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Support ld.mold linker.

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gcc/ChangeLog:

	* collect2.c (main): Add ld.mold.
	* common.opt: Add -fuse-ld=mold.
	* doc/invoke.texi: Document it.
	* gcc.c (driver_handle_option): Handle -fuse-ld=mold.
	* opts.c (common_handle_option): Likewise.
This commit is contained in:
Martin Liska 2021-12-21 17:43:55 +01:00
parent 52a6b06c26
commit ad964f7eae
5 changed files with 20 additions and 3 deletions
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10
gcc/collect2.c
View File

@ -776,6 +776,7 @@ main (int argc, char **argv)
USE_GOLD_LD,
USE_BFD_LD,
USE_LLD_LD,
USE_MOLD_LD,
USE_LD_MAX
} selected_linker = USE_DEFAULT_LD;
static const char *const ld_suffixes[USE_LD_MAX] =
@ -784,7 +785,8 @@ main (int argc, char **argv)
PLUGIN_LD_SUFFIX,
"ld.gold",
"ld.bfd",
"ld.lld"
"ld.lld",
"ld.mold"
};
static const char *const real_ld_suffix = "real-ld";
static const char *const collect_ld_suffix = "collect-ld";
@ -957,6 +959,8 @@ main (int argc, char **argv)
selected_linker = USE_GOLD_LD;
else if (strcmp (argv[i], "-fuse-ld=lld") == 0)
selected_linker = USE_LLD_LD;
else if (strcmp (argv[i], "-fuse-ld=mold") == 0)
selected_linker = USE_MOLD_LD;
else if (startswith (argv[i], "-o"))
{
/* Parse the output filename if it's given so that we can make
@ -1048,7 +1052,7 @@ main (int argc, char **argv)
ld_file_name = 0;
#ifdef DEFAULT_LINKER
if (selected_linker == USE_BFD_LD || selected_linker == USE_GOLD_LD ||
selected_linker == USE_LLD_LD)
selected_linker == USE_LLD_LD || selected_linker == USE_MOLD_LD)
{
char *linker_name;
# ifdef HOST_EXECUTABLE_SUFFIX
@ -1283,7 +1287,7 @@ main (int argc, char **argv)
else if (!use_collect_ld
&& startswith (arg, "-fuse-ld="))
{
/* Do not pass -fuse-ld={bfd|gold|lld} to the linker. */
/* Do not pass -fuse-ld={bfd|gold|lld|mold} to the linker. */
ld1--;
ld2--;
}

4
gcc/common.opt
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@ -3046,6 +3046,10 @@ fuse-ld=lld
Common Driver Negative(fuse-ld=lld)
Use the lld LLVM linker instead of the default linker.
fuse-ld=mold
Common Driver Negative(fuse-ld=mold)
Use the Modern linker (MOLD) linker instead of the default linker.
fuse-linker-plugin
Common Undocumented Var(flag_use_linker_plugin)

4
gcc/doc/invoke.texi
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@ -16266,6 +16266,10 @@ Use the @command{gold} linker instead of the default linker.
@opindex fuse-ld=lld
Use the LLVM @command{lld} linker instead of the default linker.
@item -fuse-ld=mold
@opindex fuse-ld=mold
Use the Modern Linker (@command{mold}) instead of the default linker.
@cindex Libraries
@item -l@var{library}
@itemx -l @var{library}

4
gcc/gcc.c
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@ -4282,6 +4282,10 @@ driver_handle_option (struct gcc_options *opts,
use_ld = ".gold";
break;
case OPT_fuse_ld_mold:
use_ld = ".mold";
break;
case OPT_fcompare_debug_second:
compare_debug_second = 1;
break;

1
gcc/opts.c
View File

@ -3105,6 +3105,7 @@ common_handle_option (struct gcc_options *opts,
case OPT_fuse_ld_bfd:
case OPT_fuse_ld_gold:
case OPT_fuse_ld_lld:
case OPT_fuse_ld_mold:
case OPT_fuse_linker_plugin:
/* No-op. Used by the driver and passed to us because it starts with f.*/
break;