* @brief code selection (transform FIRM into SPARC FIRM)
* @version $Id$
*/
-
#include "config.h"
#include "irnode_t.h"
#include "../beirg.h"
#include "../beutil.h"
#include "../betranshlp.h"
+#include "../beabihelper.h"
#include "bearch_sparc_t.h"
#include "sparc_nodes_attr.h"
#include "gen_sparc_new_nodes.h"
#include "gen_sparc_regalloc_if.h"
+#include "sparc_cconv.h"
#include <limits.h>
DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
-static sparc_code_gen_t *env_cg;
+static sparc_code_gen_t *env_cg;
+static beabi_helper_env_t *abihelper;
+static const arch_register_t *sp_reg = &sparc_gp_regs[REG_SP];
+static const arch_register_t *fp_reg = &sparc_gp_regs[REG_FRAME_POINTER];
+static calling_convention_t *cconv = NULL;
+static ir_mode *mode_gp;
+static ir_mode *mode_fp;
+static pmap *node_to_stack;
static ir_node *gen_SymConst(ir_node *node);
if (mode_is_reference(mode)) {
/* SPARC V8 is 32bit, so we can safely convert a reference tarval into Iu */
- assert(get_mode_size_bits(mode) == get_mode_size_bits(mode_Iu));
- tv = tarval_convert_to(tv, mode_Iu);
+ assert(get_mode_size_bits(mode) == get_mode_size_bits(mode_gp));
+ tv = tarval_convert_to(tv, mode_gp);
}
value = get_tarval_long(tv);
mul = gen_helper_binop(node, MATCH_COMMUTATIVE | MATCH_SIZE_NEUTRAL, new_bd_sparc_Mul_reg, new_bd_sparc_Mul_imm);
arch_irn_add_flags(mul, arch_irn_flags_modify_flags);
- proj_res_low = new_rd_Proj(dbgi, mul, mode_Iu, pn_sparc_Mul_low);
+ proj_res_low = new_rd_Proj(dbgi, mul, mode_gp, pn_sparc_Mul_low);
return proj_res_low;
}
assert(mode_is_data(mode));
mul = gen_helper_binop(node, MATCH_COMMUTATIVE | MATCH_SIZE_NEUTRAL, new_bd_sparc_Mulh_reg, new_bd_sparc_Mulh_imm);
//arch_irn_add_flags(mul, arch_irn_flags_modify_flags);
- proj_res_hi = new_rd_Proj(dbgi, mul, mode_Iu, pn_sparc_Mulh_low);
+ proj_res_hi = new_rd_Proj(dbgi, mul, mode_gp, pn_sparc_Mulh_low);
return proj_res_hi;
}
ir_mode *mode = get_irn_mode(result);
if (mode_needs_gp_reg(mode)) {
- set_irn_mode(node, mode_Iu);
+ set_irn_mode(node, mode_gp);
}
return result;
panic("Unexpected Unknown mode");
}
+/**
+ * Produces the type which sits between the stack args and the locals on the
+ * stack.
