X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=ir.h;h=7964b74a90bf1bec096d655a94014ab12a99237d;hp=9b5171d26908dd6423ef07859d5cc830d7b746c6;hb=9335bc2f4fa5ab4d5b8e8f3320e6e42a9b3455ac;hpb=906f319673f6a2eddb62e59acc970b9497f3e96a diff --git a/ir.h b/ir.h index 9b5171d..7964b74 100644 --- a/ir.h +++ b/ir.h @@ -1,320 +1,310 @@ -/* - * Copyright (C) 2012 - * Wolfgang Bumiller - * - * Permission is hereby granted, free of charge, to any person obtaining a copy of - * this software and associated documentation files (the "Software"), to deal in - * the Software without restriction, including without limitation the rights to - * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is furnished to do - * so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ #ifndef GMQCC_IR_HDR #define GMQCC_IR_HDR +#include "gmqcc.h" + +/* + * 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; -/* ir_value */ +struct ir_value; +struct ir_instr; +struct ir_block; +struct ir_function; +struct ir_builder; -typedef struct -{ +struct ir_life_entry_t { /* both inclusive */ size_t start; size_t end; -} ir_life_entry_t; - -struct ir_function_s; -typedef 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; - - struct ir_instr_s **reads; - struct ir_instr_s **writes; - - /* constantvalues */ - bool isconst; +}; + +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 { + ir_value(std::string&& name, store_type storetype, qc_type vtype); + ~ir_value(); + + std::string m_name; + + qc_type m_vtype; + store_type m_store; + lex_ctx_t m_context; + qc_type m_fieldtype; // even the IR knows the subtype of a field + qc_type m_outtype; // and the output type of a function + int m_cvq; // 'const' vs 'var' qualifier + ir_flag_t m_flags; + + std::vector m_reads; + std::vector m_writes; + + // constant values + bool m_hasvalue; union { - float vfloat; - int vint; - vector vvec; - int32_t ivec[3]; - char *vstring; - struct ir_value_s *vpointer; - struct ir_function_s *vfunc; - } constval; + qcfloat_t vfloat; + int vint; + vec3_t vvec; + int32_t ivec[3]; + char *vstring; + ir_value *vpointer; + ir_function *vfunc; + } m_constval; struct { int32_t globaladdr; int32_t name; - /* filled by the local-allocator */ - int32_t local; - /* added for members */ - int32_t addroffset; - } code; + int32_t local; // filled by the local-allocator + int32_t addroffset; // added for members + int32_t fieldaddr; // to generate field-addresses early + } m_code; - /* for acessing vectors */ - struct ir_value_s *members[3]; - struct ir_value_s *memberof; + // for accessing vectors + ir_value *m_members[3]; + ir_value *m_memberof; - /* For the temp allocator */ - ir_life_entry_t *life; -} ir_value; + bool m_unique_life; // arrays will never overlap with temps + bool m_locked; // temps living during a CALL must be locked + bool m_callparam; -int32_t ir_value_code_addr(const ir_value*); + std::vector m_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, ir_value *what, size_t *idx); - +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; -} ir_phi_entry_t; +struct ir_phi_entry_t { + ir_value *value; + ir_block *from; +}; /* instruction */ -typedef struct ir_instr_s -{ - int opcode; - lex_ctx context; - ir_value* (_ops[3]); - struct ir_block_s* (bops[2]); - - ir_phi_entry_t *phi; - ir_value **params; +struct ir_instr { + ir_instr(lex_ctx_t, ir_block *owner, int opcode); + ~ir_instr(); - /* For the temp-allocation */ - size_t eid; + int m_opcode; + lex_ctx_t m_context; + ir_value *(_m_ops[3]) = { nullptr, nullptr, nullptr }; + ir_block *(m_bops[2]) = { nullptr, nullptr }; - struct ir_block_s *owner; -} ir_instr; + std::vector m_phi; + std::vector m_params; -ir_instr* ir_instr_new(struct ir_block_s *owner, int opcode); -void ir_instr_delete(ir_instr*); + // For the temp-allocation + size_t m_eid = 0; -bool GMQCC_WARN vec_ir_instr_find(ir_instr **vec, ir_instr *what, size_t *idx); + // For IFs + bool m_likely = true; -bool GMQCC_WARN 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 *m_owner; +}; /* block */ -typedef struct ir_block_s -{ - char *label; - lex_ctx 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; - - /* For the temp-allocation */ - size_t eid; - bool is_return; - size_t run_id; - - struct ir_function_s *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*); +struct ir_block { + ir_block(ir_function *owner, const std::string& name); + ~ir_block(); -bool ir_block_set_label(ir_block*, const char *label); + ir_function *m_owner; + std::string m_label; -ir_value* ir_block_create_binop(ir_block*, const char *label, int op, - ir_value *left, ir_value *right); -ir_value* ir_block_create_unary(ir_block*, const char *label, int op, - ir_value *operand); -bool GMQCC_WARN ir_block_create_store_op(ir_block*, int op, ir_value *target, ir_value *what); -bool GMQCC_WARN ir_block_create_store(ir_block*, ir_value *target, ir_value *what); -bool GMQCC_WARN ir_block_create_storep(ir_block*, ir_value *target, ir_value *what); + lex_ctx_t m_context; + bool m_final = false; /* once