X-Git-Url: https://git.xonotic.org/?a=blobdiff_plain;ds=sidebyside;f=ast.c;h=f5ed565e93644b202798d2ff88c33ada85d57656;hb=b1425dfcf1afa18b81168ed57a4b790ddc0605b5;hp=bfdcf621c80eb4a8d1c2a77bd8109589c15e4140;hpb=0340a6a6e7879bf834172b2b6e07adcd65e0a948;p=xonotic%2Fgmqcc.git diff --git a/ast.c b/ast.c index bfdcf62..f5ed565 100644 --- a/ast.c +++ b/ast.c @@ -40,14 +40,14 @@ static void asterror(lex_ctx ctx, const char *msg, ...) { va_list ap; va_start(ap, msg); - cvprintmsg(ctx, LVL_ERROR, "error", msg, ap); + con_cvprintmsg((void*)&ctx, LVL_ERROR, "error", msg, ap); va_end(ap); } /* It must not be possible to get here. */ static GMQCC_NORETURN void _ast_node_destroy(ast_node *self) { - fprintf(stderr, "ast node missing destroy()\n"); + con_err("ast node missing destroy()\n"); abort(); } @@ -70,7 +70,7 @@ static void ast_expression_init(ast_expression *self, self->expression.outl = NULL; self->expression.outr = NULL; self->expression.variadic = false; - MEM_VECTOR_INIT(&self->expression, params); + self->expression.params = NULL; } static void ast_expression_delete(ast_expression *self) @@ -78,10 +78,10 @@ static void ast_expression_delete(ast_expression *self) size_t i; if (self->expression.next) ast_delete(self->expression.next); - for (i = 0; i < self->expression.params_count; ++i) { + for (i = 0; i < vec_size(self->expression.params); ++i) { ast_delete(self->expression.params[i]); } - MEM_VECTOR_CLEAR(&self->expression, params); + vec_free(self->expression.params); } static void ast_expression_delete_full(ast_expression *self) @@ -90,8 +90,6 @@ static void ast_expression_delete_full(ast_expression *self) mem_d(self); } -MEM_VEC_FUNCTIONS(ast_expression_common, ast_value*, params) - ast_value* ast_value_copy(const ast_value *self) { size_t i; @@ -108,12 +106,13 @@ ast_value* ast_value_copy(const ast_value *self) fromex = &self->expression; selfex = &cp->expression; selfex->variadic = fromex->variadic; - for (i = 0; i < fromex->params_count; ++i) { + for (i = 0; i < vec_size(fromex->params); ++i) { ast_value *v = ast_value_copy(fromex->params[i]); - if (!v || !ast_expression_common_params_add(selfex, v)) { + if (!v) { ast_value_delete(cp); return NULL; } + vec_push(selfex->params, v); } return cp; } @@ -132,10 +131,11 @@ bool ast_type_adopt_impl(ast_expression *self, const ast_expression *other) fromex = &other->expression; selfex = &self->expression; selfex->variadic = fromex->variadic; - for (i = 0; i < fromex->params_count; ++i) { + for (i = 0; i < vec_size(fromex->params); ++i) { ast_value *v = ast_value_copy(fromex->params[i]); - if (!v || !ast_expression_common_params_add(selfex, v)) + if (!v) return false; + vec_push(selfex->params, v); } return true; } @@ -182,12 +182,13 @@ ast_expression* ast_type_copy(lex_ctx ctx, const ast_expression *ex) selfex->next = NULL; selfex->variadic = fromex->variadic; - for (i = 0; i < fromex->params_count; ++i) { + for (i = 0; i < vec_size(fromex->params); ++i) { ast_value *v = ast_value_copy(fromex->params[i]); - if (!v || !ast_expression_common_params_add(selfex, v)) { + if (!v) { ast_expression_delete_full(self); return NULL; } + vec_push(selfex->params, v); } return self; @@ -200,13 +201,13 @@ bool ast_compare_type(ast_expression *a, ast_expression *b) return false; if (!a->expression.next != !b->expression.next) return false; - if (a->expression.params_count != b->expression.params_count) + if (vec_size(a->expression.params) != vec_size(b->expression.params)) return false; if (a->expression.variadic != b->expression.variadic) return false; - if (a->expression.params_count) { + if (vec_size(a->expression.params)) { size_t