@@ -84,6 +84,31 @@ DEFHOOK
vec<const char *>, (int option_code, const char *prefix),
default_get_valid_option_values)
+DEFHOOK
+(compute_multilib,
+ "Some target like RISC-V might have complicated multilib reuse rule which is\
+ hard to implemented on current multilib scheme, this hook allow target to\
+ override the result from built-in multilib mechanism.\
+ @var{switches} is the raw option list with @var{n_switches} items;\
+ @var{multilib_dir} is the multi-lib result which compute by the built-in\
+ multi-lib mechanism;\
+ @var{multilib_defaults} is the default options list for multi-lib; \
+ @var{multilib_select} is the string contain the list of supported multi-lib, \
+ and the option checking list. \
+ @var{multilib_matches}, @var{multilib_exclusions}, and @var{multilib_reuse} \
+ are corresponding to @var{MULTILIB_MATCHES}, @var{MULTILIB_EXCLUSIONS} \
+ @var{MULTILIB_REUSE}. \
+ The default definition does nothing but return @var{multilib_dir} directly.",
+ const char *, (const struct switchstr *switches,
+ int n_switches,
+ const char *multilib_dir,
+ const char *multilib_defaults,
+ const char *multilib_select,
+ const char *multilib_matches,
+ const char *multilib_exclusions,
+ const char *multilib_reuse),
+ default_compute_multilib)
+
/* Leave the boolean fields at the end. */
/* True if unwinding tables should be generated by default. */
@@ -90,3 +90,18 @@ const struct default_options empty_optimization_table[] =
{
{ OPT_LEVELS_NONE, 0, NULL, 0 }
};
+
+/* Default version of TARGET_COMPUTE_MULTILIB. */
+const char *
+default_compute_multilib(
+ const struct switchstr *,
+ int,
+ const char *multilib,
+ const char *,
+ const char *,
+ const char *,
+ const char *,
+ const char *)
+{
+ return multilib;
+}
@@ -758,6 +758,11 @@ options are changed via @code{#pragma GCC optimize} or by using the
Set target-dependent initial values of fields in @var{opts}.
@end deftypefn
+@deftypefn {Common Target Hook} {const char *} TARGET_COMPUTE_MULTILIB (const struct switchstr *@var{switches}, int @var{n_switches}, const char *@var{multilib_dir}, const char *@var{multilib_defaults}, const char *@var{multilib_select}, const char *@var{multilib_matches}, const char *@var{multilib_exclusions}, const char *@var{multilib_reuse})
+Some target like RISC-V might have complicated multilib reuse rule which is hard to implemented on current multilib scheme, this hook allow target to override the result from built-in multilib mechanism. @var{switches} is the raw option list with @var{n_switches} items; @var{multilib_dir} is the multi-lib result which compute by the built-in multi-lib mechanism; @var{multilib_defaults} is the default options list for multi-lib; @var{multilib_select} is the string contain the list of supported multi-lib, and the option checking list. @var{multilib_matches}, @var{multilib_exclusions}, and @var{multilib_reuse} are corresponding to @var{MULTILIB_MATCHES}, @var{MULTILIB_EXCLUSIONS} @var{MULTILIB_REUSE}. The default definition does nothing but return @var{multilib_dir} directly.
+@end deftypefn
+
+
@defmac SWITCHABLE_TARGET
Some targets need to switch between substantially different subtargets
during compilation. For example, the MIPS target has one subtarget for
@@ -736,6 +736,9 @@ options are changed via @code{#pragma GCC optimize} or by using the
@hook TARGET_OPTION_INIT_STRUCT
+@hook TARGET_COMPUTE_MULTILIB
+
+
@defmac SWITCHABLE_TARGET
Some targets need to switch between substantially different subtargets
during compilation. For example, the MIPS target has one subtarget for
@@ -43,6 +43,7 @@ compilation is specified by a string called a "spec". */
#include "opts.h"
#include "filenames.h"
#include "spellcheck.h"
+#include "common/common-target.h"
@@ -3535,42 +3536,6 @@ execute (void)
}
}
-/* Find all the switches given to us
- and make a vector describing them.
- The elements of the vector are strings, one per switch given.
- If a switch uses following arguments, then the `part1' field
- is the switch itself and the `args' field
- is a null-terminated vector containing the following arguments.
- Bits in the `live_cond' field are:
- SWITCH_LIVE to indicate this switch is true in a conditional spec.
- SWITCH_FALSE to indicate this switch is overridden by a later switch.
- SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
- SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored.
- SWITCH_KEEP_FOR_GCC to indicate that this switch, otherwise ignored,
- should be included in COLLECT_GCC_OPTIONS.
- in all do_spec calls afterwards. Used for %<S from self specs.
- The `known' field describes whether this is an internal switch.
- The `validated' field describes whether any spec has looked at this switch;
- if it remains false at the end of the run, the switch must be meaningless.
- The `ordering' field is used to temporarily mark switches that have to be
- kept in a specific order. */
-
-#define SWITCH_LIVE (1 << 0)
-#define SWITCH_FALSE (1 << 1)
-#define SWITCH_IGNORE (1 << 2)
-#define SWITCH_IGNORE_PERMANENTLY (1 << 3)
-#define SWITCH_KEEP_FOR_GCC (1 << 4)
-
-struct switchstr
-{
- const char *part1;
- const char **args;
- unsigned int live_cond;
- bool known;
- bool validated;
- bool ordering;
-};
-
static struct switchstr *switches;
static int n_switches;
@@ -9749,6 +9714,17 @@ set_multilib_dir (void)
++p;
}
+ multilib_dir =
+ targetm_common.compute_multilib (
+ switches,
+ n_switches,
+ multilib_dir,
+ multilib_defaults,
+ multilib_select,
+ multilib_matches,
+ multilib_exclusions,
+ multilib_reuse);
+
if (multilib_dir == NULL && multilib_os_dir != NULL
&& strcmp (multilib_os_dir, ".") == 0)
{
@@ -492,4 +492,40 @@ extern void prepend_xassembler_to_collect_as_options (const char *, obstack *);
} \
while (false)
+/* Find all the switches given to us
+ and make a vector describing them.
+ The elements of the vector are strings, one per switch given.
+ If a switch uses following arguments, then the `part1' field
+ is the switch itself and the `args' field
+ is a null-terminated vector containing the following arguments.
+ Bits in the `live_cond' field are:
+ SWITCH_LIVE to indicate this switch is true in a conditional spec.
+ SWITCH_FALSE to indicate this switch is overridden by a later switch.
+ SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
+ SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored.
+ SWITCH_KEEP_FOR_GCC to indicate that this switch, otherwise ignored,
+ should be included in COLLECT_GCC_OPTIONS.
+ in all do_spec calls afterwards. Used for %<S from self specs.
+ The `known' field describes whether this is an internal switch.
+ The `validated' field describes whether any spec has looked at this switch;
+ if it remains false at the end of the run, the switch must be meaningless.
+ The `ordering' field is used to temporarily mark switches that have to be
+ kept in a specific order. */
+
+#define SWITCH_LIVE (1 << 0)
+#define SWITCH_FALSE (1 << 1)
+#define SWITCH_IGNORE (1 << 2)
+#define SWITCH_IGNORE_PERMANENTLY (1 << 3)
+#define SWITCH_KEEP_FOR_GCC (1 << 4)
+
+struct switchstr
+{
+ const char *part1;
+ const char **args;
+ unsigned int live_cond;
+ bool known;
+ bool validated;
+ bool ordering;
+};
+
#endif