-/**
- * Adds Projs to keep nodes for each register class, which eats the
- * caller saved registers.
- * Note: The caller has to make sure, that call is a Call
- *
- * @param call The Call node
- * @param walk_env The walker environment
- */
-static void lower_call_node(ir_node *call, const void *walk_env) {
- const arch_env_t *arch_env = walk_env;
- int bitset_idx = 0;
- int set_size = 0;
- arch_isa_t *isa = arch_env_get_isa(arch_env);
- const ir_node *proj_T = NULL;
- ir_node *block = get_nodes_block(call);
- const arch_register_class_t *reg_class;
- int i, j, pn, keep_arity;
- ir_node **in_keep;
- bitset_t *proj_set;
- const ir_edge_t *edge;
- const arch_register_t *reg;
-
- /* Prepare the bitset where we store the projnums which are already in use*/
- for (i = 0; i < arch_isa_get_n_reg_class(isa); i++) {
- reg_class = arch_isa_get_reg_class(isa, i);
- set_size += arch_register_class_n_regs(reg_class);
- }
-
- in_keep = xmalloc(set_size * sizeof(ir_node *));
-
- proj_set = bitset_malloc(set_size);
- bitset_clear_all(proj_set);
-
- /* check if there is a ProjT node and which arguments are used */
- foreach_out_edge(call, edge) {
- if (get_irn_mode(get_edge_src_irn(edge)) == mode_T)
- proj_T = get_edge_src_irn(edge);
- }
-
- /* set all used arguments */
- if (proj_T) {
- foreach_out_edge(proj_T, edge) {
- ir_node *proj = get_edge_src_irn(edge);
-
- assert(is_Proj(proj));
- pn = isa->impl->handle_call_proj(isa, proj, 0);
- bitset_set(proj_set, pn);
- }
- }
- else {
- proj_T = new_r_Proj(current_ir_graph, block, call, mode_T, pn_Call_T_result);
- }
-
- /* Create for each caller save register a proj (keep node argument) */
- /* if this proj is not already present */
- for (i = 0; i < arch_isa_get_n_reg_class(isa); i++) {
-
- /* reset the keep input, as we need one keep for each register class */
- memset(in_keep, 0, set_size * sizeof(ir_node *));
- keep_arity = 0;
- reg_class = arch_isa_get_reg_class(isa, i);
-
- for (j = 0; j < arch_register_class_n_regs(reg_class); j++) {
- reg = arch_register_for_index(reg_class, j);
-
- /* only check caller save registers */
- if (arch_register_type_is(reg, caller_save)) {
-
- /* Only create new proj, iff not already present */
- if (!bitset_is_set(proj_set, bitset_idx)) {
- ir_node *proj = new_r_Proj(current_ir_graph, block, (ir_node *)proj_T, mode_Is, bitset_idx);
-
- pn = isa->impl->handle_call_proj(isa, proj, 1);
- in_keep[keep_arity++] = proj;
- }
-
- bitset_idx++;
- }
- }
-
- /* ok, we found some caller save register which are not in use but must be saved */
- if (keep_arity) {
- be_new_Keep(reg_class, current_ir_graph, block, keep_arity, in_keep);
- }
- }
-
- bitset_free(proj_set);
- return;
-}
-
-
-
/**
* Calls the backend code generator functions to lower Spill and
* Reload nodes into Store and Load. The backend is fully responsible
}
-/**
- * Calls the corresponding lowering function for the node.
- *
- * @param irn The node to be checked for lowering
- * @param walk_env The walker environment
- */
-static void lower_nodes_before_sched_walker(ir_node *irn, void *walk_env) {
- const arch_env_t *arch_env = walk_env;
-
- if (!is_Block(irn) && !is_Proj(irn)) {
- if (is_Call(arch_env, irn)) {
- lower_call_node(irn, walk_env);
- }
- }
-
- return;
-}
-
/**
* Calls the corresponding lowering function for the node.
-/**
- * Walks over all blocks in an irg and performs lowering need
- * to be done before scheduling (e.g. call lowering).
- *
- * @param chord_env The chordal environment containing the irg
- * @param do_copy 1 == resolve cycles with a free reg if available
- */
-void lower_nodes_before_sched(ir_graph *irg, const void *env) {
- irg_walk_blkwise_graph(irg, NULL, lower_nodes_before_sched_walker, (void *)env);
-}
-
-
-
/**
* Walks over all blocks in an irg and performs lowering need to be
* done after register allocation (e.g. perm and spill/reload lowering).
