#include <libcore/lc_opts.h>
#endif
+#include "type.h"
+
#include "irnode.h"
#include "irmode.h"
#include "ident.h"
#include "belistsched.h"
+#include "beabi_t.h"
typedef struct _arch_register_class_t arch_register_class_t;
typedef struct _arch_register_t arch_register_t;
typedef enum _arch_register_type_t {
arch_register_type_none = 0,
- arch_register_type_caller_saved, /**< The register must be saved by the caller
- upon a function call. It thus can be overwritten
- in the called function. */
- arch_register_type_callee_saved, /**< The register must be saved by the called function,
- it thus survives a function call. */
- arch_register_type_ignore /**< Do not consider this register when allocating. */
+ arch_register_type_caller_save = 1, /**< The register must be saved by the caller
+ upon a function call. It thus can be overwritten
+ in the called function. */
+ arch_register_type_callee_save = 2, /**< The register must be saved by the caller
+ upon a function call. It thus can be overwritten
+ in the called function. */
+ arch_register_type_ignore = 4, /**< Do not consider this register when allocating. */
+ arch_register_type_sp = 8, /**< This register is the stack pointer of the architecture. */
+ arch_register_type_bp = 16, /**< The register is the base pointer of the architecture. */
} arch_register_type_t;
/**
struct _arch_register_class_t {
const char *name; /**< The name of the register class. */
int n_regs; /**< Number of registers in this class. */
+ ir_mode *mode; /**< The mode of the register class. */
const arch_register_t *regs; /**< The array of registers. */
};
arch_register_req_type_t type; /**< The type of the constraint. */
const arch_register_class_t *cls; /**< The register class this constraint belongs to. */
- void (*limited)(const ir_node *irn, int pos, bitset_t *bs);
+ void (*limited)(void *limited_env, bitset_t *bs);
/**< In case of the 'limited'
constraint, this function
must put all allowable
return the number of registers
in the bitset. */
- ir_node *other; /**< In case of "should be equal"
- or should be different, this gives
- the node to whose register this
- one's should be the same/different. */
+ void *limited_env; /**< This must passed to limited. */
+
+ ir_node *other_same; /**< The other which shall have the same reg
+ as this one. (for case should_be_same). */
+
+ ir_node *other_different; /**< The other node from which this one's register
+ must be different (case must_be_different). */
} arch_register_req_t;
/**
* Some flags describing a node in more detail.
*/
typedef enum _arch_irn_flags_t {
- arch_irn_flags_dont_spill = 1, /**< This must not be spilled. */
- arch_irn_flags_rematerializable = 2, /**< This should be replicated instead of spilled/reloaded. */
- arch_irn_flags_ignore = 4, /**< Do not consider the node during register allocation. */
+ arch_irn_flags_none = 0, /**< Node flags. */
+ arch_irn_flags_dont_spill = 1, /**< This must not be spilled. */
+ arch_irn_flags_rematerializable = 2, /**< This should be replicated instead of spilled/reloaded. */
+ arch_irn_flags_ignore = 4, /**< Do not consider the node during register allocation. */
} arch_irn_flags_t;
struct _arch_irn_ops_if_t {
*/
arch_irn_flags_t (*get_flags)(const void *self, const ir_node *irn);
+ /**
+ * Check, if a node modifies the stack pointer by a constant.
+ * @param self The this pointer.
+ * @param irn The node in question.
+ * @return The (constant) amount by which the stack pointer is modifies
+ * by this node. Return 0, if irn does not touch the stack pointer.
+ * <tt>-n</tt> if the node modifies the sp by n against the stack's growing
+ * direction and <tt>n</tt> if irn modifies the stack by n along the stack's
+ * growing direction.
+ */
+ int (*modifies_sp)(const void *self, const ir_node *irn);
+
+ /**
+ * Set a bias for the stack pointer.
+ * If the node in question uses the stack pointer for indexing, it must
+ * consider the value of <code>bias</code> additionally.
+ * @param self The this pointer.
+ * @param irn The node in question.
+ * @param bias The bias.
+ */
+ void (*set_stack_bias)(const void *self, ir_node *irn, int bias);
};
/**
* @param env The environment.
* @param irn The node.
* @param pos The postition of the node's operand.
- * @param cls The register class.
* @param bs The bitset all allocatable registers shall be put into.
* Note, that you can also pass NULL here. If you don't,
* make sure, the bitset is as large as the register class
* has registers.
* @return The amount of registers allocatable for that operand.
*/
-extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn,
- int pos, const arch_register_class_t *cls, bitset_t *bs);
+extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs);
+
+/**
+ * Put all registers which shall not be ignored by the register
+ * allocator in a bit set.
