diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/shader/slang/slang_codegen.c | 741 |
1 files changed, 405 insertions, 336 deletions
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c index 46ae15e21e5..51bf26ada86 100644 --- a/src/mesa/shader/slang/slang_codegen.c +++ b/src/mesa/shader/slang/slang_codegen.c @@ -54,7 +54,7 @@ static slang_atom CurLoopCont = 0; static slang_ir_node * -slang_assemble_operation(slang_assemble_ctx * A, slang_operation *oper); +_slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper); /** @@ -172,21 +172,6 @@ new_jump(slang_atom target) /** - * New IR_VAR_DECL node - allocate storage for a new variable. - */ -static slang_ir_node * -new_var_decl(slang_assemble_ctx *A, slang_variable *v) -{ - slang_ir_node *n = new_node(IR_VAR_DECL, NULL, NULL); - if (n) { - n->Var = v; - v->declared = GL_TRUE; - } - return n; -} - - -/** * New IR_VAR node - a reference to a previously declared variable. */ static slang_ir_node * @@ -249,95 +234,6 @@ slang_is_writemask(const char *field, GLuint *mask) /** - * Assemble a "return" statement. - */ -static slang_ir_node * -slang_assemble_return(slang_assemble_ctx * A, slang_operation *oper) -{ - if (oper->num_children == 0 || - (oper->num_children == 1 && - oper->children[0].type == slang_oper_void)) { - /* Convert from: - * return; - * To: - * goto __endOfFunction; - */ - slang_ir_node *n; - slang_operation gotoOp; - slang_operation_construct(&gotoOp); - gotoOp.type = slang_oper_goto; - gotoOp.a_id = slang_atom_pool_atom(A->atoms, CurFunction->end_label); - /* assemble the new code */ - n = slang_assemble_operation(A, &gotoOp); - /* destroy temp code */ - slang_operation_destruct(&gotoOp); - return n; - } - else { - /* - * Convert from: - * return expr; - * To: - * __retVal = expr; - * goto __endOfFunction; - */ - slang_operation *block, *assign, *jump; - slang_atom a_retVal; - slang_ir_node *n; - - a_retVal = slang_atom_pool_atom(A->atoms, "__retVal"); - assert(a_retVal); - -#if 1 /* DEBUG */ - { - slang_variable *v - = _slang_locate_variable(oper->locals, a_retVal, GL_TRUE); - assert(v); - } -#endif - - block = slang_operation_new(1); - block->type = slang_oper_block_no_new_scope; - block->num_children = 2; - block->children = slang_operation_new(2); - assert(block->locals); - block->locals->outer_scope = oper->locals->outer_scope; - - /* child[0]: __retVal = expr; */ - assign = &block->children[0]; - assign->type = slang_oper_assign; - assign->locals->outer_scope = block->locals; - assign->num_children = 2; - assign->children = slang_operation_new(2); - /* lhs (__retVal) */ - assign->children[0].type = slang_oper_identifier; - assign->children[0].a_id = a_retVal; - assign->children[0].locals->outer_scope = assign->locals; - /* rhs (expr) */ - /* XXX we might be able to avoid this copy someday */ - slang_operation_copy(&assign->children[1], &oper->children[0]); - - /* child[1]: goto __endOfFunction */ - jump = &block->children[1]; - jump->type = slang_oper_goto; - assert(CurFunction->end_label); - jump->a_id = slang_atom_pool_atom(A->atoms, CurFunction->end_label); - -#if 0 /* debug */ - printf("NEW RETURN:\n"); - slang_print_tree(block, 0); -#endif - - /* assemble the new code */ - n = slang_assemble_operation(A, block); - slang_operation_delete(block); - return n; - } -} - - - -/** * Check if the given function is really just a wrapper for an * basic assembly instruction. */ @@ -745,7 +641,7 @@ slang_inline_function_call(slang_assemble_ctx * A, slang_function *fun, static slang_ir_node * -slang_assemble_function_call(slang_assemble_ctx *A, slang_function *fun, +_slang_gen_function_call(slang_assemble_ctx *A, slang_function *fun, slang_operation *oper, slang_operation *dest) { slang_ir_node *n; @@ -789,7 +685,7 @@ slang_assemble_function_call(slang_assemble_ctx *A, slang_function *fun, #endif /* assemble what we just made XXX here??? */ - n = slang_assemble_operation(A, oper); + n = _slang_gen_operation(A, oper); CurFunction = prevFunc; @@ -841,11 +737,11 @@ make_writemask(char *field) /** - * Generate IR code for an instruction/operation such as: + * Generate IR tree for an asm instruction/operation such as: * __asm vec4_dot __retVal.x, v1, v2; */ static slang_ir_node * -slang_assemble_asm(slang_assemble_ctx *A, slang_operation *oper, +_slang_gen_asm(slang_assemble_ctx *A, slang_operation *oper, slang_operation *dest) { const slang_asm_info *info; @@ -870,7 +766,7 @@ slang_assemble_asm(slang_assemble_ctx *A, slang_operation *oper, /* assemble child(ren) */ kids[0] = kids[1] = NULL; for (j = 0; j < info->NumParams; j++) { - kids[j] = slang_assemble_operation(A, &oper->children[firstOperand + j]); + kids[j] = _slang_gen_operation(A, &oper->children[firstOperand + j]); } n = new_node(info->Opcode, kids[0], kids[1]); @@ -891,7 +787,7 @@ slang_assemble_asm(slang_assemble_ctx *A, slang_operation *oper, } assert(dest_oper->type == slang_oper_identifier); - n0 = slang_assemble_operation(A, dest_oper); + n0 = _slang_gen_operation(A, dest_oper); assert(n0->Var); assert(n0->Store); free(n0); @@ -922,8 +818,8 @@ _slang_is_noop(const slang_operation *oper) * \param name the function's name (operators like '*' are possible). */ static slang_ir_node * -slang_assemble_function_call_name(slang_assemble_ctx *A, const char *name, - slang_operation *oper, slang_operation *dest) +_slang_gen_function_call_name(slang_assemble_ctx *A, const char *name, + slang_operation *oper, slang_operation *dest) { slang_operation *params = oper->children; const GLuint param_count = oper->num_children; @@ -940,7 +836,7 @@ slang_assemble_function_call_name(slang_assemble_ctx *A, const char *name, RETURN_ERROR2("Undefined function", name, 0); } - return slang_assemble_function_call(A, fun, oper, dest); + return _slang_gen_function_call(A, fun, oper, dest); } @@ -969,13 +865,13 @@ _slang_gen_while(slang_assemble_ctx * A, const slang_operation *oper) CurLoopCont = startAtom; startLab = new_label(startAtom); - cond = slang_assemble_operation(A, &oper->children[0]); + cond = _slang_gen_operation(A, &oper->children[0]); tree = new_seq(startLab, cond); bra = new_cjump(endAtom); tree = new_seq(tree, bra); - body = slang_assemble_operation(A, &oper->children[1]); + body = _slang_gen_operation(A, &oper->children[1]); tree = new_seq(tree, body); jump = new_jump(startAtom); @@ -1021,23 +917,23 @@ _slang_gen_for(slang_assemble_ctx * A, const slang_operation *oper) CurLoopBreak = endAtom; CurLoopCont = contAtom; - init = slang_assemble_operation(A, &oper->children[0]); + init = _slang_gen_operation(A, &oper->children[0]); startLab = new_label(startAtom); tree = new_seq(init, startLab); - cond = slang_assemble_operation(A, &oper->children[1]); + cond = _slang_gen_operation(A, &oper->children[1]); tree = new_seq(tree, cond); bra = new_cjump(endAtom); tree = new_seq(tree, bra); - body = slang_assemble_operation(A, &oper->children[3]); + body = _slang_gen_operation(A, &oper->children[3]); tree = new_seq(tree, body); contLab = new_label(contAtom); tree = new_seq(tree, contLab); - incr = slang_assemble_operation(A, &oper->children[2]); + incr = _slang_gen_operation(A, &oper->children[2]); tree = new_seq(tree, incr); jump = new_jump(startAtom); @@ -1075,12 +971,12 @@ _slang_gen_if(slang_assemble_ctx * A, const slang_operation *oper) slang_atom