X-Git-Url: https://git.xonotic.org/?a=blobdiff_plain;f=ir.c;h=848e488e4d52e053b63fb33e6dbed1b11ce11685;hb=04cf1d549f7602b7b9521b12355204d3e8fd1249;hp=7bb1f6d7c4af7b3ab96c4cb6534783dc00b05d11;hpb=858d9734a2b41a5c08b709daae30fc4664b45480;p=xonotic%2Fgmqcc.git diff --git a/ir.c b/ir.c index 7bb1f6d..848e488 100644 --- a/ir.c +++ b/ir.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2012 + * Copyright (C) 2012 * Wolfgang Bumiller * * Permission is hereby granted, free of charge, to any person obtaining a copy of @@ -34,6 +34,9 @@ ir_builder* ir_builder_new(const char *modulename) ir_builder* self; self = (ir_builder*)mem_a(sizeof(*self)); + if (!self) + return NULL; + MEM_VECTOR_INIT(self, functions); MEM_VECTOR_INIT(self, globals); self->name = NULL; @@ -45,7 +48,7 @@ ir_builder* ir_builder_new(const char *modulename) /* globals which always exist */ /* for now we give it a vector size */ - ir_builder_create_global(self, "OFS_RETURN", qc_variant); + ir_builder_create_global(self, "OFS_RETURN", TYPE_VARIANT); return self; } @@ -140,6 +143,11 @@ ir_function* ir_function_new(ir_builder* owner) { ir_function *self; self = (ir_function*)mem_a(sizeof(*self)); + + if (!self) + return NULL; + + self->name = NULL; if (!ir_function_set_name(self, "<@unnamed>")) { mem_d(self); return NULL; @@ -147,7 +155,7 @@ ir_function* ir_function_new(ir_builder* owner) self->owner = owner; self->context.file = "<@no context>"; self->context.line = 0; - self->retype = qc_void; + self->retype = TYPE_VOID; MEM_VECTOR_INIT(self, params); MEM_VECTOR_INIT(self, blocks); MEM_VECTOR_INIT(self, values); @@ -251,6 +259,12 @@ ir_block* ir_block_new(ir_function* owner, const char *name) { ir_block *self; self = (ir_block*)mem_a(sizeof(*self)); + if (!self) + return NULL; + + memset(self, 0, sizeof(*self)); + + self->label = NULL; if (!ir_block_set_label(self, name)) { mem_d(self); return NULL; @@ -262,12 +276,14 @@ ir_block* ir_block_new(ir_function* owner, const char *name) MEM_VECTOR_INIT(self, instr); MEM_VECTOR_INIT(self, entries); MEM_VECTOR_INIT(self, exits); - self->label = NULL; self->eid = 0; self->is_return = false; self->run_id = 0; MEM_VECTOR_INIT(self, living); + + self->generated = false; + return self; } MEM_VEC_FUNCTIONS(ir_block, ir_instr*, instr) @@ -278,7 +294,7 @@ MEM_VEC_FUNCTIONS_ALL(ir_block, ir_value*, living) void ir_block_delete(ir_block* self) { size_t i; - mem_d((void*)self->label); + mem_d(self->label); for (i = 0; i != self->instr_count; ++i) ir_instr_delete(self->instr[i]); MEM_VECTOR_CLEAR(self, instr); @@ -304,6 +320,9 @@ ir_instr* ir_instr_new(ir_block* owner, int op) { ir_instr *self; self = (ir_instr*)mem_a(sizeof(*self)); + if (!self) + return NULL; + self->owner = owner; self->context.file = "<@no context>"; self->context.line = 0; @@ -332,14 +351,14 @@ void ir_instr_delete(ir_instr *self) for (i = 0; i < self->phi_count; ++i) { size_t idx; if (ir_value_writes_find(self->phi[i].value, self, &idx)) - if (ir_value_writes_remove(self->phi[i].value, idx)); + if (ir_value_writes_remove(self->phi[i].value, idx)) GMQCC_SUPRESS_EMPTY_BODY; if (ir_value_reads_find(self->phi[i].value, self, &idx)) - if (ir_value_reads_remove(self->phi[i].value, idx)); + if (ir_value_reads_remove (self->phi[i].value, idx)) GMQCC_SUPRESS_EMPTY_BODY; } MEM_VECTOR_CLEAR(self, phi); - if (ir_instr_op(self, 0, NULL, false)); - if (ir_instr_op(self, 1, NULL, false)); - if (ir_instr_op(self, 2, NULL, false)); + if (ir_instr_op(self, 0, NULL, false)) GMQCC_SUPRESS_EMPTY_BODY; + if (ir_instr_op(self, 1, NULL, false)) GMQCC_SUPRESS_EMPTY_BODY; + if (ir_instr_op(self, 2, NULL, false)) GMQCC_SUPRESS_EMPTY_BODY; mem_d(self); } @@ -380,6 +399,7 @@ ir_value* ir_value_var(const char *name, int storetype, int vtype) ir_value *self; self = (ir_value*)mem_a(sizeof(*self)); self->vtype = vtype; + self->fieldtype = TYPE_VOID; self->store = storetype; MEM_VECTOR_INIT(self, reads); MEM_VECTOR_INIT(self, writes); @@ -389,6 +409,9 @@ ir_value* ir_value_var(const char *name, int storetype, int vtype) self->name = NULL; ir_value_set_name(self, name); + memset(&self->constval, 0, sizeof(self->constval)); + memset(&self->code, 0, sizeof(self->code)); + MEM_VECTOR_INIT(self, life); return