#include "irtools.h"
#include "iroptimize.h"
#include "instrument.h"
+#include "iropt_t.h"
#include "../beabi.h"
#include "../beirg.h"
-#include "../benode_t.h"
+#include "../benode.h"
#include "../belower.h"
#include "../besched.h"
#include "be.h"
DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
-/* TODO: ugly */
-static set *cur_reg_set = NULL;
-
ir_mode *mode_fpcw = NULL;
ia32_code_gen_t *ia32_current_cg = NULL;
}
/* Creates the unique per irg GP NoReg node. */
-ir_node *ia32_new_NoReg_gp(ia32_code_gen_t *cg) {
+ir_node *ia32_new_NoReg_gp(ia32_code_gen_t *cg)
+{
return create_const(cg, &cg->noreg_gp, new_bd_ia32_NoReg_GP,
&ia32_gp_regs[REG_GP_NOREG]);
}
-ir_node *ia32_new_NoReg_vfp(ia32_code_gen_t *cg) {
+ir_node *ia32_new_NoReg_vfp(ia32_code_gen_t *cg)
+{
return create_const(cg, &cg->noreg_vfp, new_bd_ia32_NoReg_VFP,
&ia32_vfp_regs[REG_VFP_NOREG]);
}
-ir_node *ia32_new_NoReg_xmm(ia32_code_gen_t *cg) {
+ir_node *ia32_new_NoReg_xmm(ia32_code_gen_t *cg)
+{
return create_const(cg, &cg->noreg_xmm, new_bd_ia32_NoReg_XMM,
&ia32_xmm_regs[REG_XMM_NOREG]);
}
-ir_node *ia32_new_Unknown_gp(ia32_code_gen_t *cg) {
+ir_node *ia32_new_Unknown_gp(ia32_code_gen_t *cg)
+{
return create_const(cg, &cg->unknown_gp, new_bd_ia32_Unknown_GP,
&ia32_gp_regs[REG_GP_UKNWN]);
}
-ir_node *ia32_new_Unknown_vfp(ia32_code_gen_t *cg) {
+ir_node *ia32_new_Unknown_vfp(ia32_code_gen_t *cg)
+{
return create_const(cg, &cg->unknown_vfp, new_bd_ia32_Unknown_VFP,
&ia32_vfp_regs[REG_VFP_UKNWN]);
}
-ir_node *ia32_new_Unknown_xmm(ia32_code_gen_t *cg) {
+ir_node *ia32_new_Unknown_xmm(ia32_code_gen_t *cg)
+{
return create_const(cg, &cg->unknown_xmm, new_bd_ia32_Unknown_XMM,
&ia32_xmm_regs[REG_XMM_UKNWN]);
}
-ir_node *ia32_new_Fpu_truncate(ia32_code_gen_t *cg) {
+ir_node *ia32_new_Fpu_truncate(ia32_code_gen_t *cg)
+{
return create_const(cg, &cg->fpu_trunc_mode, new_bd_ia32_ChangeCW,
&ia32_fp_cw_regs[REG_FPCW]);
}
* |___/
**************************************************/
-/**
- * Return register requirements for an ia32 node.
- * If the node returns a tuple (mode_T) then the proj's
- * will be asked for this information.
- */
-static const arch_register_req_t *ia32_get_irn_reg_req(const ir_node *node,
- int pos)
+static const arch_register_req_t *get_ia32_SwitchJmp_out_req(
+ const ir_node *node, int pos)
{
- ir_mode *mode = get_irn_mode(node);
- long node_pos;
-
- if (mode == mode_X || is_Block(node)) {
- return arch_no_register_req;
- }
-
- if (mode == mode_T && pos < 0) {
- return arch_no_register_req;
- }
-
- node_pos = pos == -1 ? 0 : pos;
- if (is_Proj(node)) {
- if (mode == mode_M || pos >= 0) {
- return arch_no_register_req;
- }
-
- node_pos = (pos == -1) ? get_Proj_proj(node) : pos;
- node = skip_Proj_const(node);
- }
-
- if (is_ia32_irn(node)) {
- const arch_register_req_t *req;
- if (pos >= 0)
- req = get_ia32_in_req(node, pos);
- else
- req = get_ia32_out_req(node, node_pos);
-
- assert(req != NULL);
-
- return req;
- }
-
- /* unknowns should be transformed already */
+ (void) node;
+ (void) pos;
return arch_no_register_req;
}
-static arch_irn_class_t ia32_classify(const ir_node *irn) {
+static arch_irn_class_t ia32_classify(const ir_node *irn)
+{
arch_irn_class_t classification = 0;
- irn = skip_Proj_const(irn);
-
- if (is_cfop(irn))
- classification |= arch_irn_class_branch;
-
- if (! is_ia32_irn(irn))
- return classification;
+ assert(is_ia32_irn(irn));
if (is_ia32_is_reload(irn))
classification |= arch_irn_class_reload;
ir_graph *irg; /**< The associated graph. */
} ia32_abi_env_t;
-static ir_entity *ia32_get_frame_entity(const ir_node *irn) {
+static ir_entity *ia32_get_frame_entity(const ir_node *irn)
+{
return is_ia32_irn(irn) ? get_ia32_frame_ent(irn) : NULL;
}
-static void ia32_set_frame_entity(ir_node *irn, ir_entity *ent) {
+static void ia32_set_frame_entity(ir_node *irn, ir_entity *ent)
+{
set_ia32_frame_ent(irn, ent);
}
* Destroy the callback object.