elseAtom = slang_atom_pool_gen(A->atoms, "__else"); slang_atom endifAtom = slang_atom_pool_gen(A->atoms, "__endif"); - cond = slang_assemble_operation(A, &oper->children[0]); + cond = _slang_gen_operation(A, &oper->children[0]); /*assert(cond->Store);*/ bra = new_cjump(haveElseClause ? elseAtom : endifAtom); tree = new_seq(cond, bra); - trueBody = slang_assemble_operation(A, &oper->children[1]); + trueBody = _slang_gen_operation(A, &oper->children[1]); tree = new_seq(tree, trueBody); if (haveElseClause) { @@ -1092,7 +988,7 @@ _slang_gen_if(slang_assemble_ctx * A, const slang_operation *oper) elseLab = new_label(elseAtom); tree = new_seq(tree, elseLab); - falseBody = slang_assemble_operation(A, &oper->children[2]); + falseBody = _slang_gen_operation(A, &oper->children[2]); tree = new_seq(tree, falseBody); } @@ -1103,9 +999,321 @@ _slang_gen_if(slang_assemble_ctx * A, const slang_operation *oper) } +/** + * Generate IR tree for a return statement. + */ +static slang_ir_node * +_slang_gen_return(slang_assemble_ctx * A, slang_operation *oper) +{ + if (oper->num_children == 0 || + (oper->num_children == 1 && + oper->children[0].type == slang_oper_void)) { + /* Convert from: + * return; + * To: + * goto __endOfFunction; + */ + slang_ir_node *n; + slang_operation gotoOp; + slang_operation_construct(&gotoOp); + gotoOp.type = slang_oper_goto; + gotoOp.a_id = slang_atom_pool_atom(A->atoms, CurFunction->end_label); + /* assemble the new code */ + n = _slang_gen_operation(A, &gotoOp); + /* destroy temp code */ + slang_operation_destruct(&gotoOp); + return n; + } + else { + /* + * Convert from: + * return expr; + * To: + * __retVal = expr; + * goto __endOfFunction; + */ + slang_operation *block, *assign, *jump; + slang_atom a_retVal; + slang_ir_node *n; + + a_retVal = slang_atom_pool_atom(A->atoms, "__retVal"); + assert(a_retVal); + +#if 1 /* DEBUG */ + { + slang_variable *v + = _slang_locate_variable(oper->locals, a_retVal, GL_TRUE); + assert(v); + } +#endif + block = slang_operation_new(1); + block->type = slang_oper_block_no_new_scope; + block->num_children = 2; + block->children = slang_operation_new(2); + assert(block->locals); + block->locals->outer_scope = oper->locals->outer_scope; + + /* child[0]: __retVal = expr; */ + assign = &block->children[0]; + assign->type = slang_oper_assign; + assign->locals->outer_scope = block->locals; + assign->num_children = 2; + assign->children = slang_operation_new(2); + /* lhs (__retVal) */ + assign->children[0].type = slang_oper_identifier; + assign->children[0].a_id = a_retVal; + assign->children[0].locals->outer_scope = assign->locals; + /* rhs (expr) */ + /* XXX we might be able to avoid this copy someday */ + slang_operation_copy(&assign->children[1], &oper->children[0]); + + /* child[1]: goto __endOfFunction */ + jump = &block->children[1]; + jump->type = slang_oper_goto; + assert(CurFunction->end_label); + jump->a_id = slang_atom_pool_atom(A->atoms, CurFunction->end_label); + +#if 0 /* debug */ + printf("NEW RETURN:\n"); + slang_print_tree(block, 0); +#endif + + /* assemble the new code */ + n = _slang_gen_operation(A, block); + slang_operation_delete(block); + return n; + } +} + + +/** + * Generate IR tree for a variable declaration. + */ +static slang_ir_node * +_slang_gen_declaration(slang_assemble_ctx *A, slang_operation *oper) +{ + slang_ir_node *n; + slang_ir_node *varDecl; + slang_variable *v; + + assert(oper->num_children == 0 || oper->num_children == 1); + + v = _slang_locate_variable(oper->locals, oper->a_id, GL_TRUE); + assert(v); + + varDecl = new_node(IR_VAR_DECL, NULL, NULL); + if (!varDecl) + return NULL; + + varDecl->Var = v; + v->declared = GL_TRUE; + + slang_resolve_storage(A->codegen, varDecl, A->program); + + if (oper->num_children > 0) { + /* child is initializer */ + slang_ir_node *var, *init, *rhs; + assert(oper->num_children == 1); + var = new_var(A, oper, oper->a_id, SWIZZLE_NOOP); + /* XXX make copy of this initializer? */ + /* + printf("\n*** ASSEMBLE INITIALIZER %p\n", (void*) v->initializer); + */ + rhs = _slang_gen_operation(A, &oper->children[0]); + init = new_node(IR_MOVE, var, rhs); + /*assert(rhs->Opcode != IR_SEQ);*/ + n = new_seq(varDecl, init); + } + else if (v->initializer) { + slang_ir_node *var, *init, *rhs; + var = new_var(A, oper, oper->a_id, SWIZZLE_NOOP); + /* XXX make copy of this initializer? */ + /* + printf("\n*** ASSEMBLE INITIALIZER %p\n", (void*) v->initializer); + */ + rhs = _slang_gen_operation(A, v->initializer); + init = new_node(IR_MOVE, var, rhs); + /* + assert(rhs->Opcode != IR_SEQ); + */ + n = new_seq(varDecl, init); + } + else { + n = varDecl; + } + return n; +} + + +/** + * Generate IR tree for a variable (such as in an expression). + */ static slang_ir_node * -slang_assemble_operation(slang_assemble_ctx * A, slang_operation *oper) +_slang_gen_variable(slang_assemble_ctx * A, slang_operation *oper) +{ + /* If there's a variable associated with this oper (from inlining) + * use it. Otherwise, use the oper's var id. + */ + slang_atom aVar = oper->var ? oper->var->a_name : oper->a_id; + slang_ir_node *n = new_var(A, oper, aVar, SWIZZLE_NOOP); + assert(oper->var); + return n; +} + + +/** + * Generate IR tree for an assignment (=). + */ +static slang_ir_node * +_slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper) +{ + if (oper->children[0].type == slang_oper_identifier && + oper->children[1].type == slang_oper_call) { + /* Sspecial case of: x = f(a, b) + * Replace with f(a, b, x) (where x == hidden __retVal out param) + */ + slang_ir_node *n; + n = _slang_gen_function_call_name(A, + (const char *) oper->children[1].a_id, + &oper->children[1], &oper->children[0]); + return n; + } + else { + slang_operation *lhs = &oper->children[0]; + slang_ir_node *n, *c0, *c1; + GLuint mask = WRITEMASK_XYZW; + if (lhs->type == slang_oper_field) { + /* XXXX this is a hack! */ + /* writemask */ + if (!slang_is_writemask((char *) lhs->a_id, &mask)) + mask = WRITEMASK_XYZW; + lhs = &lhs->children[0]; + } + c0 = _slang_gen_operation(A, lhs); + c1 = _slang_gen_operation(A, &oper->children[1]); + + n = new_node(IR_MOVE, c0, c1); + /* + assert(c1->Opcode != IR_SEQ); + */ + if (c0->Writemask != WRITEMASK_XYZW) + /* XXX this is a hack! */ + n->Writemask = c0->Writemask; + else + n->Writemask = mask; + return n; + } +} + + +/** + * Generate IR tree for referencing a field in a struct (or basic vector type) + */ +static slang_ir_node * +_slang_gen_field(slang_assemble_ctx * A, slang_operation *oper) +{ + slang_assembly_typeinfo ti; + + slang_assembly_typeinfo_construct(&ti); + _slang_typeof_operation(A, &oper->children[0], &ti); + + if (_slang_type_is_vector(ti.spec.type)) { + /* the field should be a swizzle */ + const GLuint rows = _slang_type_dim(ti.spec.type); + slang_swizzle swz; + slang_ir_node *n; + if (!_slang_is_swizzle((char *) oper->a_id, rows, &swz)) { + RETURN_ERROR("Bad swizzle", 0); + } + n = _slang_gen_operation(A, &oper->children[0]); + n->Swizzle = MAKE_SWIZZLE4(swz.swizzle[0], + swz.swizzle[1], + swz.swizzle[2], + swz.swizzle[3]); + return n; + } + else if (ti.spec.type == slang_spec_float) { + const GLuint rows = 1; + slang_swizzle swz; + slang_ir_node *n; + if (!