self; } @@ -414,7 +437,7 @@ void ir_value_delete(ir_value* self) mem_d((void*)self->name); if (self->isconst) { - if (self->vtype == qc_string) + if (self->vtype == TYPE_STRING) mem_d((void*)self->constval.vstring); } MEM_VECTOR_CLEAR(self, reads); @@ -432,16 +455,16 @@ void ir_value_set_name(ir_value *self, const char *name) bool ir_value_set_float(ir_value *self, float f) { - if (self->vtype != qc_float) + if (self->vtype != TYPE_FLOAT) return false; self->constval.vfloat = f; self->isconst = true; return true; } -bool ir_value_set_vector(ir_value *self, vector_t v) +bool ir_value_set_vector(ir_value *self, vector v) { - if (self->vtype != qc_vector) + if (self->vtype != TYPE_VECTOR) return false; self->constval.vvec = v; self->isconst = true; @@ -450,21 +473,23 @@ bool ir_value_set_vector(ir_value *self, vector_t v) bool ir_value_set_string(ir_value *self, const char *str) { - if (self->vtype != qc_string) + if (self->vtype != TYPE_STRING) return false; self->constval.vstring = util_strdup(str); self->isconst = true; return true; } +#if 0 bool ir_value_set_int(ir_value *self, int i) { - if (self->vtype != qc_int) + if (self->vtype != TYPE_INTEGER) return false; self->constval.vint = i; self->isconst = true; return true; } +#endif bool ir_value_lives(ir_value *self, size_t at) { @@ -508,6 +533,7 @@ bool ir_value_life_merge(ir_value *self, size_t s) } /* nothing found? append */ if (i == self->life_count) { + ir_life_entry_t e; if (life && life->end+1 == s) { /* previous life range can be merged in */ @@ -516,7 +542,6 @@ bool ir_value_life_merge(ir_value *self, size_t s) } if (life && life->end >= s) return false; - ir_life_entry_t e; e.start = e.end = s; if (!ir_value_life_add(self, e)) return false; /* failing */ @@ -555,6 +580,65 @@ bool ir_value_life_merge(ir_value *self, size_t s) return ir_value_life_insert(self, i, new_entry); } +bool ir_values_overlap(ir_value *a, ir_value *b) +{ + /* For any life entry in A see if it overlaps with + * any life entry in B. + * Note that the life entries are orderes, so we can make a + * more efficient algorithm there than naively translating the + * statement above. + */ + + ir_life_entry_t *la, *lb, *enda, *endb; + + /* first of all, if either has no life range, they cannot clash */ + if (!a->life_count || !b->life_count) + return false; + + la = a->life; + lb = b->life; + enda = la + a->life_count; + endb = lb + b->life_count; + while (true) + { + /* check if the entries overlap, for that, + * both must start before the other one ends. + */ +#if defined(LIFE_RANGE_WITHOUT_LAST_READ) + if (la->start <= lb->end && + lb->start <= la->end) +#else + if (la->start < lb->end && + lb->start < la->end) +#endif + { + return true; + } + + /* entries are ordered + * one entry is earlier than the other + * that earlier entry will be moved forward + */ + if (la->end < lb->end) + { + /* order: A B, move A forward + * check if we hit the end with A + */ + if (++la == enda) + break; + } + else if (lb->end < la->end) + { + /* order: B A, move B forward + * check if we hit the end with B + */ + if (++lb == endb) + break; + } + } + return false; +} + /*********************************************************************** *IR main operations */ @@ -563,6 +647,7 @@ bool ir_block_create_store_op(ir_block *self, int op, ir_value *target, ir_value { if (target->store == store_value) { fprintf(stderr, "cannot store to an SSA value\n"); + fprintf(stderr, "trying to store: %s <- %s\n", target->name, what->name); return false; } else { ir_instr *in = ir_instr_new(self, op); @@ -582,44 +667,98 @@ bool ir_block_create_store(ir_block *self, ir_value *target, ir_value *what) { int op = 0; int vtype; - if (target->vtype == qc_variant) + if (target->vtype == TYPE_VARIANT) vtype = what->vtype; else vtype = target->vtype; switch (vtype) { - case qc_float: + case TYPE_FLOAT: #if 0 - if (what->vtype == qc_int) + if (what->vtype == TYPE_INTEGER) op = INSTR_CONV_ITOF; else #endif op = INSTR_STORE_F; break; - case qc_vector: + case TYPE_VECTOR: op = INSTR_STORE_V; break; - case qc_entity: + case TYPE_ENTITY: op = INSTR_STORE_ENT; break; - case qc_string: + case TYPE_STRING: op = INSTR_STORE_S; break; + case TYPE_FIELD: + op = INSTR_STORE_FLD; + break; #if 