bd28bddb92
realised that the existing approach wasn't working. Now, hopefully, tracks the instruction trees generated during selection properly.
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
#ifndef MCGG_H
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#define MCGG_H
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/* Excruciating macro which packs ir opcodes and sizes into an int for iburg's benefit.
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*
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* Sizes are mapped as: 0=1, 1=1, 2=2, 4=3, 8=4.
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*/
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#define ir_to_esn(iropcode, size) \
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((iropcode)*4 + \
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(((size) == 4) ? 2 : \
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((size) == 8) ? 3 : \
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((size) == 0) ? 0 : \
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(size-1)))
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#define STATE_TYPE void*
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#define STATE_LABEL(p) ((p)->state_label)
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#define OP_LABEL(p) ((p)->label)
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#define LEFT_CHILD(p) ((p)->left)
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#define RIGHT_CHILD(p) ((p)->right)
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struct burm_node
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{
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int label;
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void* state_label;
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struct burm_node* left;
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struct burm_node* right;
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struct ir* ir;
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};
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typedef struct burm_node* NODEPTR_TYPE;
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extern void* burm_label(NODEPTR_TYPE node);
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extern int burm_rule(void* state, int goalnt);
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extern const short *burm_nts[];
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extern NODEPTR_TYPE* burm_kids(NODEPTR_TYPE p, int eruleno, NODEPTR_TYPE kids[]);
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extern void burm_trace(NODEPTR_TYPE p, int ruleno, int cost, int bestcost);
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struct burm_emitter_data
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{
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void (*emit_string)(const char* data);
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void (*emit_fragment)(int child);
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void (*emit_return_reg)(void);
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void (*emit_reg)(int child);
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void (*emit_value)(int child);
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void (*emit_eoi)(void);
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};
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typedef void burm_emitter_t(const struct burm_emitter_data* data);
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struct burm_instruction_data
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{
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const char* name;
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burm_emitter_t* emitter;
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int allocate;
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bool is_fragment;
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};
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extern const struct burm_instruction_data burm_instruction_data[];
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struct burm_register_data
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{
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const char* name;
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uint32_t classes;
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};
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extern const struct burm_register_data burm_register_data[];
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extern const char* burm_register_class_names[];
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#endif
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/* vim: set sw=4 ts=4 expandtab : */
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