Importing ir.h

diff --git a/ir.h b/ir.h
new file mode 100644 (file)
index 0000000..02ca79b
--- /dev/null
+++ b/ir.h
@@ -0,0 +1,241 @@
+#ifndef QCIR_H__
+#define QCIR_H__
+
+#include "astir.h"
+
+/* ir_value */
+
+typedef struct
+{
+       /* both inclusive */
+       size_t start;
+       size_t end;
+} ir_life_entry_t;
+
+struct ir_function_s;
+typedef struct ir_value_s {
+       const char *_name;
+       ir_type_t  vtype;
+       ir_store_t store;
+       filecontext_t context;
+
+       /*
+       size_t     read_use;
+       size_t     write_use;
+       */
+       MAKE_VEC(struct ir_instr_s*, reads);
+       MAKE_VEC(struct ir_instr_s*, writes);
+
+       /* constantvalues */
+       union {
+               float vfloat;
+               int   vint;
+               qc_vec_t vvec;
+               struct ir_value_s *vpointer;
+               const char *vstring;
+       } cvalue;
+       ir_bool has_constval;
+
+       /* For the temp allocator */
+       MAKE_VEC(ir_life_entry_t, life);
+} ir_value;
+
+/* ir_value can be a variable, or created by an operation */
+ir_value* ir_value_var(const char *name, ir_store_t st, ir_type_t vtype);
+/* if a result of an operation: the function should store
+ * it to remember to delete it / garbage collect it
+ */
+ir_value* ir_value_out(struct ir_function_s *owner, const char *name, ir_store_t st, ir_type_t vtype);
+void      ir_value_delete(ir_value*);
+void      ir_value_set_name(ir_value*, const char *name);
+
+void    ir_value_reads_add(ir_value*, struct ir_instr_s*);
+void    ir_value_writes_add(ir_value*, struct ir_instr_s*);
+
+ir_bool ir_value_set_float(ir_value*, float f);
+ir_bool ir_value_set_int(ir_value*, int i);
+ir_bool ir_value_set_string(ir_value*, const char *s);
+ir_bool ir_value_set_vector(ir_value*, qc_vec_t v);
+/*ir_bool ir_value_set_pointer_v(ir_value*, ir_value* p); */
+/*ir_bool ir_value_set_pointer_i(ir_value*, int i);       */
+
+void ir_value_life_add(ir_value*, ir_life_entry_t e);
+/* merge an instruction into the life-range */
+/* returns false if the lifepoint was already known */
+ir_bool ir_value_life_merge(ir_value*, size_t);
+/* check if a value lives at a specific point */
+ir_bool ir_value_lives(ir_value*, size_t);
+
+void ir_value_dump(ir_value*, int (*oprintf)(const char*,...));
+void ir_value_dump_life(ir_value *self, int (*oprintf)(const char*,...));
+
+typedef struct ir_phi_entry_s
+{
+       ir_value          *value;
+       struct ir_block_s *from;
+} ir_phi_entry_t;
+
+/* instruction */
+typedef struct ir_instr_s
+{
+       ir_op_t       opcode;
+       filecontext_t context;
+       ir_value*     (_ops[3]);
+       struct ir_block_s* (bops[2]);
+
+       MAKE_VEC(ir_phi_entry_t, phi);
+
+       /* For the temp-allocation */
+       size_t eid;
+
+       struct ir_block_s *owner;
+} ir_instr;
+
+ir_instr* ir_instr_new(struct ir_block_s *owner, ir_op_t opcode);
+void      ir_instr_delete(ir_instr*);
+
+void ir_instr_phi_add(ir_instr*, ir_phi_entry_t e);
+void ir_instr_op(ir_instr*, int op, ir_value *value, ir_bool writing);
+
+void ir_instr_dump(ir_instr* in, char *ind, int (*oprintf)(const char*,...));
+
+/* block */
+typedef struct ir_block_s
+{
+       const char    *_label;
+       filecontext_t context;
+       ir_bool         final; /* once a jump is added we're done */
+
+       MAKE_VEC(ir_instr*, instr);
+       MAKE_VEC(struct ir_block_s*, entries);
+       MAKE_VEC(struct ir_block_s*, exits);
+       MAKE_VEC(ir_value*, living);
+
+       /* For the temp-allocation */
+       size_t eid;
+       ir_bool is_return;
+       size_t run_id;
+
+       struct ir_function_s *owner;
+} ir_block;
+
+ir_block* ir_block_new(struct ir_function_s *owner, const char *label);
+void      ir_block_delete(ir_block*);
+
+void      ir_block_set_label(ir_block*, const char *label);
+
+void      ir_block_instr_add(ir_block*, ir_instr *instr);
+void      ir_block_instr_remove(ir_block*, size_t idx);
+void      ir_block_exits_add(ir_block*, ir_block *b);
+void      ir_block_entries_add(ir_block*, ir_block *b);
+ir_bool   ir_block_entries_find(ir_block*, ir_block *b, size_t *idx);
