( (ast_node*)self )->node.destroy = (ast_node_delete*)destroyfn
/* It must not be possible to get here. */
-static void _ast_node_destroy(ast_node *self)
+static GMQCC_NORETURN void _ast_node_destroy(ast_node *self)
{
fprintf(stderr, "ast node missing destroy()\n");
abort();
ast_unref(self->cond);
if (self->on_true)
ast_unref(self->on_true);
- if (self->on_flase)
+ if (self->on_false)
ast_unref(self->on_false);
ast_expression_delete((ast_expression*)self);
mem_d(self);
ast_expression *initexpr,
ast_expression *precond,
ast_expression *postcond,
- ast_expression *increment)
+ ast_expression *increment,
+ ast_expression *body)
{
ast_instantiate(ast_loop, ctx, ast_loop_delete);
ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_loop_codegen);
self->precond = precond;
self->postcond = postcond;
self->increment = increment;
+ self->body = body;
return self;
}
ast_unref(self->postcond);
if (self->increment)
ast_unref(self->increment);
+ if (self->body)
+ ast_unref(self->body);
+ 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);
+
+ return self;
+}
+
+void ast_call_delete(ast_call *self)
+{
+ size_t i;
+ for (i = 0; i < self->params_count; ++i)
+ ast_unref(self->params[i]);
+ MEM_VECTOR_CLEAR(self, params);
+
+ if (self->func)
+ ast_unref(self->func);
+
ast_expression_delete((ast_expression*)self);
mem_d(self);
}
self->ir_func = NULL;
self->curblock = NULL;
+ self->breakblock = NULL;
+ self->continueblock = NULL;
+
vtype->isconst = true;
vtype->constval.vfunc = self;
ir_value *v = NULL;
if (self->isconst && self->expression.vtype == TYPE_FUNCTION)
{
- ir_function *func = ir_builder_create_function(ir, self->name);
+ ir_function *func = ir_builder_create_function(ir, self->name, self->expression.next->expression.vtype);
if (!func)
return false;
(void)out;
(void)lvalue;
- /* create blocks first, it's nicer if they're ordered */
+ /* generate the condition */
+ func->curblock = cond;
+ cgen = self->cond->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->cond), func, false, &condval))
+ return false;
+
+ /* on-true path */
if (self->on_true) {
/* create on-true block */
ontrue = ir_function_create_block(func->ir_func, ast_function_label(func, "ontrue"));
if (!ontrue)
return false;
+
+ /* enter the block */
+ func->curblock = ontrue;
+
+ /* generate */
+ cgen = self->on_true->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->on_true), func, false, &dummy))
+ return false;
} else
ontrue = NULL;
-
+
+ /* on-false path */
if (self->on_false) {
/* create on-false block */
onfalse = ir_function_create_block(func->ir_func, ast_function_label(func, "onfalse"));
if (!onfalse)
return false;
+
+ /* enter the block */
+ func->curblock = onfalse;
+
+ /* generate */
+ cgen = self->on_false->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->on_false), func, false, &dummy))
+ return false;
} else
onfalse = NULL;
+ /* Merge block were they all merge in to */
merge = ir_function_create_block(func->ir_func, ast_function_label(func, "endif"));
if (!merge)
- return NULL;
+ return false;
- /* generate the condition */
- func->curblock = cond;
- cgen = self->cond->expression.codegen;
- if (!(*cgen)((ast_expression*)(self->cond), func, false, &condval))
+ /* add jumps ot the merge block */
+ if (ontrue && !ir_block_create_jump(ontrue, merge))
+ return false;
+ if (onfalse && !ir_block_create_jump(onfalse, merge))
return false;
+ /* we create the if here, that way all blocks are ordered :)
+ */
if (!ir_block_create_if(cond, condval,
(ontrue ? ontrue : merge),
(onfalse ? onfalse : merge)))
return false;
}
- /* on-true path */
- if (ontrue) {
- /* enter the block */
- func->curblock = ontrue;
-
- /* generate */
- cgen = self->on_true->expression.codegen;
- if (!(*cgen)((ast_expression*)(self->on_true), func, false, &dummy))
- return false;
-
- /* jump to merge block */
- if (!ir_block_create_jump(ontrue, merge))
- return false;
- }
-
- /* on-false path */
- if (onfalse) {
- /* enter the block */
- func->curblock = onfalse;
-
- /* generate */
- cgen = self->on_false->expression.codegen;
- if (!(*cgen)((ast_expression*)(self->on_false), func, false, &dummy))
- return false;
-
- /* jump to merge block */
- if (!ir_block_create_jump(ontrue, merge))
- return false;
- }
-
/* Now enter the merge block */
func->curblock = merge;
/* In the following, contraty to ast_ifthen, we assume both paths exist. */
+ /* generate the condition */