0 - case qc_int: - if (what->vtype == qc_int) + case TYPE_INTEGER: + if (what->vtype == TYPE_INTEGER) op = INSTR_CONV_FTOI; else op = INSTR_STORE_I; break; #endif - case qc_pointer: + case TYPE_POINTER: #if 0 op = INSTR_STORE_I; #else op = INSTR_STORE_ENT; #endif break; + default: + /* Unknown type */ + return false; + } + return ir_block_create_store_op(self, op, target, what); +} + +bool ir_block_create_storep(ir_block *self, ir_value *target, ir_value *what) +{ + int op = 0; + int vtype; + + if (target->vtype != TYPE_POINTER) + return false; + + /* storing using pointer - target is a pointer, type must be + * inferred from source + */ + vtype = what->vtype; + + switch (vtype) { + case TYPE_FLOAT: + op = INSTR_STOREP_F; + break; + case TYPE_VECTOR: + op = INSTR_STOREP_V; + break; + case TYPE_ENTITY: + op = INSTR_STOREP_ENT; + break; + case TYPE_STRING: + op = INSTR_STOREP_S; + break; + case TYPE_FIELD: + op = INSTR_STOREP_FLD; + break; +#if 0 + case TYPE_INTEGER: + op = INSTR_STOREP_I; + break; +#endif + case TYPE_POINTER: +#if 0 + op = INSTR_STOREP_I; +#else + op = INSTR_STOREP_ENT; +#endif + break; + default: + /* Unknown type */ + return false; } return ir_block_create_store_op(self, op, target, what); } @@ -654,7 +793,7 @@ bool ir_block_create_if(ir_block *self, ir_value *v, return false; } self->final = true; - //in = ir_instr_new(self, (v->vtype == qc_string ? INSTR_IF_S : INSTR_IF_F)); + /*in = ir_instr_new(self, (v->vtype == TYPE_STRING ? INSTR_IF_S : INSTR_IF_F));*/ in = ir_instr_new(self, VINSTR_COND); if (!in) return false; @@ -735,7 +874,7 @@ ir_instr* ir_block_create_phi(ir_block *self, const char *label, int ot) in = ir_instr_new(self, VINSTR_PHI); if (!in) return NULL; - out = ir_value_out(self->owner, label, store_local, ot); + out = ir_value_out(self->owner, label, store_value, ot); if (!out) { ir_instr_delete(in); return NULL; @@ -783,7 +922,7 @@ ir_value* ir_block_create_binop(ir_block *self, const char *label, int opcode, ir_value *left, ir_value *right) { - int ot = qc_void; + int ot = TYPE_VOID; switch (opcode) { case INSTR_ADD_F: case INSTR_SUB_F: @@ -815,7 +954,7 @@ ir_value* ir_block_create_binop(ir_block *self, case INSTR_EQ_I: case INSTR_NE_I: #endif - ot = qc_float; + ot = TYPE_FLOAT; break; #if 0 case INSTR_ADD_I: @@ -831,7 +970,7 @@ ir_value* ir_block_create_binop(ir_block *self, case INSTR_XOR_I: case INSTR_RSHIFT_I: case INSTR_LSHIFT_I: - ot = qc_int; + ot = TYPE_INTEGER; break; #endif case INSTR_ADD_V: @@ -843,58 +982,107 @@ ir_value* ir_block_create_binop(ir_block *self, case INSTR_MUL_IV: case INSTR_MUL_VI: #endif - ot = qc_vector; + ot = TYPE_VECTOR; break; #if 0 case INSTR_ADD_SF: - ot = qc_pointer; + ot = TYPE_POINTER; break; #endif default: - // ranges: + /* ranges: */ /* boolean operations result in floats */ if (opcode >= INSTR_EQ_F && opcode <= INSTR_GT) - ot = qc_float; + ot = TYPE_FLOAT; else if (opcode >= INSTR_LE && opcode <= INSTR_GT) - ot = qc_float; + ot = TYPE_FLOAT; #if 0 else if (opcode >= INSTR_LE_I && opcode <= INSTR_EQ_FI) - ot = qc_float; + ot = TYPE_FLOAT; #endif break; }; - if (ot == qc_void) { + if (ot == TYPE_VOID) { /* The AST or parser were supposed to check this! */ return NULL; } - ir_value *out = ir_value_out(self->owner, label, store_local, ot); + return ir_block_create_general_instr(self, label, opcode, left, right, ot); +} + +ir_value* ir_block_create_general_instr(ir_block *self, const char *label, + int op, ir_value *a, ir_value *b, int outype) +{ + ir_instr *instr; + ir_value *out; + + out = ir_value_out(self->owner, label, store_value, outype); if (!out) return NULL; - ir_instr *in = ir_instr_new(self, opcode); - if (!in) { + instr = ir_instr_new(self, op); + if (!instr) { ir_value_delete(out); return NULL; } - if (!ir_instr_op(in, 0, out, true) || - !ir_instr_op(in, 1, left, false) || - !ir_instr_op(in, 2, right, false) ) + if (!ir_instr_op(instr, 0, out, true) || + !ir_instr_op(instr, 1, a, false) || + !ir_instr_op(instr, 2, b, false) ) { goto on_error; } - if (!ir_block_instr_add(self, in)) + if (!ir_block_instr_add(self, instr)) goto on_error; return out; on_error: + ir_instr_delete(instr); ir_value_delete(out); - ir_instr_delete(in); return NULL; } +ir_value* ir_block_create_fieldaddress(ir_block *self, const char *label, ir_value *ent, ir_value *field) +{ + /* Support for various pointer types todo if so desired */ + if (ent->vtype != TYPE_ENTITY) + return NULL; + + if (field->vtype != TYPE_FIELD) + return NULL; + + return ir_block_create_general_instr(self, label, INSTR_ADDRESS, ent, field, TYPE_POINTER); +} + +ir_value* ir_block_create_load_from_ent(ir_block *self, const char *label, ir_value *ent, ir_value *field, int outype) +{ + int op; + if (ent->vtype != TYPE_ENTITY) + return NULL; + + /* at some point we could redirect for TYPE_POINTER... but that could lead to carelessness */ + if (field->vtype != TYPE_FIELD) + return NULL; + + switch (outype) + { + case TYPE_FLOAT: op = INSTR_LOAD_F; break; + case TYPE_VECTOR: op = INSTR_LOAD_V; break; + case TYPE_STRING: op = INSTR_LOAD_S; break; + case TYPE_FIELD: op = INSTR_LOAD_FLD; break; + case TYPE_ENTITY: op = INSTR_LOAD_ENT; break; +#if 0 + case TYPE_POINTER: op = INSTR_LOAD_I; break; + case TYPE_INTEGER: op = INSTR_LOAD_I; break; +#endif + default: + return NULL; + } + + return ir_block_create_general_instr(self, label, op, ent, field, outype); +} + ir_value* ir_block_create_add(ir_block *self, const char *label, ir_value *left, ir_value *right) @@ -906,23 +1094,23 @@ ir_value* ir_block_create_add(ir_block *self, switch (l) { default: return NULL; - case qc_float: + case TYPE_FLOAT: op = INSTR_ADD_F; break; #if 0 - case qc_int: + case TYPE_INTEGER: op = INSTR_ADD_I; break; #endif - case qc_vector: + case TYPE_VECTOR: op = INSTR_ADD_V; break; } } else { #if 0 - if ( (l == qc_float && r == qc_int) ) + if ( (l == TYPE_FLOAT && r == TYPE_INTEGER) ) op = INSTR_ADD_FI; - else if ( (l == qc_int && r == qc_float) ) + else if ( (l == TYPE_INTEGER && r == TYPE_FLOAT) ) op = INSTR_ADD_IF; else #endif @@ -943,23 +1131,23 @@ ir_value* ir_block_create_sub(ir_block *self, switch (l) { default: return NULL; - case qc_float: + case TYPE_FLOAT: op = INSTR_SUB_F; break; #if 0 - case qc_int: + case TYPE_INTEGER: op = INSTR_SUB_I; break; #endif - case qc_vector: + case TYPE_VECTOR: op = INSTR_SUB_V; break; } } else { #if 0 - if ( (l == qc_float && r == qc_int) ) + if ( (l == TYPE_FLOAT && r == TYPE_INTEGER) ) op = INSTR_SUB_FI; - else if ( (l == qc_int && r == qc_float) ) + else if ( (l == TYPE_INTEGER && r == TYPE_FLOAT) ) op = INSTR_SUB_IF; else #endif @@ -980,31 +1168,31 @@ ir_value* ir_block_create_mul(ir_block *self, switch (l) { default: return NULL; - case qc_float: + case TYPE_FLOAT: op = INSTR_MUL_F; break; #if 0 - case qc_int: + case TYPE_INTEGER: op = INSTR_MUL_I; break; #endif - case qc_vector: + case TYPE_VECTOR: op = INSTR_MUL_V; break; } } else { - if ( (l == qc_vector && r == qc_float) ) + if ( (l == TYPE_VECTOR && r == TYPE_FLOAT) ) op = INSTR_MUL_VF; - else if ( (l == qc_float && r == qc_vector) ) + else if ( (l == TYPE_FLOAT && r == TYPE_VECTOR) ) op = INSTR_MUL_FV; #if 0 - else if ( (l == qc_vector && r == qc_int) ) + else if ( (l == TYPE_VECTOR && r == TYPE_INTEGER) ) op = INSTR_MUL_VI; - else if ( (l == qc_int && r == qc_vector) ) + else if ( (l == TYPE_INTEGER && r == TYPE_VECTOR) ) op = INSTR_MUL_IV; - else if ( (l == qc_float && r == qc_int) ) + else if ( (l == TYPE_FLOAT && r == TYPE_INTEGER) ) op = INSTR_MUL_FI; - else if ( (l == qc_int && r == qc_float) ) + else if ( (l == TYPE_INTEGER && r == TYPE_FLOAT) ) op = INSTR_MUL_IF; #endif else @@ -1025,22 +1213,22 @@ ir_value* ir_block_create_div(ir_block *self, switch (l) { default: return NULL; - case qc_float: + case TYPE_FLOAT: op = INSTR_DIV_F; break; #if 0 - case qc_int: + case TYPE_INTEGER: op = INSTR_DIV_I; break; #endif } } else { #if 0 - if ( (l == qc_vector && r == qc_float) ) + if ( (l == TYPE_VECTOR && r == TYPE_FLOAT) ) op = INSTR_DIV_VF; - else if ( (l == qc_float && r == qc_int) ) + else if ( (l == TYPE_FLOAT && r == TYPE_INTEGER) ) op = INSTR_DIV_FI; - else if ( (l == qc_int && r == qc_float) ) + else if ( (l == TYPE_INTEGER && r == TYPE_FLOAT) ) op = INSTR_DIV_IF; else #endif @@ -1117,7 +1305,7 @@ static bool ir_block_naive_phi(ir_block *self) if (v->writes[w]->_ops[0] == v) v->writes[w]->_ops[0] = instr->_ops[0]; - if (old->store != store_local) + if (old->store != store_value && old->store != store_local) { /* If it originally wrote to a global we need to store the value * there as welli @@ -1312,14 +1500,19 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change ir_instr *instr; ir_value *value; bool tempbool; - size_t i, o, p, rd; + size_t i, o, p; /* bitmasks which operands are read from or written to */ size_t read, write; +#if defined(LIFE_RANGE_WITHOUT_LAST_READ) + size_t rd; new_reads_t new_reads; +#endif char dbg_ind[16] = { '#', '0' }; (void)dbg_ind; +#if defined(LIFE_RANGE_WITHOUT_LAST_READ) MEM_VECTOR_INIT(&new_reads, v); +#endif if (prev) { @@ -1336,16 +1529,19 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change for (p = 0; p < instr->phi_count; ++p) { value = instr->phi[p].value; - /* used this before new_reads - puts the last read into the life range as well - if (!ir_block_living_find(self, value, NULL)) - ir_block_living_add(self, value); - */ - /* fprintf(stderr, "read: %s\n", value->_name); */ +#if ! defined(LIFE_RANGE_WITHOUT_LAST_READ) + if (!ir_block_living_find(self, value, NULL) && + !ir_block_living_add(self, value)) + { + goto on_error; + } +#else if (!new_reads_t_v_find(&new_reads, value, NULL)) { if (!new_reads_t_v_add(&new_reads, value)) goto on_error; } +#endif } /* See which operands are read and write operands */ @@ -1367,16 +1563,20 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change /* read operands */ if (read & (1<_name); */ if (!new_reads_t_v_find(&new_reads, value, NULL)) { if (!new_reads_t_v_add(&new_reads, value)) goto on_error; } +#endif } /* write operands */ @@ -1386,10 +1586,15 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change */ if (write & (1<eid); - //fprintf(stderr, "living added values\n"); + /*fprintf(stderr, "living added values\n");*/ *changed = *changed || tempbool; +#if defined(LIFE_RANGE_WITHOUT_LAST_READ) /* new reads: */ for (rd = 0; rd < new_reads.v_count; ++rd) { @@ -1446,6 +1655,7 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change } } MEM_VECTOR_CLEAR(&new_reads, v); +#endif } if (self->run_id == self->owner->run_id) @@ -1461,6 +1671,612 @@ static bool ir_block_life_propagate(ir_block *self, ir_block *prev, bool *change return true; on_error: +#if defined(LIFE_RANGE_WITHOUT_LAST_READ) MEM_VECTOR_CLEAR(&new_reads, v); +#endif return false; } + +/*********************************************************************** + *IR Code-Generation + * + * Since the IR has the convention of putting 'write' operands + * at the beginning, we have to rotate the operands of instructions + * properly in order to generate valid QCVM code. + * + * Having destinations at a fixed position is more convenient. In QC + * this is *mostly* OPC, but FTE adds at least 2 instructions which + * read from from OPA, and store to OPB rather than OPC. Which is + * partially the reason why the implementation of these instructions + * in darkplaces has been delayed for so long. + * + * Breaking conventions is annoying... + */ +static bool ir_builder_gen_global(ir_builder *self, ir_value *global); + +static bool gen_global_field(ir_value *global) +{ + if (global->isconst) + { + ir_value *fld = global->constval.vpointer; + if (!fld) { + printf("Invalid field constant with no field: %s\n", global->name); + return false; + } + + /* Now, in this case, a relocation would be impossible to code + * since it looks like this: + * .vector v = origin; <- parse error, wtf is 'origin'? + * .vector origin; + * + * But we will need a general relocation support later anyway + * for functions... might as well support that here. + */ + if (!fld->code.globaladdr) { + printf("FIXME: Relocation support\n"); + return false; + } + + /* copy the field's value */ + global->code.globaladdr = code_globals_add(code_globals_data[fld->code.globaladdr]); + } + else + { + prog_section_field fld; + + fld.name = global->code.name; + fld.offset = code_fields_elements; + fld.type = global->fieldtype; + + if (fld.type == TYPE_VOID) { + printf("Field is missing a type: %s\n", global->name); + return false; + } + + if (code_fields_add(fld) < 0) + return false; + + global->code.globaladdr = code_globals_add(fld.offset); + } + if (global->code.globaladdr < 0) + return