diff options
Diffstat (limited to 'gcc/config/i386/i386.c')
| -rw-r--r-- | gcc/config/i386/i386.c | 288 |
1 files changed, 271 insertions, 17 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index bc680c80df9..ea20c6b901c 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -49,6 +49,11 @@ Boston, MA 02111-1307, USA. */ #include "cgraph.h" #include "tree-gimple.h" +/* APPLE LOCAL begin pascal strings */ +#include "../../libcpp/internal.h" +extern struct cpp_reader* parse_in; +/* APPLE LOCAL end pascal strings */ + #ifndef CHECK_STACK_LIMIT #define CHECK_STACK_LIMIT (-1) #endif @@ -505,6 +510,34 @@ struct processor_costs nocona_cost = { const struct processor_costs *ix86_cost = &pentium_cost; +/* APPLE LOCAL begin Altivec */ +/* vector types */ +static GTY(()) tree unsigned_V16QI_type_node; +static GTY(()) tree unsigned_V4SI_type_node; +static GTY(()) tree unsigned_V8QI_type_node; +static GTY(()) tree unsigned_V8HI_type_node; +static GTY(()) tree unsigned_V4HI_type_node; +static GTY(()) tree unsigned_V2HI_type_node; +static GTY(()) tree unsigned_V2SI_type_node; +static GTY(()) tree unsigned_V2DI_type_node; +static GTY(()) tree unsigned_V1DI_type_node; + +static GTY(()) tree V16QI_type_node; +static GTY(()) tree V4SF_type_node; +static GTY(()) tree V4SI_type_node; +static GTY(()) tree V8QI_type_node; +static GTY(()) tree V8HI_type_node; +static GTY(()) tree V4HI_type_node; +static GTY(()) tree V2HI_type_node; +static GTY(()) tree V2SI_type_node; +static GTY(()) tree V2SF_type_node; +static GTY(()) tree V2DI_type_node; +static GTY(()) tree V2DF_type_node; +static GTY(()) tree V16SF_type_node; +static GTY(()) tree V1DI_type_node; +static GTY(()) tree V4DF_type_node; +/* APPLE LOCAL end Altivec */ + /* Processor feature/optimization bitmasks. */ #define m_386 (1<<PROCESSOR_I386) #define m_486 (1<<PROCESSOR_I486) @@ -919,6 +952,11 @@ static rtx ix86_struct_value_rtx (tree, int); static bool ix86_ms_bitfield_layout_p (tree); static tree ix86_handle_struct_attribute (tree *, tree, tree, int, bool *); static int extended_reg_mentioned_1 (rtx *, void *); +/* APPLE LOCAL begin why is this local? */ +#if TARGET_MACHO +static bool ix86_binds_local_p (tree); +#endif +/* APPLE LOCAL end why is this local? */ static bool ix86_rtx_costs (rtx, int, int, int *); static int min_insn_size (rtx); static tree ix86_md_asm_clobbers (tree clobbers); @@ -1030,6 +1068,13 @@ static void init_ext_80387_constants (void); #undef TARGET_MS_BITFIELD_LAYOUT_P #define TARGET_MS_BITFIELD_LAYOUT_P ix86_ms_bitfield_layout_p +/* APPLE LOCAL begin why is this local? */ +#if TARGET_MACHO +#undef TARGET_BINDS_LOCAL_P +#define TARGET_BINDS_LOCAL_P ix86_binds_local_p +#endif +/* APPLE LOCAL end why is this local? */ + #undef TARGET_ASM_OUTPUT_MI_THUNK #define TARGET_ASM_OUTPUT_MI_THUNK x86_output_mi_thunk #undef TARGET_ASM_CAN_OUTPUT_MI_THUNK @@ -1043,6 +1088,12 @@ static void init_ext_80387_constants (void); #undef TARGET_ADDRESS_COST #define TARGET_ADDRESS_COST ix86_address_cost +/* APPLE LOCAL begin SSE stack alignment */ +#ifndef BASIC_STACK_BOUNDARY +#define BASIC_STACK_BOUNDARY (32) +#endif +/* APPLE LOCAL end SSE stack alignment */ + #undef TARGET_FIXED_CONDITION_CODE_REGS #define TARGET_FIXED_CONDITION_CODE_REGS ix86_fixed_condition_code_regs #undef TARGET_CC_MODES_COMPATIBLE @@ -1203,6 +1254,12 @@ override_options (void) SUBTARGET_OVERRIDE_OPTIONS; #endif + /* APPLE LOCAL begin constant cfstrings */ +#ifdef SUBSUBTARGET_OVERRIDE_OPTIONS + SUBSUBTARGET_OVERRIDE_OPTIONS; +#endif + /* APPLE LOCAL end constant cfstrings */ + /* Set the default values for switches whose default depends on TARGET_64BIT in case they weren't overwritten by command line options. */ if (TARGET_64BIT) @@ -1426,9 +1483,11 @@ override_options (void) The default of 128 bits is for Pentium III's SSE __m128, but we don't want additional code to keep the stack aligned when optimizing for code size. */ + /* APPLE LOCAL begin SSE stack alignment */ ix86_preferred_stack_boundary = (optimize_size - ? TARGET_64BIT ? 128 : 32 + ? TARGET_64BIT ? 128 : BASIC_STACK_BOUNDARY : 128); + /* APPLE LOCAL end SSE stack alignment */ if (ix86_preferred_stack_boundary_string) { i = atoi (ix86_preferred_stack_boundary_string); @@ -1583,11 +1642,34 @@ override_options (void) so it won't slow down the compilation and make x87 code slower. */ if (!TARGET_SCHEDULE) flag_schedule_insns_after_reload = flag_schedule_insns = 0; + + /* APPLE LOCAL begin dynamic-no-pic */ +#if TARGET_MACHO + if (MACHO_DYNAMIC_NO_PIC_P) + { + if (flag_pic) + warning ("-mdynamic-no-pic overrides -fpic or -fPIC"); + flag_pic = 0; + } + else +#endif + if (flag_pic == 1) + { + /* Darwin doesn't support -fpic. */ + warning ("-fpic is not supported; -fPIC assumed"); + flag_pic = 2; + } + /* APPLE LOCAL end dynamic-no-pic */ } void optimization_options (int level, int size ATTRIBUTE_UNUSED) { + /* APPLE LOCAL begin disable strict aliasing; breaks too much existing code. */ +#if TARGET_MACHO + flag_strict_aliasing = 0; +#endif + /* APPLE LOCAL end disable strict aliasing; breaks too much existing code. */ /* For -O2 and beyond, turn off -fschedule-insns by default. It tends to make the problem with not enough registers even worse. */ #ifdef INSN_SCHEDULING @@ -1595,6 +1677,14 @@ optimization_options (int level, int size ATTRIBUTE_UNUSED) flag_schedule_insns = 0; #endif + /* APPLE LOCAL begin pragma fenv */ + /* Trapping math is not needed by many users, and is expensive. + C99 permits us to default it off and we do that. It is + turned on when <fenv.h> is included (see darwin_pragma_fenv + in darwin-c.c). */ + flag_trapping_math = 0; + /* APPLE LOCAL end pragma fenv */ + /* The default values of these switches depend on the TARGET_64BIT that is not known at this moment. Mark these values with 2 and let user the to override these. In case there is no command line option @@ -3877,7 +3967,8 @@ static int pic_labels_used; static void get_pc_thunk_name (char name[32], unsigned int regno) { - if (USE_HIDDEN_LINKONCE) + /* APPLE LOCAL deep branch prediction pic-base. */ + if (USE_HIDDEN_LINKONCE || TARGET_MACHO) sprintf (name, "__i686.get_pc_thunk.