_slang_is_swizzle((char *) oper->a_id, rows, &swz)) { + RETURN_ERROR("Bad swizzle", 0); + } + n = _slang_gen_operation(A, &oper->children[0]); + n->Swizzle = MAKE_SWIZZLE4(swz.swizzle[0], + swz.swizzle[1], + swz.swizzle[2], + swz.swizzle[3]); + return n; + } + else { + /* the field is a structure member */ + abort(); + } +} + + +/** + * Generate IR tree for an array element reference. + */ +static slang_ir_node * +_slang_gen_subscript(slang_assemble_ctx * A, slang_operation *oper) +{ + if (oper->children[1].type == slang_oper_literal_int) { + /* compile-time constant index - OK */ + slang_assembly_typeinfo array_ti, elem_ti; + slang_ir_node *base; + GLint index; + + /* get type of array element */ + slang_assembly_typeinfo_construct(&elem_ti); + _slang_typeof_operation(A, oper, &elem_ti); + + /* get type of array */ + slang_assembly_typeinfo_construct(&array_ti); + _slang_typeof_operation(A, &oper->children[0], &array_ti); + + + base = _slang_gen_operation(A, &oper->children[0]); + assert(base->Opcode == IR_VAR); + assert(base->Store); + + index = (GLint) oper->children[1].literal[0]; + /*printf("element[%d]\n", index);*/ + /* new storage info since we don't want to change the original */ + base->Store = _slang_clone_ir_storage(base->Store); + if (_slang_type_is_vector(array_ti.spec.type)) { + /* scalar element (float) of a basic vector (vec3) */ + const GLuint max = _slang_type_dim(array_ti.spec.type); + if (index >= max) { + RETURN_ERROR("array index out of bounds", 0); + } + assert(index < 4); + /* use swizzle to access the element */ + base->Swizzle = SWIZZLE_X + index; + base->Writemask = WRITEMASK_X << index; + } + else { + /* bias Index by array subscript, update storage size */ + base->Store->Index += index; + base->Store->Size = _slang_sizeof_type_specifier(&elem_ti.spec); + } + return base; + } + else { + /* run-time index - not supported yet - TBD */ + abort(); + return NULL; + } +} + + +/** + * Generate IR tree for a slang_operation (AST node) + */ +static slang_ir_node * +_slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper) { switch (oper->type) { case slang_oper_block_no_new_scope: @@ -1116,38 +1324,43 @@ slang_assemble_operation(slang_assemble_ctx * A, slang_operation *oper) slang_ir_node *n, *tree = NULL; GLuint i; for (i = 0; i < oper->num_children; i++) { - n = slang_assemble_operation(A, &oper->children[i]); + n = _slang_gen_operation(A, &oper->children[i]); + if (!n) + return NULL; /* error must have occured */ tree = tree ? new_seq(tree, n) : n; } return tree; } break; case slang_oper_expression: - return slang_assemble_operation(A, &oper->children[0]); + return _slang_gen_operation(A, &oper->children[0]); break; case slang_oper_while: return _slang_gen_while(A, oper); case slang_oper_for: return _slang_gen_for(A, oper); case slang_oper_break: - ASSERT(CurLoopBreak); + if (!CurLoopBreak) { + RETURN_ERROR("'break' not in loop", 0); + } return new_jump(CurLoopBreak); case slang_oper_continue: - ASSERT(CurLoopCont); + if (!CurLoopCont) { + RETURN_ERROR("'continue' not in loop", 0); + } return new_jump(CurLoopCont); - break; case slang_oper_equal: return new_node(IR_SEQUAL, - slang_assemble_operation(A, &oper->children[0]), - slang_assemble_operation(A, &oper->children[1])); + _slang_gen_operation(A, &oper->children[0]), + _slang_gen_operation(A, &oper->children[1])); case slang_oper_notequal: return new_node(IR_SNEQUAL, - slang_assemble_operation(A, &oper->children[0]), - slang_assemble_operation(A, &oper->children[1])); + _slang_gen_operation(A, &oper->children[0]), + _slang_gen_operation(A, &oper->children[1])); case slang_oper_greater: return