X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fsparc%2Fbearch_sparc.c;h=e0851d6d309e9d93b0e09ad8073bc9ea487afdc9;hb=91f9fd8a65f0db8bcf956cfe54ac4cca394c45e8;hp=078fdfad779c6582e2c798cd56a2c33ef352c80b;hpb=3f1d2fb001738ccea94f601a71a21d6dbf8ad8a9;p=libfirm diff --git a/ir/be/sparc/bearch_sparc.c b/ir/be/sparc/bearch_sparc.c index 078fdfad7..e0851d6d3 100644 --- a/ir/be/sparc/bearch_sparc.c +++ b/ir/be/sparc/bearch_sparc.c @@ -73,12 +73,6 @@ DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;) -static arch_irn_class_t sparc_classify(const ir_node *node) -{ - (void) node; - return arch_irn_class_none; -} - static ir_entity *sparc_get_frame_entity(const ir_node *node) { if (is_sparc_FrameAddr(node)) { @@ -128,7 +122,6 @@ static int sparc_get_sp_bias(const ir_node *node) /* fill register allocator interface */ const arch_irn_ops_t sparc_irn_ops = { - sparc_classify, sparc_get_frame_entity, sparc_set_frame_offset, sparc_get_sp_bias, @@ -149,12 +142,24 @@ static void sparc_prepare_graph(ir_graph *irg) static bool sparc_modifies_flags(const ir_node *node) { - return arch_get_irn_flags(node) & sparc_arch_irn_flag_modifies_flags; + unsigned n_outs = arch_get_irn_n_outs(node); + for (unsigned o = 0; o < n_outs; ++o) { + const arch_register_req_t *req = arch_get_irn_register_req_out(node, o); + if (req->cls == &sparc_reg_classes[CLASS_sparc_flags_class]) + return true; + } + return false; } static bool sparc_modifies_fp_flags(const ir_node *node) { - return arch_get_irn_flags(node) & sparc_arch_irn_flag_modifies_fp_flags; + unsigned n_outs = arch_get_irn_n_outs(node); + for (unsigned o = 0; o < n_outs; ++o) { + const arch_register_req_t *req = arch_get_irn_register_req_out(node, o); + if (req->cls == &sparc_reg_classes[CLASS_sparc_fpflags_class]) + return true; + } + return false; } static void sparc_before_ra(ir_graph *irg) @@ -166,31 +171,25 @@ static void sparc_before_ra(ir_graph *irg) NULL, sparc_modifies_fp_flags); } -static void sparc_init_graph(ir_graph *irg) -{ - (void) irg; -} - extern const arch_isa_if_t sparc_isa_if; static sparc_isa_t sparc_isa_template = { { - &sparc_isa_if, /* isa interface implementation */ + &sparc_isa_if, /* isa interface implementation */ N_SPARC_REGISTERS, sparc_registers, N_SPARC_CLASSES, sparc_reg_classes, - &sparc_registers[REG_SP], /* stack pointer register */ - &sparc_registers[REG_FRAME_POINTER],/* base pointer register */ - &sparc_reg_classes[CLASS_sparc_gp], /* link pointer register class */ - 3, /* power of two stack alignment - for calls */ - NULL, /* main environment */ - 7, /* costs for a spill instruction */ - 5, /* costs for a reload instruction */ - true, /* custom abi handling */ + &sparc_registers[REG_SP], /* stack pointer register */ + &sparc_registers[REG_FRAME_POINTER], /* base pointer register */ + 3, /* power of two stack alignment + for calls */ + NULL, /* main environment */ + 7, /* costs for a spill instruction */ + 5, /* costs for a reload instruction */ + true, /* custom abi handling */ }, - NULL, /* constants */ - SPARC_FPU_ARCH_FPU, /* FPU architecture */ + NULL, /* constants */ + SPARC_FPU_ARCH_FPU, /* FPU architecture */ }; /** @@ -254,6 +253,71 @@ static void rewrite_unsigned_float_Conv(ir_node *node) } } +/** + * rewrite float->unsigned conversions. + * Sparc has no instruction for this so instead we do the following: + * + * if (x >= 2147483648.) { + * converted ^= (int)(x-2147483648.) ^ 0x80000000; + * } else { + * converted = (int)x; + * } + * return (unsigned)converted; + */ +static void rewrite_float_unsigned_Conv(ir_node *node) +{ + ir_graph *irg = get_irn_irg(node); + dbg_info *dbgi = get_irn_dbg_info(node); + ir_node *lower_block = get_nodes_block(node); + + part_block(node); + + { + ir_node *block = get_nodes_block(node); + ir_node *float_x = get_Conv_op(node); + ir_mode *mode_u = get_irn_mode(node); + ir_mode *mode_s = find_signed_mode(mode_u); + ir_mode *mode_f = get_irn_mode(float_x); + ir_tarval *limit = new_tarval_from_double(2147483648., mode_f); + ir_node *limitc = new_r_Const(irg, limit); + ir_node *cmp = new_rd_Cmp(dbgi, block, float_x, limitc, + ir_relation_greater_equal); + ir_node *cond = new_rd_Cond(dbgi, block, cmp); + ir_node *proj_true = new_r_Proj(cond, mode_X, pn_Cond_true); + ir_node *proj_false = new_r_Proj(cond, mode_X, pn_Cond_false); + ir_node *in_true[1] = { proj_true }; + ir_node *in_false[1] = { proj_false }; + ir_node *true_block = new_r_Block(irg, ARRAY_SIZE(in_true), in_true); + ir_node *false_block = new_r_Block(irg, ARRAY_SIZE(in_false),in_false); + ir_node *true_jmp = new_r_Jmp(true_block); + ir_node *false_jmp = new_r_Jmp(false_block); + + ir_tarval *correction = new_tarval_from_long(0x80000000l, mode_s); + ir_node *c_const = new_r_Const(irg, correction); + ir_node *sub = new_rd_Sub(dbgi, true_block, float_x, limitc, + mode_f); + ir_node *sub_conv = new_rd_Conv(dbgi, true_block, sub, mode_s); + ir_node *xorn = new_rd_Eor(dbgi, true_block, sub_conv, c_const, + mode_s); + + ir_node *converted = new_rd_Conv(dbgi, false_block, float_x,mode_s); + + ir_node *lower_in[2] = { true_jmp, false_jmp }; + ir_node *phi_in[2] = { xorn, converted }; + ir_node *phi; + ir_node *res_conv; + + set_irn_in(lower_block, ARRAY_SIZE(lower_in), lower_in); + phi = new_r_Phi(lower_block, ARRAY_SIZE(phi_in), phi_in, mode_s); + assert(get_Block_phis(lower_block) == NULL); + set_Block_phis(lower_block, phi); + set_Phi_next(phi, NULL); + + res_conv = new_rd_Conv(dbgi, lower_block, phi, mode_u); + exchange(node, res_conv); + } +} + static int sparc_rewrite_Conv(ir_node *node, void *ctx) { ir_mode *to_mode = get_irn_mode(node); @@ -262,11 +326,17 @@ static int sparc_rewrite_Conv(ir_node *node, void *ctx) (void) ctx; if (mode_is_float(to_mode) && mode_is_int(from_mode) - && get_mode_size_bits(from_mode) == 32 - && !mode_is_signed(from_mode)) { + && get_mode_size_bits(from_mode) == 32 + && !mode_is_signed(from_mode)) { rewrite_unsigned_float_Conv(node); return 1; } + if (mode_is_float(from_mode) && mode_is_int(to_mode) + && get_mode_size_bits(to_mode) <= 32 + && !mode_is_signed(to_mode)) { + rewrite_float_unsigned_Conv(node); + return 1; + } return 0; } @@ -347,10 +417,19 @@ static void sparc_handle_intrinsics(void) lower_intrinsics(records, n_records, /*part_block_used=*/ true); } -/** - * Initializes the backend ISA - */ -static arch_env_t *sparc_init(const be_main_env_t *env) +static void sparc_init(void) +{ + sparc_register_init(); + sparc_create_opcodes(&sparc_irn_ops); + sparc_cconv_init(); +} + +static void sparc_finish(void) +{ + sparc_free_opcodes(); +} + +static arch_env_t *sparc_begin_codegeneration(const be_main_env_t *env) { sparc_isa_t *isa = XMALLOC(sparc_isa_t); *isa = sparc_isa_template; @@ -360,11 +439,6 @@ static arch_env_t *sparc_init(const be_main_env_t *env) be_gas_object_file_format = OBJECT_FILE_FORMAT_ELF; be_gas_elf_variant = ELF_VARIANT_SPARC; - sparc_register_init(); - sparc_create_opcodes(&sparc_irn_ops); - sparc_handle_intrinsics(); - sparc_cconv_init(); - be_emit_init(env->file_handle); be_gas_begin_compilation_unit(env); @@ -374,7 +448,7 @@ static arch_env_t *sparc_init(const be_main_env_t *env) /** * Closes the output file and frees the ISA structure. */ -static void sparc_done(void *self) +static void sparc_end_codegeneration(void *self) { sparc_isa_t *isa = (sparc_isa_t*)self; @@ -388,6 +462,7 @@ static void sparc_done(void *self) static void sparc_lower_for_target(void) { + ir_mode *mode_gp = sparc_reg_classes[CLASS_sparc_gp].mode; size_t i, n_irgs = get_irp_n_irgs(); lower_calls_with_compounds(LF_RETURN_HIDDEN); @@ -409,8 +484,10 @@ static void sparc_lower_for_target(void) for (i = 0; i < n_irgs; ++i) { ir_graph *irg = get_irp_irg(i); ir_lower_mode_b(irg, mode_Iu); - lower_switch(irg, 4, 256, false); - lower_alloc(irg, SPARC_STACK_ALIGNMENT, false, SPARC_MIN_STACKSIZE); + lower_switch(irg, 4, 256, mode_gp); + /* TODO: Pass SPARC_MIN_STACKSIZE as addr_delta as soon as + * Alloc nodes are implemented more efficiently. */ + lower_alloc(irg, SPARC_STACK_ALIGNMENT, true, 0); } } @@ -464,16 +541,11 @@ static const backend_params *sparc_get_backend_params(void) p.type_long_long = type_long_long; p.type_unsigned_long_long = type_unsigned_long_long; - if (sparc_isa_template.fpu_arch == SPARC_FPU_ARCH_SOFTFLOAT) { - p.mode_float_arithmetic = NULL; - p.type_long_double = NULL; - } else { - ir_type *type_long_double = new_type_primitive(mode_Q); + ir_type *type_long_double = new_type_primitive(mode_Q); - set_type_alignment_bytes(type_long_double, 8); - set_type_size_bytes(type_long_double, 16); - p.type_long_double = type_long_double; - } + set_type_alignment_bytes(type_long_double, 8); + set_type_size_bytes(type_long_double, 16); + p.type_long_double = type_long_double; return &p; } @@ -549,25 +621,28 @@ static ir_node *sparc_new_reload(ir_node *value, ir_node *spill, const arch_isa_if_t sparc_isa_if = { sparc_init, - sparc_lower_for_target, - sparc_done, - NULL, /* handle intrinsics */ - NULL, + sparc_finish, sparc_get_backend_params, - NULL, /* mark remat */ + sparc_lower_for_target, sparc_parse_asm_constraint, sparc_is_valid_clobber, - sparc_init_graph, - NULL, /* get_pic_base */ - NULL, /* before_abi */ + sparc_begin_codegeneration, + sparc_end_codegeneration, + NULL, + NULL, /* get call abi */ + NULL, /* mark remat */ + NULL, /* get_pic_base */ + sparc_new_spill, + sparc_new_reload, + NULL, /* register_saved_by */ + + sparc_handle_intrinsics, + NULL, /* before_abi */ sparc_prepare_graph, sparc_before_ra, - sparc_finish, + sparc_finish_graph, sparc_emit_routine, - NULL, /* register_saved_by */ - sparc_new_spill, - sparc_new_reload }; BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_sparc)