void arch_dump_register_reqs(FILE *F, const ir_node *node);
void arch_dump_reqs_and_registers(FILE *F, const ir_node *node);
-/**
- * Node classification. Used for statistics and for detecting reload nodes.
- */
-typedef enum arch_irn_class_t {
- arch_irn_class_none = 0,
- arch_irn_class_spill = 1 << 0,
- arch_irn_class_reload = 1 << 1,
- arch_irn_class_remat = 1 << 2,
- arch_irn_class_copy = 1 << 3,
- arch_irn_class_perm = 1 << 4
-} arch_irn_class_t;
-ENUM_BITSET(arch_irn_class_t)
-
void arch_set_frame_offset(ir_node *irn, int bias);
ir_entity *arch_get_frame_entity(const ir_node *irn);
}
/**
- * Classify a node.
- * @param irn The node.
- * @return A classification of the node.
- */
-arch_irn_class_t arch_irn_classify(const ir_node *irn);
-
-/**
- * Initialize the architecture environment struct.
- * @param isa The isa which shall be put into the environment.
- * @param file_handle The file handle
- * @return The environment.
+ * Start codegeneration
*/
-extern arch_env_t *arch_env_init(const arch_isa_if_t *isa,
- be_main_env_t *main_env);
+arch_env_t *arch_env_begin_codegeneration(const arch_isa_if_t *isa,
+ be_main_env_t *main_env);
/**
* Register an instruction set architecture
const arch_register_class_t *reg_class; /**< The class of the register */
unsigned short index; /**< The index of the register in
the class. */
- unsigned short global_index; /** The global index this register
- in the architecture. */
+ unsigned short global_index; /**< The global index this
+ register in the architecture. */
arch_register_type_t type; /**< The type of the register. */
/** register constraint allowing just this register */
const arch_register_req_t *single_req;
+ /** register number in dwarf debugging format */
+ unsigned short dwarf_number;
};
static inline const arch_register_class_t *arch_register_get_class(
arch_register_req_type_t type; /**< The type of the constraint. */
const arch_register_class_t *cls; /**< The register class this constraint
belongs to. */
- const unsigned *limited; /**< allowed register bitset */
- unsigned other_same; /**< Bitmask of ins which should use the
- same register (should_be_same). */
- unsigned other_different; /**< Bitmask of ins which shall use a
- different register
- (must_be_different) */
- unsigned char width; /**< specifies how many sequential
- registers are required */
+ const unsigned *limited; /**< allowed register bitset
+ (in case of wide-values this is
+ only about the first register) */
+ unsigned other_same; /**< Bitmask of ins which should use the
+ same register (should_be_same). */
+ unsigned other_different; /**< Bitmask of ins which shall use a
+ different register
+ (must_be_different) */
+ unsigned char width; /**< specifies how many sequential
+ registers are required */
};
static inline bool reg_reqs_equal(const arch_register_req_t *req1,
struct arch_irn_ops_t {
- /**
- * Classify the node.
- * @param irn The node.
- * @return A classification.
- */
- arch_irn_class_t (*classify)(const ir_node *irn);
-
/**
* Get the entity on the stack frame this node depends on.
* @param irn The node in question.
*/
struct arch_isa_if_t {
/**
- * Initialize the isa interface.
- * @param file_handle the file handle to write the output to
- * @return a new isa instance
+ * Initializes the isa interface. This is necessary before calling any
+ * other functions from this interface.
+ */
+ void (*init)(void);
+
+ /**
+ * Fress resources allocated by this isa interface.
*/
- arch_env_t *(*init)(const be_main_env_t *env);
+ void (*finish)(void);
+
+ /**
+ * Returns the frontend settings needed for this backend.
+ */
+ const backend_params *(*get_params)(void);
/**
* lowers current program for target. See the documentation for
*/
void (*lower_for_target)(void);
+ /**
+ * parse an assembler constraint part and set flags according to its nature
+ * advances the *c pointer to point to the last parsed character (so if you
+ * parse a single character don't advance c)
+ */
+ asm_constraint_flags_t (*parse_asm_constraint)(const char **c);
+
+ /**
+ * returns true if the string is a valid clobbered (register) in this
+ * backend
+ */
+ int (*is_valid_clobber)(const char *clobber);
+
+ /**
+ * Start codegeneration
+ * @return a new isa instance
+ */
+ arch_env_t *(*begin_codegeneration)(const be_main_env_t *env);
+
/**
* Free the isa instance.