+ func->curblock = cond;
+ cgen = self->cond->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->cond), func, false, &condval))
+ return false;
+
/* create on-true block */
ontrue = ir_function_create_block(func->ir_func, ast_function_label(func, "tern_T"));
if (!ontrue)
return false;
-
+ else
+ {
+ /* enter the block */
+ func->curblock = ontrue;
+
+ /* generate */
+ cgen = self->on_true->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->on_true), func, false, &trueval))
+ return false;
+ }
+
/* create on-false block */
onfalse = ir_function_create_block(func->ir_func, ast_function_label(func, "tern_F"));
if (!onfalse)
return false;
+ else
+ {
+ /* enter the block */
+ func->curblock = onfalse;
+ /* generate */
+ cgen = self->on_false->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->on_false), func, false, &falseval))
+ return false;
+ }
+
+ /* create merge block */
merge = ir_function_create_block(func->ir_func, ast_function_label(func, "tern_out"));
if (!merge)
- return NULL;
-
- /* generate the condition */
- func->curblock = cond;
- cgen = self->cond->expression.codegen;
- if (!(*cgen)((ast_expression*)(self->cond), func, false, &condval))
- return false;
-
- if (!ir_block_create_if(cond, condval, ontrue, onfalse))
- return false;
-
- /* on-true path */
- /* enter the block */
- func->curblock = ontrue;
-
- /* generate */
- cgen = self->on_true->expression.codegen;
- if (!(*cgen)((ast_expression*)(self->on_true), func, false, &trueval))
return false;
-
/* jump to merge block */
if (!ir_block_create_jump(ontrue, merge))
return false;
-
- /* on-false path */
- /* enter the block */
- func->curblock = onfalse;
-
- /* generate */
- cgen = self->on_false->expression.codegen;
- if (!(*cgen)((ast_expression*)(self->on_false), func, false, &falseval))
+ if (!ir_block_create_jump(onfalse, merge))
return false;
- /* jump to merge block */
- if (!ir_block_create_jump(ontrue, merge))
+ /* create if instruction */
+ if (!ir_block_create_if(cond, condval, ontrue, onfalse))
return false;
/* Now enter the merge block */
bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value **out)
{
+ ast_expression_codegen *cgen;
+
+ ir_value *dummy = NULL;
+ ir_value *precond = NULL;
+ ir_value *postcond = NULL;
+
+ /* Since we insert some jumps "late" so we have blocks
+ * ordered "nicely", we need to keep track of the actual end-blocks
+ * of expressions to add the jumps to.
+ */
+ ir_block *bbody = NULL, *end_bbody = NULL;
+ ir_block *bprecond = NULL, *end_bprecond = NULL;
+ ir_block *bpostcond = NULL, *end_bpostcond = NULL;
+ ir_block *bincrement = NULL, *end_bincrement = NULL;
+ ir_block *bout = NULL, *bin = NULL;
+
+ /* let's at least move the outgoing block to the end */
+ size_t bout_id;
+
+ /* 'break' and 'continue' need to be able to find the right blocks */
+ ir_block *bcontinue = NULL;
+ ir_block *bbreak = NULL;
+
+ ir_block *old_bcontinue = NULL;
+ ir_block *old_bbreak = NULL;
+
+ ir_block *tmpblock = NULL;
+
+ (void)lvalue;
+ (void)out;
+
+ /* NOTE:
+ * Should we ever need some kind of block ordering, better make this function
+ * move blocks around than write a block ordering algorithm later... after all
+ * the ast and ir should work together, not against each other.
+ */
+
+ /* initexpr doesn't get its own block, it's pointless, it could create more blocks
+ * anyway if for example it contains a ternary.
+ */
+ if (self->initexpr)
+ {
+ cgen = self->initexpr->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->initexpr), func, false, &dummy))
+ return false;
+ }
+
+ /* Store the block from which we enter this chaos */
+ bin = func->curblock;
+
+ /* The pre-loop condition needs its own block since we
+ * need to be able to jump to the start of that expression.
+ */
+ if (self->precond)
+ {
+ bprecond = ir_function_create_block(func->ir_func, ast_function_label(func, "pre_loop_cond"));
+ if (!bprecond)
+ return false;
+
+ /* the pre-loop-condition the least important place to 'continue' at */
+ bcontinue = bprecond;
+
+ /* enter */
+ func->curblock = bprecond;
+
+ /* generate */
+ cgen = self->precond->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->precond), func, false, &precond))
+ return false;
+
+ end_bprecond = func->curblock;
+ } else {
+ bprecond = end_bprecond = NULL;
+ }
+
+ /* Now the next blocks won't be ordered nicely, but we need to
+ * generate them this early for 'break' and 'continue'.