%s", reg_names[regno]); else ASM_GENERATE_INTERNAL_LABEL (name, "LPR", regno); @@ -3921,6 +4012,18 @@ ix86_file_end (void) fputc ('\n', asm_out_file); ASM_DECLARE_FUNCTION_NAME (asm_out_file, name, decl); } + /* APPLE LOCAL begin deep branch prediction pic-base */ + else if (TARGET_MACHO) + { + darwin_textcoal_nt_section (); + fputs (".weak_definition\t", asm_out_file); + assemble_name (asm_out_file, name); + fputs ("\n.private_extern\t", asm_out_file); + assemble_name (asm_out_file, name); + fputs ("\n", asm_out_file); + ASM_OUTPUT_LABEL (asm_out_file, name); + } + /* APPLE LOCAL end deep branch prediction pic-base */ else { text_section (); @@ -3976,12 +4079,24 @@ output_set_got (rtx dest) xops[2] = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (name)); xops[2] = gen_rtx_MEM (QImode, xops[2]); output_asm_insn ("call\t%X2", xops); + /* APPLE LOCAL begin deep branch prediction pic-base */ +#if TARGET_MACHO + /* Output the "canonical" label name ("Lxx$pb") here too. This + is what will be referred to by the Mach-O PIC subsystem. */ + if (cfun) + ASM_OUTPUT_LABEL (asm_out_file, machopic_function_base_name ()); +#endif + /* APPLE LOCAL end deep branch prediction pic-base */ } + /* APPLE LOCAL begin deep branch prediction pic-base */ +#if !TARGET_MACHO if (!flag_pic || TARGET_DEEP_BRANCH_PREDICTION) output_asm_insn ("add{l}\t{%1, %0|%0, %1}", xops); else if (!TARGET_MACHO) output_asm_insn ("add{l}\t{%1+[.-%a2], %0|%0, %a1+(.-%a2)}", xops); +#endif /* !TARGET_MACHO */ + /* APPLE LOCAL end deep branch prediction pic-base */ return ""; } @@ -4651,6 +4766,24 @@ ix86_output_function_epilogue (FILE *file ATTRIBUTE_UNUSED, { if (pic_offset_table_rtx) REGNO (pic_offset_table_rtx) = REAL_PIC_OFFSET_TABLE_REGNUM; + /* APPLE LOCAL begin */ +#if TARGET_MACHO + /* Mach-O doesn't support labels at the end of objects, so if + it looks like we might want one, insert a NOP. */ + { + rtx insn = get_last_insn (); + while (insn + && NOTE_P (insn) + && NOTE_LINE_NUMBER (insn) != NOTE_INSN_DELETED_LABEL) + insn = PREV_INSN (insn); + if (insn + && (LABEL_P (insn) + || (NOTE_P (insn) + && NOTE_LINE_NUMBER (insn) == NOTE_INSN_DELETED_LABEL))) + fputs ("\tnop\n", file); + } +#endif + /* APPLE LOCAL end */ } /* Extract the parts of an RTL expression that is a valid memory address @@ -4971,7 +5104,21 @@ legitimate_constant_p (rtx x) /* TLS symbols are never valid. */ if (tls_symbolic_operand (x, Pmode)) return false; + /* APPLE LOCAL begin dynamic-no-pic */ + if (TARGET_MACHO && TARGET_DYNAMIC_NO_PIC) + return machopic_symbol_defined_p (x); + break; + + case PLUS: + { + rtx left = XEXP (x, 0); + rtx right = XEXP (x, 1); + bool left_is_constant = legitimate_constant_p (left); + bool right_is_constant = legitimate_constant_p (right); + return left_is_constant && right_is_constant; + } break; + /* APPLE LOCAL end dynamic-no-pic */ default: break; @@ -5273,7 +5420,8 @@ legitimate_address_p (enum machine_mode mode, rtx addr, int strict) goto report_error; } - else if (flag_pic && (SYMBOLIC_CONST (disp) + /* APPLE LOCAL dynamic-no-pic */ + else if (MACHOPIC_INDIRECT && (SYMBOLIC_CONST (disp) #if TARGET_MACHO && !machopic_operand_p (disp) #endif @@ -5294,11 +5442,18 @@ legitimate_address_p (enum machine_mode mode, rtx addr, int strict) goto report_error; } } - else if (! legitimate_pic_address_disp_p (disp)) + /* APPLE LOCAL begin dynamic-no-pic */ + else if (flag_pic && ! legitimate_pic_address_disp_p (disp)) { reason = "displacement is an invalid pic construct"; goto report_error; } + else if (TARGET_DYNAMIC_NO_PIC && !legitimate_constant_p (disp)) + { + reason = "displacment must be referenced via non_lazy_pointer"; + goto