*/
- void (*done)(void *self);
+ void (*end_codegeneration)(void *self);
/**
- * Called directly after initialization. Backend should handle all
- * intrinsics here.
+ * Initialize the code generator for a graph
+ * @param irg A graph
*/
- void (*handle_intrinsics)(void);
+ void (*init_graph)(ir_graph *irg);
/**
* Get the ABI restrictions for procedure calls.
void (*get_call_abi)(ir_type *call_type, be_abi_call_t *abi);
/**
- * A "static" function, returns the frontend settings
- * needed for this backend.
+ * mark node as rematerialized
*/
- const backend_params *(*get_params)(void);
+ void (*mark_remat)(ir_node *node);
/**
- * mark node as rematerialized
+ * return node used as base in pic code addresses
*/
- void (*mark_remat)(ir_node *node);
+ ir_node* (*get_pic_base)(ir_graph *irg);
/**
- * parse an assembler constraint part and set flags according to its nature
- * advances the *c pointer to point to the last parsed character (so if you
- * parse a single character don't advance c)
+ * Create a spill instruction. We assume that spill instructions
+ * do not need any additional registers and do not affect cpu-flags in any
+ * way.
+ * Construct a sequence of instructions after @p after (the resulting nodes
+ * are already scheduled).
+ * Returns a mode_M value which is used as input for a reload instruction.
*/
- asm_constraint_flags_t (*parse_asm_constraint)(const char **c);
+ ir_node *(*new_spill)(ir_node *value, ir_node *after);
/**
- * returns true if the string is a valid clobbered (register) in this
- * backend
+ * Create a reload instruction. We assume that reload instructions do not
+ * need any additional registers and do not affect cpu-flags in any way.
+ * Constructs a sequence of instruction before @p before (the resulting
+ * nodes are already scheduled). A rewiring of users is not performed in
+ * this function.
+ * Returns a value representing the restored value.
*/
- int (*is_valid_clobber)(const char *clobber);
+ ir_node *(*new_reload)(ir_node *value, ir_node *spilled_value,
+ ir_node *before);
/**
- * Initialize the code generator.
- * @param irg A graph
- * @return A newly created code generator.
+ * Checks if the given register is callee/caller saved.
+ * @deprecated, only necessary if backend still uses beabi functions
*/
- void (*init_graph)(ir_graph *irg);
+ int (*register_saved_by)(const arch_register_t *reg, int callee);
/**
- * return node used as base in pic code addresses
+ * Called directly after initialization. Backend should handle all
+ * intrinsics here.
*/
- ir_node* (*get_pic_base)(ir_graph *irg);
+ void (*handle_intrinsics)(void);
/**
* Called before abi introduce.
* Called directly before done is called. This should be the last place
* where the irg is modified.
*/
- void (*finish)(ir_graph *irg);
+ void (*finish_graph)(ir_graph *irg);
/**
* Called after everything happened. This call should emit the final
* assembly code but avoid changing the irg.
- * The code generator must also be de-allocated here.
*/
void (*emit)(ir_graph *irg);
-
- /**
- * Checks if the given register is callee/caller saved.
- * @deprecated, only necessary if backend still uses beabi functions
- */
- int (*register_saved_by)(const arch_register_t *reg, int callee);
-
- /**
- * Create a spill instruction. We assume that spill instructions
- * do not need any additional registers and do not affect cpu-flags in any
- * way.
- * Construct a sequence of instructions after @p after (the resulting nodes
- * are already scheduled).
- * Returns a mode_M value which is used as input for a reload instruction.
- */
- ir_node *(*new_spill)(ir_node *value, ir_node *after);
-
- /**
- * Create a reload instruction. We assume that reload instructions do not
- * need any additional registers and do not affect cpu-flags in any way.
- * Constructs a sequence of instruction before @p before (the resulting
- * nodes are already scheduled). A rewiring of users is not performed in
- * this function.
- * Returns a value representing the restored value.
- */
- ir_node *(*new_reload)(ir_node *value, ir_node *spilled_value,
- ir_node *before);
};
-#define arch_env_done(env) ((env)->impl->done(env))
+#define arch_env_end_codegeneration(env) ((env)->impl->end_codegeneration(env))
#define arch_env_handle_intrinsics(env) \
do { if((env)->impl->handle_intrinsics != NULL) (env)->impl->handle_intrinsics(); } while(0)
#define arch_env_get_call_abi(env,tp,abi) ((env)->impl->get_call_abi((tp), (abi)))
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