diff --git a/llvm/test/tools/llvm-dwp/X86/empty_warning.s b/llvm/test/tools/llvm-dwp/X86/empty_warning.s new file mode 100644 index 00000000000000..975b53f221b8c6 --- /dev/null +++ b/llvm/test/tools/llvm-dwp/X86/empty_warning.s @@ -0,0 +1,145 @@ +# RUN: llvm-mc --triple=x86_64-unknown-linux --filetype=obj -dwarf-version=4 %s -o non_split.o +# RUN: llvm-dwp -e non_split.o -o non_split.dwp 2>&1 | FileCheck %s --check-prefix=CHECK-WARNING + +# CHECK-WARNING: warning: executable file does not contain any references to dwo files + +.ifdef GEN +;--- main.c +int main() { + return 0; +} +;--- gen +clang -g -S -gdwarf-4 main.c -o - +.endif + .text + .file "main.c" + .globl main # -- Begin function main + .p2align 4, 0x90 + .type main,@function +main: # @main +.Lfunc_begin0: + .file 1 "/proc/self/cwd" "main.c" + .loc 1 8 0 # main.c:8:0 + .cfi_startproc +# %bb.0: # %entry + pushq %rbp + .cfi_def_cfa_offset 16 + .cfi_offset %rbp, -16 + movq %rsp, %rbp + .cfi_def_cfa_register %rbp + xorl %eax, %eax + movl $0, -4(%rbp) +.Ltmp0: + .loc 1 9 5 prologue_end # main.c:9:5 + popq %rbp + .cfi_def_cfa %rsp, 8 + retq +.Ltmp1: +.Lfunc_end0: + .size main, .Lfunc_end0-main + .cfi_endproc + # -- End function + .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 0 # DW_CHILDREN_no + .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 + .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 3 # 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 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:0x40 DW_TAG_compile_unit + .long .Linfo_string0 # DW_AT_producer + .short 12 # 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:0x19 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 86 + .long .Linfo_string3 # DW_AT_name + .byte 1 # DW_AT_decl_file + .byte 8 # DW_AT_decl_line + .long 67 # DW_AT_type + # DW_AT_external + .byte 3 # Abbrev [3] 0x43:0x7 DW_TAG_base_type + .long .Linfo_string4 # 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,"MS",@progbits,1 +.Linfo_string0: + .byte 0 # string offset=0 +.Linfo_string1: + .asciz "main.c" # string offset=1 +.Linfo_string2: + .asciz "/proc/self/cwd" # string offset=8 +.Linfo_string3: + .asciz "main" # string offset=23 +.Linfo_string4: + .asciz "int" # string offset=28 + .section .GCC.command.line,"MS",@progbits,1 + .zero 1 + .ascii "/usr/local/bin/clang-11 -Qn -g -S -gdwarf-4 main.c -o -" + .zero 1 + .section .debug_str,"MS",@progbits,1 + .section ".note.GNU-stack","",@progbits + .addrsig + .section .debug_line,"",@progbits +.Lline_table_start0: diff --git a/llvm/tools/llvm-dwp/llvm-dwp.cpp b/llvm/tools/llvm-dwp/llvm-dwp.cpp index 4c4f2a9fdf78b5..18f4f1a0eb9fbf 100644 --- a/llvm/tools/llvm-dwp/llvm-dwp.cpp +++ b/llvm/tools/llvm-dwp/llvm-dwp.cpp @@ -188,8 +188,11 @@ int llvm_dwp_main(int argc, char **argv, const llvm::ToolContext &) { std::make_move_iterator(DWOs->end())); } - if (DWOFilenames.empty()) + if (DWOFilenames.empty()) { + WithColor::defaultWarningHandler(make_error( + "executable file does not contain any references to dwo files")); return 0; + } std::string ErrorStr; StringRef Context = "dwarf streamer init";