+ */
+static ir_type *sparc_get_between_type(void)
+{
+ static ir_type *between_type = NULL;
+
+ if (between_type == NULL) {
+ between_type = new_type_class(new_id_from_str("sparc_between_type"));
+ set_type_size_bytes(between_type, SPARC_MIN_STACKSIZE);
+ }
+
+ return between_type;
+}
+
+static void create_stacklayout(ir_graph *irg)
+{
+ ir_entity *entity = get_irg_entity(irg);
+ ir_type *function_type = get_entity_type(entity);
+ be_stack_layout_t *layout = be_get_irg_stack_layout(irg);
+ ir_type *arg_type;
+ int p;
+ int n_params;
+
+ /* calling conventions must be decided by now */
+ assert(cconv != NULL);
+
+ /* construct argument type */
+ arg_type = new_type_struct(id_mangle_u(get_entity_ident(entity), new_id_from_chars("arg_type", 8)));
+ n_params = get_method_n_params(function_type);
+ for (p = 0; p < n_params; ++p) {
+ reg_or_stackslot_t *param = &cconv->parameters[p];
+ char buf[128];
+ ident *id;
+
+ if (param->type == NULL)
+ continue;
+
+ snprintf(buf, sizeof(buf), "param_%d", p);
+ id = new_id_from_str(buf);
+ param->entity = new_entity(arg_type, id, param->type);
+ set_entity_offset(param->entity, param->offset);
+ }
+
+ memset(layout, 0, sizeof(*layout));
+
+ layout->frame_type = get_irg_frame_type(irg);
+ layout->between_type = sparc_get_between_type();
+ layout->arg_type = arg_type;
+ layout->initial_offset = 0;
+ layout->initial_bias = 0;
+ layout->stack_dir = -1;
+ layout->sp_relative = false;
+
+ assert(N_FRAME_TYPES == 3);
+ layout->order[0] = layout->frame_type;
+ layout->order[1] = layout->between_type;
+ layout->order[2] = layout->arg_type;
+}
+
+/**
+ * transform the start node to the prolog code + initial barrier
+ */
+static ir_node *gen_Start(ir_node *node)
+{
+ ir_graph *irg = get_irn_irg(node);
+ ir_entity *entity = get_irg_entity(irg);
+ ir_type *function_type = get_entity_type(entity);
+ ir_node *block = get_nodes_block(node);
+ ir_node *new_block = be_transform_node(block);
+ dbg_info *dbgi = get_irn_dbg_info(node);
+ ir_node *mem;
+ ir_node *start;
+ ir_node *sp;
+ ir_node *fp;
+ ir_node *barrier;
+ ir_node *save;
+ int i;
+
+ /* stackpointer is important at function prolog */
+ be_prolog_add_reg(abihelper, sp_reg,
+ arch_register_req_type_produces_sp | arch_register_req_type_ignore);
+ /* function parameters in registers */
+ for (i = 0; i < get_method_n_params(function_type); ++i) {
+ const reg_or_stackslot_t *param = &cconv->parameters[i];
+ if (param->reg0 != NULL)
+ be_prolog_add_reg(abihelper, param->reg0, 0);
+ if (param->reg1 != NULL)
+ be_prolog_add_reg(abihelper, param->reg1, 0);
+ }
+
+ start = be_prolog_create_start(abihelper, dbgi, new_block);
+
+ mem = be_prolog_get_memory(abihelper);
+ sp = be_prolog_get_reg_value(abihelper, sp_reg);
+ save = new_bd_sparc_Save(NULL, block, sp, mem, SPARC_MIN_STACKSIZE);
+ fp = new_r_Proj(save, mode_gp, pn_sparc_Save_frame);
+ sp = new_r_Proj(save, mode_gp, pn_sparc_Save_stack);
+ mem = new_r_Proj(save, mode_M, pn_sparc_Save_mem);
+ arch_set_irn_register(fp, fp_reg);
+ arch_set_irn_register(sp, sp_reg);
+
+ be_prolog_add_reg(abihelper, fp_reg, arch_register_req_type_ignore);
+ be_prolog_set_reg_value(abihelper, fp_reg, fp);
+
+ sp = be_new_IncSP(sp_reg, new_block, sp, BE_STACK_FRAME_SIZE_EXPAND, 0);
+ be_prolog_set_reg_value(abihelper, sp_reg, sp);
+ be_prolog_set_memory(abihelper, mem);
+
+ barrier = be_prolog_create_barrier(abihelper, new_block);
+
+ return barrier;
+}
+
+static ir_node *get_stack_pointer_for(ir_node *node)
+{
+ /* get predecessor in stack_order list */
+ ir_node *stack_pred = be_get_stack_pred(abihelper, node);
+ ir_node *stack_pred_transformed;
+ ir_node *stack;
+
+ if (stack_pred == NULL) {
+ /* first stack user in the current block. We can simply use the
