X-Git-Url: https://git.xonotic.org/?a=blobdiff_plain;f=ast.c;h=d6f231c45d7d77935988da8b16dd337dc17171d5;hb=9c0231a58e19bffd5fc354049cc30e09619c14de;hp=e7d5f099a58592133b24044952e6f8a48011b029;hpb=5c52e817ea157341b5ed5d87609eec5acdfd7a3b;p=xonotic%2Fgmqcc.git

diff --git a/ast.c b/ast.c
index e7d5f09..d6f231c 100644
--- a/ast.c
+++ b/ast.c
@@ -47,6 +47,7 @@ static void asterror(lex_ctx ctx, const char *msg, ...)
 /* It must not be possible to get here. */
 static GMQCC_NORETURN void _ast_node_destroy(ast_node *self)
 {
+    (void)self;
     con_err("ast node missing destroy()\n");
     abort();
 }
@@ -651,7 +652,11 @@ ast_ternary* ast_ternary_new(lex_ctx ctx, ast_expression *cond, ast_expression *
     self->cond     = cond;
     self->on_true  = ontrue;
     self->on_false = onfalse;
-    self->phi_out  = NULL;
+
+    if (!ast_type_adopt(self, ontrue)) {
+        ast_ternary_delete(self);
+        return NULL;
+    }
 
     return self;
 }
@@ -784,8 +789,12 @@ bool ast_call_check_types(ast_call *self)
 
     for (i = 0; i < count; ++i) {
         if (!ast_compare_type(self->params[i], (ast_expression*)(func->expression.params[i]))) {
-            asterror(ast_ctx(self), "invalid type for parameter %u in function call",
-                     (unsigned int)(i+1));
+            char texp[1024];
+            char tgot[1024];
+            ast_type_to_string(self->params[i], tgot, sizeof(tgot));
+            ast_type_to_string((ast_expression*)func->expression.params[i], texp, sizeof(texp));
+            asterror(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;
         }
@@ -883,6 +892,10 @@ ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype)
         vtype->isconst ||
         vtype->expression.vtype != TYPE_FUNCTION)
     {
+        asterror(ast_ctx(self), "internal error: ast_function_new condition %i %i type=%i",
+                 (int)!vtype,
+                 (int)vtype->isconst,
+                 vtype->expression.vtype);
         mem_d(self);
         return NULL;
     }
@@ -932,7 +945,7 @@ const char* ast_function_label(ast_function *self, const char *prefix)
     size_t len;
     char  *from;
 
-    if (!opts_dump)
+    if (!opts_dump && !opts_dumpfin)
         return NULL;
 
     id  = (self->labelcount++);
@@ -958,6 +971,8 @@ const char* ast_function_label(ast_function *self, const char *prefix)
 
 bool ast_value_codegen(ast_value *self, ast_function *func, bool lvalue, ir_value **out)
 {
+    (void)func;
+    (void)lvalue;
     /* 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
@@ -1282,6 +1297,8 @@ bool ast_function_codegen(ast_function *self, ir_builder *ir)
     ast_expression_common *ec;
     size_t    i;
 
+    (void)ir;
+
     irf = self->ir_func;
     if (!irf) {
         asterror(ast_ctx(self), "ast_function's related ast_value was not generated yet");
@@ -1404,10 +1421,11 @@ bool ast_block_codegen(ast_block *self, ast_function *func, bool lvalue, ir_valu
 bool ast_store_codegen(ast_store *self, ast_function *func, bool lvalue, ir_value **out)
 {
     ast_expression_codegen *cgen;
-    ir_value *left, *right;
+    ir_value *left  = NULL;
+    ir_value *right = NULL;
 
     ast_value       *arr;
-    ast_value       *idx;
+    ast_value       *idx = 0;
     ast_array_index *ai = NULL;
 
     if (lvalue && self->expression.outl) {
@@ -1513,13 +1531,105 @@ 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;
+        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))
+         */
+
+        merge_id = vec_size(func->ir_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;
+        if (!OPTS_FLAG(PERL_LOGIC)) {
+            notop = type_not_instr[left->vtype];
+            if (notop == AINSTR_END) {
+                asterror(ast_ctx(self), "don't know how to cast to bool...");
+                return false;
+            }
+            left = ir_block_create_unary(func->curblock,
+                                         ast_function_label(func, "sce_not"),
+                                         notop,
+                                         left);
+        }
+        from_left = func->curblock;
+
+        other = ir_function_create_block(func->ir_func, ast_function_label(func, "sce_other"));
+        if ( !(self->op == INSTR_OR) != !OPTS_FLAG(PERL_LOGIC) ) {
+            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 likely flag */
+        vec_last(func->curblock->instr)->likely = true;
+
+        func->curblock = other;
+        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) {
+                asterror(ast_ctx(self), "don't know how to cast to bool...");
+                return false;
+            }
+            right = ir_block_create_unary(func->curblock,
+                                          ast_function_label(func, "sce_not"),
+                                          notop,
+                                          right);
+        }
+        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);
+        if (!OPTS_FLAG(PERL_LOGIC)) {
+            notop = type_not_instr[(*out)->vtype];
+            if (notop == AINSTR_END) {
+                asterror(ast_ctx(self), "don't know how to cast to bool...");
+                return false;
+            }
+            *out = ir_block_create_unary(func->curblock,
+                                         ast_function_label(func, "sce_final_not"),
+                                         notop,
+                                         *out);
+        }
+        if (!*out)
+            return false;
+        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;
 
@@ -1535,7 +1645,12 @@ bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_va
 bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, ir_value **out)
 {
     ast_expression_codegen *cgen;
-    ir_value *leftl, *leftr, *right, *bin;
+    ir_value *leftl = NULL, *leftr, *right, *bin;
+
+    ast_value       *arr;
+    ast_value       *idx = 0;
+    ast_array_index *ai = NULL;
+    ir_value        *iridx = NULL;
 
     if (lvalue && self->expression.outl) {
         *out = self->expression.outl;
@@ -1547,8 +1662,23 @@ bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, i
         return true;
     }
 
+    if (ast_istype(self->dest, ast_array_index))
+    {
+
+        ai = (ast_array_index*)self->dest;
+        idx = (ast_value*)ai->index;
+
+        if (ast_istype(ai->index, ast_value) && idx->isconst)
+            ai = NULL;
+    }
+
     /* for a binstore we need both an lvalue and an rvalue for the left side */
     /* rvalue of destination! */
+    if (ai) {
+        cgen = idx->expression.codegen;
+        if (!(*cgen)((ast_expression*)(idx), func, false, &iridx))
+            return false;
+    }
     cgen = self->dest->expression.codegen;
     if (!(*cgen)((ast_expression*)(self->dest), func, false, &leftr))
         return false;
@@ -1563,16 +1693,45 @@ bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, i
                                 self->opbin, leftr, right);
     self->expression.outr = bin;
 
-    /* now store them */
-    cgen = self->dest->expression.codegen;
-    /* lvalue of destination */
-    if (!(*cgen)((ast_expression*)(self->dest), func, true, &leftl))
-        return false;
-    self->expression.outl = leftl;
 
-    if (!ir_block_create_store_op(func->curblock, self->opstore, leftl, bin))
-        return false;
-    self->expression.outr = bin;
+    if (ai) {
+        /* we need to call the setter */
+        ir_value  *funval;
+        ir_instr  *call;
+
+        if (lvalue) {
+            asterror(ast_ctx(self), "array-subscript assignment cannot produce lvalues");
+            return false;
+        }
+
+        arr = (ast_value*)ai->array;
+        if (!ast_istype(ai->array, ast_value) || !arr->setter) {
+            asterror(ast_ctx(self), "value has no setter (%s)", arr->name);
+            return false;
+        }
+
+        cgen = arr->setter->expression.codegen;
+        if (!(*cgen)((ast_expression*)(arr->setter), func, true, &funval))
+            return false;
+
+        call = ir_block_create_call(func->curblock, ast_function_label(func, "store"), funval);
+        if (!call)
+            return false;
+        ir_call_param(call, iridx);
+        ir_call_param(call, bin);
+        self->expression.outr = bin;
+    } else {
+        /* now store them */
+        cgen = self->dest->expression.codegen;
+        /* lvalue of destination */
+        if (!(*cgen)((ast_expression*)(self->dest), func, true, &leftl))
+            return false;
+        self->expression.outl = leftl;
+
+        if (!ir_block_create_store_op(func->curblock, self->opstore, leftl, bin))
+            return false;
+        self->expression.outr = bin;
+    }
 
     /* Theoretically, an assinment returns its left side as an
      * lvalue, if we don't need an lvalue though, we return
@@ -1621,6 +1780,8 @@ bool ast_return_codegen(ast_return *self, ast_function *func, bool lvalue, ir_va
     ast_expression_codegen *cgen;
     ir_value *operand;
 
+    *out = NULL;
+
     /* In the context of a return operation, we don't actually return
      * anything...
      */
@@ -1826,10 +1987,11 @@ bool ast_ifthen_codegen(ast_ifthen *self, ast_function *func, bool lvalue, ir_va
     self->expression.outr = (ir_value*)1;
 
     /* generate the condition */
-    func->curblock = cond;
     cgen = self->cond->expression.codegen;
     if (!(*cgen)((ast_expression*)(self->cond), func, false, &condval))
         return false;
+    /* update the block which will get the jump - because short-logic or ternaries may have changed this */
+    cond = func->curblock;
 
     /* on-true path */
 
@@ -1876,7 +2038,6 @@ bool ast_ifthen_codegen(ast_ifthen *self, ast_function *func, bool lvalue, ir_va
     merge = ir_function_create_block(func->ir_func, ast_function_label(func, "endif"));
     if (!merge)
         return false;
-
     /* add jumps ot the merge block */
     if (ontrue && !ontrue_endblock->final && !ir_block_create_jump(ontrue_endblock, merge))
         return false;
@@ -1920,8 +2081,8 @@ bool ast_ternary_codegen(ast_ternary *self, ast_function *func, bool lvalue, ir_
      * may still happen, thus we remember a created ir_value and simply return one
      * if it already exists.
      */
-    if (self->phi_out) {
-        *out = self->phi_out;
+    if (self->expression.outr) {
+        *out = self->expression.outr;
         return true;
     }
 
@@ -1995,8 +2156,8 @@ bool ast_ternary_codegen(ast_ternary *self, ast_function *func, bool lvalue, ir_
     ir_phi_add(phi, ontrue,  trueval);
     ir_phi_add(phi, onfalse, falseval);
 
-    self->phi_out = ir_phi_value(phi);
-    *out = self->phi_out;
+    self->expression.outr = ir_phi_value(phi);
+    *out = self->expression.outr;
 
     return true;
 }
@@ -2235,6 +2396,8 @@ bool ast_breakcont_codegen(ast_breakcont *self, ast_function *func, bool lvalue,
 {
     ir_block *target;
 
+    *out = NULL;
+
     if (lvalue) {
         asterror(ast_ctx(self), "break/continue expression is not an l-value");
         return false;