i; - for (i = 0; i < a->expression.params_count; ++i) { + for (i = 0; i < vec_size(a->expression.params); ++i) { if (!ast_compare_type((ast_expression*)a->expression.params[i], (ast_expression*)b->expression.params[i])) return false; @@ -257,14 +258,14 @@ static size_t ast_type_to_string_impl(ast_expression *e, char *buf, size_t bufsi pos = ast_type_to_string_impl(e->expression.next, buf, bufsize, pos); if (pos + 2 >= bufsize) goto full; - if (e->expression.params_count == 0) { + if (!vec_size(e->expression.params)) { buf[pos++] = '('; buf[pos++] = ')'; return pos; } buf[pos++] = '('; pos = ast_type_to_string_impl((ast_expression*)(e->expression.params[0]), buf, bufsize, pos); - for (i = 1; i < e->expression.params_count; ++i) { + for (i = 1; i < vec_size(e->expression.params); ++i) { if (pos + 2 >= bufsize) goto full; buf[pos++] = ','; @@ -360,9 +361,9 @@ void ast_value_delete(ast_value* self) mem_d(self); } -bool GMQCC_WARN ast_value_params_add(ast_value *self, ast_value *p) +void ast_value_params_add(ast_value *self, ast_value *p) { - return ast_expression_common_params_add(&self->expression, p); + vec_push(self->expression.params, p); } bool ast_value_set_name(ast_value *self, const char *name) @@ -569,7 +570,7 @@ void ast_member_delete(ast_member *self) ast_array_index* ast_array_index_new(lex_ctx ctx, ast_expression *array, ast_expression *index) { - const ast_expression *outtype; + ast_expression *outtype; ast_instantiate(ast_array_index, ctx, ast_array_index_delete); outtype = array->expression.next; @@ -588,6 +589,15 @@ ast_array_index* ast_array_index_new(lex_ctx ctx, ast_expression *array, ast_exp ast_array_index_delete(self); return NULL; } + if (array->expression.vtype == TYPE_FIELD && outtype->expression.vtype == TYPE_ARRAY) { + if (self->expression.vtype != TYPE_ARRAY) { + asterror(ast_ctx(self), "array_index node on type"); + ast_array_index_delete(self); + return NULL; + } + self->array = outtype; + self->expression.vtype = TYPE_FIELD; + } return self; } @@ -690,15 +700,57 @@ void ast_loop_delete(ast_loop *self) mem_d(self); } +ast_breakcont* ast_breakcont_new(lex_ctx ctx, bool iscont) +{ + ast_instantiate(ast_breakcont, ctx, ast_breakcont_delete); + ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_breakcont_codegen); + + self->is_continue = iscont; + + return self; +} + +void ast_breakcont_delete(ast_breakcont *self) +{ + ast_expression_delete((ast_expression*)self); + mem_d(self); +} + +ast_switch* ast_switch_new(lex_ctx ctx, ast_expression *op) +{ + ast_instantiate(ast_switch, ctx, ast_switch_delete); + ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_switch_codegen); + + self->operand = op; + self->cases = NULL; + + return self; +} + +void ast_switch_delete(ast_switch *self) +{ + size_t i; + ast_unref(self->operand); + + for (i = 0; i < vec_size(self->cases); ++i) { + if (self->cases[i].value) + ast_unref(self->cases[i].value); + ast_unref(self->cases[i].code); + } + vec_free(self->cases); + + ast_expression_delete((ast_expression*)self); + mem_d(self); +} + ast_call* ast_call_new(lex_ctx ctx, ast_expression *funcexpr) { ast_instantiate(ast_call, ctx, ast_call_delete); ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_call_codegen); - MEM_VECTOR_INIT(self, params); - - self->func = funcexpr; + self->params = NULL; + self->func = funcexpr; self->expression.vtype = funcexpr->expression.next->expression.vtype; if (funcexpr->expression.next->expression.next) @@ -706,14 +758,13 @@ ast_call* ast_call_new(lex_ctx ctx, return self; } -MEM_VEC_FUNCTIONS(ast_call, ast_expression*, params) void ast_call_delete(ast_call *self) { size_t i; - for (i = 0; i < self->params_count; ++i) + for (i = 0; i < vec_size(self->params); ++i) ast_unref(self->params[i]); - MEM_VECTOR_CLEAR(self, params); + vec_free(self->params); if (self->func) ast_unref(self->func); @@ -727,9 +778,9 @@ bool ast_call_check_types(ast_call *self) size_t i; bool retval = true; const ast_expression *func = self->func; - size_t count = self->params_count; - if (count > func->expression.params_count) - count = func->expression.params_count; + size_t count = vec_size(self->params); + if (count > vec_size(func->expression.params)) + count = vec_size(func->expression.params); for (i = 0; i < count; ++i) { if (!ast_compare_type(self->params[i], (ast_expression*)(func->expression.params[i]))) { @@ -780,36 +831,31 @@ ast_block* ast_block_new(lex_ctx ctx) ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_block_codegen); - MEM_VECTOR_INIT(self, locals); - MEM_VECTOR_INIT(self, exprs); - MEM_VECTOR_INIT(self, collect); + self->locals = NULL; + self->exprs = NULL; + self->collect = NULL; return self; } -MEM_VEC_FUNCTIONS(ast_block, ast_value*, locals) -MEM_VEC_FUNCTIONS(ast_block, ast_expression*, exprs) -MEM_VEC_FUNCTIONS(ast_block, ast_expression*, collect) -bool ast_block_collect(ast_block *self, ast_expression *expr) +void ast_block_collect(ast_block *self, ast_expression *expr) { - if (!ast_block_collect_add(self, expr)) - return false; + vec_push(self->collect, expr); expr->expression.node.keep = true; - return true; } void ast_block_delete(ast_block *self) { size_t i; - for (i = 0; i < self->exprs_count; ++i) + for (i = 0; i < vec_size(self->exprs); ++i) ast_unref(self->exprs[i]); - MEM_VECTOR_CLEAR(self, exprs); - for (i = 0; i < self->locals_count; ++i) + vec_free(self->exprs); + for (i = 0; i < vec_size(self->locals); ++i) ast_delete(self->locals[i]); - MEM_VECTOR_CLEAR(self, locals); - for (i = 0; i < self->collect_count; ++i) + vec_free(self->locals); + for (i = 0; i < vec_size(self->collect); ++i) ast_delete(self->collect[i]); - MEM_VECTOR_CLEAR(self, collect); + vec_free(self->collect); ast_expression_delete((ast_expression*)self); mem_d(self); } @@ -841,9 +887,9 @@ ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype) return NULL; } - self->vtype = vtype; - self->name = name ? util_strdup(name) : NULL; - MEM_VECTOR_INIT(self, blocks); + self->vtype = vtype; + self->name = name ? util_strdup(name) : NULL; + self->blocks = NULL; self->labelcount = 0; self->builtin = 0; @@ -860,8 +906,6 @@ ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype) return self; } -MEM_VEC_FUNCTIONS(ast_function, ast_block*, blocks) - void ast_function_delete(ast_function *self) { size_t i; @@ -876,9 +920,9 @@ void ast_function_delete(ast_function *self) */ ast_unref(self->vtype); } - for (i = 0; i < self->blocks_count; ++i) + for (i = 0; i < vec_size(self->blocks); ++i) ast_delete(self->blocks[i]); - MEM_VECTOR_CLEAR(self, blocks); + vec_free(self->blocks); mem_d(self); } @@ -1246,10 +1290,9 @@ bool ast_function_codegen(ast_function *self, ir_builder *ir) /* fill the parameter list */ ec = &self->vtype->expression; - for (i = 0; i < ec->params_count; ++i) + for (i = 0; i < vec_size(ec->params); ++i) { - if (!ir_function_params_add(irf, ec->params[i]->expression.vtype)) - return false; + vec_push(irf->params, ec->params[i]->expression.vtype); if (!self->builtin) { if (!ast_local_codegen(ec->params[i], self->ir_func, true)) return false; @@ -1261,7 +1304,7 @@ bool ast_function_codegen(ast_function *self, ir_builder *ir) return true; } - if (!self->blocks_count) { + if (!vec_size(self->blocks)) { asterror(ast_ctx(self), "function `%s` has no body", self->name); return false; } @@ -1272,7 +1315,7 @@ bool ast_function_codegen(ast_function *self, ir_builder *ir) return false; } - for (i = 0; i < self->blocks_count; ++i) { + for (i = 0; i < vec_size(self->blocks); ++i) { ast_expression_codegen *gen = self->blocks[i]->expression.codegen; if (!(*gen)((ast_expression*)self->blocks[i], self, false, &dummy)) return false; @@ -1333,7 +1376,7 @@ bool ast_block_codegen(ast_block *self, ast_function *func, bool lvalue, ir_valu *out = NULL; /* generate locals */ - for (i = 0; i < self->locals_count; ++i) + for (i = 0; i < vec_size(self->locals); ++i) { if (!ast_local_codegen(self->locals[i], func->ir_func, false)) { if (opts_debug) @@ -1342,9 +1385,13 @@ bool ast_block_codegen(ast_block *self, ast_function *func, bool lvalue, ir_valu } } - for (i = 0; i < self->exprs_count; ++i) + for (i = 0; i < vec_size(self->exprs); ++i) { ast_expression_codegen *gen = self->exprs[i]->expression.codegen; + if (func->curblock->final) { + asterror(ast_ctx(self->exprs[i]), "unreachable statement"); + return false; + } if (!(*gen)(self->exprs[i], func, false, out)) return false; } @@ -1414,10 +1461,8 @@ bool ast_store_codegen(ast_store *self, ast_function *func, bool lvalue, ir_valu call = ir_block_create_call(func->curblock, ast_function_label(func, "store"), funval); if (!call) return false; - if (!ir_call_param(call, iridx)) - return false; - if (!ir_call_param(call, right)) - return false; + ir_call_param(call, iridx); + ir_call_param(call, right); self->expression.outr = right; } else @@ -1468,13 +1513,60 @@ bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_va return true; } + if (OPTS_FLAG(SHORT_LOGIC) && + (self->op == INSTR_AND || self->op == INSTR_OR)) + { + /* short circuit evaluation */ + ir_block *other, *merge; + ir_block *from_left, *from_right; + ir_instr *phi; + size_t merge_id; + + merge_id = vec_size(func->blocks); + merge = ir_function_create_block(func->ir_func, ast_function_label(func, "sce_merge")); + + cgen = self->left->expression.codegen; + if (!(*cgen)((ast_expression*)(self->left), func, false, &left)) + return false; + + from_left = func->curblock; + other = ir_function_create_block(func->ir_func, ast_function_label(func, "sce_other")); + if (self->op == INSTR_AND) { + if (!ir_block_create_if(func->curblock, left, other, merge)) + return false; + } else { + if (!ir_block_create_if(func->curblock, left, merge, other)) + return false; + } + /* use the unlikely flag */ + vec_last(func->curblock->instr)->likely = false; + + func->curblock = other; + cgen = self->right->expression.codegen; + if (!(*cgen)((ast_expression*)(self->right), func, false, &right)) + return false; + from_right = func->curblock; + + if (!ir_block_create_jump(func->curblock, merge)) + return false; + + vec_remove(func->ir_func->blocks, merge_id, 1); + vec_push(func->ir_func->blocks, merge); + + func->curblock = merge; + phi = ir_block_create_phi(func->curblock, ast_function_label(func, "sce_value"), TYPE_FLOAT); + ir_phi_add(phi, from_left, left); + ir_phi_add(phi, from_right, right); + *out = ir_phi_value(phi); + self->expression.outr = *out; + return true; + } + cgen = self->left->expression.codegen; - /* lvalue! */ if (!(*cgen)((ast_expression*)(self->left), func, false, &left)) return false; cgen = self->right->expression.codegen; - /* rvalue! */ if (!