/* Target hook definitions.
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
- 2011
+ 2011, 2012
Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
section *, (tree decl),
default_function_rodata_section)
+/* Nonnull if the target wants to override the default ".rodata" prefix
+ for mergeable data sections. */
+DEFHOOKPOD
+(mergeable_rodata_prefix,
+ "Usually, the compiler uses the prefix @code{\".rodata\"} to construct\n\
+section names for mergeable constant data. Define this macro to override\n\
+the string if a different section name should be used.",
+ const char *, ".rodata")
+
+/* Return the section to be used for transactional memory clone tables. */
+DEFHOOK
+(tm_clone_table_section,
+ "Return the section that should be used for transactional memory clone\
+ tables.",
+ section *, (void), default_clone_table_section)
+
/* Output a constructor for a symbol with a given priority. */
DEFHOOK
(constructor,
(output_addr_const_extra,
"",
bool, (FILE *file, rtx x),
- default_asm_output_addr_const_extra)
+ hook_bool_FILEptr_rtx_false)
/* ??? The TARGET_PRINT_OPERAND* hooks are part of the asm_out struct,
even though that is not reflected in the macro name to override their
also the latencies of operations.",
bool, false)
+/* The following member value is a function that returns number
+ of operations reassociator should try to put in parallel for
+ statements of the given type. By default 1 is used. */
+DEFHOOK
+(reassociation_width,
+"This hook is called by tree reassociator to determine a level of\n\
+parallelism required in output calculations chain.",
+int, (unsigned int opc, enum machine_mode mode),
+hook_int_uint_mode_1)
+
HOOK_VECTOR_END (sched)
/* Functions relating to vectorization. */
bool, (const_tree type, bool is_packed),
default_builtin_vector_alignment_reachable)
-/* Target builtin that implements vector permute. */
+/* Return true if a vector created for vec_perm_const is valid.
+ A NULL indicates that all constants are valid permutations. */
DEFHOOK
-(builtin_vec_perm,
+(vec_perm_const_ok,
"",
- tree, (tree type, tree *mask_element_type), NULL)
-
-/* Return true if a vector created for builtin_vec_perm is valid. */
-DEFHOOK
-(builtin_vec_perm_ok,
- "",
- bool, (tree vec_type, tree mask),
- hook_bool_tree_tree_true)
+ bool, (enum machine_mode, const unsigned char *sel),
+ NULL)
/* Return true if the target supports misaligned store/load of a
specific factor denoted in the third parameter. The last parameter
(enum machine_mode mode, const_tree type, int misalignment, bool is_packed),
default_builtin_support_vector_misalignment)
+/* Return the builtin decl needed to load a vector of TYPE. */
+DEFHOOK
+(builtin_tm_load,
+ "This hook should return the built-in decl needed to load a vector of the "
+ "given type within a transaction.",
+ tree,
+ (tree),
+ default_builtin_tm_load_store)
+
+/* Return the builtin decl needed to store a vector of TYPE. */
+DEFHOOK
+(builtin_tm_store,
+ "This hook should return the built-in decl needed to store a vector of the "
+ "given type within a transaction.",
+ tree,
+ (tree),
+ default_builtin_tm_load_store)
+
/* Returns the preferred mode for SIMD operations for the specified
scalar mode. */
DEFHOOK
(void),
default_autovectorize_vector_sizes)
+/* Target builtin that implements vector gather operation. */
+DEFHOOK
+(builtin_gather,
+ "",
+ tree,
+ (const_tree mem_vectype, const_tree index_type, int scale),
+ NULL)
+
HOOK_VECTOR_END (vectorize)
#undef HOOK_PREFIX
#define HOOK_PREFIX "TARGET_"
-/* The initial value of target_flags. */
-DEFHOOKPOD
-(default_target_flags,
- "",
- int, 0)
-
/* Allow target specific overriding of option settings after options have
been changed by an attribute or pragma or when it is reset at the
end of the code affected by an attribute or pragma. */
void, (void),
hook_void_void)
-/* Handle target switch DECODED for options structures OPTS and
- OPTS_SET, at location LOC. Return true if the switch was valid. */
-DEFHOOK
-(handle_option,
- "",
- bool, (struct gcc_options *opts, struct gcc_options *opts_set,
- const struct cl_decoded_option *decoded,
- unsigned int /*location_t*/ loc),
- default_target_handle_option)
-
-/* Display extra, target specific information in response to a
- --target-help switch. */
-DEFHOOK
-(help,
- "",
- void, (void), NULL)
-
DEFHOOK_UNDOC
(eh_return_filter_mode,
"Return machine mode for filter value.",
rtx, (rtx x),
delegitimize_mem_from_attrs)
+/* Given an RTX, return true if it is not ok to emit it into debug info
+ section. */
+DEFHOOK
+(const_not_ok_for_debug_p,
+ "",
+ bool, (rtx x),
+ hook_bool_rtx_false)
+
/* Given an address RTX, say whether it is valid. */
DEFHOOK
(legitimate_address_p,
DEFHOOK
(subset_p,
"",
- bool, (addr_space_t superset, addr_space_t subset),
+ bool, (addr_space_t subset, addr_space_t superset),
default_addr_space_subset_p)
/* Function to convert an rtl expression from one address space to another. */
DEFHOOK
(rtx_costs,
"",
- bool, (rtx x, int code, int outer_code, int *total, bool speed),
- hook_bool_rtx_int_int_intp_bool_false)
+ bool, (rtx x, int code, int outer_code, int opno, int *total, bool speed),
+ hook_bool_rtx_int_int_int_intp_bool_false)
/* Compute the cost of X, used as an address. Never called with
invalid addresses. */
const char *, (const void *data, size_t sz),
default_pch_valid_p)
+DEFHOOK
+(prepare_pch_save,
+ "Called before writing out a PCH file. If the target has some\n\
+garbage-collected data that needs to be in a particular state on PCH loads,\n\
+it can use this hook to enforce that state. Very few targets need\n\
+to do anything here.",
+ void, (void),
+ hook_void_void)
+
/* If nonnull, this function checks whether a PCH file with the
given set of target flags can be used. It returns NULL if so,
otherwise it returns an error message. */
tree, (void),
default_external_stack_protect_fail)
-DEFHOOK
-(supports_split_stack,
- "Whether this target supports splitting the stack when the options\
- described in @var{opts} have been passed. This is called\
- after options have been parsed, so the target may reject splitting\
- the stack in some configurations. The default version of this hook\
- returns false. If @var{report} is true, this function may issue a warning\
- or error; if @var{report} is false, it must simply return a value",
- bool, (bool report, struct gcc_options *opts),
- hook_bool_bool_gcc_optionsp_false)
-
/* Returns NULL if target supports the insn within a doloop block,
otherwise it returns an error message. */
DEFHOOK
(pass_by_reference,
"",
bool,
- (CUMULATIVE_ARGS *cum, enum machine_mode mode, const_tree type, bool named),
+ (cumulative_args_t cum, enum machine_mode mode, const_tree type, bool named),
hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false)
DEFHOOK
DEFHOOK
(setup_incoming_varargs,
"",
- void, (CUMULATIVE_ARGS *args_so_far, enum machine_mode mode, tree type,
+ void, (cumulative_args_t args_so_far, enum machine_mode mode, tree type,
int *pretend_args_size, int second_time),
default_setup_incoming_varargs)
DEFHOOK
(strict_argument_naming,
"",
- bool, (CUMULATIVE_ARGS *ca),
+ bool, (cumulative_args_t ca),
hook_bool_CUMULATIVE_ARGS_false)
/* Returns true if we should use
DEFHOOK
(pretend_outgoing_varargs_named,
"",
- bool, (CUMULATIVE_ARGS *ca),
+ bool, (cumulative_args_t ca),
default_pretend_outgoing_varargs_named)
/* Given a complex type T, return true if a parameter of type T
(callee_copies,
"",
bool,
- (CUMULATIVE_ARGS *cum, enum machine_mode mode, const_tree type, bool named),
+ (cumulative_args_t cum, enum machine_mode mode, const_tree type, bool named),
hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false)
/* Return zero for arguments passed entirely on the stack or entirely
DEFHOOK
(arg_partial_bytes,
"",
- int, (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type, bool named),
+ int, (cumulative_args_t cum, enum machine_mode mode, tree type, bool named),
hook_int_CUMULATIVE_ARGS_mode_tree_bool_0)
/* Update the state in CA to advance past an argument in the
(function_arg_advance,
"",
void,
- (CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type, bool named),
+ (cumulative_args_t ca, enum machine_mode mode, const_tree type, bool named),
default_function_arg_advance)
/* Return zero if the argument described by the state of CA should
DEFHOOK
(function_arg,
"",
- rtx, (CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type,
+ rtx, (cumulative_args_t ca, enum machine_mode mode, const_tree type,
bool named),
default_function_arg)
DEFHOOK
(function_incoming_arg,
"",
- rtx, (CUMULATIVE_ARGS *ca, enum machine_mode mode, const_tree type,
+ rtx, (cumulative_args_t ca, enum machine_mode mode, const_tree type,
bool named),
default_function_incoming_arg)
unsigned int, (enum machine_mode mode, const_tree type),
default_function_arg_boundary)
+DEFHOOK
+(function_arg_round_boundary,
+ "Normally, the size of an argument is rounded up to @code{PARM_BOUNDARY},\n\
+which is the default value for this hook. You can define this hook to\n\
+return a different value if an argument size must be rounded to a larger\n\
+value.",
+ unsigned int, (enum machine_mode mode, const_tree type),
+ default_function_arg_round_boundary)
+
/* Return the diagnostic message string if function without a prototype
is not allowed for this 'val' argument; NULL otherwise. */
DEFHOOK
bool, (reg_class_t rclass),
default_class_likely_spilled_p)
+/* Return the maximum number of consecutive registers
+ needed to represent mode MODE in a register of class RCLASS. */
+DEFHOOK
+(class_max_nregs,
+ "",
+ unsigned char, (reg_class_t rclass, enum machine_mode mode),
+ default_class_max_nregs)
+
DEFHOOK
(preferred_rename_class,
"A target hook that places additional preference on the register\
void, (tree type),
hook_void_tree)
+DEFHOOK
+(decl_mangling_context,
+ "Return target-specific mangling context of @var{decl} or @code{NULL_TREE}.",
+ tree, (const_tree decl),
+ hook_tree_const_tree_null)
+
HOOK_VECTOR_END (cxx)
/* Functions and data for emulated TLS support. */
void, (void),
hook_void_void)
-/* Set default optimizations for the target. */
-DEFHOOKPOD
-(optimization_table,
- "",
- const struct default_options *, empty_optimization_table)
-
-DEFHOOK
-(default_params,
-"Set target-dependent default values for @option{--param} settings, using\
- calls to @code{set_default_param_value}.",
- void, (void),
- hook_void_void)
-
-DEFHOOK
-(init_struct,
-"Set target-dependent initial values of fields in @var{opts}.",
- void, (struct gcc_options *opts),
- hook_void_gcc_optionsp)
-
/* Function to determine if one function can inline another function. */
#undef HOOK_PREFIX
#define HOOK_PREFIX "TARGET_"
void, (bitmap regs),
hook_void_bitmap)
+/* Fill in additional registers set up by prologue into a regset. */
+DEFHOOK
+(set_up_by_prologue,
+ "This hook should add additional registers that are computed by the prologue\
+ to the hard regset for shrink-wrapping optimization purposes.",
+ void, (struct hard_reg_set_container *),
+ NULL)
+
/* Determine the type of unwind info to emit for debugging. */
DEFHOOK
(debug_unwind_info,
enum unwind_info_type, (void),
default_debug_unwind_info)
-/* Determine the type of unwind info to emit for exceptions. */
-DEFHOOK
-(except_unwind_info,
- "",
- enum unwind_info_type, (struct gcc_options *opts),
- default_except_unwind_info)
-
-/* Leave the boolean fields at the end. */
-
-/* True if unwinding tables should be generated by default. */
-DEFHOOKPOD
-(unwind_tables_default,
- "",
- bool, false)
-
-/* True if arbitrary sections are supported. */
DEFHOOKPOD
-(have_named_sections,
- "",
- bool, false)
+(atomic_test_and_set_trueval,
+ "This value should be set if the result written by\
+ @code{atomic_test_and_set} is not exactly 1, i.e. the\
+ @code{bool} @code{true}.",
+ unsigned char, 1)
+
+/* Leave the boolean fields at the end. */
/* True if we can create zeroed data by switching to a BSS section
and then using ASM_OUTPUT_SKIP to allocate the space. */
in particular GDB does not use them.",
bool, false)
+DEFHOOKPOD
+(delay_sched2, "True if sched2 is not to be run at its normal place. \
+This usually means it will be run as part of machine-specific reorg.",
+bool, false)
+
+DEFHOOKPOD
+(delay_vartrack, "True if vartrack is not to be run at its normal place. \
+This usually means it will be run as part of machine-specific reorg.",
+bool, false)
+
/* Leave the boolean fields at the end. */
/* Close the 'struct gcc_target' definition. */
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