X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=ir.h;h=cdf097bed4e17d31a2da7fc41a28e16497a7b93a;hp=4a1778e9d11d0b9e011745546802560e1feb10a2;hb=b640049912e2a8caa5164a9718ad5a7903600d70;hpb=40b2a26e896fd7a3f54c94ccb2abd9d517491822 diff --git a/ir.h b/ir.h index 4a1778e..cdf097b 100644 --- a/ir.h +++ b/ir.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2012 + * Copyright (C) 2012, 2013, 2014, 2015 * Wolfgang Bumiller * * Permission is hereby granted, free of charge, to any person obtaining a copy of @@ -23,119 +23,114 @@ #ifndef GMQCC_IR_HDR #define GMQCC_IR_HDR #include "gmqcc.h" -/* ir_value */ -typedef struct -{ +/* + * Type large enough to hold all the possible IR flags. This should be + * changed if the static assertion at the end of this file fails. + */ +typedef uint8_t ir_flag_t; + +typedef struct ir_value_s ir_value; +typedef struct ir_instr_s ir_instr; +typedef struct ir_block_s ir_block; +typedef struct ir_function_s ir_function; +typedef struct ir_builder_s ir_builder; + +typedef struct { /* both inclusive */ size_t start; size_t end; } ir_life_entry_t; -struct ir_function_s; -typedef struct ir_value_s { +enum { + IR_FLAG_HAS_ARRAYS = 1 << 0, + IR_FLAG_HAS_UNINITIALIZED = 1 << 1, + IR_FLAG_HAS_GOTO = 1 << 2, + IR_FLAG_INCLUDE_DEF = 1 << 3, + IR_FLAG_ERASABLE = 1 << 4, + IR_FLAG_BLOCK_COVERAGE = 1 << 5, + + IR_FLAG_SPLIT_VECTOR = 1 << 6, + + IR_FLAG_LAST, + IR_FLAG_MASK_NO_OVERLAP = (IR_FLAG_HAS_ARRAYS | IR_FLAG_HAS_UNINITIALIZED), + IR_FLAG_MASK_NO_LOCAL_TEMPS = (IR_FLAG_HAS_ARRAYS | IR_FLAG_HAS_UNINITIALIZED) +}; + +struct ir_value_s { char *name; - int vtype; - int store; - lex_ctx context; - /* even the IR knows the subtype of a field */ - int fieldtype; - /* and the output type of a function */ - int outtype; - /* 'const' vs 'var' qualifier */ - int cvq; - - struct ir_instr_s **reads; - struct ir_instr_s **writes; + int vtype; + int store; + lex_ctx_t context; + + + int fieldtype; /* even the IR knows the subtype of a field */ + int outtype; /* and the output type of a function */ + int cvq; /* 'const' vs 'var' qualifier */ + ir_flag_t flags; + + ir_instr **reads; + ir_instr **writes; /* constantvalues */ bool hasvalue; union { - float vfloat; - int vint; - vector vvec; - int32_t ivec[3]; - char *vstring; - struct ir_value_s *vpointer; - struct ir_function_s *vfunc; + qcfloat_t vfloat; + int vint; + vec3_t vvec; + int32_t ivec[3]; + char *vstring; + ir_value *vpointer; + ir_function *vfunc; } constval; struct { int32_t globaladdr; int32_t name; - /* filled by the local-allocator */ - int32_t local; - /* added for members */ - int32_t addroffset; - /* to generate field-addresses early */ - int32_t fieldaddr; + int32_t local; /* filled by the local-allocator */ + int32_t addroffset; /* added for members */ + int32_t fieldaddr; /* to generate field-addresses early */ } code; /* for acessing vectors */ - struct ir_value_s *members[3]; - struct ir_value_s *memberof; + ir_value *members[3]; + ir_value *memberof; - /* arrays will never overlap with temps */ - bool unique_life; - /* temps living during a CALL must be locked */ - bool locked; - bool callparam; - /* For the temp allocator */ - ir_life_entry_t *life; -} ir_value; + bool unique_life; /* arrays will never overlap with temps */ + bool locked; /* temps living during a CALL must be locked */ + bool callparam; -int32_t ir_value_code_addr(const ir_value*); + ir_life_entry_t *life; /* For the temp allocator */ +}; -/* ir_value can be a variable, or created by an operation */ -ir_value* ir_value_var(const char *name, int st, int vtype); -/* if a result of an operation: the function should store +/* + * ir_value can be a variable, or created by an operation + * 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, int st, int vtype); -void ir_value_delete(ir_value*); -bool