(*cgen)((ast_expression*)(self->right), func, false, &right)) return false; @@ -1738,8 +1830,7 @@ bool ast_array_index_codegen(ast_array_index *self, ast_function *func, bool lva call = ir_block_create_call(func->curblock, ast_function_label(func, "fetch"), funval); if (!call) return false; - if (!ir_call_param(call, iridx)) - return false; + ir_call_param(call, iridx); *out = ir_call_value(call); self->expression.outr = *out; @@ -1946,12 +2037,10 @@ bool ast_ternary_codegen(ast_ternary *self, ast_function *func, bool lvalue, ir_ /* create PHI */ phi = ir_block_create_phi(merge, ast_function_label(func, "phi"), trueval->vtype); - if (!phi || - !ir_phi_add(phi, ontrue, trueval) || - !ir_phi_add(phi, onfalse, falseval)) - { + if (!phi) return false; - } + ir_phi_add(phi, ontrue, trueval); + ir_phi_add(phi, onfalse, falseval); self->phi_out = ir_phi_value(phi); *out = self->phi_out; @@ -2063,7 +2152,7 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value bpostcond = end_bpostcond = NULL; } - bout_id = func->ir_func->blocks_count; + bout_id = vec_size(func->ir_func->blocks); bout = ir_function_create_block(func->ir_func, ast_function_label(func, "after_loop")); if (!bout) return false; @@ -2183,20 +2272,195 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value } /* Move 'bout' to the end */ - if (!ir_function_blocks_remove(func->ir_func, bout_id) || - !ir_function_blocks_add(func->ir_func, bout)) - { - ir_block_delete(bout); + vec_remove(func->ir_func->blocks, bout_id, 1); + vec_push(func->ir_func->blocks, bout); + + return true; +} + +bool ast_breakcont_codegen(ast_breakcont *self, ast_function *func, bool lvalue, ir_value **out) +{ + ir_block *target; + + if (lvalue) { + asterror(ast_ctx(self), "break/continue expression is not an l-value"); return false; } + if (self->expression.outr) { + asterror(ast_ctx(self), "internal error: ast_breakcont cannot be reused!"); + return false; + } + self->expression.outr = (ir_value*)1; + + if (self->is_continue) + target = func->continueblock; + else + target = func->breakblock; + + if (!ir_block_create_jump(func->curblock, target)) + return false; + return true; +} + +bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_value **out) +{ + ast_expression_codegen *cgen; + + ast_switch_case *def_case = NULL; + ir_block *def_bfall = NULL; + + ir_value *dummy = NULL; + ir_value *irop = NULL; + ir_block *old_break = NULL; + ir_block *bout = NULL; + ir_block *bfall = NULL; + size_t bout_id; + size_t c; + + char typestr[1024]; + uint16_t cmpinstr; + + if (lvalue) { + asterror(ast_ctx(self), "switch expression is not an l-value"); + return false; + } + + if (self->expression.outr) { + asterror(ast_ctx(self), "internal error: ast_switch cannot be reused!"); + return false; + } + self->expression.outr = (ir_value*)1; + + (void)lvalue; + (void)out; + + cgen = self->operand->expression.codegen; + if (!(*cgen)((ast_expression*)(self->operand), func, false, &irop)) + return false; + + if (!vec_size(self->cases)) + return true; + + cmpinstr = type_eq_instr[irop->vtype]; + if (cmpinstr >= AINSTR_END) { + ast_type_to_string(self->operand, typestr, sizeof(typestr)); + asterror(ast_ctx(self), "invalid type to perform a switch on: %s", typestr); + return false; + } + + bout_id = vec_size(func->ir_func->blocks); + bout = ir_function_create_block(func->ir_func, ast_function_label(func, "after_switch")); + if (!bout) + return false; + + /* setup the break block */ + old_break = func->breakblock; + func->breakblock = bout; + + /* Now create all cases */ + for (c = 0; c < vec_size(self->cases); ++c) { + ir_value *cond, *val; + ir_block *bcase, *bnot; + size_t bnot_id; + + ast_switch_case *swcase = &self->cases[c]; + + if (swcase->value) { + /* A regular case */ + /* generate the condition operand */ + cgen = swcase->value->expression.codegen; + if (!