/* Original C (for context): * __attribute__((noinline)) * int regs_int_params(int a, int b, int c, int d, int e, int f) { * // Keep all params in regs; avoid spilling to the stack. * // The compiler will usually keep a..f in the 6 integer-arg regs. * asm volatile("" :: "r"(a), "r"(b), "r"(c), "r"(d), "r"(e), "r"(f)); * return a + b + c + d + e + f; * } */ .file "regs_int_params.c" .text .globl regs_int_params # -- Begin function regs_int_params .p2align 4 .type regs_int_params,@function regs_int_params: # @regs_int_params .Lfunc_begin0: .file 0 "." "regs_int_params.c" md5 0xcf39432098ab893043cc8b4606354bd2 .loc 0 2 0 # regs_int_params.c:2:0 .cfi_startproc # %bb.0: # %entry #DEBUG_VALUE: regs_int_params:a <- $edi #DEBUG_VALUE: regs_int_params:b <- $esi #DEBUG_VALUE: regs_int_params:c <- $edx #DEBUG_VALUE: regs_int_params:d <- $ecx #DEBUG_VALUE: regs_int_params:e <- $r8d #DEBUG_VALUE: regs_int_params:f <- $r9d pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset %rbp, -16 movq %rsp, %rbp .cfi_def_cfa_register %rbp # kill: def $r9d killed $r9d def $r9 # kill: def $r8d killed $r8d def $r8 # kill: def $ecx killed $ecx def $rcx # kill: def $edx killed $edx def $rdx # kill: def $esi killed $esi def $rsi # kill: def $edi killed $edi def $rdi .Ltmp0: .loc 0 5 3 prologue_end # regs_int_params.c:5:3 #APP #NO_APP .loc 0 6 12 # regs_int_params.c:6:12 addl %edi, %esi .Ltmp1: #DEBUG_VALUE: regs_int_params:b <- [DW_OP_LLVM_entry_value 1] $esi .loc 0 6 16 is_stmt 0 # regs_int_params.c:6:16 leal (%rdx,%rcx), %eax .loc 0 6 20 # regs_int_params.c:6:20 addl %esi, %eax .loc 0 6 28 # regs_int_params.c:6:28 addl %r8d, %eax addl %r9d, %eax .loc 0 6 3 epilogue_begin # regs_int_params.c:6:3 popq %rbp .cfi_def_cfa %rsp, 8 retq .Ltmp2: .Lfunc_end0: .size regs_int_params, .Lfunc_end0-regs_int_params .cfi_endproc # -- End function .section .debug_loclists,"",@progbits .long .Ldebug_list_header_end0-.Ldebug_list_header_start0 # Length .Ldebug_list_header_start0: .short 5 # Version .byte 8 # Address size .byte 0 # Segment selector size .long 1 # Offset entry count .Lloclists_table_base0: .long .Ldebug_loc0-.Lloclists_table_base0 .Ldebug_loc0: .byte 4 # DW_LLE_offset_pair .uleb128 .Lfunc_begin0-.Lfunc_begin0 # starting offset .uleb128 .Ltmp1-.Lfunc_begin0 # ending offset .byte 1 # Loc expr size .byte 84 # super-register DW_OP_reg4 .byte 4 # DW_LLE_offset_pair .uleb128 .Ltmp1-.Lfunc_begin0 # starting offset .uleb128 .Lfunc_end0-.Lfunc_begin0 # ending offset .byte 4 # Loc expr size .byte 163 # DW_OP_entry_value .byte 1 # 1 .byte 84 # super-register DW_OP_reg4 .byte 159 # DW_OP_stack_value .byte 0 # DW_LLE_end_of_list .Ldebug_list_header_end0: .section .debug_abbrev,"",@progbits .byte 1 # Abbreviation Code .byte 17 # DW_TAG_compile_unit .byte 1 # DW_CHILDREN_yes .byte 37 # DW_AT_producer .byte 37 # DW_FORM_strx1 .byte 19 # DW_AT_language .byte 5 # DW_FORM_data2 .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 114 # DW_AT_str_offsets_base .byte 23 # DW_FORM_sec_offset .byte 16 # DW_AT_stmt_list .byte 23 # DW_FORM_sec_offset .byte 27 # DW_AT_comp_dir .byte 37 # DW_FORM_strx1 .byte 17 # DW_AT_low_pc .byte 27 # DW_FORM_addrx .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 115 # DW_AT_addr_base .byte 23 # DW_FORM_sec_offset .ascii "\214\001" # DW_AT_loclists_base .byte 23 # DW_FORM_sec_offset .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 2 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 1 # DW_CHILDREN_yes .byte 17 # DW_AT_low_pc .byte 27 # DW_FORM_addrx .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 64 # DW_AT_frame_base .byte 24 # DW_FORM_exprloc .byte 122 # DW_AT_call_all_calls .byte 25 # DW_FORM_flag_present .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 39 # DW_AT_prototyped .byte 25 # DW_FORM_flag_present .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 63 # DW_AT_external .byte 25 # DW_FORM_flag_present .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 3 # Abbreviation Code .byte 5 # DW_TAG_formal_parameter .byte 0 # DW_CHILDREN_no .byte 2 # DW_AT_location .byte 24 # DW_FORM_exprloc .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 4 # Abbreviation Code .byte 5 # DW_TAG_formal_parameter .byte 0 # DW_CHILDREN_no .byte 2 # DW_AT_location .byte 34 # DW_FORM_loclistx .