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Macros | |
| #define | memory_address(MODE, RTX) memory_address_addr_space ((MODE), (RTX), ADDR_SPACE_GENERIC) |
Enumerations | |
| enum | save_level { SAVE_BLOCK , SAVE_FUNCTION , SAVE_NONLOCAL } |
Macro Definition Documentation
◆ memory_address
| #define memory_address | ( | MODE, | |
| RTX ) memory_address_addr_space ((MODE), (RTX), ADDR_SPACE_GENERIC) |
Like memory_address_addr_space, except assume the memory address points to the generic named address space.
Referenced by do_tablejump(), emit_call_1(), emit_library_call_value_1(), emit_push_insn(), expand_builtin_apply(), expand_builtin_return_addr(), expand_builtin_strub_leave(), expand_builtin_update_setjmp_buf(), expand_call(), get_memory_rtx(), prepare_call_address(), probe_stack_range(), push_block(), and store_one_arg().
Enumeration Type Documentation
◆ save_level
Function Documentation
◆ adjust_stack()
Remove some bytes from the stack. An rtx says how many.
Adjust the stack pointer by ADJUST (an rtx for a number of bytes). This pops when ADJUST is positive. ADJUST need not be constant.
References adjust_stack_1(), const0_rtx, ggc_alloc(), poly_int_rtx_p(), and stack_pointer_delta.
Referenced by anti_adjust_stack_and_probe(), do_pending_stack_adjust(), and emit_call_1().
◆ align_dynamic_address()
Return an rtx doing runtime alignment to REQUIRED_ALIGN on TARGET.
References expand_binop(), expand_divmod(), expand_mult(), gen_int_mode(), ggc_alloc(), NULL_RTX, and OPTAB_LIB_WIDEN.
Referenced by allocate_dynamic_stack_space(), assign_parm_setup_block(), and get_dynamic_stack_base().
◆ allocate_dynamic_stack_space()
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extern |
Allocate some space on the stack dynamically and return its address.
Return an rtx representing the address of an area of memory dynamically pushed on the stack. Any required stack pointer alignment is preserved. SIZE is an rtx representing the size of the area. SIZE_ALIGN is the alignment (in bits) that we know SIZE has. This parameter may be zero. If so, a proper value will be extracted from SIZE if it is constant, otherwise BITS_PER_UNIT will be assumed. REQUIRED_ALIGN is the alignment (in bits) required for the region of memory. MAX_SIZE is an upper bound for SIZE, if SIZE is not constant, or -1 if no such upper bound is known. If CANNOT_ACCUMULATE is set to TRUE, the caller guarantees that the stack space allocated by the generated code cannot be added with itself in the course of the execution of the function. It is always safe to pass FALSE here and the following criterion is sufficient in order to pass TRUE: every path in the CFG that starts at the allocation point and loops to it executes the associated deallocation code.
References align_dynamic_address(), anti_adjust_stack(), anti_adjust_stack_and_probe(), anti_adjust_stack_and_probe_stack_clash(), cfun, const0_rtx, CONST_INT_P, create_convert_operand_to(), create_fixed_operand(), crtl, current_function_dynamic_stack_size, current_function_has_unbounded_dynamic_stack_size, do_pending_stack_adjust(), emit_barrier(), emit_cmp_and_jump_insns(), emit_insn(), emit_jump(), emit_label(), emit_library_call_value(), emit_move_insn(), error(), expand_binop(), expand_insn(), find_reg_equal_equiv_note(), force_operand(), gcc_assert, gen_int_mode(), gen_label_rtx(), gen_reg_rtx(), GENERIC_STACK_CHECK, get_dynamic_stack_size(), get_last_insn(), get_stack_check_protect(), get_stack_dynamic_offset(), ggc_alloc(), init_one_libfunc(), INTVAL, LCT_NORMAL, MALLOC_ABI_ALIGNMENT, mark_reg_pointer(), NULL, NULL_RTX, OPTAB_LIB_WIDEN, OPTAB_WIDEN, plus_constant(), PREFERRED_STACK_BOUNDARY, probe_stack_range(), record_new_stack_level(), REG_P, rtx_equal_p(), SET_DEST, SET_SRC, single_set(), STACK_GROWS_DOWNWARD, stack_limit_rtx, stack_pointer_delta, stack_pointer_rtx, STATIC_BUILTIN_STACK_CHECK, suppress_reg_args_size, expand_operand::target, targetm, virtual_stack_dynamic_rtx, virtuals_instantiated, and XEXP.