(*cgen)((ast_expression*)(swcase->value), func, false, &val)) + return false; + /* generate the condition */ + cond = ir_block_create_binop(func->curblock, ast_function_label(func, "switch_eq"), cmpinstr, irop, val); + if (!cond) + return false; + + bcase = ir_function_create_block(func->ir_func, ast_function_label(func, "case")); + bnot_id = vec_size(func->ir_func->blocks); + bnot = ir_function_create_block(func->ir_func, ast_function_label(func, "not_case")); + if (!bcase || !bnot) + return false; + if (!ir_block_create_if(func->curblock, cond, bcase, bnot)) + return false; + + /* Make the previous case-end fall through */ + if (bfall && !bfall->final) { + if (!ir_block_create_jump(bfall, bcase)) + return false; + } + + /* enter the case */ + func->curblock = bcase; + cgen = swcase->code->expression.codegen; + if (!(*cgen)((ast_expression*)swcase->code, func, false, &dummy)) + return false; + + /* remember this block to fall through from */ + bfall = func->curblock; + + /* enter the else and move it down */ + func->curblock = bnot; + vec_remove(func->ir_func->blocks, bnot_id, 1); + vec_push(func->ir_func->blocks, bnot); + } else { + /* The default case */ + /* Remember where to fall through from: */ + def_bfall = bfall; + bfall = NULL; + /* remember which case it was */ + def_case = swcase; + } + } + + /* Jump from the last bnot to bout */ + if (bfall && !bfall->final && !ir_block_create_jump(bfall, bout)) { + /* + astwarning(ast_ctx(bfall), WARN_???, "missing break after last case"); + */ + return false; + } + + /* If there was a default case, put it down here */ + if (def_case) { + ir_block *bcase; + + /* No need to create an extra block */ + bcase = func->curblock; + + /* Insert the fallthrough jump */ + if (def_bfall && !def_bfall->final) { + if (!ir_block_create_jump(def_bfall, bcase)) + return false; + } + + /* Now generate the default code */ + cgen = def_case->code->expression.codegen; + if (!(*cgen)((ast_expression*)def_case->code, func, false, &dummy)) + return false; + } + + /* Jump from the last bnot to bout */ + if (!func->curblock->final && !ir_block_create_jump(func->curblock, bout)) + return false; + /* enter the outgoing block */ + func->curblock = bout; + + /* restore the break block */ + func->breakblock = old_break; + + /* Move 'bout' to the end, it's nicer */ + vec_remove(func->ir_func->blocks, bout_id, 1); + vec_push(func->ir_func->blocks, bout); + return true; } bool ast_call_codegen(ast_call *self, ast_function *func, bool lvalue, ir_value **out) { ast_expression_codegen *cgen; - ir_value_vector params; + ir_value **params; ir_instr *callinstr; size_t i; @@ -2219,10 +2483,10 @@ bool ast_call_codegen(ast_call *self, ast_function *func, bool lvalue, ir_value if (!funval) return false; - MEM_VECTOR_INIT(¶ms, v); + params = NULL; /* parameters */ - for (i = 0; i < self->params_count; ++i) + for (i = 0; i < vec_size(self->params); ++i) { ir_value *param; ast_expression *expr = self->params[i]; @@ -2232,25 +2496,23 @@ bool ast_call_codegen(ast_call *self, ast_function *func, bool lvalue, ir_value goto error; if (!param) goto error; - if (!ir_value_vector_v_add(¶ms, param)) - goto error; + vec_push(params, param); } callinstr = ir_block_create_call(func->curblock, ast_function_label(func, "call"), funval); if (!callinstr) goto error; - for (i = 0; i < params.v_count; ++i) { - if (!ir_call_param(callinstr, params.v[i])) - goto error; + for (i = 0; i < vec_size(params); ++i) { + ir_call_param(callinstr, params[i]); } *out = ir_call_value(callinstr); self->expression.outr = *out; - MEM_VECTOR_CLEAR(¶ms, v); + vec_free(params); return true; error: - MEM_VECTOR_CLEAR(¶ms, v); + vec_free(params); return false; }