+ * initial sp_proj for it */
+ ir_node *sp_proj = be_prolog_get_reg_value(abihelper, sp_reg);
+ return sp_proj;
+ }
+
+ stack_pred_transformed = be_transform_node(stack_pred);
+ stack = pmap_get(node_to_stack, stack_pred);
+ if (stack == NULL) {
+ return get_stack_pointer_for(stack_pred);
+ }
+
+ return stack;
+}
+
+/**
+ * transform a Return node into epilogue code + return statement
+ */
+static ir_node *gen_Return(ir_node *node)
+{
+ ir_node *block = get_nodes_block(node);
+ ir_node *new_block = be_transform_node(block);
+ dbg_info *dbgi = get_irn_dbg_info(node);
+ ir_node *mem = get_Return_mem(node);
+ ir_node *new_mem = be_transform_node(mem);
+ ir_node *sp_proj = get_stack_pointer_for(node);
+ int n_res = get_Return_n_ress(node);
+ ir_node *bereturn;
+ ir_node *incsp;
+ int i;
+
+ be_epilog_begin(abihelper);
+ be_epilog_set_memory(abihelper, new_mem);
+ /* connect stack pointer with initial stack pointer. fix_stack phase
+ will later serialize all stack pointer adjusting nodes */
+ be_epilog_add_reg(abihelper, sp_reg,
+ arch_register_req_type_produces_sp | arch_register_req_type_ignore,
+ sp_proj);
+
+ /* result values */
+ for (i = 0; i < n_res; ++i) {
+ ir_node *res_value = get_Return_res(node, i);
+ ir_node *new_res_value = be_transform_node(res_value);
+ const reg_or_stackslot_t *slot = &cconv->results[i];
+ const arch_register_t *reg = slot->reg0;
+ assert(slot->reg1 == NULL);
+ be_epilog_add_reg(abihelper, reg, 0, new_res_value);
+ }
+
+ /* create the barrier before the epilog code */
+ be_epilog_create_barrier(abihelper, new_block);
+
+ /* epilog code: an incsp */
+ sp_proj = be_epilog_get_reg_value(abihelper, sp_reg);
+ incsp = be_new_IncSP(sp_reg, new_block, sp_proj,
+ BE_STACK_FRAME_SIZE_SHRINK, 0);
+ be_epilog_set_reg_value(abihelper, sp_reg, incsp);
+
+ bereturn = be_epilog_create_return(abihelper, dbgi, new_block);
+
+ return bereturn;
+}
+
+static ir_node *bitcast_int_to_float(dbg_info *dbgi, ir_node *block,
+ ir_node *node)
+{
+ ir_graph *irg = current_ir_graph;
+ ir_node *stack = get_irg_frame(irg);
+ ir_node *nomem = new_NoMem();
+ ir_node *st = new_bd_sparc_St(dbgi, block, stack, node, nomem, mode_gp,
+ NULL, 0, 0, true);
+ ir_node *ldf;
+ set_irn_pinned(st, op_pin_state_floats);
+
+ ldf = new_bd_sparc_Ldf(dbgi, block, stack, st, mode_fp, NULL, 0, 0, true);
+ set_irn_pinned(ldf, op_pin_state_floats);
+
+ return new_Proj(ldf, mode_fp, pn_sparc_Ldf_res);
+}
+
+static ir_node *bitcast_float_to_int(dbg_info *dbgi, ir_node *block,
+ ir_node *node)
+{
+ ir_graph *irg = current_ir_graph;
+ ir_node *stack = get_irg_frame(irg);
+ ir_node *nomem = new_NoMem();
+ ir_node *stf = new_bd_sparc_Stf(dbgi, block, stack, node, nomem, mode_fp,
+ NULL, 0, 0, true);
+ ir_node *ld;
+ set_irn_pinned(stf, op_pin_state_floats);
+
+ ld = new_bd_sparc_Ld(dbgi, block, stack, stf, mode_gp, NULL, 0, 0, true);
+ set_irn_pinned(ld, op_pin_state_floats);
+
+ return new_Proj(ld, mode_fp, pn_sparc_Ld_res);
+}
+
+static ir_node *gen_Call(ir_node *node)
+{
+ ir_graph *irg = get_irn_irg(node);
+ ir_node *callee = get_Call_ptr(node);
+ ir_node *block = get_nodes_block(node);
+ ir_node *new_block = be_transform_node(block);
+ ir_node *mem = get_Call_mem(node);
+ ir_node *new_mem = be_transform_node(mem);
+ dbg_info *dbgi = get_irn_dbg_info(node);
+ ir_type *type = get_Call_type(node);
+ int n_params = get_Call_n_params(node);
+ int n_param_regs = sizeof(param_regs)/sizeof(param_regs[0]);
+ /* max inputs: memory, callee, register arguments */
+ int max_inputs = 2 + n_param_regs;
+ ir_node **in = ALLOCAN(ir_node*, max_inputs);
+ ir_node **sync_ins = ALLOCAN(ir_node*, max_inputs);
+ struct obstack *obst = be_get_be_obst(irg);
+ const arch_register_req_t **in_req