false; + return true; +} + +static bool gen_global_pointer(ir_value *global) +{ + if (global->isconst) + { + ir_value *target = global->constval.vpointer; + if (!target) { + printf("Invalid pointer constant: %s\n", global->name); + /* NULL pointers are pointing to the NULL constant, which also + * sits at address 0, but still has an ir_value for itself. + */ + return false; + } + + /* Here, relocations ARE possible - in fteqcc-enhanced-qc: + * void() foo; <- proto + * void() *fooptr = &foo; + * void() foo = { code } + */ + if (!target->code.globaladdr) { + /* FIXME: Check for the constant nullptr ir_value! + * because then code.globaladdr being 0 is valid. + */ + printf("FIXME: Relocation support\n"); + return false; + } + + global->code.globaladdr = code_globals_add(target->code.globaladdr); + } + else + { + global->code.globaladdr = code_globals_add(0); + } + if (global->code.globaladdr < 0) + return false; + return true; +} + +static bool gen_blocks_recursive(ir_function *func, ir_block *block) +{ + prog_section_statement stmt; + prog_section_statement *stptr; + ir_instr *instr; + ir_block *target; + ir_block *ontrue; + ir_block *onfalse; + size_t stidx; + size_t i; + +tailcall: + block->generated = true; + block->code_start = code_statements_elements; + for (i = 0; i < block->instr_count; ++i) + { + instr = block->instr[i]; + + if (instr->opcode == VINSTR_PHI) { + printf("cannot generate virtual instruction (phi)\n"); + return false; + } + + if (instr->opcode == VINSTR_JUMP) { + target = instr->bops[0]; + /* for uncoditional jumps, if the target hasn't been generated + * yet, we generate them right here. + */ + if (!target->generated) { + block = target; + goto tailcall; + } + + /* otherwise we generate a jump instruction */ + stmt.opcode = INSTR_GOTO; + stmt.o1.s1 = (target->code_start-1) - code_statements_elements; + stmt.o2.s1 = 0; + stmt.o3.s1 = 0; + if (code_statements_add(stmt) < 0) + return false; + + /* no further instructions can be in this block */ + return true; + } + + if (instr->opcode == VINSTR_COND) { + ontrue = instr->bops[0]; + onfalse = instr->bops[1]; + /* TODO: have the AST signal which block should + * come first: eg. optimize IFs without ELSE... + */ + + stmt.o1.s1 = instr->_ops[0]->code.globaladdr; + + stmt.o3.s1 = 0; + if (ontrue->generated) { + stmt.opcode = INSTR_IF; + stmt.o2.s1 = (ontrue->code_start-1) - code_statements_elements; + if (code_statements_add(stmt) < 0) + return false; + } + if (onfalse->generated) { + stmt.opcode = INSTR_IFNOT; + stmt.o2.s1 = (onfalse->code_start-1) - code_statements_elements; + if (code_statements_add(stmt) < 0) + return false; + } + if (!ontrue->generated) { + if (onfalse->generated) { + block = ontrue; + goto tailcall; + } + } + if (!onfalse->generated) { + if (ontrue->generated) { + block = onfalse; + goto tailcall; + } + } + /* neither ontrue nor onfalse exist */ + stmt.opcode = INSTR_IFNOT; + stidx = code_statements_elements - 1; + if (code_statements_add(stmt) < 0) + return false; + stptr = &code_statements_data[stidx]; + /* on false we jump, so add ontrue-path */ + if (!gen_blocks_recursive(func, ontrue)) + return false; + /* fixup the jump address */ + stptr->o2.s1 = (ontrue->code_start-1) - (stidx+1); + /* generate onfalse path */ + if (onfalse->generated) { + /* may have been generated in the previous recursive call */ + stmt.opcode = INSTR_GOTO; + stmt.o2.s1 = 0; + stmt.o3.s1 = 0; + stmt.o1.s1 = (onfalse->code_start-1) - code_statements_elements; + return (code_statements_add(stmt) >= 0); + } + /* if not, generate now */ + block = onfalse; + goto tailcall; + } + + if (instr->opcode >= INSTR_CALL0 && instr->opcode <= INSTR_CALL8) { + printf("TODO: call instruction\n"); + return false; + } + + if (instr->opcode == INSTR_STATE) { + printf("TODO: state instruction\n"); + return false; + } + + stmt.opcode = instr->opcode; + stmt.o1.u1 = 0; + stmt.o2.u1 = 0; + stmt.o3.u1 = 0; + + /* This is the general order of operands */ + if (instr->_ops[0]) + stmt.o3.u1 = instr->_ops[0]->code.globaladdr; + + if (instr->_ops[1]) + stmt.o1.u1 = instr->_ops[1]->code.globaladdr; + + if (instr->_ops[2]) + stmt.o2.u1 = instr->_ops[2]->code.globaladdr; + + if (stmt.opcode == INSTR_RETURN) + { + stmt.o1.u1 = stmt.o3.u1; + stmt.o3.u1 = 0; + } + + if (code_statements_add(stmt) < 0) + return false; + } + return true; +} + +static bool gen_function_code(ir_function *self) +{ + ir_block *block; + + /* Starting from entry point, we generate blocks "as they come" + * for now. Dead blocks will not be translated obviously. + */ + if (!self->blocks_count) { + printf("Function '%s' declared without body.\n", self->name); + return false; + } + + block = self->blocks[0]; + if (block->generated) + return true; + + if (!gen_blocks_recursive(self, block)) { + printf("failed to generate blocks for '%s'\n", self->name); + return false; + } + return true; +} + +static bool gen_global_function(ir_builder *ir, ir_value *global) +{ + prog_section_function fun; + ir_function *irfun; + + size_t i; + + if (!global->isconst || + !global->constval.vfunc) + { + printf("Invalid state of function-global: not constant: %s\n", global->name); + return false; + } + + irfun = global->constval.vfunc; + + fun.name = global->code.name; + fun.file = code_cachedstring(global->context.file); + fun.profile = 0; /* always 0 */ + fun.nargs = irfun->params_count; + + for (i = 0;i < 8; ++i) { + if (i >= fun.nargs) + fun.argsize[i] = 0; + else if (irfun->params[i] == TYPE_VECTOR) + fun.argsize[i] = 3; + else + fun.argsize[i] = 1; + } + + fun.locals = irfun->locals_count; + fun.firstlocal = code_globals_elements; + for (i = 0; i < irfun->locals_count; ++i) { + if (!ir_builder_gen_global(ir, irfun->locals[i])) { + printf("Failed to generate global %s\n", irfun->locals[i]->name); + return false; + } + } + + fun.entry = code_statements_elements; + if (!gen_function_code(irfun)) { + printf("Failed to generate code for function %s\n", irfun->name); + return false; + } + + return (code_functions_add(fun) >= 0); +} + +static bool ir_builder_gen_global(ir_builder *self, ir_value *global) +{ + int32_t *iptr; + prog_section_def def; + + def.type = global->vtype; + def.offset = code_globals_elements; + def.name = global->code.name = code_genstring(global->name); + + switch (global->vtype) + { + case TYPE_POINTER: + if (code_defs_add(def) < 0) + return false; + return gen_global_pointer(global); + case TYPE_FIELD: + if (code_defs_add(def) < 0) + return false; + return gen_global_field(global); + case TYPE_ENTITY: + if (code_defs_add(def) < 0) + return false; + case TYPE_FLOAT: + { + if (code_defs_add(def) < 0) + return false; + + if (global->isconst) { + iptr = (int32_t*)&global->constval.vfloat; + global->code.globaladdr = code_globals_add(*iptr); + } else + global->code.globaladdr = code_globals_add(0); + + return global->code.globaladdr >= 0; + } + case TYPE_STRING: + { + if (code_defs_add(def) < 0) + return false; + if (global->isconst) + global->code.globaladdr = code_globals_add(code_cachedstring(global->constval.vstring)); + else + global->code.globaladdr = code_globals_add(0); + return global->code.globaladdr >= 0; + } + case TYPE_VECTOR: + { + if (code_defs_add(def) < 0) + return false; + + if (global->isconst) { + iptr = (int32_t*)&global->constval.vvec; + global->code.globaladdr = code_globals_add(iptr[0]); + if (code_globals_add(iptr[1]) < 0 || code_globals_add(iptr[2]) < 0) + return false; + } else { + global->code.globaladdr = code_globals_add(0); + if (code_globals_add(0) < 0 || code_globals_add(0) < 0) + return false; + } + return global->code.globaladdr >= 0; + } + case TYPE_FUNCTION: + if (code_defs_add(def) < 0) + return false; + return gen_global_function(self, global); + case TYPE_VARIANT: + /* assume biggest type */ + global->code.globaladdr = code_globals_add(0); + code_globals_add(0); + code_globals_add(0); + return true; + default: + /* refuse to create 'void' type or any other fancy business. */ + printf("Invalid type for global variable %s\n", global->name); + return false; + } +} + +bool ir_builder_generate(ir_builder *self, const char *filename) +{ + size_t i; + + code_init(); + + /* FIXME: generate TYPE_FUNCTION globals and link them + * to their ir_function. + */ + + for (i = 0; i < self->globals_count; ++i) + { + if (!ir_builder_gen_global(self, self->globals[i])) + return false; + } + + printf("writing '%s'...