report_error; + } + /* APPLE LOCAL end dynamic-no-pic */ /* This code used to verify that a symbolic pic displacement includes the pic_offset_table_rtx register. @@ -5721,6 +5876,10 @@ legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED, enum machine_mode mode) if (flag_pic && SYMBOLIC_CONST (x)) return legitimize_pic_address (x, 0); + /* APPLE LOCAL begin dynamic-no-pic */ + if (MACHO_DYNAMIC_NO_PIC_P && SYMBOLIC_CONST (x)) + return machopic_indirect_data_reference (x, 0); + /* APPLE LOCAL end dynamic-no-pic */ /* Canonicalize shifts by 0, 1, 2, 3 into multiply */ if (GET_CODE (x) == ASHIFT @@ -5891,7 +6050,19 @@ output_pic_addr_const (FILE *file, rtx x, int code) if (SYMBOL_REF_DECL (x)) mark_decl_referenced (SYMBOL_REF_DECL (x)); + /* APPLE LOCAL begin stubify optimized symbols */ +#if TARGET_MACHO + { + const char *name = XSTR (x, 0); + if (MACHOPIC_INDIRECT + && machopic_classify_symbol (x) == MACHOPIC_UNDEFINED_FUNCTION) + name = machopic_indirection_name (x, /*stub_p=*/true); + assemble_name (file, name); + } +#else assemble_name (file, XSTR (x, 0)); +#endif + /* APPLE LOCAL end stubify optimized symbols */ if (!TARGET_MACHO && code == 'P' && ! SYMBOL_REF_LOCAL_P (x)) fputs ("@PLT", file); break; @@ -6721,7 +6892,13 @@ print_operand (FILE *file, rtx x, int code) } if (GET_CODE (x) == CONST_INT) fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (x)); - else if (flag_pic) + /* APPLE LOCAL begin dynamic-no-pic */ + else if (flag_pic +#if TARGET_MACHO + || MACHOPIC_INDIRECT +#endif + ) + /* APPLE LOCAL end dynamic-no-pic */ output_pic_addr_const (file, x, code); else output_addr_const (file, x); @@ -7515,7 +7692,8 @@ void ix86_expand_move (enum machine_mode mode, rtx operands[]) { int strict = (reload_in_progress || reload_completed); - rtx op0, op1; + /* APPLE LOCAL dynamic-no-pic */ + rtx insn, op0, op1; enum tls_model model; op0 = operands[0]; @@ -7549,29 +7727,49 @@ ix86_expand_move (enum machine_mode mode, rtx operands[]) } } - if (flag_pic && mode == Pmode && symbolic_operand (op1, Pmode)) + /* APPLE LOCAL begin dynamic-no-pic */ + if (MACHOPIC_INDIRECT + && mode == Pmode && symbolic_operand (op1, Pmode)) + /* APPLE LOCAL end dynamic-no-pic */ { #if TARGET_MACHO - if (MACHOPIC_PURE) + /* APPLE LOCAL begin dynamic-no-pic */ + if (MACHOPIC_INDIRECT) { rtx temp = ((reload_in_progress || ((op0 && GET_CODE (op0) == REG) && mode == Pmode)) ? op0 : gen_reg_rtx (Pmode)); op1 = machopic_indirect_data_reference (op1, temp); - op1 = machopic_legitimize_pic_address (op1, mode, - temp == op1 ? 0 : temp); + if (MACHOPIC_PURE) + op1 = machopic_legitimize_pic_address (op1, mode, + temp == op1 ? 0 : temp); } - else if (MACHOPIC_INDIRECT) - op1 = machopic_indirect_data_reference (op1, 0); - if (op0 == op1) - return; -#else + if (op0 != op1 && GET_CODE (op0) != MEM) + { + insn = gen_rtx_SET (VOIDmode, op0, op1); + emit_insn (insn); + return; + } + if (GET_CODE (op0) == MEM) + op1 = force_reg (Pmode, op1); + else + { + rtx temp = op0; + if (GET_CODE (temp) != REG) + temp = gen_reg_rtx (Pmode); + temp = legitimize_pic_address (op1, temp); + if (temp == op0) + return; + op1 = temp; + } +#else /* TARGET_MACHO */ if (GET_CODE (op0) == MEM) op1 = force_reg (Pmode, op1); else op1 = legitimize_address (op1, op1, Pmode); #endif /* TARGET_MACHO */ + /* APPLE LOCAL end dynamic-no-pic */ } else { @@ -11699,7 +11897,8 @@ ix86_expand_call (rtx retval, rtx fnaddr, rtx callarg1, abort (); #if TARGET_MACHO - if (flag_pic && GET_CODE (XEXP (fnaddr, 0)) == SYMBOL_REF) + /* APPLE LOCAL dynamic-no-pic */ + if (MACHOPIC_INDIRECT && GET_CODE (XEXP (fnaddr, 0)) == SYMBOL_REF) fnaddr = machopic_indirect_call_target (fnaddr); #else /* Static functions and indirect calls don't need the pic register. */ @@ -13235,6 +13434,12 @@ ix86_init_builtins (void) { if (TARGET_MMX) ix86_init_mmx_sse_builtins (); + + /* APPLE LOCAL begin constant cfstrings */ +#ifdef SUBTARGET_INIT_BUILTINS + SUBTARGET_INIT_BUILTINS; +#endif + /* APPLE LOCAL end constant cfstrings */ } /* Set up all the MMX/SSE builtins. This is not called if TARGET_MMX @@ -15190,6 +15395,21 @@ ix86_memory_move_cost (enum machine_mode mode, enum reg_class class, int in) } } +/* APPLE LOCAL begin why is this local? */ +#if TARGET_MACHO +/* Cross-module name binding. Darwin does not support overriding + functions at dynamic-link time. */ + +static bool +ix86_binds_local_p (tree decl) +{ + /* APPLE LOCAL kext treat vtables as overridable */ + return default_binds_local_p_1 (decl, + flag_apple_kext && lang_hooks.vtable_p (decl)); +} +#endif +/* APPLE LOCAL end why is this local? */ + /* Compute a (partial) cost for rtx X. Return true if the complete cost has been computed, and false if subexpressions should be scanned. In either case, *TOTAL contains the cost result. */ @@ -15548,11 +15768,37 @@ machopic_output_stub (FILE *file, const char *symb, const char *stub) fprintf (file, "\tjmp dyld_stub_binding_helper\n"); - machopic_lazy_symbol_ptr_section (); + /* APPLE LOCAL begin deep branch prediction pic-base. */ + /* N.B. Keep the correspondence of these + 'symbol_ptr/symbol_ptr2/symbol_ptr3' sections consistent with the + old-pic/new-pic/non-pic stubs; altering this will break + compatibility with existing dylibs. */ + if (MACHOPIC_PURE) + { + /* PIC stubs. */ + if (TARGET_DEEP_BRANCH_PREDICTION) + machopic_lazy_symbol_ptr2_section (); /* PIC stub using "CALL get_pc_thunk". */ + else + machopic_lazy_symbol_ptr_section (); /* PIC stub using inline picbase: "CALL L42 ! L42: pop %ebx". */ + } + else + { + machopic_lazy_symbol_ptr3_section (); /* -mdynamic-no-pic stub. */ + } + /* APPLE LOCAL end deep branch prediction pic-base. */ fprintf (file, "%s:\n", lazy_ptr_name); fprintf (file, "\t.indirect_symbol %s\n", symbol_name); fprintf (file, "\t.long %s\n", binder_name); } + +/* APPLE LOCAL begin deep branch prediction pic-base */ +void +darwin_x86_file_end (void) +{ + darwin_file_end (); + ix86_file_end (); +} +/* APPLE LOCAL end deep branch prediction pic-base */ #endif /* TARGET_MACHO */ /* Order the registers for register allocator. */ @@ -15873,6 +16119,14 @@ x86_field_alignment (tree field, int computed) if (TARGET_64BIT || TARGET_ALIGN_DOUBLE) return computed; + /* APPLE LOCAL begin mac68k alignment */ + if (TARGET_ALIGN_MAC68K) + { + if (computed >= 128) + return computed; + return MIN (computed, 16); + } + /* APPLE LOCAL end mac68k alignment */ mode = TYPE_MODE (TREE_CODE (type) == ARRAY_TYPE ? get_inner_array_type (type) : type); if (mode == DFmode || mode == DCmode |