HelpText<"Specify an initializer function">,
+  MetaVarName<"<symbol>">;
 
-def l: JoinedOrSeparate<["-"], "l">, MetaVarName<"<libName>">,
-  HelpText<"Root name of library to use">;
+defm library: Eq<"library">, HelpText<"Root name of library to use">,
+  MetaVarName<"<libName>">;
 
 def lto_O: J<"lto-O">, MetaVarName<"<opt-level>">,
   HelpText<"Optimization level for LTO">;
 
 def m: JoinedOrSeparate<["-"], "m">, HelpText<"Set target emulation">;
 
-def Map: JS<"Map">, HelpText<"Print a link map to the specified file">;
+defm Map: Eq<"Map">, HelpText<"Print a link map to the specified file">;
+
+def merge_exidx_entries: F<"merge-exidx-entries">,
+  HelpText<"Enable merging .ARM.exidx entries">;
 
 def nostdlib: F<"nostdlib">,
   HelpText<"Only search directories specified on the command line">;
@@ -163,15 +184,24 @@ def no_demangle: F<"no-demangle">,
 def no_dynamic_linker: F<"no-dynamic-linker">,
   HelpText<"Inhibit output of .interp section">;
 
+def no_eh_frame_hdr: F<"no-eh-frame-hdr">,
+  HelpText<"Do not create .eh_frame_hdr section">;
+
 def no_export_dynamic: F<"no-export-dynamic">;
 def no_fatal_warnings: F<"no-fatal-warnings">;
 
 def no_gc_sections: F<"no-gc-sections">,
   HelpText<"Disable garbage collection of unused sections">;
 
+def no_gdb_index: F<"no-gdb-index">,
+  HelpText<"Do not generate .gdb_index section">;
+
 def no_gnu_unique: F<"no-gnu-unique">,
   HelpText<"Disable STB_GNU_UNIQUE symbol binding">;
 
+def no_merge_exidx_entries: F<"no-merge-exidx-entries">,
+  HelpText<"Disable merging .ARM.exidx entries">;
+
 def no_threads: F<"no-threads">,
   HelpText<"Do not run the linker multi-threaded">;
 
@@ -183,7 +213,14 @@ def noinhibit_exec: F<"noinhibit-exec">,
 
 def nopie: F<"nopie">, HelpText<"Do not create a position independent executable">;
 
-def no_rosegment: F<"no-rosegment">, HelpText<"Do not put read-only non-executable sections in their own segment">;
+def no_omagic: Flag<["--"], "no-omagic">, MetaVarName<"<magic>">,
+  HelpText<"Do not set the text data sections to be writable">;
+
+def no_print_gc_sections: F<"no-print-gc-sections">,
+  HelpText<"Do not list removed unused sections">;
+
+def no_rosegment: F<"no-rosegment">,
+  HelpText<"Do not put read-only non-executable sections in their own segment">;
 
 def no_undefined: F<"no-undefined">,
   HelpText<"Report unresolved symbols even if the linker is creating a shared library">;
@@ -200,6 +237,12 @@ def oformat: Separate<["--"], "oformat">, MetaVarName<"<format>">,
 def omagic: Flag<["--"], "omagic">, MetaVarName<"<magic>">,
   HelpText<"Set the text and data sections to be readable and writable">;
 
+defm orphan_handling: Eq<"orphan-handling">,
+  HelpText<"Control how orphan sections are handled when linker script used">;
+
+def pack_dyn_relocs_eq: J<"pack-dyn-relocs=">, MetaVarName<"<format>">,
+  HelpText<"Pack dynamic relocations in the given format (none or android)">;
+
 def pie: F<"pie">, HelpText<"Create a position independent executable">;
 
 def print_gc_sections: F<"print-gc-sections">,
@@ -208,26 +251,28 @@ def print_gc_sections: F<"print-gc-sections">,
 def print_map: F<"print-map">,
   HelpText<"Print a link map to the standard output">;
 
-def reproduce: S<"reproduce">,
+defm reproduce: Eq<"reproduce">,
   HelpText<"Dump linker invocation and input files for debugging">;
 
-def rpath: S<"rpath">, HelpText<"Add a DT_RUNPATH to the output">;
+defm rpath: Eq<"rpath">, HelpText<"Add a DT_RUNPATH to the output">;
 
 def relocatable: F<"relocatable">, HelpText<"Create relocatable object file">;
 
-def retain_symbols_file: J<"retain-symbols-file=">, MetaVarName<"<file>">,
-  HelpText<"Retain only the symbols listed in the file">;
+defm retain_symbols_file: Eq<"retain-symbols-file">,
+  HelpText<"Retain only the symbols listed in the file">,
+  MetaVarName<"<file>">;
 
-def script: S<"script">, HelpText<"Read linker script">;
+defm script: Eq<"script">, HelpText<"Read linker script">;
 
 def section_start: S<"section-start">, MetaVarName<"<address>">,
   HelpText<"Set address of section">;
 
 def shared: F<"shared">, HelpText<"Build a shared object">;
 
-def soname: J<"soname=">, HelpText<"Set DT_SONAME">;
+defm soname: Eq<"soname">, HelpText<"Set DT_SONAME">;
 
-def sort_section: S<"sort-section">, HelpText<"Specifies sections sorting rule when linkerscript is used">;
+defm sort_section: Eq<"sort-section">,
+  HelpText<"Specifies sections sorting rule when linkerscript is used">;
 
 def start_lib: F<"start-lib">,
   HelpText<"Start a grouping of objects that should be treated as if they were together in an archive">;
@@ -239,27 +284,29 @@ def strip_debug: F<"strip-debug">, HelpText<"Strip debugging information">;
 def symbol_ordering_file: S<"symbol-ordering-file">,
   HelpText<"Layout sections in the order specified by symbol file">;
 
-def sysroot: J<"sysroot=">, HelpText<"Set the system root">;
+defm sysroot: Eq<"sysroot">, HelpText<"Set the system root">;
 
 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">;
 
-def target2: J<"target2=">, MetaVarName<"<type>">, HelpText<"Interpret R_ARM_TARGET2 as <type>, where <type> is one of rel, abs, or got-rel">;
+defm target2: Eq<"target2">,
+  HelpText<"Interpret R_ARM_TARGET2 as <type>, where <type> is one of rel, abs, or got-rel">,
+  MetaVarName<"<type>">;
 
 def threads: F<"threads">, HelpText<"Run the linker multi-threaded">;
 
 def trace: F<"trace">, HelpText<"Print the names of the input files">;
 
-def trace_symbol : S<"trace-symbol">, HelpText<"Trace references to symbols">;
+defm trace_symbol : Eq<"trace-symbol">, HelpText<"Trace references to symbols">;
 
-def undefined: S<"undefined">,
+defm undefined: Eq<"undefined">,
   HelpText<"Force undefined symbol during linking">;
 
-def unresolved_symbols: J<"unresolved-symbols=">,
+defm unresolved_symbols: Eq<"unresolved-symbols">,
   HelpText<"Determine how to handle unresolved symbols">;
 
-def rsp_quoting: J<"rsp-quoting=">,
+defm rsp_quoting: Eq<"rsp-quoting">,
   HelpText<"Quoting style for response files. Values supported: windows|posix">;
 
 def v: Flag<["-"], "v">, HelpText<"Display the version number">;
@@ -268,8 +315,7 @@ def verbose: F<"verbose">, HelpText<"Verbose mode">;
 
 def version: F<"version">, HelpText<"Display the version number and exit">;
 
-def version_script: S<"version-script">,
-  HelpText<"Read a version script">;
+defm version_script: Eq<"version-script">, HelpText<"Read a version script">;
 
 def warn_common: F<"warn-common">,
   HelpText<"Warn about duplicate common symbols">;
@@ -280,8 +326,8 @@ def warn_unresolved_symbols: F<"warn-unresolved-symbols">,
 def whole_archive: F<"whole-archive">,
   HelpText<"Force load of all members in a static library">;
 
-def wrap: S<"wrap">, MetaVarName<"<symbol>">,
-  HelpText<"Use wrapper functions for symbol">;
+defm wrap: Eq<"wrap">, HelpText<"Use wrapper functions for symbol">,
+  MetaVarName<"<symbol>">;
 
 def z: JoinedOrSeparate<["-"], "z">, MetaVarName<"<option>">,
   HelpText<"Linker option extensions">;
@@ -293,60 +339,36 @@ 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>;
-def alias_L__library_path: J<"library-path=">, Alias<L>;
 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>;
-def alias_defsym: S<"defsym">, Alias<defsym>;
 def alias_discard_all_x: Flag<["-"], "x">, Alias<discard_all>;
 def alias_discard_locals_X: Flag<["-"], "X">, Alias<discard_locals>;
-def alias_dynamic_list: J<"dynamic-list=">, Alias<dynamic_list>;
 def alias_emit_relocs: Flag<["-"], "q">, Alias<emit_relocs>;
 def alias_entry_e: JoinedOrSeparate<["-"], "e">, Alias<entry>;
-def alias_entry_entry: J<"entry=">, Alias<entry>;
-def alias_error_limit: J<"error-limit=">, Alias<error_limit>;
-def alias_exclude_libs: J<"exclude-libs=">, Alias<exclude_libs>;
 def alias_export_dynamic_E: Flag<["-"], "E">, Alias<export_dynamic>;
-def alias_export_dynamic_symbol: J<"export-dynamic-symbol=">,
-  Alias<export_dynamic_symbol>;
 def alias_filter: Separate<["-"], "F">, Alias<filter>;
-def alias_fini_fini: J<"fini=">, Alias<fini>;
 def alias_format_b: S<"b">, Alias<format>;
-def alias_hash_style_hash_style: J<"hash-style=">, Alias<hash_style>;
-def alias_init_init: J<"init=">, Alias<init>;
-def alias_l__library: J<"library=">, Alias<l>;
-def alias_Map_eq: J<"Map=">, Alias<Map>;
+def alias_library: JoinedOrSeparate<["-"], "l">, Alias<library>;
+def alias_library_path: JoinedOrSeparate<["-"], "L">, Alias<library_path>;
 def alias_omagic: Flag<["-"], "N">, Alias<omagic>;
 def alias_o_output: Joined<["--"], "output=">, Alias<o>;
 def alias_o_output2 : Separate<["--"], "output">, Alias<o>;
 def alias_pie_pic_executable: F<"pic-executable">, Alias<pie>;
 def alias_print_map_M: Flag<["-"], "M">, Alias<print_map>;
 def alias_relocatable_r: Flag<["-"], "r">, Alias<relocatable>;
-def alias_reproduce_eq: J<"reproduce=">, Alias<reproduce>;
-def alias_retain_symbols_file: S<"retain-symbols-file">, Alias<retain_symbols_file>;
 def alias_rpath_R: JoinedOrSeparate<["-"], "R">, Alias<rpath>;
-def alias_rpath_rpath: J<"rpath=">, Alias<rpath>;
 def alias_script_T: JoinedOrSeparate<["-"], "T">, Alias<script>;
 def alias_shared_Bshareable: F<"Bshareable">, Alias<shared>;
 def alias_soname_h: JoinedOrSeparate<["-"], "h">, Alias<soname>;
-def alias_soname_soname: S<"soname">, Alias<soname>;
-def alias_sort_section: J<"sort-section=">, Alias<sort_section>;
-def alias_script: J<"script=">, Alias<script>;
 def alias_strip_all: Flag<["-"], "s">, Alias<strip_all>;
 def alias_strip_debug_S: Flag<["-"], "S">, Alias<strip_debug>;
-def alias_Tbss: J<"Tbss=">, Alias<Tbss>;
-def alias_Tdata: J<"Tdata=">, Alias<Tdata>;
 def alias_trace: Flag<["-"], "t">, Alias<trace>;
-def trace_trace_symbol_eq : J<"trace-symbol=">, Alias<trace_symbol>;
 def alias_trace_symbol_y : JoinedOrSeparate<["-"], "y">, Alias<trace_symbol>;
-def alias_Ttext: J<"Ttext=">, Alias<Ttext>;
 def alias_Ttext_segment: S<"Ttext-segment">, Alias<Ttext>;
 def alias_Ttext_segment_eq: J<"Ttext-segment=">, Alias<Ttext>;
-def alias_undefined_eq: J<"undefined=">, Alias<undefined>;
 def alias_undefined_u: JoinedOrSeparate<["-"], "u">, Alias<undefined>;
-def alias_version_script_eq: J<"version-script=">, Alias<version_script>;
 def alias_version_V: Flag<["-"], "V">, Alias<version>;
-def alias_wrap_wrap: J<"wrap=">, Alias<wrap>;
 
 // Our symbol resolution algorithm handles symbols in archive files differently
 // than traditional linkers, so we don't need --start-group and --end-group.
@@ -369,6 +391,8 @@ 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">,
   HelpText<"Include hotness informations in the optimization remarks file">;
+defm plugin_opt: Eq<"plugin-opt">,
+  HelpText<"specifies LTO options for compatibility with GNU linkers">;
 def save_temps: F<"save-temps">;
 def thinlto_cache_dir: J<"thinlto-cache-dir=">,
   HelpText<"Path to ThinLTO cached object file directory">;
@@ -385,18 +409,17 @@ def thinlto_jobs: J<"thinlto-jobs=">, HelpText<"Number of ThinLTO jobs">;
 // --version output.
 def plugin: S<"plugin">;
 def plugin_eq: J<"plugin=">;
-def plugin_opt: S<"plugin-opt">;
-def plugin_opt_eq: J<"plugin-opt=">;
 
 // Options listed below are silently ignored for now for compatibility.
 def allow_shlib_undefined: F<"allow-shlib-undefined">;
-def cref: Flag<["--"], "cref">;
+def cref: F<"cref">;
 def detect_odr_violations: F<"detect-odr-violations">;
 def g: Flag<["-"], "g">;
+def long_plt: F<"long-plt">;
 def no_add_needed: F<"no-add-needed">;
 def no_allow_shlib_undefined: F<"no-allow-shlib-undefined">;
-def no_copy_dt_needed_entries: F<"no-copy-dt-needed-entries">,
-  Alias<no_add_needed>;
+def no_copy_dt_needed_entries: F<"no-copy-dt-needed-entries">;
+def no_ctors_in_init_array: F<"no-ctors-in-init-array">;
 def no_keep_memory: F<"no-keep-memory">;
 def no_mmap_output_file: F<"no-mmap-output-file">;
 def no_warn_common: F<"no-warn-common">;
@@ -406,9 +429,9 @@ def rpath_link_eq: J<"rpath-link=">;
 def sort_common: F<"sort-common">;
 def stats: F<"stats">;
 def warn_execstack: F<"warn-execstack">;
+def warn_once: F<"warn-once">;
 def warn_shared_textrel: F<"warn-shared-textrel">;
 def EB : F<"EB">;
 def EL : F<"EL">;
 def G: JoinedOrSeparate<["-"], "G">;
 def Qy : F<"Qy">;
-