Referenced by expand_builtin_alloca(), expand_builtin_apply(), expand_call(), and initialize_argument_information().
◆ anti_adjust_stack()
Add some bytes to the stack. An rtx says how many.
Adjust the stack pointer by minus ADJUST (an rtx for a number of bytes). This pushes when ADJUST is positive. ADJUST need not be constant.
References adjust_stack_1(), const0_rtx, ggc_alloc(), poly_int_rtx_p(), and stack_pointer_delta.
Referenced by allocate_dynamic_stack_space(), anti_adjust_stack_and_probe(), anti_adjust_stack_and_probe_stack_clash(), emit_call_1(), emit_library_call_value_1(), emit_push_insn(), expand_call(), push_block(), and store_one_arg().
◆ anti_adjust_stack_and_probe()
Add some bytes to the stack while probing it. An rtx says how many.
Adjust the stack pointer by minus SIZE (an rtx for a number of bytes) while probing it. This pushes when SIZE is positive. SIZE need not be constant. If ADJUST_BACK is true, adjust back the stack pointer by plus SIZE at the end.
References adjust_stack(), anti_adjust_stack(), const0_rtx, CONST_INT_P, convert_to_mode(), emit_cmp_and_jump_insns(), emit_jump(), emit_label(), emit_stack_probe(), force_operand(), GEN_INT, gen_int_mode(), gen_label_rtx(), GET_CODE, GET_MODE, ggc_alloc(), i, INTVAL, NULL_RTX, plus_constant(), PROBE_INTERVAL, simplify_gen_binary(), STACK_GROW_OP, and stack_pointer_rtx.
Referenced by allocate_dynamic_stack_space(), and expand_function_end().
◆ anti_adjust_stack_and_probe_stack_clash()
Add some bytes to the stack while probing it. An rtx says how many. Add additional probes to prevent stack clashing attacks.
Adjust the stack pointer by minus SIZE (an rtx for a number of bytes)
while probing it. This pushes when SIZE is positive. SIZE need not
be constant.
This is subtly different than anti_adjust_stack_and_probe to try and
prevent stack-clash attacks
1. It must assume no knowledge of the probing state, any allocation
must probe.
Consider the case of a 1 byte alloca in a loop. If the sum of the
allocations is large, then this could be used to jump the guard if
probes were not emitted.
2. It never skips probes, whereas anti_adjust_stack_and_probe will
skip the probe on the first PROBE_INTERVAL on the assumption it
was already done in the prologue and in previous allocations.
3. It only allocates and probes SIZE bytes, it does not need to
allocate/probe beyond that because this probing style does not
guarantee signal handling capability if the guard is hit.
References anti_adjust_stack(), compute_stack_clash_protection_loop_data(), CONST0_RTX, CONST_INT_P, convert_to_mode(), emit_cmp_and_jump_insns(), emit_insn(), emit_label(), emit_stack_clash_protection_probe_loop_end(), emit_stack_clash_protection_probe_loop_start(), emit_stack_probe(), gcc_assert, gen_blockage(), GEN_INT, gen_label_rtx(), gen_rtx_CONST_INT(), GET_MODE, GET_MODE_SIZE(), ggc_alloc(), i, INTVAL, NULL_RTX, plus_constant(), rotate_loop(), stack_pointer_rtx, targetm, and word_mode.
Referenced by allocate_dynamic_stack_space().