+ */
+ if (self->increment) {
+ bincrement = ir_function_create_block(func->ir_func, ast_function_label(func, "loop_increment"));
+ if (!bincrement)
+ return false;
+ bcontinue = bincrement; /* increment comes before the pre-loop-condition */
+ } else {
+ bincrement = end_bincrement = NULL;
+ }
+
+ if (self->postcond) {
+ bpostcond = ir_function_create_block(func->ir_func, ast_function_label(func, "post_loop_cond"));
+ if (!bpostcond)
+ return false;
+ bcontinue = bpostcond; /* postcond comes before the increment */
+ } else {
+ bpostcond = end_bpostcond = NULL;
+ }
+
+ bout_id = func->ir_func->blocks_count;
+ bout = ir_function_create_block(func->ir_func, ast_function_label(func, "after_loop"));
+ if (!bout)
+ return false;
+ bbreak = bout;
+
+ /* The loop body... */
+ if (self->body)
+ {
+ bbody = ir_function_create_block(func->ir_func, ast_function_label(func, "loop_body"));
+ if (!bbody)
+ return false;
+
+ /* enter */
+ func->curblock = bbody;
+
+ old_bbreak = func->breakblock;
+ old_bcontinue = func->continueblock;
+ func->breakblock = bbreak;
+ func->continueblock = bcontinue;
+
+ /* generate */
+ cgen = self->body->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->body), func, false, &dummy))
+ return false;
+
+ end_bbody = func->curblock;
+ func->breakblock = old_bbreak;
+ func->continueblock = old_bcontinue;
+ }
+
+ /* post-loop-condition */
+ if (self->postcond)
+ {
+ /* enter */
+ func->curblock = bpostcond;
+
+ /* generate */
+ cgen = self->postcond->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->postcond), func, false, &postcond))
+ return false;
+
+ end_bpostcond = func->curblock;
+ }
+
+ /* The incrementor */
+ if (self->increment)
+ {
+ /* enter */
+ func->curblock = bincrement;
+
+ /* generate */
+ cgen = self->increment->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->increment), func, false, &dummy))
+ return false;
+
+ end_bincrement = func->curblock;
+ }
+
+ /* In any case now, we continue from the outgoing block */
+ func->curblock = bout;
+
+ /* Now all blocks are in place */
+ /* From 'bin' we jump to whatever comes first */
+ if (bprecond) tmpblock = bprecond;
+ else if (bbody) tmpblock = bbody;
+ else if (bpostcond) tmpblock = bpostcond;
+ else tmpblock = bout;
+ if (!ir_block_create_jump(bin, tmpblock))
+ return false;
+
+ /* From precond */
+ if (bprecond)
+ {
+ ir_block *ontrue, *onfalse;
+ if (bbody) ontrue = bbody;
+ else if (bincrement) ontrue = bincrement;
+ else if (bpostcond) ontrue = bpostcond;
+ else ontrue = bprecond;
+ onfalse = bout;
+ if (!ir_block_create_if(end_bprecond, precond, ontrue, onfalse))
+ return false;
+ }
+
+ /* from body */
+ if (bbody)
+ {
+ if (bincrement) tmpblock = bincrement;
+ else if (bpostcond) tmpblock = bpostcond;
+ else if (bprecond) tmpblock = bprecond;
+ else tmpblock = bout;
+ if (!ir_block_create_jump(end_bbody, tmpblock))
+ return false;
+ }
+
+ /* from increment */
+ if (bincrement)
+ {
+ if (bpostcond) tmpblock = bpostcond;
+ else if (bprecond) tmpblock = bprecond;
+ else if (bbody) tmpblock = bbody;
+ else tmpblock = bout;
+ if (!ir_block_create_jump(end_bincrement, tmpblock))
+ return false;
+ }
+
+ /* from postcond */
+ if (bpostcond)
+ {
+ ir_block *ontrue, *onfalse;
+ if (bprecond) ontrue = bprecond;
+ else if (bbody) ontrue = bbody;
+ else if (bincrement) ontrue = bincrement;
+ else ontrue = bpostcond;
+ onfalse = bout;
+ if (!ir_block_create_if(end_bpostcond, postcond, ontrue, onfalse))
+ return false;
+ }
+
+ /* 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);
+ return false;
+ }
+
+ return true;
+}
+
+bool ast_call_codegen(ast_call *self, ast_function *func, bool lvalue, ir_value **out)
+{
+ /* TODO: call ir codegen */
+ ast_expression_codegen *cgen;
+ ir_value_vector params;
+ ir_instr *callinstr;
+ size_t i;
+
+ ir_value *funval = NULL;
+
+ /* return values are never rvalues */
+ (void)lvalue;
+
+ cgen = self->func->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->func), func, false, &funval))
+ return false;
+ if (!funval)
+ return false;
+
+ MEM_VECTOR_INIT(¶ms, v);
+
+ /* parameters */
+ for (i = 0; i < self->params_count; ++i)
+ {
+ ir_value *param;
+ ast_expression *expr = self->params[i];
+
+ cgen = expr->expression.codegen;
+ if (!(*cgen)(expr, func, false, ¶m))
+ goto error;
+ if (!param)
+ goto error;
+ if (!ir_value_vector_v_add(¶ms, param))
+ goto error;
+ }
+
+ 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;
+ }
+
+ *out = ir_call_value(callinstr);
+
+ return true;
+error:
+ MEM_VECTOR_CLEAR(¶ms, v);
return false;
}