# clang++ main.cpp -O1 -g2 -gdwarf-4 -emit-llvm -c -o mainLL.o # clang++ helper1.cpp -O1 -g2 -gdwarf-4 -emit-llvm -c -o helper1LL.o # llvm-link mainLL.o helper1LL.o -S -o linked.ll # clang++ -O1 linked.ll -g2 -gdwarf-4 -S -o combinedTest.s # main.cpp # struct Foo { # int x; # int y; # }; # inline __attribute__((always_inline)) # static int helper(Foo &f) { # return f.x + 3; # } # int main(int argc, char *argv[]) { # Foo foo; # foo.x = argc; # foo.y = 3; # return helper(foo) + foo.x + foo.y; # } # helper1.cpp # struct Foo2 { # int x; # int y; # }; # inline __attribute__((always_inline)) # static int helper(Foo2 &f) { # return f.x + 3; # } # int foo2(int i) { # Foo2 foo; # foo.x = i; # foo.y = 3; # return helper(foo); # } .text .file "llvm-link" .globl main # -- Begin function main .p2align 4, 0x90 .type main,@function main: # @main .Lfunc_begin0: .cfi_startproc # %bb.0: # %entry #DEBUG_VALUE: main:argc <- $edi #DEBUG_VALUE: main:argv <- $rsi #DEBUG_VALUE: main:foo <- [DW_OP_LLVM_fragment 0 32] $edi # kill: def $edi killed $edi def $rdi #DEBUG_VALUE: main:foo <- [DW_OP_LLVM_fragment 32 32] 3 .file 1 "/dwarf4CrossCULocList" "main.cpp" .loc 1 13 30 prologue_end # main.cpp:13:30 leal 6(,%rdi,2), %eax .loc 1 13 3 is_stmt 0 # main.cpp:13:3 retq .Ltmp0: .Lfunc_end0: .size main, .Lfunc_end0-main .cfi_endproc # -- End function .globl _Z4foo2i # -- Begin function _Z4foo2i .p2align 4, 0x90 .type _Z4foo2i,@function _Z4foo2i: # @_Z4foo2i .Lfunc_begin1: .cfi_startproc # %bb.0: # %entry #DEBUG_VALUE: foo2:i <- $edi #DEBUG_VALUE: foo2:foo <- [DW_OP_LLVM_fragment 0 32] $edi # kill: def $edi killed $edi def $rdi #DEBUG_VALUE: foo2:foo <- [DW_OP_LLVM_fragment 32 32] 3 .file 2 "/dwarf4CrossCULocList" "helper1.cpp" .loc 2 7 14 prologue_end is_stmt 1 # helper1.cpp:7:14 leal 3(%rdi), %eax .Ltmp1: .loc 2 13 3 # helper1.cpp:13:3 retq .Ltmp2: .Lfunc_end1: .size _Z4foo2i, .Lfunc_end1-_Z4foo2i .cfi_endproc # -- End function .section .debug_loc,"",@progbits .Ldebug_loc0: .quad .Lfunc_begin0-.Lfunc_begin0 .quad .Lfunc_end0-.Lfunc_begin0 .short 7 # Loc expr size .byte 85 # super-register DW_OP_reg5 .byte 147 # DW_OP_piece .byte 4 # 4 .byte 51 # DW_OP_lit3 .byte 159 # DW_OP_stack_value .byte 147 # DW_OP_piece .byte 4 # 4 .quad 0 .quad 0 .Ldebug_loc1: .quad .Lfunc_begin1-.Lfunc_begin1 .quad .Lfunc_end1-.Lfunc_begin1 .short 7 # Loc expr size .byte 85 # super-register DW_OP_reg5 .byte 147 # DW_OP_piece .byte 4 # 4 .byte 51 # DW_OP_lit3 .byte 159 # DW_OP_stack_value .byte 147 # DW_OP_piece .byte 4 # 4 .quad 0 .quad 0 .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 14 # DW_FORM_strp .byte 19 # DW_AT_language .byte 5 # DW_FORM_data2 .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 16 # DW_AT_stmt_list .byte 23 # DW_FORM_sec_offset .byte 27 # DW_AT_comp_dir .byte 14 # DW_FORM_strp .byte 17 # DW_AT_low_pc .byte 1 # DW_FORM_addr .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .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 1 # DW_FORM_addr .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 64 # DW_AT_frame_base .byte 24 # DW_FORM_exprloc .ascii "\227B" # DW_AT_GNU_all_call_sites .byte 25 # DW_FORM_flag_present .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .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 16 # DW_FORM_ref_addr .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 14 # DW_FORM_strp .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 16 # DW_FORM_ref_addr .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 24 # DW_FORM_exprloc .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .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 52 # DW_TAG_variable .byte 0 # DW_CHILDREN_no .byte 2 # DW_AT_location .byte 23 # DW_FORM_sec_offset .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .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 6 # Abbreviation Code .byte 15 # DW_TAG_pointer_type .byte 0 # DW_CHILDREN_no .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 7 # Abbreviation Code .byte 36 # DW_TAG_base_type .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .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 8 # Abbreviation Code .byte 19 # DW_TAG_structure_type .byte 1 # DW_CHILDREN_yes .byte 54 # DW_AT_calling_convention .byte 11 # DW_FORM_data1 .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 11 # DW_AT_byte_size .byte 11 # DW_FORM_data1 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 9 # Abbreviation Code .byte 13 # DW_TAG_member .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 73 # DW_AT_type .byte 16 # DW_FORM_ref_addr .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 56 # DW_AT_data_member_location .byte 11 # DW_FORM_data1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 10 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 1 # DW_CHILDREN_yes .byte 110 # DW_AT_linkage_name .byte 14 # DW_FORM_strp .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .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 32 # DW_AT_inline .byte 11 # DW_FORM_data1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 11 # Abbreviation Code .byte 5 # DW_TAG_formal_parameter .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .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 12 # Abbreviation Code .byte 16 # DW_TAG_reference_type .byte 0 # DW_CHILDREN_no .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 13 # Abbreviation Code .byte 13 # DW_TAG_member .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .byte 73 # DW_AT_type .byte 19 # DW_FORM_ref4 .byte 58 # DW_AT_decl_file .byte 11 # DW_FORM_data1 .byte 59 # DW_AT_decl_line .byte 11 # DW_FORM_data1 .byte 56 # DW_AT_data_member_location .byte 11 # DW_FORM_data1 .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 14 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 1 # DW_CHILDREN_yes .byte 17 # DW_AT_low_pc .byte 1 # DW_FORM_addr .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 64 # DW_AT_frame_base .byte 24 # DW_FORM_exprloc .ascii "\227B" # DW_AT_GNU_all_call_sites .byte 25 # DW_FORM_flag_present .byte 110 # DW_AT_linkage_name .byte 14 # DW_FORM_strp .byte 3 # DW_AT_name .byte 14 # DW_FORM_strp .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 63 # DW_AT_external .byte 25 # DW_FORM_flag_present .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 15 # Abbreviation Code .byte 29 # DW_TAG_inlined_subroutine .byte 0 # DW_CHILDREN_no .byte 49 # DW_AT_abstract_origin .byte 19 # DW_FORM_ref4 .byte 17 # DW_AT_low_pc .byte 1 # DW_FORM_addr .byte 18 # DW_AT_high_pc .byte 6 # DW_FORM_data4 .byte 88 # DW_AT_call_file .byte 11 # DW_FORM_data1 .byte 89 # DW_AT_call_line .byte 11 # DW_FORM_data1 .byte 87 # DW_AT_call_column .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 4 # DWARF version number .long .debug_abbrev # Offset Into Abbrev. Section .byte 8 # Address Size (in bytes) .byte 1 # Abbrev [1] 0xb:0x96 DW_TAG_compile_unit .long .Linfo_string0 # DW_AT_producer .short 33 # DW_AT_language .long .Linfo_string1 # DW_AT_name .long .Lline_table_start0 # DW_AT_stmt_list .long .Linfo_string2 # DW_AT_comp_dir .quad .Lfunc_begin0 # DW_AT_low_pc .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc .byte 2 # Abbrev [2] 0x2a:0x43 DW_TAG_subprogram .quad .Lfunc_begin0 # DW_AT_low_pc .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc .byte 1 # DW_AT_frame_base .byte 87 # DW_AT_GNU_all_call_sites .long .Linfo_string11 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long .debug_info+231 # DW_AT_type # DW_AT_external .byte 3 # Abbrev [3] 0x43:0xd DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 85 .long .Linfo_string14 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long .debug_info+231 # DW_AT_type .byte 4 # Abbrev [4] 0x50:0xd DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 84 .long .Linfo_string15 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long 109 # DW_AT_type .byte 5 # Abbrev [5] 0x5d:0xf DW_TAG_variable .long .Ldebug_loc0 # DW_AT_location .long .Linfo_string17 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 10 # DW_AT_decl_line .long 126 # DW_AT_type .byte 0 # End Of Children Mark .byte 6 # Abbrev [6] 0x6d:0x5 DW_TAG_pointer_type .long 114 # DW_AT_type .byte 6 # Abbrev [6] 0x72:0x5 DW_TAG_pointer_type .long 119 # DW_AT_type .byte 7 # Abbrev [7] 0x77:0x7 DW_TAG_base_type .long .Linfo_string16 # DW_AT_name .byte 6 # DW_AT_encoding .byte 1 # DW_AT_byte_size .byte 8 # Abbrev [8] 0x7e:0x22 DW_TAG_structure_type .byte 5 # DW_AT_calling_convention .long .Linfo_string18 # DW_AT_name .byte 8 # DW_AT_byte_size .byte 1 # DW_AT_decl_file .byte 1 # DW_AT_decl_line .byte 9 # Abbrev [9] 0x87:0xc DW_TAG_member .long .Linfo_string8 # DW_AT_name .long .debug_info+231 # DW_AT_type .byte 1 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .byte 0 # DW_AT_data_member_location .byte 9 # Abbrev [9] 0x93:0xc DW_TAG_member .long .Linfo_string9 # DW_AT_name .long .debug_info+231 # DW_AT_type .byte 1 # DW_AT_decl_file .byte 3 # DW_AT_decl_line .byte 4 # DW_AT_data_member_location .byte 0 # End Of Children Mark .byte 0 # End Of Children Mark .Ldebug_info_end0: .Lcu_begin1: .long .Ldebug_info_end1-.Ldebug_info_start1 # Length of Unit .Ldebug_info_start1: .short 4 # DWARF version number .long .debug_abbrev # Offset Into Abbrev. Section .byte 8 # Address Size (in bytes) .byte 1 # Abbrev [1] 0xb:0xb8 DW_TAG_compile_unit .long .Linfo_string0 # DW_AT_producer .short 33 # DW_AT_language .long .Linfo_string3 # DW_AT_name .long .Lline_table_start0 # DW_AT_stmt_list .long .Linfo_string2 # DW_AT_comp_dir .quad .Lfunc_begin1 # DW_AT_low_pc .long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc .byte 10 # Abbrev [10] 0x2a:0x1c DW_TAG_subprogram .long .Linfo_string4 # DW_AT_linkage_name .long .Linfo_string5 # DW_AT_name .byte 2 # DW_AT_decl_file .byte 6 # DW_AT_decl_line .long 70 # DW_AT_type .byte 1 # DW_AT_inline .byte 11 # Abbrev [11] 0x3a:0xb DW_TAG_formal_parameter .long .Linfo_string7 # DW_AT_name .byte 2 # DW_AT_decl_file .byte 6 # DW_AT_decl_line .long 77 # DW_AT_type .byte 0 # End Of Children Mark .byte 7 # Abbrev [7] 0x46:0x7 DW_TAG_base_type .long .Linfo_string6 # DW_AT_name .byte 5 # DW_AT_encoding .byte 4 # DW_AT_byte_size .byte 12 # Abbrev [12] 0x4d:0x5 DW_TAG_reference_type .long 82 # DW_AT_type .byte 8 # Abbrev [8] 0x52:0x22 DW_TAG_structure_type .byte 5 # DW_AT_calling_convention .long .Linfo_string10 # DW_AT_name .byte 8 # DW_AT_byte_size .byte 2 # DW_AT_decl_file .byte 1 # DW_AT_decl_line .byte 13 # Abbrev [13] 0x5b:0xc DW_TAG_member .long .Linfo_string8 # DW_AT_name .long 70 # DW_AT_type .byte 2 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .byte 0 # DW_AT_data_member_location .byte 13 # Abbrev [13] 0x67:0xc DW_TAG_member .long .Linfo_string9 # DW_AT_name .long 70 # DW_AT_type .byte 2 # DW_AT_decl_file .byte 3 # DW_AT_decl_line .byte 4 # DW_AT_data_member_location .byte 0 # End Of Children Mark .byte 14 # Abbrev [14] 0x74:0x4e DW_TAG_subprogram .quad .Lfunc_begin1 # DW_AT_low_pc .long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc .byte 1 # DW_AT_frame_base .byte 87 # DW_AT_GNU_all_call_sites .long .Linfo_string12 # DW_AT_linkage_name .long .Linfo_string13 # DW_AT_name .byte 2 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long 70 # DW_AT_type # DW_AT_external .byte 4 # Abbrev [4] 0x91:0xd DW_TAG_formal_parameter .byte 1 # DW_AT_location .byte 85 .long .Linfo_string19 # DW_AT_name .byte 2 # DW_AT_decl_file .byte 9 # DW_AT_decl_line .long 70 # DW_AT_type .byte 5 # Abbrev [5] 0x9e:0xf DW_TAG_variable .long .Ldebug_loc1 # DW_AT_location .long .Linfo_string17 # DW_AT_name .byte 2 # DW_AT_decl_file .byte 10 # DW_AT_decl_line .long 82 # DW_AT_type .byte 15 # Abbrev [15] 0xad:0x14 DW_TAG_inlined_subroutine .long 42 # DW_AT_abstract_origin .quad .Lfunc_begin1 # DW_AT_low_pc .long .Ltmp1-.Lfunc_begin1 # DW_AT_high_pc .byte 2 # DW_AT_call_file .byte 13 # DW_AT_call_line .byte 10 # DW_AT_call_column .byte 0 # End Of Children Mark .byte 0 # End Of Children Mark .Ldebug_info_end1: .section .debug_str,"MS",@progbits,1 .Linfo_string0: .asciz "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 37d6c1cc7d4dd3a8a47ba62254bc88521bd50d66)" # string offset=0 .Linfo_string1: .asciz "main.cpp" # string offset=101 .Linfo_string2: .asciz "/dwarf4CrossCULocList" # string offset=110 .Linfo_string3: .asciz "helper1.cpp" # string offset=169 .Linfo_string4: .asciz "_ZL6helperR4Foo2" # string offset=181 .Linfo_string5: .asciz "helper" # string offset=198 .Linfo_string6: .asciz "int" # string offset=205 .Linfo_string7: .asciz "f" # string offset=209 .Linfo_string8: .asciz "x" # string offset=211 .Linfo_string9: .asciz "y" # string offset=213 .Linfo_string10: .asciz "Foo2" # string offset=215 .Linfo_string11: .asciz "main" # string offset=220 .Linfo_string12: .asciz "_Z4foo2i" # string offset=225 .Linfo_string13: .asciz "foo2" # string offset=234 .Linfo_string14: .asciz "argc" # string offset=239 .Linfo_string15: .asciz "argv" # string offset=244 .Linfo_string16: .asciz "char" # string offset=249 .Linfo_string17: .asciz "foo" # string offset=254 .Linfo_string18: .asciz "Foo" # string offset=258 .Linfo_string19: .asciz "i" # string offset=262 .ident "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 37d6c1cc7d4dd3a8a47ba62254bc88521bd50d66)" .ident "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 37d6c1cc7d4dd3a8a47ba62254bc88521bd50d66)" .section ".note.GNU-stack","",@progbits .addrsig .section .debug_line,"",@progbits .Lline_table_start0: