X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=ast.c;h=3a4f1d7b2782f39983174d686a889a9f1e497dae;hp=96fdf65382853a97a1df5ad89ac953bf1a3d1612;hb=36c5722273f1ea87603621c6ee20b7178a7a641b;hpb=0c8bacd134281dde39d2bc9d50952ac0377e64f4 diff --git a/ast.c b/ast.c index 96fdf65..3a4f1d7 100644 --- a/ast.c +++ b/ast.c @@ -1,6 +1,7 @@ /* - * Copyright (C) 2012 + * Copyright (C) 2012, 2013 * Wolfgang Bumiller + * Dale Weiler * * 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 @@ -71,8 +72,10 @@ static void ast_expression_init(ast_expression *self, self->expression.next = NULL; self->expression.outl = NULL; self->expression.outr = NULL; - self->expression.variadic = false; self->expression.params = NULL; + self->expression.count = 0; + self->expression.flags = 0; + self->expression.varparam = NULL; } static void ast_expression_delete(ast_expression *self) @@ -107,7 +110,8 @@ ast_value* ast_value_copy(const ast_value *self) } fromex = &self->expression; selfex = &cp->expression; - selfex->variadic = fromex->variadic; + selfex->count = fromex->count; + selfex->flags = fromex->flags; for (i = 0; i < vec_size(fromex->params); ++i) { ast_value *v = ast_value_copy(fromex->params[i]); if (!v) { @@ -132,7 +136,8 @@ bool ast_type_adopt_impl(ast_expression *self, const ast_expression *other) } fromex = &other->expression; selfex = &self->expression; - selfex->variadic = fromex->variadic; + selfex->count = fromex->count; + selfex->flags = fromex->flags; for (i = 0; i < vec_size(fromex->params); ++i) { ast_value *v = ast_value_copy(fromex->params[i]); if (!v) @@ -183,7 +188,8 @@ ast_expression* ast_type_copy(lex_ctx ctx, const ast_expression *ex) else selfex->next = NULL; - selfex->variadic = fromex->variadic; + selfex->count = fromex->count; + selfex->flags = fromex->flags; for (i = 0; i < vec_size(fromex->params); ++i) { ast_value *v = ast_value_copy(fromex->params[i]); if (!v) { @@ -199,14 +205,20 @@ ast_expression* ast_type_copy(lex_ctx ctx, const ast_expression *ex) bool ast_compare_type(ast_expression *a, ast_expression *b) { + if (a->expression.vtype == TYPE_NIL || + b->expression.vtype == TYPE_NIL) + return true; if (a->expression.vtype != b->expression.vtype) return false; if (!a->expression.next != !b->expression.next) return false; if (vec_size(a->expression.params) != vec_size(b->expression.params)) return false; - if (a->expression.variadic != b->expression.variadic) + if ((a->expression.flags & AST_FLAG_TYPE_MASK) != + (b->expression.flags & AST_FLAG_TYPE_MASK) ) + { return false; + } if (vec_size(a->expression.params)) { size_t i; for (i = 0; i < vec_size(a->expression.params); ++i) { @@ -334,6 +346,9 @@ ast_value* ast_value_new(lex_ctx ctx, const char *name, int t) self->setter = NULL; self->getter = NULL; + self->desc = NULL; + + self->argcounter = NULL; return self; } @@ -342,6 +357,8 @@ void ast_value_delete(ast_value* self) { if (self->name) mem_d((void*)self->name); + if (self->argcounter) + mem_d((void*)self->argcounter); if (self->hasvalue) { switch (self->expression.vtype) { @@ -361,6 +378,10 @@ void ast_value_delete(ast_value* self) } if (self->ir_values) mem_d(self->ir_values); + + if (self->desc) + mem_d(self->desc); + ast_expression_delete((ast_expression*)self); mem_d(self); } @@ -393,8 +414,13 @@ ast_binary* ast_binary_new(lex_ctx ctx, int op, if (op >= INSTR_EQ_F && op <= INSTR_GT) self->expression.vtype = TYPE_FLOAT; - else if (op == INSTR_AND || op == INSTR_OR || - op == INSTR_BITAND || op == INSTR_BITOR) + else if (op == INSTR_AND || op == INSTR_OR) { + if (OPTS_FLAG(PERL_LOGIC)) + ast_type_adopt(self, right); + else + self->expression.vtype = TYPE_FLOAT; + } + else if (op == INSTR_BITAND || op == INSTR_BITOR) self->expression.vtype = TYPE_FLOAT; else if (op == INSTR_MUL_VF || op == INSTR_MUL_FV) self->expression.vtype = TYPE_VECTOR; @@ -429,16 +455,10 @@ ast_binstore* ast_binstore_new(lex_ctx ctx, int storop, int op, self->keep_dest = false; - self->expression.vtype = left->expression.vtype; - if (left->expression.next) { - self->expression.next = ast_type_copy(ctx, left); - if (!self->expression.next) { - ast_delete(self); - return NULL; - } + if (!ast_type_adopt(self, left)) { + ast_delete(self); + return NULL; } - else - self->expression.next = NULL; return self; } @@ -473,7 +493,7 @@ ast_unary* ast_unary_new(lex_ctx ctx, int op, void ast_unary_delete(ast_unary *self) { - ast_unref(self->operand); + if (self->operand) ast_unref(self->operand); ast_expression_delete((ast_expression*)self); mem_d(self); } @@ -567,7 +587,8 @@ ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int fiel self->expression.next = ast_shallow_type(ctx, TYPE_FLOAT); } - self->owner = owner; + self->rvalue = false; + self->owner = owner; ast_propagate_effects(self, owner); self->field = field; @@ -593,6 +614,14 @@ void ast_member_delete(ast_member *self) mem_d(self); } +bool ast_member_set_name(ast_member *self, const char *name) +{ + if (self->name) + mem_d((void*)self->name); + self->name = util_strdup(name); + return !!self->name; +} + ast_array_index* ast_array_index_new(lex_ctx ctx, ast_expression *array, ast_expression *index) { ast_expression *outtype; @@ -672,6 +701,7 @@ void ast_ifthen_delete(ast_ifthen *self) ast_ternary* ast_ternary_new(lex_ctx ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse) { + ast_expression *exprtype = ontrue; ast_instantiate(ast_ternary, ctx, ast_ternary_delete); /* This time NEITHER must be NULL */ if (!ontrue || !onfalse) { @@ -687,7 +717,9 @@ ast_ternary* ast_ternary_new(lex_ctx ctx, ast_expression *cond, ast_expression * ast_propagate_effects(self, ontrue); ast_propagate_effects(self, onfalse); - if (!ast_type_adopt(self, ontrue)) { + if (ontrue->expression.vtype == TYPE_NIL) + exprtype = onfalse; + if (!ast_type_adopt(self, exprtype)) { ast_ternary_delete(self); return NULL; } @@ -697,17 +729,20 @@ ast_ternary* ast_ternary_new(lex_ctx ctx, ast_expression *cond, ast_expression * void ast_ternary_delete(ast_ternary *self) { - ast_unref(self->cond); - ast_unref(self->on_true); - ast_unref(self->on_false); + /* the if()s are only there because computed-gotos can set them + * to NULL + */ + if (self->cond) ast_unref(self->cond); + if (self->on_true) ast_unref(self->on_true); + if (self->on_false) ast_unref(self->on_false); ast_expression_delete((ast_expression*)self); mem_d(self); } ast_loop* ast_loop_new(lex_ctx ctx, ast_expression *initexpr, - ast_expression *precond, - ast_expression *postcond, + ast_expression *precond, bool pre_not, + ast_expression *postcond, bool post_not, ast_expression *increment, ast_expression *body) { @@ -720,6 +755,9 @@ ast_loop* ast_loop_new(lex_ctx ctx, self->increment = increment; self->body = body; + self->pre_not = pre_not; + self->post_not = post_not; + if (initexpr) ast_propagate_effects(self, initexpr); if (precond) @@ -750,12 +788,13 @@ void ast_loop_delete(ast_loop *self) mem_d(self); } -ast_breakcont* ast_breakcont_new(lex_ctx ctx, bool iscont) +ast_breakcont* ast_breakcont_new(lex_ctx ctx, bool iscont, unsigned int levels) { ast_instantiate(ast_breakcont, ctx, ast_breakcont_delete); ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_breakcont_codegen); self->is_continue = iscont; + self->levels = levels; return self; } @@ -795,14 +834,17 @@ void ast_switch_delete(ast_switch *self) mem_d(self); } -ast_label* ast_label_new(lex_ctx ctx, const char *name) +ast_label* ast_label_new(lex_ctx ctx, const char *name, bool undefined) { ast_instantiate(ast_label, ctx, ast_label_delete); ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_label_codegen); - self->name = util_strdup(name); - self->irblock = NULL; - self->gotos = NULL; + self->expression.vtype = TYPE_NOEXPR; + + self->name = util_strdup(name); + self->irblock = NULL; + self->gotos = NULL; + self->undefined = undefined; return self; } @@ -848,18 +890,19 @@ ast_call* ast_call_new(lex_ctx ctx, ast_expression *funcexpr) { ast_instantiate(ast_call, ctx, ast_call_delete); + if (!funcexpr->expression.next) { + compile_error(ctx, "not a function"); + mem_d(self); + return NULL; + } ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_call_codegen); ast_side_effects(self) = true; - self->params = NULL; - self->func = funcexpr; + self->params = NULL; + self->func = funcexpr; + self->va_count = NULL; -/* - self->expression.vtype = funcexpr->expression.next->expression.vtype; - if (funcexpr->expression.next->expression.next) - self->expression.next = ast_type_copy(ctx, funcexpr->expression.next->expression.next); -*/ ast_type_adopt(self, funcexpr->expression.next); return self; @@ -875,12 +918,17 @@ void ast_call_delete(ast_call *self) if (self->func) ast_unref(self->func); + if (self->va_count) + ast_unref(self->va_count); + ast_expression_delete((ast_expression*)self); mem_d(self); } bool ast_call_check_types(ast_call *self) { + char texp[1024]; + char tgot[1024]; size_t i; bool retval = true; const ast_expression *func = self->func; @@ -889,9 +937,8 @@ bool ast_call_check_types(ast_call *self) 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]))) { - char texp[1024]; - char tgot[1024]; + if (!ast_compare_type(self->params[i], (ast_expression*)(func->expression.params[i]))) + { ast_type_to_string(self->params[i], tgot, sizeof(tgot)); ast_type_to_string((ast_expression*)func->expression.params[i], texp, sizeof(texp)); compile_error(ast_ctx(self), "invalid type for parameter %u in function call: expected %s, got %s", @@ -900,6 +947,20 @@ bool ast_call_check_types(ast_call *self) retval = false; } } + count = vec_size(self->params); + if (count > vec_size(func->expression.params) && func->expression.varparam) { + for (; i < count; ++i) { + if (!ast_compare_type(self->params[i], func->expression.varparam)) + { + ast_type_to_string(self->params[i], tgot, sizeof(tgot)); + ast_type_to_string(func->expression.varparam, texp, sizeof(texp)); + compile_error(ast_ctx(self), "invalid type for parameter %u in function call: expected %s, got %s", + (unsigned int)(i+1), texp, tgot); + /* we don't immediately return */ + retval = false; + } + } + } return retval; } @@ -915,16 +976,10 @@ ast_store* ast_store_new(lex_ctx ctx, int op, self->dest = dest; self->source = source; - self->expression.vtype = dest->expression.vtype; - if (dest->expression.next) { - self->expression.next = ast_type_copy(ctx, dest); - if (!self->expression.next) { - ast_delete(self); - return NULL; - } + if (!ast_type_adopt(self, dest)) { + ast_delete(self); + return NULL; } - else - self->expression.next = NULL; return self; } @@ -950,10 +1005,19 @@ ast_block* ast_block_new(lex_ctx ctx) return self; } -void ast_block_add_expr(ast_block *self, ast_expression *e) +bool ast_block_add_expr(ast_block *self, ast_expression *e) { ast_propagate_effects(self, e); vec_push(self->exprs, e); + if (self->expression.next) { + ast_delete(self->expression.next); + self->expression.next = NULL; + } + if (!ast_type_adopt(self, e)) { + compile_error(ast_ctx(self), "internal error: failed to adopt type"); + return false; + } + return true; } void ast_block_collect(ast_block *self, ast_expression *expr) @@ -982,14 +1046,8 @@ bool ast_block_set_type(ast_block *self, ast_expression *from) { if (self->expression.next) ast_delete(self->expression.next); - self->expression.vtype = from->expression.vtype; - if (from->expression.next) { - self->expression.next = ast_type_copy(self->expression.node.context, from->expression.next); - if (!self->expression.next) - return false; - } - else - self->expression.next = NULL; + if (!ast_type_adopt(self, from)) + return false; return true; } @@ -1019,12 +1077,16 @@ ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype) self->ir_func = NULL; self->curblock = NULL; - self->breakblock = NULL; - self->continueblock = NULL; + self->breakblocks = NULL; + self->continueblocks = NULL; vtype->hasvalue = true; vtype->constval.vfunc = self; + self->varargs = NULL; + self->argc = NULL; + self->fixedparams = NULL; + return self; } @@ -1045,6 +1107,14 @@ void ast_function_delete(ast_function *self) for (i = 0; i < vec_size(self->blocks); ++i) ast_delete(self->blocks[i]); vec_free(self->blocks); + vec_free(self->breakblocks); + vec_free(self->continueblocks); + if (self->varargs) + ast_delete(self->varargs); + if (self->argc) + ast_delete(self->argc); + if (self->fixedparams) + ast_unref(self->fixedparams); mem_d(self); } @@ -1054,8 +1124,12 @@ const char* ast_function_label(ast_function *self, const char *prefix) size_t len; char *from; - if (!opts_dump && !opts_dumpfin) + if (!OPTS_OPTION_BOOL(OPTION_DUMP) && + !OPTS_OPTION_BOOL(OPTION_DUMPFIN) && + !OPTS_OPTION_BOOL(OPTION_DEBUG)) + { return NULL; + } id = (self->labelcount++); len = strlen(prefix); @@ -1063,10 +1137,10 @@ const char* ast_function_label(ast_function *self, const char *prefix) from = self->labelbuf + sizeof(self->labelbuf)-1; *from-- = 0; do { - unsigned int digit = id % 10; - *from = digit + '0'; + *from-- = (id%10) + '0'; id /= 10; } while (id); + ++from; memcpy(from - len, prefix, len); return from - len; } @@ -1087,12 +1161,15 @@ void _ast_codegen_output_type(ast_expression_common *self, ir_value *out) } #define codegen_output_type(a,o) (_ast_codegen_output_type(&((a)->expression),(o))) -#define codegen_output_type_expr(a,o) (_ast_codegen_output_type(a,(o))) bool ast_value_codegen(ast_value *self, ast_function *func, bool lvalue, ir_value **out) { (void)func; (void)lvalue; + if (self->expression.vtype == TYPE_NIL) { + *out = func->ir_func->owner->nil; + return true; + } /* NOTE: This is the codegen for a variable used in an expression. * It is not the codegen to generate the value. For this purpose, * ast_local_codegen and ast_global_codegen are to be used before this @@ -1101,9 +1178,9 @@ bool ast_value_codegen(ast_value *self, ast_function *func, bool lvalue, ir_valu * on all the globals. */ if (!self->ir_v) { - char typename[1024]; - ast_type_to_string((ast_expression*)self, typename, sizeof(typename)); - compile_error(ast_ctx(self), "ast_value used before generated %s %s", typename, self->name); + char tname[1024]; /* typename is reserved in C++ */ + ast_type_to_string((ast_expression*)self, tname, sizeof(tname)); + compile_error(ast_ctx(self), "ast_value used before generated %s %s", tname, self->name); return false; } *out = self->ir_v; @@ -1114,6 +1191,11 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) { ir_value *v = NULL; + if (self->expression.vtype == TYPE_NIL) { + compile_error(ast_ctx(self), "internal error: trying to generate a variable of TYPE_NIL"); + return false; + } + if (self->hasvalue && self->expression.vtype == TYPE_FUNCTION) { ir_function *func = ir_builder_create_function(ir, self->name, self->expression.next->expression.vtype); @@ -1124,6 +1206,8 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) self->constval.vfunc->ir_func = func; self->ir_v = func->value; + if (self->expression.flags & AST_FLAG_INCLUDE_DEF) + self->ir_v->flags |= IR_FLAG_INCLUDE_DEF; /* The function is filled later on ast_function_codegen... */ return true; } @@ -1151,7 +1235,7 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) } /* we are lame now - considering the way QC works we won't tolerate arrays > 1024 elements */ - if (!array->expression.count || array->expression.count > opts_max_array_size) + if (!array->expression.count || array->expression.count > OPTS_OPTION_U32(OPTION_MAX_ARRAY_SIZE)) compile_error(ast_ctx(self), "Invalid array of size %lu", (unsigned long)array->expression.count); elemtype = &array->expression.next->expression; @@ -1163,7 +1247,11 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) return false; } v->context = ast_ctx(self); + v->unique_life = true; + v->locked = true; array->ir_v = self->ir_v = v; + if (self->expression.flags & AST_FLAG_INCLUDE_DEF) + self->ir_v->flags |= IR_FLAG_INCLUDE_DEF; namelen = strlen(self->name); name = (char*)mem_a(namelen + 16); @@ -1180,6 +1268,10 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) return false; } array->ir_values[ai]->context = ast_ctx(self); + array->ir_values[ai]->unique_life = true; + array->ir_values[ai]->locked = true; + if (self->expression.flags & AST_FLAG_INCLUDE_DEF) + self->ir_values[ai]->flags |= IR_FLAG_INCLUDE_DEF; } mem_d(name); } @@ -1190,6 +1282,8 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) return false; v->context = ast_ctx(self); self->ir_v = v; + if (self->expression.flags & AST_FLAG_INCLUDE_DEF) + self->ir_v->flags |= IR_FLAG_INCLUDE_DEF; } return true; } @@ -1203,7 +1297,7 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) int vtype = elemtype->vtype; /* same as with field arrays */ - if (!self->expression.count || self->expression.count > opts_max_array_size) + if (!self->expression.count || self->expression.count > OPTS_OPTION_U32(OPTION_MAX_ARRAY_SIZE)) compile_error(ast_ctx(self), "Invalid array of size %lu", (unsigned long)self->expression.count); v = ir_builder_create_global(ir, self->name, vtype); @@ -1212,6 +1306,10 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) return false; } v->context = ast_ctx(self); + v->unique_life = true; + v->locked = true; + if (self->expression.flags & AST_FLAG_INCLUDE_DEF) + v->flags |= IR_FLAG_INCLUDE_DEF; namelen = strlen(self->name); name = (char*)mem_a(namelen + 16); @@ -1228,6 +1326,10 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) return false; } self->ir_values[ai]->context = ast_ctx(self); + self->ir_values[ai]->unique_life = true; + self->ir_values[ai]->locked = true; + if (self->expression.flags & AST_FLAG_INCLUDE_DEF) + self->ir_values[ai]->flags |= IR_FLAG_INCLUDE_DEF; } mem_d(name); } @@ -1290,6 +1392,8 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) /* link us to the ir_value */ v->cvq = self->cvq; self->ir_v = v; + if (self->expression.flags & AST_FLAG_INCLUDE_DEF) + self->ir_v->flags |= IR_FLAG_INCLUDE_DEF; return true; error: /* clean up */ @@ -1300,6 +1404,12 @@ error: /* clean up */ bool ast_local_codegen(ast_value *self, ir_function *func, bool param) { ir_value *v = NULL; + + if (self->expression.vtype == TYPE_NIL) { + compile_error(ast_ctx(self), "internal error: trying to generate a variable of TYPE_NIL"); + return false; + } + if (self->hasvalue && self->expression.vtype == TYPE_FUNCTION) { /* Do we allow local functions? I think not... @@ -1316,13 +1426,15 @@ bool ast_local_codegen(ast_value *self, ir_function *func, bool param) ast_expression_common *elemtype = &self->expression.next->expression; int vtype = elemtype->vtype; - if (param) { + func->flags |= IR_FLAG_HAS_ARRAYS; + + if (param && !(self->expression.flags & AST_FLAG_IS_VARARG)) { compile_error(ast_ctx(self), "array-parameters are not supported"); return false; } /* we are lame now - considering the way QC works we won't tolerate arrays > 1024 elements */ - if (!self->expression.count || self->expression.count > opts_max_array_size) { + if (!self->expression.count || self->expression.count > OPTS_OPTION_U32(OPTION_MAX_ARRAY_SIZE)) { compile_error(ast_ctx(self), "Invalid array of size %lu", (unsigned long)self->expression.count); } @@ -1338,6 +1450,8 @@ bool ast_local_codegen(ast_value *self, ir_function *func, bool param) return false; } v->context = ast_ctx(self); + v->unique_life = true; + v->locked = true; namelen = strlen(self->name); name = (char*)mem_a(namelen + 16); @@ -1352,6 +1466,8 @@ bool ast_local_codegen(ast_value *self, ir_function *func, bool param) return false; } self->ir_values[ai]->context = ast_ctx(self); + self->ir_values[ai]->unique_life = true; + self->ir_values[ai]->locked = true; } } else @@ -1421,14 +1537,14 @@ bool ast_generate_accessors(ast_value *self, ir_builder *ir) } } - options_set(opts_warn, WARN_USED_UNINITIALIZED, false); + opts_set(opts.warn, WARN_USED_UNINITIALIZED, false); if (self->setter) { if (!ast_global_codegen (self->setter, ir, false) || !ast_function_codegen(self->setter->constval.vfunc, ir) || !ir_function_finalize(self->setter->constval.vfunc->ir_func)) { compile_error(ast_ctx(self), "internal error: failed to generate setter for `%s`", self->name); - options_set(opts_warn, WARN_USED_UNINITIALIZED, warn); + opts_set(opts.warn, WARN_USED_UNINITIALIZED, warn); return false; } } @@ -1438,14 +1554,14 @@ bool ast_generate_accessors(ast_value *self, ir_builder *ir) !ir_function_finalize(self->getter->constval.vfunc->ir_func)) { compile_error(ast_ctx(self), "internal error: failed to generate getter for `%s`", self->name); - options_set(opts_warn, WARN_USED_UNINITIALIZED, warn); + opts_set(opts.warn, WARN_USED_UNINITIALIZED, warn); return false; } } for (i = 0; i < self->expression.count; ++i) { vec_free(self->ir_values[i]->life); } - options_set(opts_warn, WARN_USED_UNINITIALIZED, warn); + opts_set(opts.warn, WARN_USED_UNINITIALIZED, warn); return true; } @@ -1453,7 +1569,8 @@ bool ast_function_codegen(ast_function *self, ir_builder *ir) { ir_function *irf; ir_value *dummy; - ast_expression_common *ec; + ast_expression_common *ec; + ast_expression_codegen *cgen; size_t i; (void)ir; @@ -1478,6 +1595,12 @@ bool ast_function_codegen(ast_function *self, ir_builder *ir) } } + if (self->varargs) { + if (!ast_local_codegen(self->varargs, self->ir_func, true)) + return false; + irf->max_varargs = self->varargs->expression.count; + } + if (self->builtin) { irf->builtin = self->builtin; return true; @@ -1488,27 +1611,51 @@ bool ast_function_codegen(ast_function *self, ir_builder *ir) return false; } - self->curblock = ir_function_create_block(ast_ctx(self), irf, "entry"); + irf->first = self->curblock = ir_function_create_block(ast_ctx(self), irf, "entry"); if (!self->curblock) { compile_error(ast_ctx(self), "failed to allocate entry block for `%s`", self->name); return false; } + if (self->argc) { + ir_value *va_count; + ir_value *fixed; + ir_value *sub; + if (!ast_local_codegen(self->argc, self->ir_func, true)) + return false; + cgen = self->argc->expression.codegen; + if (!(*cgen)((ast_expression*)(self->argc), self, false, &va_count)) + return false; + cgen = self->fixedparams->expression.codegen; + if (!(*cgen)((ast_expression*)(self->fixedparams), self, false, &fixed)) + return false; + sub = ir_block_create_binop(self->curblock, ast_ctx(self), + ast_function_label(self, "va_count"), INSTR_SUB_F, + ir_builder_get_va_count(ir), fixed); + if (!sub) + return false; + if (!ir_block_create_store_op(self->curblock, ast_ctx(self), INSTR_STORE_F, + va_count, sub)) + { + return false; + } + } + 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)) + cgen = self->blocks[i]->expression.codegen; + if (!(*cgen)((ast_expression*)self->blocks[i], self, false, &dummy)) return false; } /* TODO: check return types */ - if (!self->curblock->is_return) + if (!self->curblock->final) { if (!self->vtype->expression.next || self->vtype->expression.next->expression.vtype == TYPE_VOID) { return ir_block_create_return(self->curblock, ast_ctx(self), NULL); } - else if (vec_size(self->curblock->entries)) + else if (vec_size(self->curblock->entries) || self->curblock == irf->first) { /* error("missing return"); */ if (compile_warning(ast_ctx(self), WARN_MISSING_RETURN_VALUES, @@ -1559,7 +1706,7 @@ bool ast_block_codegen(ast_block *self, ast_function *func, bool lvalue, ir_valu for (i = 0; i < vec_size(self->locals); ++i) { if (!ast_local_codegen(self->locals[i], func->ir_func, false)) { - if (opts_debug) + if (OPTS_OPTION_BOOL(OPTION_DEBUG)) compile_error(ast_ctx(self), "failed to generate local `%s`", self->locals[i]->name); return false; } @@ -1567,11 +1714,13 @@ bool ast_block_codegen(ast_block *self, ast_function *func, bool lvalue, ir_valu for (i = 0; i < vec_size(self->exprs); ++i) { - ast_expression_codegen *gen = self->exprs[i]->expression.codegen; + ast_expression_codegen *gen; if (func->curblock->final && !ast_istype(self->exprs[i], ast_label)) { - compile_error(ast_ctx(self->exprs[i]), "unreachable statement"); - return false; + if (compile_warning(ast_ctx(self->exprs[i]), WARN_UNREACHABLE_CODE, "unreachable statement")) + return false; + continue; } + gen = self->exprs[i]->expression.codegen; if (!(*gen)(self->exprs[i], func, false, out)) return false; } @@ -1639,7 +1788,7 @@ bool ast_store_codegen(ast_store *self, ast_function *func, bool lvalue, ir_valu if (!(*cgen)((ast_expression*)(self->source), func, false, &right)) return false; - call = ir_block_create_call(func->curblock, ast_ctx(self), ast_function_label(func, "store"), funval); + call = ir_block_create_call(func->curblock, ast_ctx(self), ast_function_label(func, "store"), funval, false); if (!call) return false; ir_call_param(call, iridx); @@ -1694,7 +1843,7 @@ bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_va return true; } - if (OPTS_FLAG(SHORT_LOGIC) && + if ((OPTS_FLAG(SHORT_LOGIC) || OPTS_FLAG(PERL_LOGIC)) && (self->op == INSTR_AND || self->op == INSTR_OR)) { /* short circuit evaluation */ @@ -1702,64 +1851,42 @@ bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_va ir_block *from_left, *from_right; ir_instr *phi; size_t merge_id; - uint16_t notop; - - /* Note about casting to true boolean values: - * We use a single NOT for sub expressions, and an - * overall NOT at the end, and for that purpose swap - * all the jump conditions in order for the NOT to get - * doubled. - * ie: (a && b) usually becomes (!!a ? !!b : !!a) - * but we translate this to (!(!a ? !a : !b)) - */ + /* prepare end-block */ merge_id = vec_size(func->ir_func->blocks); - merge = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "sce_merge")); + merge = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "sce_merge")); + /* generate the left expression */ cgen = self->left->expression.codegen; if (!(*cgen)((ast_expression*)(self->left), func, false, &left)) return false; - if (!OPTS_FLAG(PERL_LOGIC)) { - notop = type_not_instr[left->vtype]; - if (notop == AINSTR_END) { - compile_error(ast_ctx(self), "don't know how to cast to bool..."); - return false; - } - left = ir_block_create_unary(func->curblock, ast_ctx(self), - ast_function_label(func, "sce_not"), - notop, - left); - } + /* remember the block */ from_left = func->curblock; + /* create a new block for the right expression */ other = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "sce_other")); - if ( !(self->op == INSTR_OR) != !OPTS_FLAG(PERL_LOGIC) ) { + if (self->op == INSTR_AND) { + /* on AND: left==true -> other */ if (!ir_block_create_if(func->curblock, ast_ctx(self), left, other, merge)) return false; } else { + /* on OR: left==false -> other */ if (!ir_block_create_if(func->curblock, ast_ctx(self), left, merge, other)) return false; } /* use the likely flag */ vec_last(func->curblock->instr)->likely = true; + /* enter the right-expression's block */ func->curblock = other; + /* generate */ cgen = self->right->expression.codegen; if (!(*cgen)((ast_expression*)(self->right), func, false, &right)) return false; - if (!OPTS_FLAG(PERL_LOGIC)) { - notop = type_not_instr[right->vtype]; - if (notop == AINSTR_END) { - compile_error(ast_ctx(self), "don't know how to cast to bool..."); - return false; - } - right = ir_block_create_unary(func->curblock, ast_ctx(self), - ast_function_label(func, "sce_not"), - notop, - right); - } + /* remember block */ from_right = func->curblock; + /* jump to the merge block */ if (!ir_block_create_jump(func->curblock, ast_ctx(self), merge)) return false; @@ -1767,24 +1894,52 @@ bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_va vec_push(func->ir_func->blocks, merge); func->curblock = merge; - phi = ir_block_create_phi(func->curblock, ast_ctx(self), ast_function_label(func, "sce_value"), TYPE_FLOAT); + phi = ir_block_create_phi(func->curblock, ast_ctx(self), + ast_function_label(func, "sce_value"), + self->expression.vtype); ir_phi_add(phi, from_left, left); ir_phi_add(phi, from_right, right); *out = ir_phi_value(phi); + if (!*out) + return false; + if (!OPTS_FLAG(PERL_LOGIC)) { - notop = type_not_instr[(*out)->vtype]; - if (notop == AINSTR_END) { - compile_error(ast_ctx(self), "don't know how to cast to bool..."); - return false; + /* cast-to-bool */ + if (OPTS_FLAG(CORRECT_LOGIC) && (*out)->vtype == TYPE_VECTOR) { + *out = ir_block_create_unary(func->curblock, ast_ctx(self), + ast_function_label(func, "sce_bool_v"), + INSTR_NOT_V, *out); + if (!*out) + return false; + *out = ir_block_create_unary(func->curblock, ast_ctx(self), + ast_function_label(func, "sce_bool"), + INSTR_NOT_F, *out); + if (!*out) + return false; + } + else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && (*out)->vtype == TYPE_STRING) { + *out = ir_block_create_unary(func->curblock, ast_ctx(self), + ast_function_label(func, "sce_bool_s"), + INSTR_NOT_S, *out); + if (!*out) + return false; + *out = ir_block_create_unary(func->curblock, ast_ctx(self), + ast_function_label(func, "sce_bool"), + INSTR_NOT_F, *out); + if (!*out) + return false; + } + else { + *out = ir_block_create_binop(func->curblock, ast_ctx(self), + ast_function_label(func, "sce_bool"), + INSTR_AND, *out, *out); + if (!*out) + return false; } - *out = ir_block_create_unary(func->curblock, ast_ctx(self), - ast_function_label(func, "sce_final_not"), - notop, - *out); } - if (!*out) - return false; + self->expression.outr = *out; + codegen_output_type(self, *out); return true; } @@ -1801,6 +1956,7 @@ bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_va if (!*out) return false; self->expression.outr = *out; + codegen_output_type(self, *out); return true; } @@ -1877,7 +2033,7 @@ bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, i if (!(*cgen)((ast_expression*)(arr->setter), func, true, &funval)) return false; - call = ir_block_create_call(func->curblock, ast_ctx(self), ast_function_label(func, "store"), funval); + call = ir_block_create_call(func->curblock, ast_ctx(self), ast_function_label(func, "store"), funval, false); if (!call) return false; ir_call_param(call, iridx); @@ -2010,7 +2166,9 @@ bool ast_entfield_codegen(ast_entfield *self, ast_function *func, bool lvalue, i } else { *out = ir_block_create_load_from_ent(func->curblock, ast_ctx(self), ast_function_label(func, "efv"), ent, field, self->expression.vtype); + /* Done AFTER error checking: codegen_output_type(self, *out); + */ } if (!*out) { compile_error(ast_ctx(self), "failed to create %s instruction (output type %s)", @@ -2018,6 +2176,8 @@ bool ast_entfield_codegen(ast_entfield *self, ast_function *func, bool lvalue, i type_name[self->expression.vtype]); return false; } + if (!lvalue) + codegen_output_type(self, *out); if (lvalue) self->expression.outl = *out; @@ -2034,14 +2194,17 @@ bool ast_member_codegen(ast_member *self, ast_function *func, bool lvalue, ir_va ir_value *vec; /* in QC this is always an lvalue */ - (void)lvalue; + if (lvalue && self->rvalue) { + compile_error(ast_ctx(self), "not an l-value (member access)"); + return false; + } if (self->expression.outl) { *out = self->expression.outl; return true; } cgen = self->owner->expression.codegen; - if (!(*cgen)((ast_expression*)(self->owner), func, true, &vec)) + if (!(*cgen)((ast_expression*)(self->owner), func, false, &vec)) return false; if (vec->vtype != TYPE_VECTOR && @@ -2105,13 +2268,15 @@ bool ast_array_index_codegen(ast_array_index *self, ast_function *func, bool lva if (!(*cgen)((ast_expression*)(arr->getter), func, true, &funval)) return false; - call = ir_block_create_call(func->curblock, ast_ctx(self), ast_function_label(func, "fetch"), funval); + call = ir_block_create_call(func->curblock, ast_ctx(self), ast_function_label(func, "fetch"), funval, false); if (!call) return false; ir_call_param(call, iridx); *out = ir_call_value(call); self->expression.outr = *out; + (*out)->vtype = self->expression.vtype; + codegen_output_type(self, *out); return true; } @@ -2137,6 +2302,8 @@ bool ast_array_index_codegen(ast_array_index *self, ast_function *func, bool lva compile_error(ast_ctx(self), "array indexing here needs an integer constant"); return false; } + (*out)->vtype = self->expression.vtype; + codegen_output_type(self, *out); return true; } @@ -2147,7 +2314,7 @@ bool ast_ifthen_codegen(ast_ifthen *self, ast_function *func, bool lvalue, ir_va ir_value *condval; ir_value *dummy; - ir_block *cond = func->curblock; + ir_block *cond; ir_block *ontrue; ir_block *onfalse; ir_block *ontrue_endblock = NULL; @@ -2331,15 +2498,18 @@ bool ast_ternary_codegen(ast_ternary *self, ast_function *func, bool lvalue, ir_ /* Here, now, we need a PHI node * but first some sanity checking... */ - if (trueval->vtype != falseval->vtype) { + if (trueval->vtype != falseval->vtype && trueval->vtype != TYPE_NIL && falseval->vtype != TYPE_NIL) { /* error("ternary with different types on the two sides"); */ + compile_error(ast_ctx(self), "internal error: ternary operand types invalid"); return false; } /* create PHI */ - phi = ir_block_create_phi(merge, ast_ctx(self), ast_function_label(func, "phi"), trueval->vtype); - if (!phi) + phi = ir_block_create_phi(merge, ast_ctx(self), ast_function_label(func, "phi"), self->expression.vtype); + if (!phi) { + compile_error(ast_ctx(self), "internal error: failed to generate phi node"); return false; + } ir_phi_add(phi, ontrue_out, trueval); ir_phi_add(phi, onfalse_out, falseval); @@ -2376,9 +2546,6 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value ir_block *bcontinue = NULL; ir_block *bbreak = NULL; - ir_block *old_bcontinue = NULL; - ir_block *old_bbreak = NULL; - ir_block *tmpblock = NULL; (void)lvalue; @@ -2471,12 +2638,11 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value /* enter */ func->curblock = bbody; - old_bbreak = func->breakblock; - old_bcontinue = func->continueblock; - func->breakblock = bbreak; - func->continueblock = bcontinue; - if (!func->continueblock) - func->continueblock = bbody; + vec_push(func->breakblocks, bbreak); + if (bcontinue) + vec_push(func->continueblocks, bcontinue); + else + vec_push(func->continueblocks, bbody); /* generate */ if (self->body) { @@ -2486,8 +2652,8 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value } end_bbody = func->curblock; - func->breakblock = old_bbreak; - func->continueblock = old_bcontinue; + vec_pop(func->breakblocks); + vec_pop(func->continueblocks); } /* post-loop-condition */ @@ -2539,6 +2705,11 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value else if (bpostcond) ontrue = bpostcond; else ontrue = bprecond; onfalse = bout; + if (self->pre_not) { + tmpblock = ontrue; + ontrue = onfalse; + onfalse = tmpblock; + } if (!ir_block_create_if(end_bprecond, ast_ctx(self), precond, ontrue, onfalse)) return false; } @@ -2574,6 +2745,11 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value else if (bincrement) ontrue = bincrement; else ontrue = bpostcond; onfalse = bout; + if (self->post_not) { + tmpblock = ontrue; + ontrue = onfalse; + onfalse = tmpblock; + } if (!ir_block_create_if(end_bpostcond, ast_ctx(self), postcond, ontrue, onfalse)) return false; } @@ -2603,9 +2779,9 @@ bool ast_breakcont_codegen(ast_breakcont *self, ast_function *func, bool lvalue, self->expression.outr = (ir_value*)1; if (self->is_continue) - target = func->continueblock; + target = func->continueblocks[vec_size(func->continueblocks)-1-self->levels]; else - target = func->breakblock; + target = func->breakblocks[vec_size(func->breakblocks)-1-self->levels]; if (!target) { compile_error(ast_ctx(self), "%s is lacking a target block", (self->is_continue ? "continue" : "break")); @@ -2621,12 +2797,13 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va { ast_expression_codegen *cgen; - ast_switch_case *def_case = NULL; - ir_block *def_bfall = NULL; + ast_switch_case *def_case = NULL; + ir_block *def_bfall = NULL; + ir_block *def_bfall_to = NULL; + bool set_def_bfall_to = false; 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; @@ -2669,8 +2846,7 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va return false; /* setup the break block */ - old_break = func->breakblock; - func->breakblock = bout; + vec_push(func->breakblocks, bout); /* Now create all cases */ for (c = 0; c < vec_size(self->cases); ++c) { @@ -2696,6 +2872,10 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va bnot = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "not_case")); if (!bcase || !bnot) return false; + if (set_def_bfall_to) { + set_def_bfall_to = false; + def_bfall_to = bcase; + } if (!ir_block_create_if(func->curblock, ast_ctx(self), cond, bcase, bnot)) return false; @@ -2725,6 +2905,8 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va bfall = NULL; /* remember which case it was */ def_case = swcase; + /* And the next case will be remembered */ + set_def_bfall_to = true; } } @@ -2753,6 +2935,13 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va cgen = def_case->code->expression.codegen; if (!(*cgen)((ast_expression*)def_case->code, func, false, &dummy)) return false; + + /* see if we need to fall through */ + if (def_bfall_to && !func->curblock->final) + { + if (!ir_block_create_jump(func->curblock, ast_ctx(self), def_bfall_to)) + return false; + } } /* Jump from the last bnot to bout */ @@ -2762,7 +2951,7 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va func->curblock = bout; /* restore the break block */ - func->breakblock = old_break; + vec_pop(func->breakblocks); /* Move 'bout' to the end, it's nicer */ vec_remove(func->ir_func->blocks, bout_id, 1); @@ -2776,6 +2965,11 @@ bool ast_label_codegen(ast_label *self, ast_function *func, bool lvalue, ir_valu size_t i; ir_value *dummy; + if (self->undefined) { + compile_error(ast_ctx(self), "internal error: ast_label never defined"); + return false; + } + *out = NULL; if (lvalue) { compile_error(ast_ctx(self), "internal error: ast_label cannot be an lvalue"); @@ -2817,14 +3011,14 @@ bool ast_goto_codegen(ast_goto *self, ast_function *func, bool lvalue, ir_value if (self->irblock_from) { /* we already tried once, this is the callback */ self->irblock_from->final = false; - if (!ir_block_create_jump(self->irblock_from, ast_ctx(self), self->target->irblock)) { + if (!ir_block_create_goto(self->irblock_from, ast_ctx(self), self->target->irblock)) { compile_error(ast_ctx(self), "failed to generate goto to `%s`", self->name); return false; } } else { - if (!ir_block_create_jump(func->curblock, ast_ctx(self), self->target->irblock)) { + if (!ir_block_create_goto(func->curblock, ast_ctx(self), self->target->irblock)) { compile_error(ast_ctx(self), "failed to generate goto to `%s`", self->name); return false; } @@ -2885,7 +3079,23 @@ bool ast_call_codegen(ast_call *self, ast_function *func, bool lvalue, ir_value vec_push(params, param); } - callinstr = ir_block_create_call(func->curblock, ast_ctx(self), ast_function_label(func, "call"), funval); + /* varargs counter */ + if (self->va_count) { + ir_value *va_count; + ir_builder *builder = func->curblock->owner->owner; + cgen = self->va_count->expression.codegen; + if (!(*cgen)((ast_expression*)(self->va_count), func, false, &va_count)) + return false; + if (!ir_block_create_store_op(func->curblock, ast_ctx(self), INSTR_STORE_F, + ir_builder_get_va_count(builder), va_count)) + { + return false; + } + } + + callinstr = ir_block_create_call(func->curblock, ast_ctx(self), + ast_function_label(func, "call"), + funval, !!(self->func->expression.flags & AST_FLAG_NORETURN)); if (!callinstr) goto error;