ir_value_set_name(ir_value*, const char *name); -ir_value* ir_value_vector_member(ir_value*, unsigned int member); - -bool GMQCC_WARN vec_ir_value_find(ir_value **vec, const ir_value *what, size_t *idx); - +void ir_value_delete(ir_value*); +ir_value* ir_value_vector_member(ir_value*, unsigned int member); bool GMQCC_WARN ir_value_set_float(ir_value*, float f); bool GMQCC_WARN ir_value_set_func(ir_value*, int f); -#if 0 -bool GMQCC_WARN ir_value_set_int(ir_value*, int i); -#endif bool GMQCC_WARN ir_value_set_string(ir_value*, const char *s); -bool GMQCC_WARN ir_value_set_vector(ir_value*, vector v); +bool GMQCC_WARN ir_value_set_vector(ir_value*, vec3_t v); bool GMQCC_WARN ir_value_set_field(ir_value*, ir_value *fld); -/*bool ir_value_set_pointer_v(ir_value*, ir_value* p); */ -/*bool ir_value_set_pointer_i(ir_value*, int i); */ - -/* merge an instruction into the life-range */ -/* returns false if the lifepoint was already known */ -bool ir_value_life_merge(ir_value*, size_t); -bool ir_value_life_merge_into(ir_value*, const ir_value*); -/* check if a value lives at a specific point */ -bool ir_value_lives(ir_value*, size_t); -/* check if the life-range of 2 values overlaps */ -bool ir_values_overlap(const ir_value*, const ir_value*); - -void ir_value_dump(ir_value*, int (*oprintf)(const char*,...)); -void ir_value_dump_life(const ir_value *self, int (*oprintf)(const char*,...)); +bool ir_value_lives(ir_value*, size_t); +void ir_value_dump_life(const ir_value *self, int (*oprintf)(const char*,...)); /* PHI data */ -typedef struct ir_phi_entry_s -{ - ir_value *value; - struct ir_block_s *from; +typedef struct ir_phi_entry_s { + ir_value *value; + ir_block *from; } ir_phi_entry_t; /* instruction */ -typedef struct ir_instr_s -{ - int opcode; - lex_ctx context; +struct ir_instr_s { + int opcode; + lex_ctx_t context; ir_value* (_ops[3]); - struct ir_block_s* (bops[2]); + ir_block* (bops[2]); ir_phi_entry_t *phi; ir_value **params; @@ -146,165 +141,122 @@ typedef struct ir_instr_s /* For IFs */ bool likely; - struct ir_block_s *owner; -} ir_instr; - -ir_instr* ir_instr_new(lex_ctx ctx, struct ir_block_s *owner, int opcode); -void ir_instr_delete(ir_instr*); - -bool GMQCC_WARN vec_ir_instr_find(ir_instr **vec, ir_instr *what, size_t *idx); - -bool ir_instr_op(ir_instr*, int op, ir_value *value, bool writing); - -void ir_instr_dump(ir_instr* in, char *ind, int (*oprintf)(const char*,...)); + ir_block *owner; +}; /* block */ -typedef struct ir_block_s -{ +struct ir_block_s { char *label; - lex_ctx context; + lex_ctx_t context; bool final; /* once a jump is added we're done */ - ir_instr **instr; - struct ir_block_s **entries; - struct ir_block_s **exits; - ir_value **living; + ir_instr **instr; + ir_block **entries; + ir_block **exits; + ir_value **living; /* For the temp-allocation */ + size_t entry_id; size_t eid; bool is_return; - size_t run_id; - struct ir_function_s *owner; + ir_function *owner; bool generated; size_t code_start; -} ir_block; - -ir_block* ir_block_new(struct ir_function_s *owner, const char *label); -void ir_block_delete(ir_block*); - -bool ir_block_set_label(ir_block*, const char *label); - -ir_value* ir_block_create_binop(ir_block*, lex_ctx, const char *label, int op, - ir_value *left, ir_value *right); -ir_value* ir_block_create_unary(ir_block*, lex_ctx, const char *label, int op, - ir_value *operand); -bool GMQCC_WARN ir_block_create_store_op(ir_block*, lex_ctx, int op, ir_value *target, ir_value *what); -bool GMQCC_WARN ir_block_create_store(ir_block*, lex_ctx, ir_value *target, ir_value *what); -bool GMQCC_WARN ir_block_create_storep(ir_block*, lex_ctx, ir_value *target, ir_value *what); +}; -/* field must be of TYPE_FIELD */ -ir_value* ir_block_create_load_from_ent(ir_block*, lex_ctx, const char *label, ir_value *ent, ir_value *field, int