#include "bechordal.h"
-void lower_nodes_before_sched(ir_graph *irg, const void *env);
void lower_nodes_after_ra(be_chordal_env_t *chord_env, int do_copy);
#endif /* _BELOWER_H_ */
return trivial_selector;
}
-static long firm_handle_call_proj(const void *self, ir_node *proj, int is_keep) {
- return get_Proj_proj(proj);
-}
-
#ifdef WITH_LIBCORE
static void firm_register_options(lc_opt_entry_t *ent)
{
firm_get_call_abi,
firm_get_irn_handler,
firm_get_code_generator_if,
- firm_get_list_sched_selector,
- firm_handle_call_proj
+ firm_get_list_sched_selector
};
DBG((mod, LEVEL_1, "get requirements at pos %d for %+F ... ", pos, irn));
- if (is_Call_Proj(irn) && is_used_by_Keep(irn)) {
- if (pos >= 0) {
- req = NULL;
- }
- else {
- irn_req = ia32_projnum_reg_req_map[get_Proj_proj(irn)];
- memcpy(req, &(irn_req->req), sizeof(*req));
- }
-
- return req;
- }
- else if (is_Start_Proj(irn)) {
-/* irn_req = ops->cg->reg_param_req[get_Proj_proj(irn)];
- assert(irn_req && "missing requirement for regparam");
- memcpy(req, &(irn_req->req), sizeof(*req)); */
- memcpy(req, &(ia32_default_req_ia32_gp.req), sizeof(*req));
- return req;
- //return NULL;
- }
- else if (is_Proj(irn)) {
+ if (is_Proj(irn)) {
if (pos == -1) {
node_pos = ia32_translate_proj_pos(irn);
}
else
assert(0 && "unsupported Phi-Mode");
}
- else if (is_Start(irn)) {
- DB((mod, LEVEL_1, "returning reqs none for ProjX -> Start (%+F )\n", irn));
- switch (node_pos) {
- case pn_Start_X_initial_exec:
- case pn_Start_P_value_arg_base:
- case pn_Start_P_globals:
- case pn_Start_P_frame_base:
- memcpy(req, &(ia32_default_req_none.req), sizeof(*req));
- break;
- case pn_Start_T_args:
- assert(0 && "ProjT(pn_Start_T_args) should not be asked");
- }
- }
- else if (get_irn_op(irn) == op_Return && pos > 0) {
- DB((mod, LEVEL_1, "returning reqs EAX for %+F\n", irn));
- memcpy(req, &(ia32_default_req_ia32_gp_eax.req), sizeof(*req));
- }
else {
DB((mod, LEVEL_1, "returning NULL for %+F (not ia32)\n", irn));
req = NULL;
* Stack reservation and StackParam lowering.
*/
static void ia32_finish_irg(ir_graph *irg, ia32_code_gen_t *cg) {
-#if 0
- firm_dbg_module_t *mod = cg->mod;
- ir_node *frame = get_irg_frame(irg);
- ir_node *end_block = get_irg_end_block(irg);
- ir_node **returns, **in, **new_in;
- ir_node *stack_reserve, *sched_point;
- ir_node *stack_free, *new_ret, *return_block;
- int stack_size = 0, i, n_arg;
- arch_register_t *stack_reg;
- tarval *stack_size_tv;
- dbg_info *frame_dbg;
-
- /* Determine stack register */
- if (cg->has_alloca) {
- stack_reg = &ia32_gp_regs[REG_EBP];
- }
- else {
- stack_reg = &ia32_gp_regs[REG_ESP];
- }
-
- /* If frame is used, then we need to reserve some stackspace. */
- if (get_irn_n_edges(frame) > 0) {
- /* The initial stack reservation. */
- stack_size = get_type_size_bytes(get_irg_frame_type(irg));
- frame_dbg = get_irn_dbg_info(frame);
- stack_reserve = new_rd_ia32_Sub_i(frame_dbg, irg, get_nodes_block(frame), new_NoMem(), mode_Is);
- stack_size_tv = new_tarval_from_long(stack_size, mode_Is);
- set_ia32_Immop_tarval(stack_reserve, stack_size_tv);
-
- assert(stack_size && "bOrken stack layout");
-
- /* reroute all edges from frame pointer to corrected frame pointer */
- edges_reroute(frame, stack_reserve, irg);
- set_irn_n(stack_reserve, 0, frame);
-
- /* schedule frame pointer */
- if (! sched_is_scheduled(frame)) {
- sched_add_after(get_irg_start(irg), frame);
- }
-
- /* set register */
- arch_set_irn_register(cg->arch_env, frame, stack_reg);
- arch_set_irn_register(cg->arch_env, stack_reserve, stack_reg);
-
- /* insert into schedule */
- sched_add_after(frame, stack_reserve);
-
- /* Free stack for each Return node */
- returns = get_Block_cfgpred_arr(end_block);
- for (i = 0; i < get_Block_n_cfgpreds(end_block); i++) {
- assert(get_irn_opcode(returns[i]) == iro_Return && "cfgpred of endblock is not a return");
-
- return_block = get_nodes_block(returns[i]);
-
- /* free the stack */
- stack_free = new_rd_ia32_Add_i(frame_dbg, irg, return_block, stack_reserve, mode_Is);
- set_ia32_Immop_tarval(stack_free, stack_size_tv);
- arch_set_irn_register(cg->arch_env, stack_free, stack_reg);
-
- DBG((mod, LEVEL_1, "examining %+F, %+F created, block %+F", returns[i], stack_free, return_block));
-
- /* get the old Return arguments */
- n_arg = get_Return_n_ress(returns[i]);
- in = get_Return_res_arr(returns[i]);
- new_in = alloca((n_arg + 2) * sizeof(new_in[0]));
-
- /* copy the old to the new in's */
- memcpy(new_in, in, n_arg * sizeof(in[0]));
- new_in[n_arg++] = stack_free;
- new_in[n_arg++] = get_Return_mem(returns[i]);
- /* create the new return node */
- new_ret = new_rd_ia32_Return(get_irn_dbg_info(returns[i]), irg, return_block, n_arg, new_in);
-
- /* In case the return node is the only node in the block, */
- /* it is not scheduled, so we need this work-around. */
- if (! sched_is_scheduled(returns[i])) {
- sched_point = return_block;
- }
- else {
- sched_point = sched_prev(returns[i]);
- sched_remove(returns[i]);
- }
-
- /* exchange the old return with the new one */
- exchange(returns[i], new_ret);
-
- DB((mod, LEVEL_1, " ... replaced with %+F\n", new_ret));
-
- /* remove the old one from schedule and add the new nodes properly */
- sched_add_after(sched_point, new_ret);
- sched_add_after(sched_point, stack_free);
- }
- }
-#endif
}
* Dummy functions for hooks we don't need but which must be filled.
*/
static void ia32_before_sched(void *self) {
- ia32_code_gen_t *cg = self;
-
- lower_nodes_before_sched(cg->irg, cg->arch_env);
}
static void ia32_before_ra(void *self) {
&ia32_gp_regs[REG_ESP],
&ia32_gp_regs[REG_EBP],
-1,
- 0,
- NULL
+ 0
};
/**
isa = xcalloc(1, sizeof(*isa));
memcpy(isa, &ia32_isa_template, sizeof(*isa));
- isa->reg_projnum_map = new_set(ia32_cmp_reg_projnum_assoc, 1024);
-
ia32_register_init(isa);
ia32_create_opcodes();
return &ia32_irn_handler;
}
-long ia32_handle_call_proj(const void *self, ir_node *proj, int is_keep) {
- ia32_isa_t *isa = (ia32_isa_t *)self;
- long pn = get_Proj_proj(proj);
-
- if (!is_keep) {
- /* It's not a Keep proj, which means, that it is a result proj. */
- /* Possible result proj numbers are 0 and 1 */
- /* Set the correct register (depends on the mode) and the */
- /* corresponding proj number */
- if (mode_is_float(get_irn_mode(proj))) {
- assert(pn == 0 && "only one floating point result supported");
-
- /* Get the proj number for the floating point result */
- pn = ia32_get_reg_projnum(&ia32_fp_regs[REG_XMM0], isa->reg_projnum_map);
- }
- else {
- /* In case of 64bit return value, the result is */
- /* in EDX:EAX and we have two result projs. */
- switch (pn) {
- case 0:
- pn = ia32_get_reg_projnum(&ia32_gp_regs[REG_EAX], isa->reg_projnum_map);
- break;
- case 1:
- pn = ia32_get_reg_projnum(&ia32_gp_regs[REG_EDX], isa->reg_projnum_map);
- break;
- default:
- assert(0 && "only two int results supported");
- }
- }
-
- /* Set the correct proj number */
- set_Proj_proj(proj, pn);
- }
- else {
- /* Set mode to floating point if required */
- if (!strcmp(ia32_reg_classes[CLASS_ia32_fp].name,
- ia32_projnum_reg_req_map[pn]->req.cls->name)) {
- set_irn_mode(proj, mode_F);
- }
- }
-
- return pn;
-}
-
int ia32_to_appear_in_schedule(void *block_env, const ir_node *irn) {
return is_ia32_irn(irn);
}
ia32_get_call_abi,
ia32_get_irn_handler,
ia32_get_code_generator_if,
- ia32_get_list_sched_selector,
- ia32_handle_call_proj
+ ia32_get_list_sched_selector
};
const arch_register_t *bp; /** The base pointer register. */
const int stack_dir; /** -1 for decreasing, 1 for increasing. */
int num_codegens;
- set *reg_projnum_map;
} ia32_isa_t;
typedef struct _ia32_irn_ops_t {
-/* Mapping to store proj numbers for registers */
-
-struct ia32_reg_projnum_assoc {
- const arch_register_t *reg;
- long proj_num;
-};
-
-int ia32_cmp_reg_projnum_assoc(const void *a, const void *b, size_t len) {
- const struct ia32_reg_projnum_assoc *x = a;
- const struct ia32_reg_projnum_assoc *y = b;
-
- return !(x->reg == y->reg);
-}
-
-static struct ia32_reg_projnum_assoc *get_reg_projnum_assoc(const arch_register_t *reg, set *reg_set) {
- struct ia32_reg_projnum_assoc templ;
- unsigned int hash;
-
- templ.reg = reg;
- templ.proj_num = -1;
- hash = HASH_PTR(reg);
-
- return set_insert(reg_set, &templ, sizeof(templ), hash);
-}
-
-void ia32_set_reg_projnum(const arch_register_t *reg, long proj_num, set *reg_set) {
- struct ia32_reg_projnum_assoc *assoc = get_reg_projnum_assoc(reg, reg_set);
- assoc->proj_num = proj_num;
-}
-
-long ia32_get_reg_projnum(const arch_register_t *reg, set *reg_set) {
- struct ia32_reg_projnum_assoc *assoc = get_reg_projnum_assoc(reg, reg_set);
- return assoc->proj_num;
-}
-
-
-
/**
* Check all parameters and determine the maximum number of parameters
* to pass in gp regs resp. in fp regs.
void ia32_set_firm_reg(ir_node *irn, const arch_register_t *reg, set *reg_set);
const arch_register_t *ia32_get_firm_reg(const ir_node *irn, set *reg_set);
-int ia32_cmp_reg_projnum_assoc(const void *a, const void *b, size_t len);
-void ia32_set_reg_projnum(const arch_register_t *reg, long proj_num, set *reg_set);
-long ia32_get_reg_projnum(const arch_register_t *reg, set *reg_set);
-
int ia32_get_n_regparam_class(int n, ir_mode **modes, int *n_int, int *n_float);
const arch_register_t *ia32_get_RegParam_reg(int n, ir_mode **modes, long nr, unsigned cc);
#include "../arch/archop.h" /* we need this for Min and Max nodes */
#include "ia32_transform.h"
#include "ia32_new_nodes.h"
-#include "ia32_map_regs.h"
#include "gen_ia32_regalloc_if.h"
/**
* Transforms a Call and its arguments corresponding to the calling convention.
*
- * @param mod the debug module
- * @param block the block the new node should belong to
- * @param node the ir Call node
- * @param dummy mode doesn't matter
- * @return the created ia32 Call node
+ * @param env The transformation environment
+ * @return The created ia32 Call node
*/
static ir_node *gen_Call(ia32_transform_env_t *env) {
-#if 0
- const ia32_register_req_t **in_req;
- ir_node **in;
- ir_node *new_call, *sync;
- int i, j, n_new_call_in, ignore = 0;
- ia32_attr_t *attr;
- dbg_info *dbg = env->dbg;
- ir_graph *irg = env->irg;
- ir_node *block = env->block;
- ir_node *call = env->irn;
- ir_node **stack_param = NULL;
- ir_node **param = get_Call_param_arr(call);
- ir_node *call_Mem = get_Call_mem(call);
- unsigned cc = get_method_calling_convention(get_Call_type(call));
- int n = get_Call_n_params(call);
- int stack_idx = 0;
- int biggest_n = -1;
- int n_res = get_method_n_ress(get_Call_type(call));
-
- assert(n_res <= 2 && "method with more than two results not supported");
-
- if (cc & cc_reg_param)
- biggest_n = ia32_get_n_regparam_class(n, param, &ignore, &ignore);
-
- /* remember: biggest_n = x means we can pass (x + 1) parameters in register */
-
- /* do we need to pass arguments on stack? */
- if (biggest_n + 1 < n)
- stack_param = xcalloc(n - biggest_n - 1, sizeof(ir_node *));
-
- /* we need at least one in, either for the stack params or the call_Mem */
- n_new_call_in = biggest_n + 2;
-
- /* the call has one IN for all stack parameter and one IN for each reg param */
- in = xcalloc(n_new_call_in, sizeof(ir_node *));
- in_req = xcalloc(n_new_call_in, sizeof(arch_register_req_t *));
-
- /* loop over all parameters and set the register requirements */
- for (i = 0; i <= biggest_n && (cc & cc_reg_param); i++) {
- in_req[i] = ia32_get_RegParam_req(n, param, i, cc);
- }
- stack_idx = i;
-
- /* create remaining stack parameters */
- if (cc & cc_last_on_top) {
- for (i = stack_idx; i < n; i++) {
- /* pass it on stack */
- if (mode_is_float(get_irn_mode(param[i]))) {
- stack_param[i - stack_idx] = new_rd_ia32_fStackArg(get_irn_dbg_info(param[i]), irg,
- block, call_Mem, param[i], mode_M);
- }
- else {
- stack_param[i - stack_idx] = new_rd_ia32_StackArg(get_irn_dbg_info(param[i]), irg,
- block, call_Mem, param[i], mode_M);
- }
- /* set the argument number for later lowering */
- set_ia32_pncode(stack_param[i - stack_idx], i - stack_idx);
- }
- }
- else {
- for (i = n - 1, j = 0; i >= stack_idx; i--, j++) {
- /* pass it on stack */
- if (mode_is_float(get_irn_mode(param[i]))) {
- stack_param[j] = new_rd_ia32_fStackArg(get_irn_dbg_info(param[i]), irg,
- block, call_Mem, param[i], mode_M);
- }
- else {
- stack_param[j] = new_rd_ia32_StackArg(get_irn_dbg_info(param[i]), irg,
- block, call_Mem, param[i], mode_M);
- }
- /* set the argument number for later lowering */
- set_ia32_pncode(stack_param[j], j);
- }
- }
-
- if (stack_param) {
- sync = new_r_Sync(irg, block, n - biggest_n - 1, stack_param);
- in[n_new_call_in - 1] = sync;
- }
- else {
- in[n_new_call_in - 1] = call_Mem;
- }
-
- /* create the new node */
- new_call = new_rd_ia32_Call(dbg, irg, block, n_new_call_in, in);
- set_ia32_Immop_attr(new_call, get_Call_ptr(call));
-
- /* set register requirements for in and out */
- attr = get_ia32_attr(new_call);
- attr->in_req = in_req;
-
- set_ia32_n_res(new_call, n_res);
-
- if (n_res > 0) {
- attr->out_req = xcalloc(n_res, sizeof(ia32_register_req_t *));
- attr->slots = xcalloc(n_res, sizeof(arch_register_t *));
- }
-
- /* two results only appear when a 64bit int result is broken up into two 32bit results */
- if (n_res == 1) {
- if (mode_is_float(get_type_mode(get_method_res_type(get_Call_type(call), 0))))
- attr->out_req[0] = &ia32_default_req_ia32_fp_xmm0;
- else
- attr->out_req[0] = &ia32_default_req_ia32_gp_eax;
- }
- else if (n_res == 2) {
- attr->out_req[0] = &ia32_default_req_ia32_gp_eax;
- attr->out_req[1] = &ia32_default_req_ia32_gp_edx;
- }
-
- /* stack parameter has no OUT register */
- attr->in_req[n_new_call_in - 1] = &ia32_default_req_none;
-
- return new_call;
-#endif
}
-/**
- * Transform the argument projs from a start node corresponding to the
- * calling convention.
- * It transforms "Proj Arg x -> ProjT -> Start <- ProjM" into
- * "RegParam x -> ProjT -> Start" OR
- * "StackParam x -> ProjM -> Start"
- * whether parameter is passed in register or on stack.
- *
- * @param mod the debug module
- * @param block the block the nodes should belong to
- * @param proj the ProjT node which points to Start
- * @param start the Start node
- * @return Should be always NULL
- */
-static ir_node *gen_Proj_Start(ia32_transform_env_t *env, ir_node *proj, ir_node *start) {
-#if 0
- const ia32_register_req_t *temp_req;
- const ir_edge_t *edge;
- ir_node *succ, *irn;
- ir_node **projargs;
- ir_mode *mode;
- int n, i;
- unsigned cc;
- ir_node *proj_M = get_irg_initial_mem(current_ir_graph);
- entity *irg_ent = get_irg_entity(current_ir_graph);
- ir_type *tp = get_entity_type(irg_ent);
- int cur_pn = 0;
- ir_graph *irg = env->irg;
- ir_node *block = env->block;
-
- assert(is_Method_type(tp) && "irg type is not a method");
-
- switch(get_Proj_proj(proj)) {
- case pn_Start_T_args:
- /* We cannot use get_method_n_params here as the function might
- be variadic or one argument is not used. */
- n = get_irn_n_edges(proj);
-
- /* Allocate memory for all non variadic parameters in advance to be on the save side */
- env->cg->reg_param_req = xcalloc(get_method_n_params(tp), sizeof(ia32_register_req_t *));
-
- /* we are done here when there are no parameters */
- if (n < 1)
- break;
-
- /* temporary remember all proj arg x */
- projargs = xcalloc(n, sizeof(ir_node *));
-
- i = 0;
- foreach_out_edge((const ir_node *)proj, edge) {
- succ = get_edge_src_irn(edge);
- assert(is_Proj(succ) && "non-Proj from a Proj_T (pn_Start_T_args).");
- projargs[i++] = succ;
- }
-
- cc = get_method_calling_convention(tp);
-
- /* loop over all parameters and check whether its a int or float */
- for (i = 0; i < n; i++) {
- mode = get_irn_mode(projargs[i]);
- cur_pn = get_Proj_proj(projargs[i]);
-
- if (cc & cc_reg_param) {
- temp_req = ia32_get_RegParam_req(n, projargs, cur_pn, cc);
- }
- else {
- temp_req = NULL;
- }
-
- if (temp_req) {
- /* passed in register */
- env->cg->reg_param_req[cur_pn] = temp_req;
- }
- else {
- /* passed on stack */
- if (mode_is_float(mode))
- irn = new_rd_ia32_fStackParam(get_irn_dbg_info(projargs[i]), irg, block, proj_M, mode);
- else
- irn = new_rd_ia32_StackParam(get_irn_dbg_info(projargs[i]), irg, block, proj_M, mode);
-
- set_ia32_pncode(irn, cur_pn);
-
- /* kill the old "Proj Arg" and replace with the new stack param */
- exchange(projargs[i], irn);
- }
- }
-
- free(projargs);
-
- break;
- case pn_Start_P_frame_base:
- case pn_Start_X_initial_exec:
- case pn_Start_M:
- case pn_Start_P_globals:
- case pn_Start_P_value_arg_base:
- break;
- default:
- assert(0 && "unsupported Proj(Start)");
- }
-
- return NULL;
-#endif
-}
-
-/**
- * Transform some Proj's (Proj_Proj, Proj_Start, Proj_Cmp, Proj_Cond, Proj_Call).
- * All others are ignored.
- *
- * @param mod the debug module
- * @param block the block the new node should belong to
- * @param node the ir Proj node
- * @param mode mode of the Proj
- * @return The transformed node.
- */
-static ir_node *gen_Proj(ia32_transform_env_t *env) {
- ir_node *new_node = NULL;
- ir_node *pred = get_Proj_pred(env->irn);
-
- if (env->mode == mode_M)
- return NULL;
-
- if (get_irn_op(pred) == op_Start) {
- new_node = gen_Proj_Start(env, env->irn, pred);
- }
-
- return new_node;
-}
-
-
-
/*********************************************************
* _ _ _
* (_) | | (_)
GEN(Store);
GEN(Cond);
- IGN(Proj);
IGN(Call);
IGN(Alloc);
+ IGN(Proj);
IGN(Block);
IGN(Start);
IGN(End);
projects / libfirm / commitdiff