a jump is added we're done */ -/* field must be of TYPE_FIELD */ -ir_value* ir_block_create_load_from_ent(ir_block*, const char *label, ir_value *ent, ir_value *field, int outype); + ir_instr **m_instr = nullptr; + ir_block **m_entries = nullptr; + ir_block **m_exits = nullptr; + std::vector m_living; -ir_value* ir_block_create_fieldaddress(ir_block*, const char *label, ir_value *entity, ir_value *field); + /* For the temp-allocation */ + size_t m_entry_id = 0; + size_t m_eid = 0; + bool m_is_return = false; + + bool m_generated = false; + size_t m_code_start = 0; +}; + +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, qc_type 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, const char *label, - int op, ir_value *a, ir_value *b, int outype); - -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, int vtype); +ir_instr* ir_block_create_phi(ir_block*, lex_ctx_t, const char *label, qc_type 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*, const char *label, ir_value *func); +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*, 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*, 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*, ir_block *to); -bool GMQCC_WARN ir_block_create_goto(ir_block*, 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 */ +struct ir_function { + ir_function(ir_builder *owner, qc_type returntype); + ~ir_function(); -typedef struct ir_function_s -{ - char *name; - int outtype; - int *params; - ir_block **blocks; + ir_builder *m_owner; - int builtin; + std::string m_name; + qc_type m_outtype; + int *m_params = nullptr; + ir_flag_t m_flags = 0; + int m_builtin = 0; - ir_value *value; + std::vector> m_blocks; - /* 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; + std::vector> m_values; + std::vector> m_locals; /* locally defined variables */ + ir_value *m_value = nullptr; - size_t allocated_locals; + size_t m_allocated_locals = 0; + size_t m_globaltemps = 0; - ir_block* first; - ir_block* last; + ir_block* m_first = nullptr; + ir_block* m_last = nullptr; - lex_ctx context; + lex_ctx_t m_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 m_code_function_def = -1; /* for temp allocation */ - size_t run_id; + size_t m_run_id = 0; - struct ir_builder_s *owner; -} ir_function; + /* vararg support: */ + size_t m_max_varargs = 0; +}; -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); - -bool ir_function_set_name(ir_function*, const char *name); - -ir_value* ir_function_get_local(ir_function *self, const char *name); -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 std::string& name, qc_type 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(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 */ -typedef struct ir_builder_s -{ - char *name; - ir_function **functions; - ir_value **globals; - ir_value **fields; - - const char **filenames; - qcint *filestrings; - /* we cache the #IMMEDIATE string here */ - qcint str_immediate; -} ir_builder; - -ir_builder* ir_builder_new(const char *modulename); -void ir_builder_delete(ir_builder*); - -bool ir_builder_set_name(ir_builder *self, const char *name); - -ir_function* ir_builder_get_function(ir_builder*, const char *fun); -ir_function* ir_builder_create_function(ir_builder*, const char *name, int outtype); +#define IR_HT_SIZE 1024 +#define IR_MAX_VINSTR_TEMPS 1 + +struct ir_builder { + ir_builder(const std::string& modulename); + ~ir_builder(); + + std::string m_name; + std::vector> m_functions; + std::vector> m_globals; + std::vector> m_fields; + // for reusing them in vector-splits, TODO: sort this or use a radix-tree + std::vector m_const_floats; + + ht m_htfunctions; + ht m_htglobals; + ht m_htfields; + + // extparams' ir_values reference the ones from extparam_protos + std::vector> m_extparam_protos; + std::vector m_extparams; + + // the highest func->allocated_locals + size_t m_max_locals = 0; + size_t m_max_globaltemps = 0; + uint32_t m_first_common_local = 0; + uint32_t m_first_common_globaltemp = 0; + + std::vector m_filenames; + std::vector m_filestrings; + + // we cache the #IMMEDIATE string here + qcint_t m_str_immediate = 0; + + // there should just be this one nil + ir_value *m_nil; + ir_value *m_reserved_va_count = nullptr; + ir_value *m_coverage_func = nullptr; + + /* some virtual instructions require temps, and their code is isolated + * so that we don't need to keep track of their liveness. + */ + ir_value *m_vinstr_temp[IR_MAX_VINSTR_TEMPS]; -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); + /* code generator */ + std::unique_ptr m_code; +}; -bool ir_builder_generate(ir_builder *self, const char *filename); +ir_function* ir_builder_create_function(ir_builder*, const std::string& name, qc_type outtype); +ir_value* ir_builder_create_global(ir_builder*, const std::string& name, qc_type vtype); +ir_value* ir_builder_create_field(ir_builder*, const std::string& name, qc_type 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*, ...)); -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