* @param self The callback object.
*/
-static void ia32_abi_done(void *self) {
+static void ia32_abi_done(void *self)
+{
free(self);
}
/**
* Build the between type and entities if not already build.
*/
-static void ia32_build_between_type(void) {
+static void ia32_build_between_type(void)
+{
#define IDENT(s) new_id_from_chars(s, sizeof(s)-1)
if (! between_type) {
- ir_type *old_bp_type = new_type_primitive(IDENT("bp"), mode_Iu);
- ir_type *ret_addr_type = new_type_primitive(IDENT("return_addr"), mode_Iu);
+ ir_type *old_bp_type = new_type_primitive(mode_Iu);
+ ir_type *ret_addr_type = new_type_primitive(mode_Iu);
between_type = new_type_struct(IDENT("ia32_between_type"));
old_bp_ent = new_entity(between_type, IDENT("old_bp"), old_bp_type);
/**
* Return the stack entity that contains the return address.
*/
-ir_entity *ia32_get_return_address_entity(void) {
+ir_entity *ia32_get_return_address_entity(void)
+{
ia32_build_between_type();
return ia32_curr_fp_ommitted ? omit_fp_ret_addr_ent : ret_addr_ent;
}
/**
* Return the stack entity that contains the frame address.
*/
-ir_entity *ia32_get_frame_address_entity(void) {
+ir_entity *ia32_get_frame_address_entity(void)
+{
ia32_build_between_type();
return ia32_curr_fp_ommitted ? NULL : old_bp_ent;
}
* @param obstack The obstack to use for allocation of the returned nodes array
* @return The inverse operation or NULL if operation invertible
*/
-static arch_inverse_t *ia32_get_inverse(const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obst) {
+static arch_inverse_t *ia32_get_inverse(const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obst)
+{
ir_mode *mode;
ir_mode *irn_mode;
ir_node *block, *noreg, *nomem;
ia32_abi_epilogue
};
-/* fill register allocator interface */
-
+/* register allocator interface */
static const arch_irn_ops_t ia32_irn_ops = {
- ia32_get_irn_reg_req,
+ get_ia32_in_req,
+ ia32_classify,
+ ia32_get_frame_entity,
+ ia32_set_frame_entity,
+ ia32_set_frame_offset,
+ ia32_get_sp_bias,
+ ia32_get_inverse,
+ ia32_get_op_estimated_cost,
+ ia32_possible_memory_operand,
+ ia32_perform_memory_operand,
+};
+
+/* special register allocator interface for SwitchJmp
+ as it possibly has a WIDE range of Proj numbers.
+ We don't want to allocate output for register constraints for
+ all these. */
+static const arch_irn_ops_t ia32_SwitchJmp_irn_ops = {
+ /* Note: we also use SwitchJmp_out_req for the inputs too:
+ This is because the bearch API has a conceptual problem at the moment.
+ Querying for negative proj numbers which can happen for switchs
+ isn't possible and will result in inputs getting queried */
+ get_ia32_SwitchJmp_out_req,
ia32_classify,
ia32_get_frame_entity,
ia32_set_frame_entity,
#define ID(s) new_id_from_chars(s, sizeof(s) - 1)
-static void ia32_before_abi(void *self) {
+static void ia32_before_abi(void *self)
+{
lower_mode_b_config_t lower_mode_b_config = {
mode_Iu, /* lowered mode */
mode_Bu, /* preferred mode for set */
ir_lower_mode_b(cg->irg, &lower_mode_b_config);
if (cg->dump)
be_dump(cg->irg, "-lower_modeb", dump_ir_block_graph_sched);
+
if (cg->gprof) {
if (mcount == NULL) {
- ir_type *tp = new_type_method(ID("FKT.mcount"), 0, 0);
+ ir_type *tp = new_type_method(0, 0);
mcount = new_entity(get_glob_type(), ID("mcount"), tp);
/* FIXME: enter the right ld_ident here */
set_entity_ld_ident(mcount, get_entity_ident(mcount));
- set_entity_visibility(mcount, visibility_external_allocated);
+ set_entity_visibility(mcount, ir_visibility_external);
}
instrument_initcall(cg->irg, mcount);
}
*/
static void ia32_prepare_graph(void *self)
{
- ia32_code_gen_t *cg = self;
- ir_graph *irg = cg->irg;
-
- /* do local optimizations */
- optimize_graph_df(irg);
-
- /* we have to do cfopt+remove_critical_edges as we can't have Bad-blocks
- * or critical edges in the backend */
- optimize_cf(irg);
- remove_critical_cf_edges(irg);
-
- /* TODO: we often have dead code reachable through out-edges here. So for
- * now we rebuild edges (as we need correct user count for code selection)
- */
-#if 1
- edges_deactivate(cg->irg);
- edges_activate(cg->irg);
-#endif
-
- if (cg->dump)
- be_dump(cg->irg, "-pre_transform", dump_ir_block_graph_sched);
+ ia32_code_gen_t *cg = self;
switch (be_transformer) {
case TRANSFORMER_DEFAULT:
/**
* Called before the register allocator.
*/
-static void ia32_before_ra(void *self) {
+static void ia32_before_ra(void *self)
+{
ia32_code_gen_t *cg = self;
/* setup fpu rounding modes */
/**
* Transforms a be_Reload into a ia32 Load.
*/
-static void transform_to_Load(ia32_code_gen_t *cg, ir_node *node) {
+static void transform_to_Load(ia32_code_gen_t *cg, ir_node *node)
+{
ir_graph *irg = get_irn_irg(node);
dbg_info *dbg = get_irn_dbg_info(node);
ir_node *block = get_nodes_block(node);
/**
* Transforms a be_Spill node into a ia32 Store.
*/
-static void transform_to_Store(ia32_code_gen_t *cg, ir_node *node) {
+static void transform_to_Store(ia32_code_gen_t *cg, ir_node *node)
+{
ir_graph *irg = get_irn_irg(node);
dbg_info *dbg = get_irn_dbg_info(node);
ir_node *block = get_nodes_block(node);
exchange(node, store);
}
-static ir_node *create_push(ia32_code_gen_t *cg, ir_node *node, ir_node *schedpoint, ir_node *sp, ir_node *mem, ir_entity *ent) {
+static ir_node *create_push(ia32_code_gen_t *cg, ir_node *node, ir_node *schedpoint, ir_node *sp, ir_node *mem, ir_entity *ent)
+{
dbg_info *dbg = get_irn_dbg_info(node);
ir_node *block = get_nodes_block(node);
ir_node *noreg = ia32_new_NoReg_gp(cg);
return push;
}
-static ir_node *create_pop(ia32_code_gen_t *cg, ir_node *node, ir_node *schedpoint, ir_node *sp, ir_entity *ent) {
+static ir_node *create_pop(ia32_code_gen_t *cg, ir_node *node, ir_node *schedpoint, ir_node *sp, ir_entity *ent)
+{
dbg_info *dbg = get_irn_dbg_info(node);
ir_node *block = get_nodes_block(node);
ir_node *noreg = ia32_new_NoReg_gp(cg);
}
in[0] = sp;
- keep = be_new_Keep(&ia32_reg_classes[CLASS_ia32_gp], block, 1, in);
+ keep = be_new_Keep(block, 1, in);
sched_add_before(node, keep);
/* exchange memprojs */
/**
* Block-Walker: Calls the transform functions Spill and Reload.
*/
-static void ia32_after_ra_walker(ir_node *block, void *env) {
+static void ia32_after_ra_walker(ir_node *block, void *env)
+{
ir_node *node, *prev;
ia32_code_gen_t *cg = env;
* We transform Spill and Reload here. This needs to be done before
* stack biasing otherwise we would miss the corrected offset for these nodes.
*/
-static void ia32_after_ra(void *self) {
+static void ia32_after_ra(void *self)
+{
ia32_code_gen_t *cg = self;
ir_graph *irg = cg->irg;
be_fec_env_t *fec_env = be_new_frame_entity_coalescer(cg->birg);
* virtual with real x87 instructions, creating a block schedule and peephole
* optimisations.
*/
-static void ia32_finish(void *self) {
+static void ia32_finish(void *self)
+{
ia32_code_gen_t *cg = self;
ir_graph *irg = cg->irg;
* Emits the code, closes the output file and frees
* the code generator interface.
*/
-static void ia32_codegen(void *self) {
+static void ia32_codegen(void *self)
+{
ia32_code_gen_t *cg = self;
ir_graph *irg = cg->irg;
- ia32_gen_routine(cg, irg);
-
- cur_reg_set = NULL;
+ if (ia32_cg_config.emit_machcode) {
+ ia32_gen_binary_routine(cg, irg);
+ } else {
+ ia32_gen_routine(cg, irg);
+ }
/* remove it from the isa */
cg->isa->cg = NULL;
ia32_current_cg = NULL;
/* de-allocate code generator */
- del_set(cg->reg_set);
free(cg);
}
/**
* Returns the node representing the PIC base.
*/
-static ir_node *ia32_get_pic_base(void *self) {
+static ir_node *ia32_get_pic_base(void *self)
+{
ir_node *block;
ia32_code_gen_t *cg = self;
ir_node *get_eip = cg->get_eip;
/**
* Initializes a IA32 code generator.
*/
-static void *ia32_cg_init(be_irg_t *birg) {
+static void *ia32_cg_init(be_irg_t *birg)
+{
ia32_isa_t *isa = (ia32_isa_t *)birg->main_env->arch_env;
ia32_code_gen_t *cg = XMALLOCZ(ia32_code_gen_t);
cg->impl = &ia32_code_gen_if;
cg->irg = birg->irg;
- cg->reg_set = new_set(ia32_cmp_irn_reg_assoc, 1024);
cg->isa = isa;
cg->birg = birg;
cg->blk_sched = NULL;
}
#endif /* NDEBUG */
- cur_reg_set = cg->reg_set;
-
assert(ia32_current_cg == NULL);
ia32_current_cg = cg;
/**
* Initializes the backend ISA.
*/
-static arch_env_t *ia32_init(FILE *file_handle) {
+static arch_env_t *ia32_init(FILE *file_handle)
+{
static int inited = 0;
ia32_isa_t *isa;
int i, n;
ia32_register_init();
ia32_create_opcodes(&ia32_irn_ops);
+ /* special handling for SwitchJmp */
+ op_ia32_SwitchJmp->ops.be_ops = &ia32_SwitchJmp_irn_ops;
be_emit_init(file_handle);
isa->regs_16bit = pmap_create();
be_emit_cstring(".Ltext0:\n");
be_emit_write_line();
- /* we mark referenced global entities, so we can only emit those which
- * are actually referenced. (Note: you mustn't use the type visited flag
- * elsewhere in the backend)
- */
- inc_master_type_visited();
-
return &isa->arch_env;
}
/**
* Closes the output file and frees the ISA structure.
*/
-static void ia32_done(void *self) {
+static void ia32_done(void *self)
+{
ia32_isa_t *isa = self;
/* emit now all global declarations */
- be_gas_emit_decls(isa->arch_env.main_env, 1);
+ be_gas_emit_decls(isa->arch_env.main_env);
pmap_destroy(isa->regs_16bit);
pmap_destroy(isa->regs_8bit);
* - the virtual floating point registers
* - the SSE vector register set
*/
-static unsigned ia32_get_n_reg_class(const void *self) {
- (void) self;
+static unsigned ia32_get_n_reg_class(void)
+{
return N_CLASSES;
}
/**
* Return the register class for index i.
*/
-static const arch_register_class_t *ia32_get_reg_class(const void *self,
- unsigned i)
+static const arch_register_class_t *ia32_get_reg_class(unsigned i)
{
- (void) self;
assert(i < N_CLASSES);
return &ia32_reg_classes[i];
}
* @param mode The mode in question.
* @return A register class which can hold values of the given mode.
*/
-const arch_register_class_t *ia32_get_reg_class_for_mode(const void *self,
- const ir_mode *mode)
+const arch_register_class_t *ia32_get_reg_class_for_mode(const ir_mode *mode)
{
- (void) self;
-
if (mode_is_float(mode)) {
return ia32_cg_config.use_sse2 ? &ia32_reg_classes[CLASS_ia32_xmm] : &ia32_reg_classes[CLASS_ia32_vfp];
}
return &ia32_reg_classes[CLASS_ia32_gp];
}
+/**
+ * Returns the register for parameter nr.
+ */
+static const arch_register_t *ia32_get_RegParam_reg(unsigned cc, unsigned nr,
+ const ir_mode *mode)
+{
+ static const arch_register_t *gpreg_param_reg_fastcall[] = {
+ &ia32_gp_regs[REG_ECX],
+ &ia32_gp_regs[REG_EDX],
+ NULL
+ };
+ static const unsigned MAXNUM_GPREG_ARGS = 3;
+
+ static const arch_register_t *gpreg_param_reg_regparam[] = {
+ &ia32_gp_regs[REG_EAX],
+ &ia32_gp_regs[REG_EDX],
+ &ia32_gp_regs[REG_ECX]
+ };
+
+ static const arch_register_t *gpreg_param_reg_this[] = {
+ &ia32_gp_regs[REG_ECX],
+ NULL,
+ NULL
+ };
+
+ static const arch_register_t *fpreg_sse_param_reg_std[] = {
+ &ia32_xmm_regs[REG_XMM0],
+ &ia32_xmm_regs[REG_XMM1],
+ &ia32_xmm_regs[REG_XMM2],
+ &ia32_xmm_regs[REG_XMM3],
+ &ia32_xmm_regs[REG_XMM4],
+ &ia32_xmm_regs[REG_XMM5],
+ &ia32_xmm_regs[REG_XMM6],
+ &ia32_xmm_regs[REG_XMM7]
+ };
+
+ static const arch_register_t *fpreg_sse_param_reg_this[] = {
+ NULL, /* in case of a "this" pointer, the first parameter must not be a float */
+ };
+ static const unsigned MAXNUM_SSE_ARGS = 8;
+
+ if ((cc & cc_this_call) && nr == 0)
+ return gpreg_param_reg_this[0];
+
+ if (! (cc & cc_reg_param))
+ return NULL;
+
+ if (mode_is_float(mode)) {
+ if (!ia32_cg_config.use_sse2 || (cc & cc_fpreg_param) == 0)
+ return NULL;
+ if (nr >= MAXNUM_SSE_ARGS)
+ return NULL;
+
+ if (cc & cc_this_call) {
+ return fpreg_sse_param_reg_this[nr];
+ }
+ return fpreg_sse_param_reg_std[nr];
+ } else if (mode_is_int(mode) || mode_is_reference(mode)) {
+ unsigned num_regparam;
+
+ if (get_mode_size_bits(mode) > 32)
+ return NULL;
+
+ if (nr >= MAXNUM_GPREG_ARGS)
+ return NULL;
+
+ if (cc & cc_this_call) {
+ return gpreg_param_reg_this[nr];
+ }
+ num_regparam = cc & ~cc_bits;
+ if (num_regparam == 0) {
+ /* default fastcall */
+ return gpreg_param_reg_fastcall[nr];
+ }
+ if (nr < num_regparam)
+ return gpreg_param_reg_regparam[nr];
+ return NULL;
+ }
+
+ panic("unknown argument mode");
+}
+
/**
* Get the ABI restrictions for procedure calls.
* @param self The this pointer.
/**
* Returns the estimated execution time of an ia32 irn.
*/
-static sched_timestep_t ia32_sched_exectime(void *env, const ir_node *irn) {
+static sched_timestep_t ia32_sched_exectime(void *env, const ir_node *irn)
+{
(void) env;
return is_ia32_irn(irn) ? ia32_get_op_estimated_cost(irn) : 1;
}
/**
* Returns the necessary byte alignment for storing a register of given class.
*/
-static int ia32_get_reg_class_alignment(const void *self,
- const arch_register_class_t *cls)
+static int ia32_get_reg_class_alignment(const arch_register_class_t *cls)
{
ir_mode *mode = arch_register_class_mode(cls);
int bytes = get_mode_size_bytes(mode);
- (void) self;
if (mode_is_float(mode) && bytes > 8)
return 16;
}
static const be_execution_unit_t ***ia32_get_allowed_execution_units(
- const void *self, const ir_node *irn)
+ const ir_node *irn)
{
static const be_execution_unit_t *_allowed_units_BRANCH[] = {
&ia32_execution_units_BRANCH[IA32_EXECUNIT_TP_BRANCH_BRANCH1],
NULL
};
const be_execution_unit_t ***ret;
- (void) self;
if (is_ia32_irn(irn)) {
ret = get_ia32_exec_units(irn);
/**
* Return the abstract ia32 machine.
*/
-static const be_machine_t *ia32_get_machine(const void *self) {
+static const be_machine_t *ia32_get_machine(const void *self)
+{
const ia32_isa_t *isa = self;
return isa->cpu;
}
return NULL;
}
-static void ia32_mark_remat(const void *self, ir_node *node) {
- (void) self;
+static void ia32_mark_remat(ir_node *node)
+{
if (is_ia32_irn(node)) {
set_ia32_is_remat(node);
}
}
/**
- * Check for Abs or -Abs.
+ * Check if Mux(sel, t, f) would represent an Abs (or -Abs).
*/
-static int psi_is_Abs_or_Nabs(ir_node *cmp, ir_node *sel, ir_node *t, ir_node *f) {
- ir_node *l, *r;
+static bool mux_is_abs(ir_node *sel, ir_node *mux_true, ir_node *mux_false)
+{
+ ir_node *cmp_left;
+ ir_node *cmp_right;
+ ir_node *cmp;
pn_Cmp pnc;
- if (cmp == NULL)
- return 0;
+ if (!is_Proj(sel))
+ return false;
+ cmp = get_Proj_pred(sel);
+ if (!is_Cmp(cmp))
+ return false;
/* must be <, <=, >=, > */
pnc = get_Proj_proj(sel);
- if (pnc != pn_Cmp_Ge && pnc != pn_Cmp_Gt &&
- pnc != pn_Cmp_Le && pnc != pn_Cmp_Lt)
- return 0;
+ switch (pnc) {
+ case pn_Cmp_Ge:
+ case pn_Cmp_Gt:
+ case pn_Cmp_Le:
+ case pn_Cmp_Lt:
+ case pn_Cmp_Uge:
+ case pn_Cmp_Ug:
+ case pn_Cmp_Ul:
+ case pn_Cmp_Ule:
+ break;
+ default:
+ return false;
+ }
- l = get_Cmp_left(cmp);
- r = get_Cmp_right(cmp);
+ if (!is_negated_value(mux_true, mux_false))
+ return false;
/* must be x cmp 0 */
- if ((l != t && l != f) || !is_Const(r) || !is_Const_null(r))
+ cmp_right = get_Cmp_right(cmp);
+ if (!is_Const(cmp_right) || !is_Const_null(cmp_right))
return 0;
- if ((!is_Minus(t) || get_Minus_op(t) != f) &&
- (!is_Minus(f) || get_Minus_op(f) != t))
- return 0;
- return 1;
+ cmp_left = get_Cmp_left(cmp);
+ if (cmp_left != mux_true && cmp_left != mux_false)
+ return false;
+
+ return true;
}
/**
- * Check for Abs only
+ * Check if Mux(sel, mux_true, mux_false) would represent a Max or Min operation
*/
-static int psi_is_Abs(ir_node *cmp, ir_node *sel, ir_node *t, ir_node *f) {
- ir_node *l, *r;
+static bool mux_is_float_min_max(ir_node *sel, ir_node *mux_true,
+ ir_node *mux_false)
+{
+ ir_node *cmp_l;
+ ir_node *cmp_r;
+ ir_node *cmp;
pn_Cmp pnc;
- if (cmp == NULL)
- return 0;
-
- /* must be <, <=, >=, > */
+ if (!is_Proj(sel))
+ return false;
+ cmp = get_Proj_pred(sel);
+ if (!is_Cmp(cmp))
+ return false;
+
+ cmp_l = get_Cmp_left(cmp);
+ cmp_r = get_Cmp_right(cmp);
+ if (!mode_is_float(get_irn_mode(cmp_l)))
+ return false;
+
+ /* check for min/max. They're defined as (C-Semantik):
+ * min(a, b) = a < b ? a : b
+ * or min(a, b) = a <= b ? a : b
+ * max(a, b) = a > b ? a : b
+ * or max(a, b) = a >= b ? a : b
+ * (Note we only handle float min/max here)
+ */
pnc = get_Proj_proj(sel);
- if (pnc != pn_Cmp_Ge && pnc != pn_Cmp_Gt &&
- pnc != pn_Cmp_Le && pnc != pn_Cmp_Lt)
- return 0;
+ switch (pnc) {
+ case pn_Cmp_Ge:
+ case pn_Cmp_Gt:
+ /* this is a max */
+ if (cmp_l == mux_true && cmp_r == mux_false)
+ return true;
+ break;
+ case pn_Cmp_Le:
+ case pn_Cmp_Lt:
+ /* this is a min */
+ if (cmp_l == mux_true && cmp_r == mux_false)
+ return true;
+ break;
+ case pn_Cmp_Uge:
+ case pn_Cmp_Ug:
+ /* this is a min */
+ if (cmp_l == mux_false && cmp_r == mux_true)
+ return true;
+ break;
+ case pn_Cmp_Ule:
+ case pn_Cmp_Ul:
+ /* this is a max */
+ if (cmp_l == mux_false && cmp_r == mux_true)
+ return true;
+ break;
- l = get_Cmp_left(cmp);
- r = get_Cmp_right(cmp);
+ default:
+ break;
+ }
- /* must be x cmp 0 */
- if ((l != t && l != f) || !is_Const(r) || !is_Const_null(r))
- return 0;
+ return false;
+}
- if ((!is_Minus(t) || get_Minus_op(t) != f) &&
- (!is_Minus(f) || get_Minus_op(f) != t))
- return 0;
+static bool mux_is_set(ir_node *sel, ir_node *mux_true, ir_node *mux_false)
+{
+ ir_mode *mode = get_irn_mode(mux_true);
+ (void) sel;
- if (pnc & pn_Cmp_Gt) {
- /* x >= 0 ? -x : x is NABS */
- if (is_Minus(t))
- return 0;
- } else {
- /* x < 0 ? x : -x is NABS */
- if (is_Minus(f))
- return 0;
+ if (!mode_is_int(mode) && !mode_is_reference(mode)
+ && mode != mode_b)
+ return false;
+
+ if (is_Const(mux_true) && is_Const(mux_false)) {
+ /* we can create a set plus up two 3 instructions for any combination of constants */
+ return true;
}
- return 1;
+
+ return false;
}
+static bool mux_is_float_const_const(ir_node *sel, ir_node *mux_true,
+ ir_node *mux_false)
+{
+ (void) sel;
-/**
- * Allows or disallows the creation of Mux nodes for the given Phi nodes.
- *
- * @param sel A selector of a Cond.
- * @param phi_list List of Phi nodes about to be converted (linked via get_Phi_next() field)
- * @param i First data predecessor involved in if conversion
- * @param j Second data predecessor involved in if conversion
- *
- * @return 1 if allowed, 0 otherwise
- */
-static int ia32_is_mux_allowed(ir_node *sel, ir_node *phi_list, int i, int j)
+ if (!mode_is_float(get_irn_mode(mux_true)))
+ return false;
+
+ return is_Const(mux_true) && is_Const(mux_false);
+}
+
+static bool mux_is_doz(ir_node *sel, ir_node *mux_true, ir_node *mux_false)
{
- ir_node *phi;
ir_node *cmp;
- pn_Cmp pn;
- ir_node *cl, *cr;
-
- /* we can't handle Muxs with 64bit compares yet */
- if (is_Proj(sel)) {
- cmp = get_Proj_pred(sel);
- if (is_Cmp(cmp)) {
- ir_node *left = get_Cmp_left(cmp);
- ir_mode *cmp_mode = get_irn_mode(left);
- if (!mode_is_float(cmp_mode) && get_mode_size_bits(cmp_mode) > 32) {
- /* 64bit Abs IS supported */
- for (phi = phi_list; phi; phi = get_Phi_next(phi)) {
- ir_node *t = get_Phi_pred(phi, i);
- ir_node *f = get_Phi_pred(phi, j);
-
- if (! psi_is_Abs(cmp, sel, t, f))
- return 0;
- }
- return 1;
- }
- } else {
- /* we do not support nodes without Cmp yet */
- return 0;
- }
- } else {
- /* we do not support nodes without Cmp yet */
- return 0;
+ ir_node *cmp_left;
+ ir_node *cmp_right;
+ ir_mode *mode;
+ long pn;
+
+ if (!is_Proj(sel))
+ return false;
+
+ cmp = get_Proj_pred(sel);
+ if (!is_Cmp(cmp))
+ return false;
+
+ mode = get_irn_mode(mux_true);
+ if (mode_is_signed(mode) || mode_is_float(mode))
+ return false;
+
+ pn = get_Proj_proj(sel);
+ cmp_left = get_Cmp_left(cmp);
+ cmp_right = get_Cmp_right(cmp);
+ if ((pn & pn_Cmp_Gt) &&
+ is_Const(mux_false) && is_Const_null(mux_false) && is_Sub(mux_true) &&
+ get_Sub_left(mux_true) == cmp_left &&
+ get_Sub_right(mux_true) == cmp_right) {
+ /* Mux(a >=u b, a - b, 0) unsigned Doz */
+ return true;
+ }
+ if ((pn & pn_Cmp_Lt) &&
+ is_Const(mux_true) && is_Const_null(mux_true) && is_Sub(mux_false) &&
+ get_Sub_left(mux_false) == cmp_left &&
+ get_Sub_right(mux_false) == cmp_right) {
+ /* Mux(a <=u b, 0, a - b) unsigned Doz */
+ return true;
}
- pn = get_Proj_proj(sel);
- cl = get_Cmp_left(cmp);
- cr = get_Cmp_right(cmp);
-
- if (ia32_cg_config.use_cmov) {
- if (ia32_cg_config.use_sse2) {
- /* check the Phi nodes: no 64bit and no floating point cmov */
- for (phi = phi_list; phi; phi = get_Phi_next(phi)) {
- ir_mode *mode = get_irn_mode(phi);
-
- if (mode_is_float(mode)) {
- /* check for Min, Max */
- ir_node *t = get_Phi_pred(phi, i);
- ir_node *f = get_Phi_pred(phi, j);
-
- /* SSE2 supports Min & Max */
- if (pn == pn_Cmp_Lt || pn == pn_Cmp_Le || pn == pn_Cmp_Ge || pn == pn_Cmp_Gt) {
- if (cl == t && cr == f) {
- /* Mux(a <=/>= b, a, b) => MIN, MAX */
- continue;
- } else if (cl == f && cr == t) {
- /* Mux(a <=/>= b, b, a) => MAX, MIN */
- continue;
- }
- }
- return 0;
- } else if (get_mode_size_bits(mode) > 32) {
- /* no 64bit cmov */
- return 0;
- }
- }
- } else {
- /* check the Phi nodes: no 64bit and no floating point cmov */
- for (phi = phi_list; phi; phi = get_Phi_next(phi)) {
- ir_mode *mode = get_irn_mode(phi);
-
- if (mode_is_float(mode)) {
- ir_node *t = get_Phi_pred(phi, i);
- ir_node *f = get_Phi_pred(phi, j);
-
- /* always support Mux(!float, C1, C2) */
- if (is_Const(t) && is_Const(f) && !mode_is_float(get_irn_mode(cl))) {
- switch (be_transformer) {
- case TRANSFORMER_DEFAULT:
- /* always support Mux(!float, C1, C2) */
- continue;
-#ifdef FIRM_GRGEN_BE
- case TRANSFORMER_PBQP:
- case TRANSFORMER_RAND:
- /* no support for Mux(*, C1, C2) */
- return 0;
-#endif
- default:
- panic("invalid transformer");
- }
- }
- /* only abs or nabs supported */
- if (! psi_is_Abs_or_Nabs(cmp, sel, t, f))
- return 0;
- } else if (get_mode_size_bits(mode) > 32)
- return 0;
- }
- }
+ return false;
+}
- return 1;
- } else { /* No Cmov, only some special cases */
-
- /* Now some supported cases here */
- for (phi = phi_list; phi; phi = get_Phi_next(phi)) {
- ir_mode *mode = get_irn_mode(phi);
- ir_node *t, *f;
-
- t = get_Phi_pred(phi, i);
- f = get_Phi_pred(phi, j);
-
- if (mode_is_float(mode)) {
- /* always support Mux(!float, C1, C2) */
- if (is_Const(t) && is_Const(f) &&
- !mode_is_float(get_irn_mode(cl))) {
- switch (be_transformer) {
- case TRANSFORMER_DEFAULT:
- /* always support Mux(!float, C1, C2) */
- continue;
+static int ia32_is_mux_allowed(ir_node *sel, ir_node *mux_false,
+ ir_node *mux_true)
+{
+ ir_mode *mode;
+
+ /* we can handle Abs for all modes and compares */
+ if (mux_is_abs(sel, mux_true, mux_false))
+ return true;
+ /* we can handle Set for all modes and compares */
+ if (mux_is_set(sel, mux_true, mux_false))
+ return true;
+ /* SSE has own min/max operations */
+ if (ia32_cg_config.use_sse2
+ && mux_is_float_min_max(sel, mux_true, mux_false))
+ return true;
+ /* we can handle Mux(?, Const[f], Const[f]) */
+ if (mux_is_float_const_const(sel, mux_true, mux_false)) {
#ifdef FIRM_GRGEN_BE
- case TRANSFORMER_PBQP:
- case TRANSFORMER_RAND:
- /* no support for Mux(*, C1, C2) */
- return 0;
+ /* well, some code selectors can't handle it */
+ if (be_transformer != TRANSFORMER_PBQP
+ || be_transformer != TRANSFORMER_RAND)
+ return true;
+#else
+ return true;
#endif
- default:
- panic("invalid transformer");
- }
- }
- /* only abs or nabs supported */
- if (! psi_is_Abs_or_Nabs(cmp, sel, t, f))
- return 0;
- } else if (get_mode_size_bits(mode) > 32) {
- /* no 64bit yet */
- return 0;
- }
+ }
- if (is_Const(t) && is_Const(f)) {
- if ((is_Const_null(t) && is_Const_one(f)) || (is_Const_one(t) && is_Const_null(f))) {
- /* always support Mux(x, C1, C2) */
- continue;
- }
- } else if (pn == pn_Cmp_Lt || pn == pn_Cmp_Le || pn == pn_Cmp_Ge || pn == pn_Cmp_Gt) {
-#if 0
- if (cl == t && cr == f) {
- /* Mux(a <=/>= b, a, b) => Min, Max */
- continue;
- }
- if (cl == f && cr == t) {
- /* Mux(a <=/>= b, b, a) => Max, Min */
- continue;
- }
-#endif
- if ((pn & pn_Cmp_Gt) && !mode_is_signed(mode) &&
- is_Const(f) && is_Const_null(f) && is_Sub(t) &&
- get_Sub_left(t) == cl && get_Sub_right(t) == cr) {
- /* Mux(a >=u b, a - b, 0) unsigned Doz */
- continue;
- }
- if ((pn & pn_Cmp_Lt) && !mode_is_signed(mode) &&
- is_Const(t) && is_Const_null(t) && is_Sub(f) &&
- get_Sub_left(f) == cl && get_Sub_right(f) == cr) {
- /* Mux(a <=u b, 0, a - b) unsigned Doz */
- continue;
- }
- if (is_Const(cr) && is_Const_null(cr)) {
- if (cl == t && is_Minus(f) && get_Minus_op(f) == cl) {
- /* Mux(a <=/>= 0 ? a : -a) Nabs/Abs */
- continue;
- } else if (cl == f && is_Minus(t) && get_Minus_op(t) == cl) {
- /* Mux(a <=/>= 0 ? -a : a) Abs/Nabs */
- continue;
- }
- }
- }
- return 0;
+ /* no support for 64bit inputs to cmov */
+ mode = get_irn_mode(mux_true);
+ if (get_mode_size_bits(mode) > 32)
+ return false;
+ /* we can't handle MuxF yet */
+ if (mode_is_float(mode))
+ return false;
+
+ if (mux_is_doz(sel, mux_true, mux_false))
+ return true;
+
+ /* Check Cmp before the node */
+ if (is_Proj(sel)) {
+ ir_node *cmp = get_Proj_pred(sel);
+ if (is_Cmp(cmp)) {
+ ir_mode *cmp_mode = get_irn_mode(get_Cmp_left(cmp));
+
+ /* we can't handle 64bit compares */
+ if (get_mode_size_bits(cmp_mode) > 32)
+ return false;
+
+ /* we can't handle float compares */
+ if (mode_is_float(cmp_mode))
+ return false;
}
- /* all checks passed */
- return 1;
}
- return 0;
+
+ /* did we disable cmov generation? */
+ if (!ia32_cg_config.use_cmov)
+ return false;
+
+ /* we can use a cmov */
+ return true;
}
-static asm_constraint_flags_t ia32_parse_asm_constraint(const void *self, const char **c)
+static asm_constraint_flags_t ia32_parse_asm_constraint(const char **c)
{
- (void) self;
(void) c;
/* we already added all our simple flags to the flags modifier list in
return ASM_CONSTRAINT_FLAG_INVALID;
}
-static int ia32_is_valid_clobber(const void *self, const char *clobber)
+static int ia32_is_valid_clobber(const char *clobber)
{
- (void) self;
-
return ia32_get_clobber_register(clobber) != NULL;
}
/**
* Returns the libFirm configuration parameter for this backend.
*/
-static const backend_params *ia32_get_libfirm_params(void) {
+static const backend_params *ia32_get_libfirm_params(void)
+{
static const ir_settings_if_conv_t ifconv = {
4, /* maxdepth, doesn't matter for Mux-conversion */
ia32_is_mux_allowed /* allows or disallows Mux creation for given selector */
}
static const lc_opt_enum_int_items_t gas_items[] = {
- { "elf", GAS_FLAVOUR_ELF },
- { "mingw", GAS_FLAVOUR_MINGW },
- { "yasm", GAS_FLAVOUR_YASM },
- { "macho", GAS_FLAVOUR_MACH_O },
- { NULL, 0 }
+ { "elf", OBJECT_FILE_FORMAT_ELF },
+ { "mingw", OBJECT_FILE_FORMAT_COFF },
+ { "macho", OBJECT_FILE_FORMAT_MACH_O },
+ { NULL, 0 }
};
static lc_opt_enum_int_var_t gas_var = {
- (int*) &be_gas_flavour, gas_items
+ (int*) &be_gas_object_file_format, gas_items
};
#ifdef FIRM_GRGEN_BE
projects / libfirm / blobdiff