outype); - -ir_value* ir_block_create_fieldaddress(ir_block*, lex_ctx, const char *label, ir_value *entity, ir_value *field); +ir_value* ir_block_create_binop(ir_block*, lex_ctx_t, const char *label, int op, ir_value *left, ir_value *right); +ir_value* ir_block_create_unary(ir_block*, lex_ctx_t, const char *label, int op, ir_value *operand); +bool GMQCC_WARN ir_block_create_store_op(ir_block*, lex_ctx_t, int op, ir_value *target, ir_value *what); +bool GMQCC_WARN ir_block_create_storep(ir_block*, lex_ctx_t, ir_value *target, ir_value *what); +ir_value* ir_block_create_load_from_ent(ir_block*, lex_ctx_t, const char *label, ir_value *ent, ir_value *field, int outype); +ir_value* ir_block_create_fieldaddress(ir_block*, lex_ctx_t, const char *label, ir_value *entity, ir_value *field); +bool GMQCC_WARN ir_block_create_state_op(ir_block*, lex_ctx_t, ir_value *frame, ir_value *think); /* This is to create an instruction of the form * %label := opcode a, b */ -ir_value* ir_block_create_general_instr(ir_block *self, lex_ctx, const char *label, - int op, ir_value *a, ir_value *b, int outype); - -ir_instr* ir_block_create_phi(ir_block*, lex_ctx, const char *label, int vtype); +ir_instr* ir_block_create_phi(ir_block*, lex_ctx_t, const char *label, int vtype); ir_value* ir_phi_value(ir_instr*); void ir_phi_add(ir_instr*, ir_block *b, ir_value *v); -ir_instr* ir_block_create_call(ir_block*, lex_ctx, const char *label, ir_value *func, bool noreturn); +ir_instr* ir_block_create_call(ir_block*, lex_ctx_t, const char *label, ir_value *func, bool noreturn); ir_value* ir_call_value(ir_instr*); void ir_call_param(ir_instr*, ir_value*); -bool GMQCC_WARN ir_block_create_return(ir_block*, lex_ctx, ir_value *opt_value); +bool GMQCC_WARN ir_block_create_return(ir_block*, lex_ctx_t, ir_value *opt_value); -bool GMQCC_WARN ir_block_create_if(ir_block*, lex_ctx, ir_value *cond, +bool GMQCC_WARN ir_block_create_if(ir_block*, lex_ctx_t, ir_value *cond, ir_block *ontrue, ir_block *onfalse); -/* A 'goto' is an actual 'goto' coded in QC, whereas +/* + * 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. */ -bool GMQCC_WARN ir_block_create_jump(ir_block*, lex_ctx, ir_block *to); -bool GMQCC_WARN ir_block_create_goto(ir_block*, lex_ctx, ir_block *to); - -void ir_block_dump(ir_block*, char *ind, int (*oprintf)(const char*,...)); +bool GMQCC_WARN ir_block_create_jump(ir_block*, lex_ctx_t, ir_block *to); +bool GMQCC_WARN ir_block_create_goto(ir_block*, lex_ctx_t, ir_block *to); /* function */ - -typedef struct ir_function_s -{ +struct ir_function_s { char *name; int outtype; int *params; ir_block **blocks; + ir_flag_t flags; + int builtin; - uint32_t flags; - - int builtin; - - ir_value *value; - - /* values generated from operations + /* + * values generated from operations * which might get optimized away, so anything * in there needs to be deleted in the dtor. */ ir_value **values; - - /* locally defined variables */ - ir_value **locals; + ir_value **locals; /* locally defined variables */ + ir_value *value; size_t allocated_locals; size_t globaltemps; - ir_block* first; - ir_block* last; + ir_block* first; + ir_block* last; - lex_ctx context; + lex_ctx_t context; - /* for prototypes - first we generate all the + /* + * for prototypes - first we generate all the * globals, and we remember teh function-defs * so we can later fill in the entry pos * * remember the ID: */ - qcint code_function_def; + qcint_t code_function_def; /* for temp allocation */ size_t run_id; - struct ir_builder_s *owner; -} ir_function; -#define IR_FLAG_HAS_ARRAYS (1<<1) -#define IR_FLAG_HAS_UNINITIALIZED (1<<2) -#define IR_FLAG_HAS_GOTO (1<<3) -#define IR_FLAG_MASK_NO_OVERLAP (IR_FLAG_HAS_ARRAYS | IR_FLAG_HAS_UNINITIALIZED) - -ir_function* ir_function_new(struct ir_builder_s *owner, int returntype); -void ir_function_delete(ir_function*); - -void ir_function_collect_value(ir_function*, ir_value *value); + ir_builder *owner; -bool ir_function_set_name(ir_function*, const char *name); + /* vararg support: */ + size_t max_varargs; +}; -ir_value* ir_function_create_local(ir_function *self, const char *name, int vtype, bool param); +ir_value* ir_function_create_local(ir_function *self, const char *name, int vtype, bool param); bool GMQCC_WARN ir_function_finalize(ir_function*); -/* -bool ir_function_naive_phi(ir_function*); -bool ir_function_enumerate(ir_function*); -bool ir_function_calculate_liferanges(ir_function*); -*/ - -ir_block* ir_function_create_block(lex_ctx ctx, ir_function*, const char *label); - -void ir_function_dump(ir_function*, char *ind, int (*oprintf)(const char*,...)); +ir_block* ir_function_create_block(lex_ctx_t ctx, ir_function*, const char *label); /* builder */ -#define IR_HT_SIZE 1024 -typedef struct ir_builder_s -{ +#define IR_HT_SIZE 1024 +#define IR_MAX_VINSTR_TEMPS 1 + +struct ir_builder_s { char *name; ir_function **functions; ir_value **globals; ir_value **fields; + ir_value **const_floats; /* for reusing them in vector-splits, TODO: sort this or use a radix-tree */ ht htfunctions; ht htglobals; @@ -320,32 +272,45 @@ typedef struct ir_builder_s uint32_t first_common_globaltemp; const char **filenames; - qcint *filestrings; + qcint_t *filestrings; /* we cache the #IMMEDIATE string here */ - qcint str_immediate; + qcint_t str_immediate; /* there should just be this one nil */ ir_value *nil; -} ir_builder; - -ir_builder* ir_builder_new(const char *modulename); -void ir_builder_delete(ir_builder*); + ir_value *reserved_va_count; + ir_value *coverage_func; + /* some virtual instructions require temps, and their code is isolated + * so that we don't need to keep track of their liveness. + */ + ir_value *vinstr_temp[IR_MAX_VINSTR_TEMPS]; -bool ir_builder_set_name(ir_builder *self, const char *name); + /* code generator */ + code_t *code; +}; -ir_function* ir_builder_get_function(ir_builder*, const char *fun); +ir_builder* ir_builder_new(const char *modulename); +void ir_builder_delete(ir_builder*); ir_function* ir_builder_create_function(ir_builder*, const char *name, int outtype); +ir_value* ir_builder_create_global(ir_builder*, const char *name, int vtype); +ir_value* ir_builder_create_field(ir_builder*, const char *name, int vtype); +ir_value* ir_builder_get_va_count(ir_builder*); +bool ir_builder_generate(ir_builder *self, const char *filename); +void ir_builder_dump(ir_builder*, int (*oprintf)(const char*, ...)); -ir_value* ir_builder_get_global(ir_builder*, const char *fun); -ir_value* ir_builder_create_global(ir_builder*, const char *name, int vtype); -ir_value* ir_builder_get_field(ir_builder*, const char *fun); -ir_value* ir_builder_create_field(ir_builder*, const char *name, int vtype); - -bool ir_builder_generate(ir_builder *self, const char *filename); - -void ir_builder_dump(ir_builder*, int (*oprintf)(const char*, ...)); +/* + * This code assumes 32 bit floats while generating binary + * Blub: don't use extern here, it's annoying and shows up in nm + * for some reason :P + */ +typedef int static_assert_is_32bit_float [(sizeof(int32_t) == 4) ? 1 : -1]; +typedef int static_assert_is_32bit_integer[(sizeof(qcfloat_t) == 4) ? 1 : -1]; -/* This code assumes 32 bit floats while generating binary */ -extern int check_int_and_float_size -[ (sizeof(int32_t) == sizeof(qcfloat)) ? 1 : -1 ]; +/* + * If the condition creates a situation where this becomes -1 size it means there are + * more IR_FLAGs than the type ir_flag_t is capable of holding. So either eliminate + * the IR flag count or change the ir_flag_t typedef to a type large enough to accomodate + * all the flags. + */ +typedef int static_assert_is_ir_flag_safe [((IR_FLAG_LAST) <= (ir_flag_t)(-1)) ? 1 : -1]; #endif