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 5 # Abbreviation Code .byte 36 # DW_TAG_base_type .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 62 # DW_AT_encoding .byte 11 # DW_FORM_data1 .byte 11 # DW_AT_byte_size .byte 11 # DW_FORM_data1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 0 # EOM(3) .section .debug_info,"",@progbits .Lcu_begin0: .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit .Ldebug_info_start0: .short 5 # DWARF version number .byte 1 # DWARF Unit Type .byte 8 # Address Size (in bytes) .long .debug_abbrev # Offset Into Abbrev. Section .byte 1 # Abbrev [1] 0xc:0x6b DW_TAG_compile_unit .byte 0 # DW_AT_producer .short 29 # DW_AT_language .byte 1 # DW_AT_name .long .Lstr_offsets_base0 # DW_AT_str_offsets_base .long .Lline_table_start0 # DW_AT_stmt_list .byte 2 # DW_AT_comp_dir .byte 0 # DW_AT_low_pc .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc .long .Laddr_table_base0 # DW_AT_addr_base .long .Lloclists_table_base0 # DW_AT_loclists_base .byte 2 # Abbrev [2] 0x27:0x4b DW_TAG_subprogram .byte 0 # DW_AT_low_pc .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc .byte 1 # DW_AT_frame_base .byte 86 # DW_AT_call_all_calls .byte 3 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 2 # DW_AT_decl_line # DW_AT_prototyped .long 114 # DW_AT_type # DW_AT_external .byte 3 # Abbrev [3] 0x36:0xa DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 85 .byte 5 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .long 114 # DW_AT_type .byte 4 # Abbrev [4] 0x40:0x9 DW_TAG_formal_parameter .byte 0 # DW_AT_location .byte 6 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .long 114 # DW_AT_type .byte 3 # Abbrev [3] 0x49:0xa DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 81 .byte 7 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .long 114 # DW_AT_type .byte 3 # Abbrev [3] 0x53:0xa DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 82 .byte 8 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .long 114 # DW_AT_type .byte 3 # Abbrev [3] 0x5d:0xa DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 88 .byte 9 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .long 114 # DW_AT_type .byte 3 # Abbrev [3] 0x67:0xa DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 89 .byte 10 # DW_AT_name .byte 0 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .long 114 # DW_AT_type .byte 0 # End Of Children Mark .byte 5 # Abbrev [5] 0x72:0x4 DW_TAG_base_type .byte 4 # DW_AT_name .byte 5 # DW_AT_encoding .byte 4 # DW_AT_byte_size .byte 0 # End Of Children Mark .Ldebug_info_end0: .section .debug_str_offsets,"",@progbits .long 48 # Length of String Offsets Set .short 5 .short 0 .Lstr_offsets_base0: .section .debug_str,"MS",@progbits,1 .Linfo_string0: .asciz "clang version 22.0.0git (https://github.com/UltimateForce21/llvm-project.git 79c0a9e1e7da0f727c41d27c9c6ff8a28bb7d06f)" # string offset=0 .Linfo_string1: .asciz "regs_int_params.c" # string offset=119 .Linfo_string2: .asciz "." # string offset=137 .Linfo_string3: .asciz "regs_int_params" # string offset=139 .Linfo_string4: .asciz "int" # string offset=155 .Linfo_string5: .asciz "a" # string offset=159 .Linfo_string6: .asciz "b" # string offset=161 .Linfo_string7: .asciz "c" # string offset=163 .Linfo_string8: .asciz "d" # string offset=165 .Linfo_string9: .asciz "e" # string offset=167 .Linfo_string10: .asciz "f" # string offset=169 .section .debug_str_offsets,"",@progbits .long .Linfo_string0 .long .Linfo_string1 .long .Linfo_string2 .long .Linfo_string3 .long .Linfo_string4 .long .Linfo_string5 .long .Linfo_string6 .long .Linfo_string7 .long .Linfo_string8 .long .Linfo_string9 .long .Linfo_string10 .section .debug_addr,"",@progbits .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution .Ldebug_addr_start0: .short 5 # DWARF version number .byte 8 # Address size .byte 0 # Segment selector size .Laddr_table_base0: .quad .Lfunc_begin0 .Ldebug_addr_end0: .ident "clang version 22.0.0git (https://github.com/UltimateForce21/llvm-project.git 79c0a9e1e7da0f727c41d27c9c6ff8a28bb7d06f)" .section ".note.GNU-stack","",@progbits .addrsig .section .debug_line,"",@progbits .Lline_table_start0: