* @file
* @brief The main arm backend driver file.
* @author Matthias Braun, Oliver Richter, Tobias Gneist
- * @version $Id$
*/
#include "config.h"
#include "irgopt.h"
#include "iroptimize.h"
#include "irdump.h"
-#include "lowering.h"
+#include "lower_calls.h"
#include "error.h"
#include "bitset.h"
#include "array_t.h"
#include "irtools.h"
-#include "../bearch.h"
-#include "../benode.h"
-#include "../belower.h"
-#include "../besched.h"
+#include "bearch.h"
+#include "benode.h"
+#include "belower.h"
+#include "besched.h"
#include "be.h"
-#include "../bemachine.h"
-#include "../bemodule.h"
-#include "../beirg.h"
-#include "../bespillslots.h"
-#include "../begnuas.h"
-#include "../belistsched.h"
-#include "../beflags.h"
+#include "bemodule.h"
+#include "beirg.h"
+#include "bespillslots.h"
+#include "bespillutil.h"
+#include "begnuas.h"
+#include "belistsched.h"
+#include "beflags.h"
+#include "bestack.h"
#include "bearch_arm_t.h"
place_code(irg);
}
-/**
- * Called immediately before emit phase.
- */
-static void arm_finish_irg(ir_graph *irg)
+static void arm_collect_frame_entity_nodes(ir_node *node, void *data)
{
- /* do peephole optimizations and fix stack offsets */
- arm_peephole_optimization(irg);
+ be_fec_env_t *env = (be_fec_env_t*)data;
+ const ir_mode *mode;
+ int align;
+ ir_entity *entity;
+ const arm_load_store_attr_t *attr;
+
+ if (be_is_Reload(node) && be_get_frame_entity(node) == NULL) {
+ mode = get_irn_mode(node);
+ align = get_mode_size_bytes(mode);
+ be_node_needs_frame_entity(env, node, mode, align);
+ return;
+ }
+
+ switch (get_arm_irn_opcode(node)) {
+ case iro_arm_Ldf:
+ case iro_arm_Ldr:
+ break;
+ default:
+ return;
+ }
+
+ attr = get_arm_load_store_attr_const(node);
+ entity = attr->entity;
+ mode = attr->load_store_mode;
+ align = get_mode_size_bytes(mode);
+ if (entity != NULL)
+ return;
+ if (!attr->is_frame_entity)
+ return;
+ be_node_needs_frame_entity(env, node, mode, align);
}
-static void arm_before_ra(ir_graph *irg)
+static void arm_set_frame_entity(ir_node *node, ir_entity *entity)
{
- be_sched_fix_flags(irg, &arm_reg_classes[CLASS_arm_flags], NULL, NULL);
+ if (is_be_node(node)) {
+ be_node_set_frame_entity(node, entity);
+ } else {
+ arm_load_store_attr_t *attr = get_arm_load_store_attr(node);
+ attr->entity = entity;
+ }
}
static void transform_Reload(ir_node *node)
}
}
-static void arm_collect_frame_entity_nodes(ir_node *node, void *data)
-{
- be_fec_env_t *env = (be_fec_env_t*)data;
- const ir_mode *mode;
- int align;
- ir_entity *entity;
- const arm_load_store_attr_t *attr;
-
- if (be_is_Reload(node) && be_get_frame_entity(node) == NULL) {
- mode = get_irn_mode(node);
- align = get_mode_size_bytes(mode);
- be_node_needs_frame_entity(env, node, mode, align);
- return;
- }
-
- switch (get_arm_irn_opcode(node)) {
- case iro_arm_Ldf:
- case iro_arm_Ldr:
- break;
- default:
- return;
- }
-
- attr = get_arm_load_store_attr_const(node);
- entity = attr->entity;
- mode = attr->load_store_mode;
- align = get_mode_size_bytes(mode);
- if (entity != NULL)
- return;
- if (!attr->is_frame_entity)
- return;
- be_node_needs_frame_entity(env, node, mode, align);
-}
-
-static void arm_set_frame_entity(ir_node *node, ir_entity *entity)
-{
- if (is_be_node(node)) {
- be_node_set_frame_entity(node, entity);
- } else {
- arm_load_store_attr_t *attr = get_arm_load_store_attr(node);
- attr->entity = entity;
- }
-}
-
-static void arm_after_ra(ir_graph *irg)
+/**
+ * Called immediately before emit phase.
+ */
+static void arm_finish_irg(ir_graph *irg)
{
be_stack_layout_t *stack_layout = be_get_irg_stack_layout(irg);
bool at_begin = stack_layout->sp_relative ? true : false;
be_free_frame_entity_coalescer(fec_env);
irg_block_walk_graph(irg, NULL, arm_after_ra_walker, NULL);
+
+ /* fix stack entity offsets */
+ be_abi_fix_stack_nodes(irg);
+ be_abi_fix_stack_bias(irg);
+
+ /* do peephole optimizations and fix stack offsets */
+ arm_peephole_optimization(irg);
+}
+
+static void arm_before_ra(ir_graph *irg)
+{
+ be_sched_fix_flags(irg, &arm_reg_classes[CLASS_arm_flags], NULL, NULL);
}
/**
/**
* Initializes the backend ISA and opens the output file.
*/
-static arch_env_t *arm_init(FILE *file_handle)
+static arch_env_t *arm_init(const be_main_env_t *env)
{
arm_isa_t *isa = XMALLOC(arm_isa_t);
*isa = arm_isa_template;
arm_register_init();
- be_emit_init(file_handle);
-
arm_create_opcodes(&arm_irn_ops);
arm_handle_intrinsics();
be_gas_emit_types = false;
+ be_emit_init(env->file_handle);
+ be_gas_begin_compilation_unit(env);
+
return &isa->base;
}
{
arm_isa_t *isa = (arm_isa_t*)self;
- be_gas_emit_decls(isa->base.main_env);
+ be_gas_end_compilation_unit(isa->base.main_env);
be_emit_exit();
free(self);
}
-/**
- * Get the register class which shall be used to store a value of a given mode.
- * @param self The this pointer.
- * @param mode The mode in question.
- * @return A register class which can hold values of the given mode.
- */
-static const arch_register_class_t *arm_get_reg_class_for_mode(const ir_mode *mode)
-{
- if (mode_is_float(mode))
- return &arm_reg_classes[CLASS_arm_fpa];
- else
- return &arm_reg_classes[CLASS_arm_gp];
-}
-
-/**
- * Returns the necessary byte alignment for storing a register of given class.
- */
-static int arm_get_reg_class_alignment(const arch_register_class_t *cls)
-{
- (void) cls;
- /* ARM is a 32 bit CPU, no need for other alignment */
- return 4;
-}
-
-/**
- * Return irp irgs in the desired order.
- */
-static ir_graph **arm_get_irg_list(const void *self, ir_graph ***irg_list)
-{
- (void) self;
- (void) irg_list;
- return NULL;
-}
-
/**
* Allows or disallows the creation of Psi nodes for the given Phi nodes.
* @return 1 if allowed, 0 otherwise
{
size_t i, n_irgs = get_irp_n_irgs();
- lower_params_t params = {
- 4, /* def_ptr_alignment */
- LF_COMPOUND_RETURN | LF_RETURN_HIDDEN, /* flags */
- ADD_HIDDEN_ALWAYS_IN_FRONT, /* hidden_params */
- NULL, /* find pointer type */
- NULL, /* ret_compound_in_regs */
- };
-
/* lower compound param handling */
- lower_calls_with_compounds(¶ms);
+ lower_calls_with_compounds(LF_RETURN_HIDDEN);
+
+ for (i = 0; i < n_irgs; ++i) {
+ ir_graph *irg = get_irp_irg(i);
+ lower_switch(irg, 4, 256, false);
+ }
for (i = 0; i < n_irgs; ++i) {
ir_graph *irg = get_irp_irg(i);
- lower_switch(irg, 4, 256, true);
+ /* Turn all small CopyBs into loads/stores and all bigger CopyBs into
+ * memcpy calls.
+ * TODO: These constants need arm-specific tuning. */
+ lower_CopyB(irg, 31, 32, false);
}
}
0, /* don't support inline assembler yet */
1, /* support Rotl nodes */
1, /* big endian */
+ 1, /* modulo shift efficient */
+ 0, /* non-modulo shift not efficient */
&ad, /* will be set later */
arm_is_mux_allowed, /* allow_ifconv function */
32, /* machine size */
NULL, /* float arithmetic mode (TODO) */
- 0, /* size of long double */
+ NULL, /* long long type */
+ NULL, /* unsigned long long type */
+ NULL, /* long double type */
0, /* no trampoline support: size 0 */
0, /* no trampoline support: align 0 */
NULL, /* no trampoline support: no trampoline builder */
arm_lower_for_target,
arm_done,
NULL, /* handle_intrinsics */
- arm_get_reg_class_for_mode,
NULL,
- arm_get_reg_class_alignment,
arm_get_libfirm_params,
- arm_get_irg_list,
NULL, /* mark remat */
arm_parse_asm_constraint,
arm_is_valid_clobber,
NULL, /* before_abi */
arm_prepare_graph,
arm_before_ra,
- arm_after_ra,
arm_finish_irg,
arm_gen_routine,
NULL, /* register_saved_by */
+ be_new_spill,
+ be_new_reload,
};
BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_arm)
projects / libfirm / blobdiff