+ * @param env The arch env.
+ * @param cls The register class to consider.
+ * @param bs The bit set to put the registers to.
+ */
+extern void arch_put_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls, bitset_t *bs);
/**
* Check, if a register is assignable to an operand of a node.
*/
extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn);
-#define arch_irn_is_ignore(env, irn) \
- (arch_irn_get_flags(env, irn) == arch_irn_flags_ignore)
+#define arch_irn_is_ignore(env, irn) ((arch_irn_get_flags(env, irn) & arch_irn_flags_ignore) != 0)
#define arch_irn_has_reg_class(env, irn, pos, cls) \
((cls) == arch_get_irn_reg_class(env, irn, pos))
/**
* Called after register allocation to lower Spills to Stores
+ * @param self The code generator
+ * @param spill The spill node to lower
+ * @return The new backend node which substitutes the spill
*/
ir_node *(*lower_spill)(void *self, ir_node *spill);
/**
* Called after register allocation to lower Reloads to Loads
+ * @param self The code generator
+ * @param reload The reload node to lower
+ * @return The new backend node which substitutes the reload
*/
ir_node *(*lower_reload)(void *self, ir_node *reload);
*/
struct _arch_isa_t {
const arch_isa_if_t *impl;
+ const arch_register_t *sp; /** The stack pointer register. */
+ const arch_register_t *bp; /** The base pointer register. */
+ const int stack_dir; /** -1 for decreasing, 1 for increasing. */
};
+#define arch_isa_stack_dir(isa) ((isa)->stack_dir)
+#define arch_isa_sp(isa) ((isa)->sp)
+#define arch_isa_bp(isa) ((isa)->bp)
+
/**
* Architecture interface.
*/
*/
const arch_register_class_t *(*get_reg_class)(const void *self, int i);
+ /**
+ * Get the register class which shall be used to store a value of a given mode.
+ * @param self The this pointer.
+ * @param mode The mode in question.
+ * @return A register class which can hold values of the given mode.
+ */
+ const arch_register_class_t *(*get_reg_class_for_mode)(const void *self, const ir_mode *mode);
+
+ /**
+ * Get the ABI restrictions for procedure calls.
+ * @param self The this pointer.
+ * @param method_type The type of the method (procedure) in question.
+ * @param p The array of parameter locations to be filled.
+ */
+ void (*get_call_abi)(const void *self, ir_type *method_type, be_abi_call_t *abi);
+
/**
* The irn handler for this architecture.
* The irn handler is registered by the Firm back end
const list_sched_selector_t *(*get_list_sched_selector)(const void *self);
/**
- * Get the proj number assigned to the register.
- * @param self The isa object.
- * @param reg The register
- * @return The proj number assigned to this register
+ * Take a proj from a call, set the correct register and projnum for this proj
+ * @param self The isa object.
+ * @param proj The proj
+ * @param is_keep Non-zero if proj is a Keep argument
+ * @return The backend proj number assigned to this proj
*/
- long (*get_projnum_for_register)(const void *self, const arch_register_t *reg);
+ long (*handle_call_proj)(const void *self, ir_node *proj, int is_keep);
};
-#define arch_isa_get_n_reg_class(isa) ((isa)->impl->get_n_reg_class(isa))
-#define arch_isa_get_reg_class(isa,i) ((isa)->impl->get_reg_class(isa, i))
-#define arch_isa_get_irn_handler(isa) ((isa)->impl->get_irn_handler(isa))
-#define arch_isa_make_code_generator(isa,irg) ((isa)->impl->make_code_generator(isa, irg))
+#define arch_isa_get_n_reg_class(isa) ((isa)->impl->get_n_reg_class(isa))
+#define arch_isa_get_reg_class(isa,i) ((isa)->impl->get_reg_class(isa, i))
+#define arch_isa_get_irn_handler(isa) ((isa)->impl->get_irn_handler(isa))
+#define arch_isa_get_call_abi(isa,tp,abi) ((isa)->impl->get_call_abi((isa), (tp), (abi)))
+#define arch_isa_get_reg_class_for_mode(isa,mode) ((isa)->impl->get_reg_class_for_mode((isa), (mode)))
+#define arch_isa_make_code_generator(isa,irg) ((isa)->impl->make_code_generator(isa, irg))
#define ARCH_MAX_HANDLERS 8
* @param handler A node handler.
* @return The environment itself.
*/
-extern arch_env_t *arch_env_add_irn_handler(arch_env_t *env,
- const arch_irn_handler_t *handler);
+extern arch_env_t *arch_env_add_irn_handler(arch_env_t *env, const arch_irn_handler_t *handler);
#endif /* _FIRM_BEARCH_H */
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