\n", filename); + return code_write(filename); +} + +/*********************************************************************** + *IR DEBUG Dump functions... + */ + +#define IND_BUFSZ 1024 + +const char *qc_opname(int op) +{ + if (op < 0) return ""; + if (op < ( sizeof(asm_instr) / sizeof(asm_instr[0]) )) + return asm_instr[op].m; + switch (op) { + case VINSTR_PHI: return "PHI"; + case VINSTR_JUMP: return "JUMP"; + case VINSTR_COND: return "COND"; + default: return ""; + } +} + +void ir_builder_dump(ir_builder *b, int (*oprintf)(const char*, ...)) +{ + size_t i; + char indent[IND_BUFSZ]; + indent[0] = '\t'; + indent[1] = 0; + + oprintf("module %s\n", b->name); + for (i = 0; i < b->globals_count; ++i) + { + oprintf("global "); + if (b->globals[i]->isconst) + oprintf("%s = ", b->globals[i]->name); + ir_value_dump(b->globals[i], oprintf); + oprintf("\n"); + } + for (i = 0; i < b->functions_count; ++i) + ir_function_dump(b->functions[i], indent, oprintf); + oprintf("endmodule %s\n", b->name); +} + +void ir_function_dump(ir_function *f, char *ind, + int (*oprintf)(const char*, ...)) +{ + size_t i; + oprintf("%sfunction %s\n", ind, f->name); + strncat(ind, "\t", IND_BUFSZ); + if (f->locals_count) + { + oprintf("%s%i locals:\n", ind, (int)f->locals_count); + for (i = 0; i < f->locals_count; ++i) { + oprintf("%s\t", ind); + ir_value_dump(f->locals[i], oprintf); + oprintf("\n"); + } + } + if (f->blocks_count) + { + oprintf("%slife passes (check): %i\n", ind, (int)f->run_id); + for (i = 0; i < f->blocks_count; ++i) { + if (f->blocks[i]->run_id != f->run_id) { + oprintf("%slife pass check fail! %i != %i\n", ind, (int)f->blocks[i]->run_id, (int)f->run_id); + } + ir_block_dump(f->blocks[i], ind, oprintf); + } + + } + ind[strlen(ind)-1] = 0; + oprintf("%sendfunction %s\n", ind, f->name); +} + +void ir_block_dump(ir_block* b, char *ind, + int (*oprintf)(const char*, ...)) +{ + size_t i; + oprintf("%s:%s\n", ind, b->label); + strncat(ind, "\t", IND_BUFSZ); + + for (i = 0; i < b->instr_count; ++i) + ir_instr_dump(b->instr[i], ind, oprintf); + ind[strlen(ind)-1] = 0; +} + +void dump_phi(ir_instr *in, char *ind, + int (*oprintf)(const char*, ...)) +{ + size_t i; + oprintf("%s <- phi ", in->_ops[0]->name); + for (i = 0; i < in->phi_count; ++i) + { + oprintf("([%s] : %s) ", in->phi[i].from->label, + in->phi[i].value->name); + } + oprintf("\n"); +} + +void ir_instr_dump(ir_instr *in, char *ind, + int (*oprintf)(const char*, ...)) +{ + size_t i; + const char *comma = NULL; + + oprintf("%s (%i) ", ind, (int)in->eid); + + if (in->opcode == VINSTR_PHI) { + dump_phi(in, ind, oprintf); + return; + } + + strncat(ind, "\t", IND_BUFSZ); + + if (in->_ops[0] && (in->_ops[1] || in->_ops[2])) { + ir_value_dump(in->_ops[0], oprintf); + if (in->_ops[1] || in->_ops[2]) + oprintf(" <- "); + } + oprintf("%s\t", qc_opname(in->opcode)); + if (in->_ops[0] && !(in->_ops[1] || in->_ops[2])) { + ir_value_dump(in->_ops[0], oprintf); + comma = ",\t"; + } + else + { + for (i = 1; i != 3; ++i) { + if (in->_ops[i]) { + if (comma) + oprintf(comma); + ir_value_dump(in->_ops[i], oprintf); + comma = ",\t"; + } + } + } + if (in->bops[0]) { + if (comma) + oprintf(comma); + oprintf("[%s]", in->bops[0]->label); + comma = ",\t"; + } + if (in->bops[1]) + oprintf("%s[%s]", comma, in->bops[1]->label); + oprintf("\n"); + ind[strlen(ind)-1] = 0; +} + +void ir_value_dump(ir_value* v, int (*oprintf)(const char*, ...)) +{ + if (v->isconst) { + switch (v->vtype) { + case TYPE_VOID: + oprintf("(void)"); + break; + case TYPE_FLOAT: + oprintf("%g", v->constval.vfloat); + break; + case TYPE_VECTOR: + oprintf("'%g %g %g'", + v->constval.vvec.x, + v->constval.vvec.y, + v->constval.vvec.z); + break; + case TYPE_ENTITY: + oprintf("(entity)"); + break; + case TYPE_STRING: + oprintf("\"%s\"", v->constval.vstring); + break; +#if 0 + case TYPE_INTEGER: + oprintf("%i", v->constval.vint); + break; +#endif + case TYPE_POINTER: + oprintf("&%s", + v->constval.vpointer->name); + break; + } + } else { + oprintf("%s", v->name); + } +} + +void ir_value_dump_life(ir_value *self, int (*oprintf)(const char*,...)) +{ + size_t i; + oprintf("Life of %s:\n", self->name); + for (i = 0; i < self->life_count; ++i) + { + oprintf(" + [%i, %i]\n", self->life[i].start, self->life[i].end); + } +}