+
+ir_value* ir_block_create_binop(ir_block*, const char *label, ir_op_t op,
+                                ir_value *left, ir_value *right);
+ir_bool   ir_block_create_store_op(ir_block*, ir_op_t op, ir_value *target, ir_value *what);
+ir_bool   ir_block_create_store(ir_block*, ir_value *target, ir_value *what);
+
+ir_value* ir_block_create_add(ir_block*, const char *label, ir_value *l, ir_value *r);
+ir_value* ir_block_create_sub(ir_block*, const char *label, ir_value *l, ir_value *r);
+ir_value* ir_block_create_mul(ir_block*, const char *label, ir_value *l, ir_value *r);
+ir_value* ir_block_create_div(ir_block*, const char *label, ir_value *l, ir_value *r);
+ir_instr* ir_block_create_phi(ir_block*, const char *label, ir_type_t vtype);
+ir_value* ir_phi_value(ir_instr*);
+void      ir_phi_add(ir_instr*, ir_block *b, ir_value *v);
+
+void      ir_block_create_return(ir_block*, ir_value *opt_value);
+
+void      ir_block_create_if(ir_block*, ir_value *cond,
+                             ir_block *ontrue, ir_block *onfalse);
+/* A 'goto' is an actual 'goto' coded in QC, whereas
+ * a 'jump' is a virtual construct which simply names the
+ * next block to go to.
+ * A goto usually becomes an OP_GOTO in the resulting code,
+ * whereas a 'jump' usually doesn't add any actual instruction.
+ */
+void      ir_block_create_jump(ir_block*, ir_block *to);
+void      ir_block_create_goto(ir_block*, ir_block *to);
+
+void      ir_block_living_add(ir_block*, ir_value*);
+void      ir_block_living_remove(ir_block*, size_t idx);
+ir_bool   ir_block_living_find(ir_block*, ir_value*, size_t *idx);
+
+void ir_block_dump(ir_block*, char *ind, int (*oprintf)(const char*,...));
+
+/* function */
+
+typedef struct ir_function_s
+{
+       const char    *_name;
+       ir_type_t     retype;
+       MAKE_VEC(ir_type_t, params);
+       MAKE_VEC(ir_block*, blocks);
+
+       /* values generated from operations
+        * which might get optimized away, so anything
+        * in there needs to be deleted in the dtor.
+        */
+       MAKE_VEC(ir_value*, values);
+
+       /* locally defined variables */
+       MAKE_VEC(ir_value*, locals);
+
+       ir_block*     first;
+       ir_block*     last;
+
+       filecontext_t context;
+
+       /* for temp allocation */
+       size_t run_id;
+
+       struct ir_builder_s *owner;
+} ir_function;
+
+ir_function* ir_function_new(struct ir_builder_s *owner);
+void         ir_function_delete(ir_function*);
+
+void ir_function_collect_value(ir_function*, ir_value *value);
+
+void ir_function_set_name(ir_function*, const char *name);
+void ir_function_params_add(ir_function*, ir_type_t p);
+void ir_function_blocks_add(ir_function*, ir_block *b);
+
+ir_value* ir_function_get_local(ir_function *self, const char *name);
+ir_value* ir_function_create_local(ir_function *self, const char *name, ir_type_t vtype);
+
+void ir_function_finalize(ir_function*);
+/*
+void ir_function_naive_phi(ir_function*);
+void ir_function_enumerate(ir_function*);
+void ir_function_calculate_liferanges(ir_function*);
+*/
+
+ir_block* ir_function_create_block(ir_function*, const char *label);
+
+void ir_function_dump(ir_function*, char *ind, int (*oprintf)(const char*,...));
+
+/* builder */
+typedef struct ir_builder_s
+{
+       const char     *_name;
+       MAKE_VEC(ir_function*, functions);
+       MAKE_VEC(ir_value*, globals);
+} ir_builder;
+
+ir_builder* ir_builder_new(const char *modulename);
+void        ir_builder_delete(ir_builder*);
+
+void ir_builder_set_name(ir_builder *self, const char *name);
+
+void ir_builder_functions_add(ir_builder* b, ir_function* f);
+void ir_builder_globals_add(ir_builder* b, ir_value* f);
+
+ir_function* ir_builder_get_function(ir_builder*, const char *fun);
+ir_function* ir_builder_create_function(ir_builder*, const char *name);
+
+ir_value* ir_builder_get_global(ir_builder*, const char *fun);
+ir_value* ir_builder_create_global(ir_builder*, const char *name, ir_type_t vtype);
+
+void ir_builder_dump(ir_builder*, int (*oprintf)(const char*, ...));
+
+#endif