new_node(IR_SGT, - slang_assemble_operation(A, &oper->children[0]), - slang_assemble_operation(A, &oper->children[1])); + _slang_gen_operation(A, &oper->children[0]), + _slang_gen_operation(A, &oper->children[1])); case slang_oper_less: /* child[0] < child[1] ----> child[1] > child[0] */ #if 0 @@ -1155,138 +1368,75 @@ slang_assemble_operation(slang_assemble_ctx * A, slang_operation *oper) slang_ir_node *n; assert(oper->num_children == 2); /* XXX tranpose children */ - n = slang_assemble_function_call_name(A, "<", oper, NULL); + n = _slang_gen_function_call_name(A, "<", oper, NULL); return n; } #else /** the operands must be ints or floats, not vectors */ return new_node(IR_SGT, - slang_assemble_operation(A, &oper->children[1]), - slang_assemble_operation(A, &oper->children[0])); + _slang_gen_operation(A, &oper->children[1]), + _slang_gen_operation(A, &oper->children[0])); #endif case slang_oper_greaterequal: return new_node(IR_SGE, - slang_assemble_operation(A, &oper->children[0]), - slang_assemble_operation(A, &oper->children[1])); + _slang_gen_operation(A, &oper->children[0]), + _slang_gen_operation(A, &oper->children[1])); case slang_oper_lessequal: /* child[0] <= child[1] ----> child[1] >= child[0] */ return new_node(IR_SGE, - slang_assemble_operation(A, &oper->children[1]), - slang_assemble_operation(A, &oper->children[0])); + _slang_gen_operation(A, &oper->children[1]), + _slang_gen_operation(A, &oper->children[0])); case slang_oper_add: { slang_ir_node *n; assert(oper->num_children == 2); - n = slang_assemble_function_call_name(A, "+", oper, NULL); + n = _slang_gen_function_call_name(A, "+", oper, NULL); return n; } case slang_oper_subtract: { slang_ir_node *n; assert(oper->num_children == 2); - n = slang_assemble_function_call_name(A, "-", oper, NULL); + n = _slang_gen_function_call_name(A, "-", oper, NULL); return n; } case slang_oper_multiply: { slang_ir_node *n; assert(oper->num_children == 2); - n = slang_assemble_function_call_name(A, "*", oper, NULL); + n = _slang_gen_function_call_name(A, "*", oper, NULL); return n; } case slang_oper_divide: { slang_ir_node *n; assert(oper->num_children == 2); - n = slang_assemble_function_call_name(A, "/", oper, NULL); + n = _slang_gen_function_call_name(A, "/", oper, NULL); return n; } case slang_oper_variable_decl: - { - slang_ir_node *n; - slang_ir_node *varDecl; - slang_variable *v; - - assert(oper->num_children == 0 || oper->num_children == 1); - - v = _slang_locate_variable(oper->locals, oper->a_id, GL_TRUE); - assert(v); - varDecl = new_var_decl(A, v); - slang_resolve_storage(A->codegen, varDecl, A->program); - - if (oper->num_children > 0) { - /* child is initializer */ - slang_ir_node *var, *init, *rhs; - assert(oper->num_children == 1); - var = new_var(A, oper, oper->a_id, SWIZZLE_NOOP); - /* XXX make copy of this initializer? */ - /* - printf("\n*** ASSEMBLE INITIALIZER %p\n", (void*) v->initializer); - */ - rhs = slang_assemble_operation(A, &oper->children[0]); - init = new_node(IR_MOVE, var, rhs); - /*assert(rhs->Opcode != IR_SEQ);*/ - n = new_seq(varDecl, init); - } - else if (v->initializer) { - slang_ir_node *var, *init, *rhs; - var = new_var(A, oper, oper->a_id, SWIZZLE_NOOP); - /* XXX make copy of this initializer? */ - /* - printf("\n*** ASSEMBLE INITIALIZER %p\n", (void*) v->initializer); - */ - rhs = slang_assemble_operation(A, v->initializer); - init = new_node(IR_MOVE, var, rhs); - /* - assert(rhs->Opcode != IR_SEQ); - */ - n = new_seq(varDecl, init); - } - else { - n = varDecl; - } - return n; - } - break; + return _slang_gen_declaration(A, oper); case slang_oper_assign: - /* assignment */ - /* XXX look for special case of: x = f(a, b) - * and replace with f(a, b, x) (where x == hidden __retVal out param) - */ - if (oper->children[0].type == slang_oper_identifier && - oper->children[1].type == slang_oper_call) { - /* special case */ - slang_ir_node *n; - n = slang_assemble_function_call_name(A, - (const char *) oper->children[1].a_id, - &oper->children[1], &oper->children[0]); - return n; + return _slang_gen_assignment(A, oper); + case slang_oper_addassign: + { + slang_ir_node *n; + assert(oper->num_children == 2); + n = _slang_gen_function_call_name(A, "+=", oper, NULL); + /* The result of this operation should be stored back into child[0] */ + assert(n->Children[0]->Store); + n->Store = n->Children[0]->Store; + return n; } - else + case slang_oper_subassign: { - slang_operation *lhs = &oper->children[0]; - slang_ir_node *n, *c0, *c1; - GLuint mask = WRITEMASK_XYZW; - if (lhs->type == slang_oper_field) { - /* XXXX this is a hack! */ - /* writemask */ - if (!slang_is_writemask((char *) lhs->a_id, &mask)) - mask = WRITEMASK_XYZW; - lhs = &lhs->children[0]; - } - c0 = slang_assemble_operation(A, lhs); - c1 = slang_assemble_operation(A, &oper->children[1]); - - n = new_node(IR_MOVE, c0, c1); - /* - assert(c1->Opcode != IR_SEQ); - */ - if (c0->Writemask != WRITEMASK_XYZW) - /* XXX this is a hack! */ - n->Writemask = c0->Writemask; - else - n->Writemask = mask; + slang_ir_node *n; + assert(oper->num_children == 2); + n = _slang_gen_function_call_name(A, "-=", oper, NULL); + /* The result of this operation should be stored back into child[0] */ + assert(n->Children[0]->Store); + n->Store = n->Children[0]->Store; return n; } break; @@ -1294,124 +1444,41 @@ slang_assemble_operation(slang_assemble_ctx * A, slang_operation *oper) { slang_ir_node *n; assert(oper->num_children == 2); - /* XXX tranpose children */ - n = slang_assemble_function_call_name(A, "*=", oper, NULL); + n = _slang_gen_function_call_name(A, "*=", oper, NULL); + /* The result of this operation should be stored back into child[0] */ + assert(n->Children[0]->Store); + n->Store = n->Children[0]->Store; + return n; + } + case slang_oper_divassign: + { + slang_ir_node *n; + assert(oper->num_children == 2); + n = _slang_gen_function_call_name(A, "/=", oper, NULL); + /* The result of this operation should be stored back into child[0] */ + assert(n->Children[0]->Store); + n->Store = n->Children[0]->Store; return n; } - break; case slang_oper_asm: - return slang_assemble_asm(A, oper, NULL); + return _slang_gen_asm(A, oper, NULL); case slang_oper_call: - return slang_assemble_function_call_name(A, (const char *) oper->a_id, - oper, NULL); - break; + return _slang_gen_function_call_name(A, (const char *) oper->a_id, + oper, NULL); case slang_oper_return: - return slang_assemble_return(A, oper); + return _slang_gen_return(A, oper); case slang_oper_goto: return new_jump((char*) oper->a_id); case slang_oper_label: return new_label((char*) oper->a_id); case slang_oper_identifier: - { - /* If there's a variable associated with this oper (from inlining) - * use it. Otherwise, use the oper's var id. - */ - slang_atom aVar = oper->var ? oper->var->a_name : oper->a_id; - slang_ir_node *n = new_var(A, oper, aVar, SWIZZLE_NOOP); - assert(oper->var); - return n; - } - break; + return _slang_gen_variable(A, oper); case slang_oper_if: return _slang_gen_if(A, oper); case slang_oper_field: - { - slang_assembly_typeinfo ti; - slang_assembly_typeinfo_construct(&ti); - _slang_typeof_operation(A, &oper->children[0], &ti); - if (_slang_type_is_vector(ti.spec.type)) { - /* the field should be a swizzle */ - const GLuint rows = _slang_type_dim(ti.spec.type); - slang_swizzle swz; - slang_ir_node *n; - if (!