+ = OALLOCNZ(obst, const arch_register_req_t*, max_inputs);
+ calling_convention_t *cconv
+ = sparc_decide_calling_convention(type, true);
+ int in_arity = 0;
+ int sync_arity = 0;
+ int n_caller_saves
+ = sizeof(caller_saves)/sizeof(caller_saves[0]);
+ ir_entity *entity = NULL;
+ ir_node *new_frame = get_stack_pointer_for(node);
+ ir_node *incsp;
+ int mem_pos;
+ ir_node *res;
+ int p;
+ int i;
+ int o;
+ int out_arity;
+
+ assert(n_params == get_method_n_params(type));
+
+ /* construct arguments */
+
+ /* memory input */
+ in_req[in_arity] = arch_no_register_req;
+ mem_pos = in_arity;
+ ++in_arity;
+
+ /* stack pointer input */
+ /* construct an IncSP -> we have to always be sure that the stack is
+ * aligned even if we don't push arguments on it */
+ incsp = be_new_IncSP(sp_reg, new_block, new_frame,
+ cconv->param_stack_size, 1);
+ in_req[in_arity] = sp_reg->single_req;
+ in[in_arity] = incsp;
+ ++in_arity;
+
+ /* parameters */
+ for (p = 0; p < n_params; ++p) {
+ ir_node *value = get_Call_param(node, p);
+ ir_node *new_value = be_transform_node(value);
+ ir_node *new_value1 = NULL;
+ const reg_or_stackslot_t *param = &cconv->parameters[p];
+ ir_type *param_type = get_method_param_type(type, p);
+ ir_mode *mode = get_type_mode(param_type);
+ ir_node *str;
+
+ if (mode_is_float(mode) && param->reg0 != NULL) {
+ unsigned size_bits = get_mode_size_bits(mode);
+ assert(size_bits == 32);
+ new_value = bitcast_float_to_int(dbgi, new_block, new_value);
+ }
+
+ /* put value into registers */
+ if (param->reg0 != NULL) {
+ in[in_arity] = new_value;
+ in_req[in_arity] = param->reg0->single_req;
+ ++in_arity;
+ if (new_value1 == NULL)
+ continue;
+ }
+ if (param->reg1 != NULL) {
+ assert(new_value1 != NULL);
+ in[in_arity] = new_value1;
+ in_req[in_arity] = param->reg1->single_req;
+ ++in_arity;
+ continue;
+ }
+
+ /* we need a store if we're here */
+ if (new_value1 != NULL) {
+ new_value = new_value1;
+ mode = mode_gp;
+ }
+
+ /* create a parameter frame if necessary */
+ if (mode_is_float(mode)) {
+ str = new_bd_sparc_Stf(dbgi, new_block, incsp, new_value, new_mem,
+ mode, NULL, 0, param->offset, true);
+ } else {
+ str = new_bd_sparc_St(dbgi, new_block, incsp, new_value, new_mem,
+ mode, NULL, 0, param->offset, true);
+ }
+ sync_ins[sync_arity++] = str;
+ }
+ assert(in_arity <= max_inputs);
+
+ /* construct memory input */
+ if (sync_arity == 0) {
+ in[mem_pos] = new_mem;
+ } else if (sync_arity == 1) {
+ in[mem_pos] = sync_ins[0];
+ } else {
+ in[mem_pos] = new_rd_Sync(NULL, new_block, sync_arity, sync_ins);
+ }
+
+ if (is_SymConst(callee)) {
+ entity = get_SymConst_entity(callee);
+ } else {
+ in[in_arity] = be_transform_node(callee);
+ in_req[in_arity] = sparc_reg_classes[CLASS_sparc_gp].class_req;
+ ++in_arity;
+ }
+
+ /* outputs:
+ * - memory
+ * - caller saves
+ */
+ out_arity = 1 + n_caller_saves;
+
+ /* create call node */
+ if (entity != NULL) {
+ res = new_bd_sparc_Call_imm(dbgi, new_block, in_arity, in, out_arity,
+ entity, 0);
+ } else {
+ res = new_bd_sparc_Call_reg(dbgi, new_block, in_arity, in, out_arity);
+ }
+ set_sparc_in_req_all(res, in_req);
+
+ /* create output register reqs */
+ o = 0;
+ arch_set_out_register_req(res, o++, arch_no_register_req);
+ for (i = 0; i < n_caller_saves; ++i) {
+ const arch_register_t *reg = caller_saves[i];
+ arch_set_out_register_req(res, o++, reg->single_req);
+ }
+ assert(o == out_arity);
+
+ /* copy pinned attribute */
+ set_irn_pinned(res, get_irn_pinned(node));
+
+ /* IncSP to destroy the call stackframe */
+ incsp = be_new_IncSP(sp_reg, new_block, incsp, -cconv->param_stack_size, 0);
+ /* if we are the last IncSP producer in a block then we have to keep
+ * the stack value.
+ * Note: This here keeps all producers which is more than necessary */
+ add_irn_dep(incsp, res);
+ keep_alive(incsp);
+
+ pmap_insert(node_to_stack, node, incsp);
+
+ sparc_free_calling_convention(cconv);
+ return res;
+}
+
+static ir_node *gen_Sel(ir_node *node)
+{
+ dbg_info *dbgi = get_irn_dbg_info(node);
+ ir_node *block = get_nodes_block(node);
+ ir_node *new_block = be_transform_node(block);
+ ir_node *ptr = get_Sel_ptr(node);
+ ir_node *new_ptr = be_transform_node(ptr);
+ ir_entity *entity = get_Sel_entity(node);
+
+ /* must be the frame pointer all other sels must have been lowered
+ * already */
+ assert(is_Proj(ptr) && is_Start(get_Proj_pred(ptr)));
+ /* we should not have value types from parameters anymore - they should be
+ lowered */
+ assert(get_entity_owner(entity) !=
+ get_method_value_param_type(get_entity_type(get_irg_entity(get_irn_irg(node)))));
+
+ return new_bd_sparc_FrameAddr(dbgi, new_block, new_ptr, entity);
+}
+
/**
* Transform some Phi nodes
*/
/* we shouldn't have any 64bit stuff around anymore */
assert(get_mode_size_bits(mode) <= 32);
/* all integer operations are on 32bit registers now */
- mode = mode_Iu;
+ mode = mode_gp;
req = sparc_reg_classes[CLASS_sparc_gp].class_req;
} else {
req = arch_no_register_req;
case iro_sparc_Ld:
/* handle all gp loads equal: they have the same proj numbers. */
if (proj == pn_Load_res) {
- return new_rd_Proj(dbgi, new_load, mode_Iu, pn_sparc_Ld_res);
+ return new_rd_Proj(dbgi, new_load, mode_gp, pn_sparc_Ld_res);
} else if (proj == pn_Load_M) {
return new_rd_Proj(dbgi, new_load, mode_M, pn_sparc_Ld_M);
}
return be_duplicate_node(node);
}
-/**
- * Transform the Projs of a be_AddSP.
- */
-static ir_node *gen_Proj_be_AddSP(ir_node *node)
-{
- ir_node *pred = get_Proj_pred(node);
- ir_node *new_pred = be_transform_node(pred);
- dbg_info *dbgi = get_irn_dbg_info(node);
- long proj = get_Proj_proj(node);
-
- if (proj == pn_be_AddSP_sp) {
- ir_node *res = new_rd_Proj(dbgi, new_pred, mode_Iu,
- pn_sparc_SubSP_stack);
- arch_set_irn_register(res, &sparc_gp_regs[REG_SP]);
- return res;
- } else if (proj == pn_be_AddSP_res) {
- return new_rd_Proj(dbgi, new_pred, mode_Iu, pn_sparc_SubSP_stack);
- } else if (proj == pn_be_AddSP_M) {
- return new_rd_Proj(dbgi, new_pred, mode_M, pn_sparc_SubSP_M);
- }
-
- panic("Unsupported Proj from AddSP");
-}
-
-/**
- * Transform the Projs of a be_SubSP.
- */
-static ir_node *gen_Proj_be_SubSP(ir_node *node)
-{
- ir_node *pred = get_Proj_pred(node);
- ir_node *new_pred = be_transform_node(pred);
- dbg_info *dbgi = get_irn_dbg_info(node);
- long proj = get_Proj_proj(node);
-
- if (proj == pn_be_SubSP_sp) {
- ir_node *res = new_rd_Proj(dbgi, new_pred, mode_Iu,
- pn_sparc_AddSP_stack);
- arch_set_irn_register(res, &sparc_gp_regs[REG_SP]);
- return res;
- } else if (proj == pn_be_SubSP_M) {
- return new_rd_Proj(dbgi, new_pred, mode_M, pn_sparc_AddSP_M);
- }
-
- panic("Unsupported Proj from SubSP");
-}
-
/**
* Transform the Projs from a Cmp.
*/
switch (proj) {
case pn_Div_res:
if (is_sparc_Div(new_pred)) {
- return new_rd_Proj(dbgi, new_pred, mode_Iu, pn_sparc_Div_res);
+ return new_rd_Proj(dbgi, new_pred, mode_gp, pn_sparc_Div_res);
}
break;
default:
panic("Unsupported Proj from Div");
}
+static ir_node *gen_Proj_Start(ir_node *node)
+{
+ ir_node *block = get_nodes_block(node);
+ ir_node *new_block = be_transform_node(block);
+ ir_node *barrier = be_transform_node(get_Proj_pred(node));
+ long pn = get_Proj_proj(node);
+
+ switch ((pn_Start) pn) {
+ case pn_Start_X_initial_exec:
+ /* excahnge ProjX with a jump */
+ return new_bd_sparc_Ba(NULL, new_block);
+ case pn_Start_M:
+ return new_r_Proj(barrier, mode_M, 0);
+ case pn_Start_T_args:
+ return barrier;
+ case pn_Start_P_frame_base:
+ return be_prolog_get_reg_value(abihelper, fp_reg);
+ case pn_Start_P_tls:
+ return new_Bad();
+ case pn_Start_max:
+ break;
+ }
+ panic("Unexpected start proj: %ld\n", pn);
+}
+
+static ir_node *gen_Proj_Proj_Start(ir_node *node)
+{
+ long pn = get_Proj_proj(node);
+ ir_node *block = get_nodes_block(node);
+ ir_node *new_block = be_transform_node(block);
+ ir_entity *entity = get_irg_entity(current_ir_graph);
+ ir_type *method_type = get_entity_type(entity);
+ ir_type *param_type = get_method_param_type(method_type, pn);
+ const reg_or_stackslot_t *param;
+
+ /* Proj->Proj->Start must be a method argument */
+ assert(get_Proj_proj(get_Proj_pred(node)) == pn_Start_T_args);
+
+ param = &cconv->parameters[pn];
+
+ if (param->reg0 != NULL) {
+ /* argument transmitted in register */
+ ir_mode *mode = get_type_mode(param_type);
+ const arch_register_t *reg = param->reg0;
+ ir_node *value = be_prolog_get_reg_value(abihelper, reg);
+
+ if (mode_is_float(mode)) {
+ /* convert integer value to float */
+ value = bitcast_int_to_float(NULL, new_block, value);
+ }
+ return value;
+ } else {
+ /* argument transmitted on stack */
+ ir_node *fp = be_prolog_get_reg_value(abihelper, fp_reg);
+ ir_node *mem = be_prolog_get_memory(abihelper);
+ ir_mode *mode = get_type_mode(param->type);
+ ir_node *load;
+ ir_node *value;
+
+ if (mode_is_float(mode)) {
+ load = new_bd_sparc_Ldf(NULL, new_block, fp, mem, mode,
+ param->entity, 0, 0, true);
+ value = new_r_Proj(load, mode_fp, pn_sparc_Ldf_res);
+ } else {
+ load = new_bd_sparc_Ld(NULL, new_block, fp, mem, mode,
+ param->entity, 0, 0, true);
+ value = new_r_Proj(load, mode_gp, pn_sparc_Ld_res);
+ }
+ set_irn_pinned(load, op_pin_state_floats);
+
+ return value;
+ }
+}
+
+static ir_node *gen_Proj_Call(ir_node *node)
+{
+ long pn = get_Proj_proj(node);
+ ir_node *call = get_Proj_pred(node);
+ ir_node *new_call = be_transform_node(call);
+
+ switch ((pn_Call) pn) {
+ case pn_Call_M:
+ return new_r_Proj(new_call, mode_M, 0);
+ case pn_Call_X_regular:
+ case pn_Call_X_except:
+ case pn_Call_T_result:
+ case pn_Call_P_value_res_base:
+ case pn_Call_max:
+ break;
+ }
+ panic("Unexpected Call proj %ld\n", pn);
+}
+
+/**
+ * Finds number of output value of a mode_T node which is constrained to
+ * a single specific register.
+ */
+static int find_out_for_reg(ir_node *node, const arch_register_t *reg)
+{
+ int n_outs = arch_irn_get_n_outs(node);
+ int o;
+
+ for (o = 0; o < n_outs; ++o) {
+ const arch_register_req_t *req = arch_get_out_register_req(node, o);
+ if (req == reg->single_req)
+ return o;
+ }
+ return -1;
+}
+
+static ir_node *gen_Proj_Proj_Call(ir_node *node)
+{
+ long pn = get_Proj_proj(node);
+ ir_node *call = get_Proj_pred(get_Proj_pred(node));
+ ir_node *new_call = be_transform_node(call);
+ ir_type *function_type = get_Call_type(call);
+ calling_convention_t *cconv
+ = sparc_decide_calling_convention(function_type, true);
+ const reg_or_stackslot_t *res = &cconv->results[pn];
+ const arch_register_t *reg = res->reg0;
+ ir_mode *mode;
+ int regn;
+
+ assert(res->reg0 != NULL && res->reg1 == NULL);
+ regn = find_out_for_reg(new_call, reg);
+ if (regn < 0) {
+ panic("Internal error in calling convention for return %+F", node);
+ }
+ mode = res->reg0->reg_class->mode;
+
+ sparc_free_calling_convention(cconv);
+
+ return new_r_Proj(new_call, mode, regn);
+}
/**
* Transform a Proj node.
*/
static ir_node *gen_Proj(ir_node *node)
{
- ir_graph *irg = current_ir_graph;
- dbg_info *dbgi = get_irn_dbg_info(node);
- ir_node *pred = get_Proj_pred(node);
- long proj = get_Proj_proj(node);
-
- (void) irg;
- (void) dbgi;
+ ir_node *pred = get_Proj_pred(node);
+ long pn = get_Proj_proj(node);
- if (is_Store(pred)) {
- if (proj == pn_Store_M) {
+ switch (get_irn_opcode(pred)) {
+ case iro_Store:
+ if (pn == pn_Store_M) {
return be_transform_node(pred);
} else {
panic("Unsupported Proj from Store");
}
- } else if (is_Load(pred)) {
+ break;
+ case iro_Load:
return gen_Proj_Load(node);
- } else if (be_is_SubSP(pred)) {
- //panic("gen_Proj not implemented for SubSP");
- return gen_Proj_be_SubSP(node);
- } else if (be_is_AddSP(pred)) {
- //panic("gen_Proj not implemented for AddSP");
- return gen_Proj_be_AddSP(node);
- } else if (is_Cmp(pred)) {
- //panic("gen_Proj not implemented for Cmp");
+ case iro_Call:
+ return gen_Proj_Call(node);
+ case iro_Cmp:
return gen_Proj_Cmp(node);
- } else if (is_Div(pred)) {
+ case iro_Cond:
+ return be_duplicate_node(node);
+ case iro_Div:
return gen_Proj_Div(node);
- } else if (is_Start(pred)) {
- /*
- if (proj == pn_Start_X_initial_exec) {
- ir_node *block = get_nodes_block(pred);
- ir_node *jump;
-
- // we exchange the ProjX with a jump
- block = be_transform_node(block);
- jump = new_rd_Jmp(dbgi, block);
- return jump;
- }
-
- if (node == get_irg_anchor(irg, anchor_tls)) {
- return gen_Proj_tls(node);
- }
- */
- } else {
- ir_node *new_pred = be_transform_node(pred);
- ir_mode *mode = get_irn_mode(node);
- if (mode_needs_gp_reg(mode)) {
- ir_node *new_proj = new_r_Proj(new_pred, mode_Iu, get_Proj_proj(node));
- new_proj->node_nr = node->node_nr;
- return new_proj;
+ case iro_Start:
+ return gen_Proj_Start(node);
+ case iro_Proj: {
+ ir_node *pred_pred = get_Proj_pred(pred);
+ if (is_Call(pred_pred)) {
+ return gen_Proj_Proj_Call(node);
+ } else if (is_Start(pred_pred)) {
+ return gen_Proj_Proj_Start(node);
}
+ /* FALLTHROUGH */
+ }
+ default:
+ panic("code selection didn't expect Proj after %+F\n", pred);
}
-
- return be_duplicate_node(node);
}
be_set_transform_function(op_be_Copy, gen_be_Copy);
be_set_transform_function(op_be_FrameAddr, gen_be_FrameAddr);
be_set_transform_function(op_be_SubSP, gen_be_SubSP);
+ be_set_transform_function(op_Call, gen_Call);
be_set_transform_function(op_Cmp, gen_Cmp);
be_set_transform_function(op_Cond, gen_Cond);
be_set_transform_function(op_Const, gen_Const);
be_set_transform_function(op_Or, gen_Or);
be_set_transform_function(op_Phi, gen_Phi);
be_set_transform_function(op_Proj, gen_Proj);
+ be_set_transform_function(op_Return, gen_Return);
+ be_set_transform_function(op_Sel, gen_Sel);
be_set_transform_function(op_Shl, gen_Shl);
be_set_transform_function(op_Shr, gen_Shr);
be_set_transform_function(op_Shrs, gen_Shrs);
+ be_set_transform_function(op_Start, gen_Start);
be_set_transform_function(op_Store, gen_Store);
be_set_transform_function(op_Sub, gen_Sub);
be_set_transform_function(op_SymConst, gen_SymConst);
be_set_transform_function(op_sparc_Save, be_duplicate_node);
}
+/* hack to avoid unused fp proj at start barrier */
+static void assure_fp_keep(void)
+{
+ unsigned n_users = 0;
+ const ir_edge_t *edge;
+ ir_node *fp_proj = be_prolog_get_reg_value(abihelper, fp_reg);
+
+ foreach_out_edge(fp_proj, edge) {
+ ir_node *succ = get_edge_src_irn(edge);
+ if (is_End(succ) || is_Anchor(succ))
+ continue;
+ ++n_users;
+ }
+
+ if (n_users == 0) {
+ ir_node *block = get_nodes_block(fp_proj);
+ ir_node *in[1] = { fp_proj };
+ be_new_Keep(block, 1, in);
+ }
+}
+
/**
* Transform a Firm graph into a SPARC graph.
*/
void sparc_transform_graph(sparc_code_gen_t *cg)
{
+ ir_graph *irg = cg->irg;
+ ir_entity *entity = get_irg_entity(irg);
+ ir_type *frame_type;
+
sparc_register_transformers();
env_cg = cg;
+
+ node_to_stack = pmap_create();
+
+ mode_gp = mode_Iu;
+ mode_fp = mode_F;
+
+ abihelper = be_abihelper_prepare(irg);
+ be_collect_stacknodes(abihelper);
+ cconv = sparc_decide_calling_convention(get_entity_type(entity), false);
+ create_stacklayout(irg);
+
be_transform_graph(cg->irg, NULL);
+ assure_fp_keep();
+
+ be_abihelper_finish(abihelper);
+ sparc_free_calling_convention(cconv);
+
+ frame_type = get_irg_frame_type(irg);
+ if (get_type_state(frame_type) == layout_undefined)
+ default_layout_compound_type(frame_type);
+
+ pmap_destroy(node_to_stack);
+ node_to_stack = NULL;
+
+ be_add_missing_keeps(irg);
}
void sparc_init_transform(void)
projects / libfirm / blobdiff