◆ compute_stack_clash_protection_loop_data()
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extern |
Support for building allocation/probing loops for stack-clash protection of dyamically allocated stack space.
Compute parameters for stack clash probing a dynamic stack allocation of SIZE bytes. We compute ROUNDED_SIZE, LAST_ADDR, RESIDUAL and PROBE_INTERVAL. Additionally we conditionally dump the type of probing that will be needed given the values computed.
References CONST0_RTX, CONST_INT_P, dump_file, force_operand(), GEN_INT, ggc_alloc(), INTVAL, NULL_RTX, simplify_gen_binary(), STACK_GROW_OP, and stack_pointer_rtx.
Referenced by anti_adjust_stack_and_probe_stack_clash().
◆ copy_addr_to_reg()
Like copy_to_reg but always make the reg Pmode.
Like copy_to_reg but always give the new register mode Pmode in case X is a constant.
References copy_to_mode_reg(), and ggc_alloc().
Referenced by emit_block_op_via_libcall(), expand_builtin_apply(), expand_builtin_apply_args_1(), expand_builtin_cexpi(), expand_builtin_eh_return(), expand_builtin_frame_address(), expand_call(), set_storage_via_libcall(), sjlj_emit_function_enter(), and try_store_by_multiple_pieces().
◆ copy_to_mode_reg()
Like copy_to_reg but always make the reg the specified mode MODE.
Like copy_to_reg but always give the new register mode MODE in case X is a constant.
References emit_move_insn(), force_operand(), gcc_assert, gen_reg_rtx(), general_operand(), GET_MODE, and ggc_alloc().
Referenced by asan_clear_shadow(), copy_addr_to_reg(), pieces_addr::decide_autoinc(), do_tablejump(), emit_block_op_via_libcall(), expand_divmod(), expand_expr_real_2(), expand_mult_const(), expand_sdiv_pow2(), expand_sjlj_dispatch_table(), maybe_legitimize_operand(), maybe_legitimize_operand_same_code(), precompute_register_parameters(), prepare_call_address(), prepare_operand(), push_block(), replace_read(), set_storage_via_libcall(), and try_store_by_multiple_pieces().
◆ copy_to_reg()
Copy given rtx to a new temp reg and return that.
Copy the value or contents of X to a new temp reg and return that reg.
References emit_move_insn(), force_operand(), gen_reg_rtx(), general_operand(), GET_MODE, and ggc_alloc().
Referenced by assign_parm_setup_block(), convert_mode_scalar(), default_internal_arg_pointer(), do_jump(), emit_group_move_into_temps(), emit_push_insn(), expand_atomic_compare_and_swap(), expand_builtin_apply_args_1(), expand_builtin_longjmp(), expand_builtin_nonlocal_goto(), expand_builtin_return_addr(), expand_builtin_setjmp_receiver(), expand_builtin_stack_address(), expand_builtin_strub_leave(), expand_call(), expand_copysign_absneg(), expand_expr_real_1(), extract_bit_field(), extract_integral_bit_field(), gen_lowpart_general(), gen_memset_value_from_prev(), instantiate_virtual_regs_in_insn(), memory_address_addr_space(), operand_subword_force(), prepare_cmp_insn(), store_bit_field(), and store_integral_bit_field().
◆ copy_to_suggested_reg()
Copy given rtx to given temp reg and return that.
Copy X to TARGET (if it's nonzero and a reg) or to a new temp reg and return that reg. MODE is the mode to use for X in case it is a constant.
References emit_move_insn(), gen_reg_rtx(), and REG_P.
◆ eliminate_constant_term()
If X is a sum, return a new sum like X but lacking any constant terms. Add all the removed constant terms into *CONSTPTR. X itself is not altered. The result != X if and only if it is not isomorphic to X.
References const0_rtx, CONST_INT_P, eliminate_constant_term(), GET_CODE, GET_MODE, ggc_alloc(), simplify_binary_operation(), and XEXP.
Referenced by eliminate_constant_term(), and memory_address_addr_space().
◆ emit_stack_clash_protection_probe_loop_end()
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Emit the end of a stack clash probing loop. This consists of just the jump back to LOOP_LAB and emitting END_LOOP after the loop.
References emit_cmp_and_jump_insns(), emit_jump(), emit_label(), ggc_alloc(), NULL_RTX, and stack_pointer_rtx.
Referenced by anti_adjust_stack_and_probe_stack_clash().
◆ emit_stack_clash_protection_probe_loop_start()
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extern |
Emit the start of an allocate/probe loop for stack clash protection. LOOP_LAB and END_LAB are returned for use when we emit the end of the loop. LAST addr is the value for SP which stops the loop.
References emit_cmp_and_jump_insns(), emit_label(), gen_label_rtx(), ggc_alloc(), NULL_RTX, and stack_pointer_rtx.
Referenced by anti_adjust_stack_and_probe_stack_clash().
◆ emit_stack_probe()
Emit one stack probe at ADDRESS, an address within the stack.
References const0_rtx, create_address_operand(), emit_insn(), emit_move_insn(), expand_insn(), gen_rtx_MEM(), ggc_alloc(), maybe_legitimize_operands(), MEM_VOLATILE_P, targetm, validize_mem(), and word_mode.
Referenced by anti_adjust_stack_and_probe(), anti_adjust_stack_and_probe_stack_clash(), and probe_stack_range().
◆ emit_stack_restore()
Restore the stack pointer from a save area of the specified level.
◆ emit_stack_save()
Save the stack pointer at the specified level.
◆ force_not_mem()
Return given rtx, copied into a new temp reg if it was in memory.
If X is a memory ref, copy its contents to a new temp reg and return that reg. Otherwise, return X.
References emit_move_insn(), gen_reg_rtx(), GET_MODE, ggc_alloc(), MEM_P, MEM_POINTER, and REG_POINTER.
Referenced by expand_assignment(), expand_return(), and prepare_call_address().
◆ force_reg()
Copy a value to a register if it isn't already a register. Args are mode (in case value is a constant) and the value.
Load X into a register if it is not already one. Use mode MODE for the register. X should be valid for mode MODE, but it may be a constant which is valid for all integer modes; that's why caller must specify MODE. The caller must not alter the value in the register we return, since we mark it as a "constant" register.
References CONST_INT_P, CONSTANT_P, ctz_hwi(), DECL_ALIGN, DECL_P, emit_move_insn(), force_operand(), gen_reg_rtx(), general_operand(), GET_CODE, get_last_insn(), ggc_alloc(), INTVAL, mark_reg_pointer(), MEM_P, MEM_POINTER, MIN, NULL_RTX, REG_P, rtx_equal_p(), SET_DEST, SET_SRC, set_unique_reg_note(), single_set(), SYMBOL_REF_DECL, and XEXP.
Referenced by asan_clear_shadow(), assign_parm_setup_block(), assign_parm_setup_stack(), avoid_expensive_constant(), break_out_memory_refs(), builtin_memset_gen_str(), compress_float_constant(), convert_extracted_bit_field(), convert_float_to_wider_int(), convert_mode_scalar(), convert_wider_int_to_float(), emit_cmp_and_jump_insns(), emit_conditional_move(), emit_group_load_1(), emit_group_load_into_temps(), emit_library_call_value_1(), expand_asm_stmt(), expand_binop(), expand_builtin_frob_return_addr(), expand_builtin_longjmp(), expand_builtin_memset_args(), expand_builtin_setjmp_setup(), expand_builtin_signbit(), expand_builtin_stack_address(), expand_builtin_strub_leave(), expand_builtin_strub_update(), expand_call(), expand_divmod(), expand_doubleword_clz_ctz_ffs(), expand_doubleword_mult(), expand_expr_real_1(), expand_expr_real_2(), expand_ifn_atomic_compare_exchange_into_call(), expand_movstr(), expand_mul_overflow(), expand_mult(), expand_mult_const(), expand_sdiv_pow2(), expand_shift_1(), expand_smod_pow2(), expand_vec_perm_1(), expand_vec_perm_const(), extract_bit_field_1(), extract_fixed_bit_field_1(), extract_low_bits(), force_operand(), force_reload_address(), gen_lowpart_general(), hwasan_frame_base(), instantiate_virtual_regs_in_insn(), lowpart_subreg_maybe_copy(), memory_address_addr_space(), offset_address(), operand_subword_force(), precompute_register_parameters(), prepare_call_address(), prepare_cmp_insn(), resolve_shift_zext(), sjlj_emit_dispatch_table(), store_bit_field_using_insv(), store_constructor(), store_fixed_bit_field_1(), store_split_bit_field(), try_store_by_multiple_pieces(), use_anchored_address(), and widen_operand().
◆ get_dynamic_stack_base()
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Returns the address of the dynamic stack space without allocating it.
Return an rtx representing the address of an area of memory already statically pushed onto the stack in the virtual stack vars area. (It is assumed that the area is allocated in the function prologue.) Any required stack pointer alignment is preserved. OFFSET is the offset of the area into the virtual stack vars area. REQUIRED_ALIGN is the alignment (in bits) required for the region of memory. BASE is the rtx of the base of this virtual stack vars area. The only time this is not `virtual_stack_vars_rtx` is when tagging pointers on the stack.
References align_dynamic_address(), crtl, emit_move_insn(), expand_binop(), gen_int_mode(), gen_reg_rtx(), ggc_alloc(), mark_reg_pointer(), NULL_RTX, offset, OPTAB_LIB_WIDEN, PREFERRED_STACK_BOUNDARY, and expand_operand::target.
Referenced by expand_stack_vars().
◆ get_dynamic_stack_size()
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Calculate the necessary size of a constant dynamic stack allocation from the size of the variable area.
Return an rtx through *PSIZE, representing the size of an area of memory to be dynamically pushed on the stack. *PSIZE is an rtx representing the size of the area. SIZE_ALIGN is the alignment (in bits) that we know SIZE has. This parameter may be zero. If so, a proper value will be extracted from SIZE if it is constant, otherwise BITS_PER_UNIT will be assumed. REQUIRED_ALIGN is the alignment (in bits) required for the region of memory. If PSTACK_USAGE_SIZE is not NULL it points to a value that is increased for the additional size returned.
References CONST_INT_P, convert_to_mode(), crtl, force_operand(), GET_MODE, ggc_alloc(), HOST_BITS_PER_INT, INTVAL, MAX_SUPPORTED_STACK_ALIGNMENT, NULL_RTX, plus_constant(), PREFERRED_STACK_BOUNDARY, REGNO_POINTER_ALIGN, round_push(), UINT_MAX, and VIRTUAL_STACK_DYNAMIC_REGNUM.
Referenced by allocate_dynamic_stack_space(), assign_parm_setup_block(), and expand_stack_vars().
◆ hard_function_value()
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Return an rtx that refers to the value returned by a function in its original home. This becomes invalid if any more code is emitted.
Return an rtx representing the register or memory location in which a scalar value of data type VALTYPE was returned by a function call to function FUNC. FUNC is a FUNCTION_DECL, FNTYPE a FUNCTION_TYPE node if the precise function is known, otherwise 0. OUTGOING is 1 if on a machine with register windows this function should return the register in which the function will put its result and 0 otherwise.
References arg_int_size_in_bytes(), FOR_EACH_MODE_IN_CLASS, GET_MODE, GET_MODE_SIZE(), ggc_alloc(), PUT_MODE(), REG_P, and targetm.
Referenced by aggregate_value_p(), emit_library_call_value_1(), expand_call(), expand_function_start(), and vectorizable_store().
◆ hard_libcall_value()
Return an rtx that refers to the value returned by a library call in its original home. This becomes invalid if any more code is emitted.
Return an rtx representing the register or memory location in which a scalar value of mode MODE was returned by a library call.
References expand_operand::mode, and targetm.
Referenced by emit_library_call_value_1(), and expand_unop().
◆ memory_address_addr_space()
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Convert arg to a valid memory address for specified machine mode that points to a specific named address space, by emitting insns to perform arithmetic if necessary.
Return something equivalent to X but valid as a memory address for something of mode MODE in the named address space AS. When X is not itself valid, this works by copying X or subexpressions of it into registers.
References break_out_memory_refs(), const0_rtx, CONST_INT_P, CONSTANT_ADDRESS_P, CONSTANT_P, convert_memory_address_addr_space(), copy_to_reg(), cse_not_expected, eliminate_constant_term(), force_operand(), force_reg(), gcc_assert, GET_CODE, GET_MODE, ggc_alloc(), mark_reg_pointer(), memory_address_addr_space_p(), NULL_RTX, REG_P, targetm, update_temp_slot_address(), XEXP, and y.
Referenced by change_address_1(), and expand_expr_real_1().
◆ probe_stack_range()
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Probe a range of stack addresses from FIRST to FIRST+SIZE, inclusive. FIRST is a constant and size is a Pmode RTX. These are offsets from the current stack pointer. STACK_GROWS_DOWNWARD says whether to add or subtract them from the stack pointer.
References const0_rtx, CONST_INT_P, convert_to_mode(), create_input_operand(), emit_cmp_and_jump_insns(), emit_insn(), emit_jump(), emit_label(), emit_library_call(), emit_move_insn(), emit_stack_probe(), expand_binop(), force_operand(), gcc_assert, gen_blockage(), gen_int_mode(), gen_label_rtx(), GET_MODE, ggc_alloc(), i, INTVAL, LCT_THROW, maybe_expand_insn(), memory_address, NULL_RTX, offset, OPTAB_WIDEN, plus_constant(), PROBE_INTERVAL, simplify_gen_binary(), stack_check_libfunc, STACK_GROW_OFF, STACK_GROW_OP, STACK_GROW_OPTAB, stack_pointer_rtx, and targetm.
Referenced by allocate_dynamic_stack_space(), and expand_function_end().
◆ promote_decl_mode()
| machine_mode promote_decl_mode | ( | const_tree | decl, |
| int * | punsignedp ) |
Return mode and signedness to use when object is promoted.
Use one of promote_mode or promote_function_mode to find the promoted mode of DECL. If PUNSIGNEDP is not NULL, store there the unsignedness of DECL after promotion.
References current_function_decl, DECL_BY_REFERENCE, DECL_MODE, ggc_alloc(), promote_function_mode(), promote_mode(), TREE_CODE, TREE_TYPE, and TYPE_UNSIGNED.
Referenced by expand_expr_real_1(), expand_function_start(), expand_one_register_var(), promote_ssa_mode(), and store_constructor().
◆ promote_function_mode()
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extern |
Return mode and signedness to use when an argument or result in the given mode is promoted.
Return the mode to use to pass or return a scalar of TYPE and MODE. PUNSIGNEDP points to the signedness of the type and may be adjusted to show what signedness to use on extension operations. FOR_RETURN is nonzero if the caller is promoting the return value of FNDECL, else it is for promoting args.
References ggc_alloc(), INTEGRAL_MODE_P, NULL_TREE, targetm, and TREE_CODE.
Referenced by assign_parm_find_data_types(), assign_parm_setup_reg(), emit_library_call_value_1(), expand_call(), expand_expr_real_1(), expand_function_end(), expand_value_return(), initialize_argument_information(), prepare_libcall_arg(), promote_decl_mode(), and setup_incoming_promotions().
◆ promote_mode()
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Return mode and signedness to use when an object in the given mode is promoted.
Return the mode to use to store a scalar of TYPE and MODE. PUNSIGNEDP points to the signedness of the type and may be adjusted to show what signedness to use on extension operations.
References ggc_alloc(), NULL_TREE, targetm, TREE_CODE, TREE_TYPE, and TYPE_ADDR_SPACE.
Referenced by assign_temp(), default_promote_function_mode(), default_promote_function_mode_always_promote(), expand_cond_expr_using_cmove(), precompute_arguments(), promote_decl_mode(), and promote_ssa_mode().
◆ promote_ssa_mode()
| machine_mode promote_ssa_mode | ( | const_tree | name, |
| int * | punsignedp ) |
Return mode and signedness to use when object is promoted.
Return the promoted mode for name. If it is a named SSA_NAME, it is the same as promote_decl_mode. Otherwise, it is the promoted mode of a temp decl of same type as the SSA_NAME, if we had created one.
References gcc_assert, ggc_alloc(), promote_decl_mode(), promote_mode(), SSA_NAME_VAR, TREE_CODE, TREE_TYPE, TYPE_MODE, and TYPE_UNSIGNED.
Referenced by assign_parm_setup_block(), expand_expr_real_1(), expand_function_start(), expand_one_ssa_partition(), get_temp_reg(), gimple_can_coalesce_p(), insert_value_copy_on_edge(), and set_rtl().
◆ record_new_stack_level()
Record a new stack level.
Record a new stack level for the current function. This should be called whenever we allocate or deallocate dynamic stack space.
References cfun, ggc_alloc(), global_options, UI_SJLJ, update_nonlocal_goto_save_area(), and update_sjlj_context().
Referenced by allocate_dynamic_stack_space(), expand_call(), and expand_stack_restore().
◆ update_nonlocal_goto_save_area()
Invoke emit_stack_save for the nonlocal_goto_save_area.
Invoke emit_stack_save on the nonlocal_goto_save_area for the current function. This should be called whenever we allocate or deallocate dynamic stack space.
References build4(), cfun, emit_stack_save(), expand_expr(), EXPAND_WRITE, ggc_alloc(), integer_one_node, NULL_RTX, NULL_TREE, SAVE_NONLOCAL, and TREE_TYPE.
Referenced by expand_function_start(), and record_new_stack_level().
◆ use_anchored_address()
If X is a memory reference to a member of an object block, try rewriting it to use an anchor instead. Return the new memory reference on success and the old one on failure.
References CONST_INT_P, cse_not_expected, force_reg(), GET_CODE, GET_MODE, get_section_anchor(), ggc_alloc(), INTVAL, MEM_P, NULL, offset, place_block_symbol(), plus_constant(), replace_equiv_address(), SYMBOL_REF_ANCHOR_P, SYMBOL_REF_BLOCK, SYMBOL_REF_BLOCK_OFFSET, SYMBOL_REF_HAS_BLOCK_INFO_P, SYMBOL_REF_TLS_MODEL, targetm, and XEXP.
Referenced by emit_move_insn(), emit_move_multi_word(), expand_expr_constant(), expand_expr_real_1(), and validize_mem().
◆ validize_mem()
Export function prototypes from explow.cc. Copyright (C) 2015-2024 Free Software Foundation, Inc. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>.
Return a memory reference like MEMREF, but which is known to have a valid address.
Convert a mem ref into one with a valid memory address. Pass through anything else unchanged.
References GET_MODE, MEM_ADDR_SPACE, MEM_P, memory_address_addr_space_p(), replace_equiv_address(), use_anchored_address(), and XEXP.
Referenced by assign_parm_adjust_entry_rtl(), assign_parm_setup_block(), assign_parm_setup_reg(), assign_parm_setup_stack(), compress_float_constant(), emit_library_call_value_1(), emit_move_insn(), emit_push_insn(), emit_stack_probe(), emit_stack_restore(), emit_stack_save(), expand_asm_stmt(), expand_builtin_setjmp_setup(), expand_constructor(), expand_expr_real_1(), get_arg_pointer_save_area(), get_builtin_sync_mem(), init_set_costs(), load_register_parameters(), move_block_to_reg(), and store_one_arg().