_slang_is_swizzle((char *) oper->a_id, rows, &swz)) { - RETURN_ERROR("Bad swizzle", 0); - } - n = slang_assemble_operation(A, &oper->children[0]); - n->Swizzle = MAKE_SWIZZLE4(swz.swizzle[0], - swz.swizzle[1], - swz.swizzle[2], - swz.swizzle[3]); - return n; - } - else if (ti.spec.type == slang_spec_float) { - const GLuint rows = 1; - slang_swizzle swz; - slang_ir_node *n; - if (!_slang_is_swizzle((char *) oper->a_id, rows, &swz)) { - RETURN_ERROR("Bad swizzle", 0); - } - n = slang_assemble_operation(A, &oper->children[0]); - n->Swizzle = MAKE_SWIZZLE4(swz.swizzle[0], - swz.swizzle[1], - swz.swizzle[2], - swz.swizzle[3]); - return n; - } - else { - /* the field is a structure member */ - abort(); - } - } - break; + return _slang_gen_field(A, oper); case slang_oper_subscript: - /* array dereference */ - if (oper->children[1].type == slang_oper_literal_int) { - /* compile-time constant index - OK */ - slang_assembly_typeinfo array_ti, elem_ti; - slang_ir_node *base; - GLint index; - - /* get type of array element */ - slang_assembly_typeinfo_construct(&elem_ti); - _slang_typeof_operation(A, oper, &elem_ti); - - /* get type of array */ - slang_assembly_typeinfo_construct(&array_ti); - _slang_typeof_operation(A, &oper->children[0], &array_ti); - - - base = slang_assemble_operation(A, &oper->children[0]); - assert(base->Opcode == IR_VAR); - assert(base->Store); - - index = (GLint) oper->children[1].literal[0]; - /*printf("element[%d]\n", index);*/ - /* new storage info since we don't want to change the original */ - base->Store = _slang_clone_ir_storage(base->Store); - if (_slang_type_is_vector(array_ti.spec.type)) { - /* scalar element (float) of a basic vector (vec3) */ - const GLuint max = _slang_type_dim(array_ti.spec.type); - if (index >= max) { - RETURN_ERROR("array index out of bounds", 0); - } - assert(index < 4); - /* use swizzle to access the element */ - base->Swizzle = SWIZZLE_X + index; - base->Writemask = WRITEMASK_X << index; - } - else { - /* bias Index by array subscript, update storage size */ - base->Store->Index += index; - base->Store->Size = _slang_sizeof_type_specifier(&elem_ti.spec); - } - return base; - } - else { - /* run-time index - not supported yet - TBD */ - abort(); - } - return NULL; + return _slang_gen_subscript(A, oper); case slang_oper_literal_float: return new_float_literal(oper->literal[0], oper->literal[1], oper->literal[2], oper->literal[3]); @@ -1422,7 +1489,7 @@ slang_assemble_operation(slang_assemble_ctx * A, slang_operation *oper) case slang_oper_postincrement: /* XXX not 100% about this */ { - slang_ir_node *var = slang_assemble_operation(A, &oper->children[0]); + slang_ir_node *var = _slang_gen_operation(A, &oper->children[0]); slang_ir_node *one = new_float_literal(1.0, 1.0, 1.0, 1.0); slang_ir_node *sum = new_node(IR_ADD, var, one); slang_ir_node *assign = new_node(IR_MOVE, var, sum); @@ -1435,7 +1502,7 @@ slang_assemble_operation(slang_assemble_ctx * A, slang_operation *oper) slang_ir_node *tree = NULL; GLuint i; for (i = 0; i < oper->num_children; i++) { - slang_ir_node *n = slang_assemble_operation(A, &oper->children[i]); + slang_ir_node *n = _slang_gen_operation(A, &oper->children[i]); tree = tree ? new_seq(tree, n) : n; } return tree; @@ -1485,10 +1552,12 @@ _slang_codegen_function(slang_assemble_ctx * A, slang_function * fun) if (!CurFunction->end_label) CurFunction->end_label = slang_atom_pool_gen(A->atoms, "__endOfFunction_Main"); - n = slang_assemble_operation(A, fun->body); + n = _slang_gen_operation(A, fun->body); - endLabel = new_label(fun->end_label); - n = new_seq(n, endLabel); + if (n) { + endLabel = new_label(fun->end_label); + n = new_seq(n, endLabel); + } CurFunction = NULL; |