1; RUN: llc -split-dwarf=Enable -O0 %s -function-sections -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t 2; RUN: llvm-dwarfdump -debug-dump=abbrev %t | FileCheck --check-prefix=FUNCTION-SECTIONS %s 3; RUN: llvm-readobj --relocations %t | FileCheck --check-prefix=FUNCTION-SECTIONS-RELOCS %s 4 5; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t 6; RUN: llvm-dwarfdump -debug-dump=abbrev %t | FileCheck --check-prefix=NO-FUNCTION-SECTIONS %s 7 8; From: 9; int foo (int a) { 10; return a+1; 11; } 12; int bar (int b) { 13; return b+2; 14; } 15 16; With function sections enabled make sure that we have a DW_AT_ranges attribute. 17; FUNCTION-SECTIONS: DW_AT_ranges 18 19; Check that we have a relocation against the .debug_ranges section. 20; FUNCTION-SECTIONS-RELOCS: R_X86_64_32 .debug_ranges 0x0 21 22; Without function sections enabled make sure that we have no DW_AT_ranges attribute. 23; NO-FUNCTION-SECTIONS-NOT: DW_AT_ranges 24; NO-FUNCTION-SECTIONS: DW_AT_low_pc DW_FORM_addr 25; NO-FUNCTION-SECTIONS-NOT: DW_AT_ranges 26 27; Function Attrs: nounwind uwtable 28define i32 @foo(i32 %a) #0 { 29entry: 30 %a.addr = alloca i32, align 4 31 store i32 %a, i32* %a.addr, align 4 32 call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !13, metadata !{!"0x102"}), !dbg !14 33 %0 = load i32* %a.addr, align 4, !dbg !14 34 %add = add nsw i32 %0, 1, !dbg !14 35 ret i32 %add, !dbg !14 36} 37 38; Function Attrs: nounwind readnone 39declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 40 41; Function Attrs: nounwind uwtable 42define i32 @bar(i32 %b) #0 { 43entry: 44 %b.addr = alloca i32, align 4 45 store i32 %b, i32* %b.addr, align 4 46 call void @llvm.dbg.declare(metadata i32* %b.addr, metadata !15, metadata !{!"0x102"}), !dbg !16 47 %0 = load i32* %b.addr, align 4, !dbg !16 48 %add = add nsw i32 %0, 2, !dbg !16 49 ret i32 %add, !dbg !16 50} 51 52attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 53attributes #1 = { nounwind readnone } 54 55!llvm.dbg.cu = !{!0} 56!llvm.module.flags = !{!10, !11} 57!llvm.ident = !{!12} 58 59!0 = !{!"0x11\0012\00clang version 3.5.0 (trunk 204164) (llvm/trunk 204183)\000\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/usr/local/google/home/echristo/z.c] [DW_LANG_C99] 60!1 = !{!"z.c", !"/usr/local/google/home/echristo"} 61!2 = !{} 62!3 = !{!4, !9} 63!4 = !{!"0x2e\00foo\00foo\00\001\000\001\000\006\00256\000\001", !1, !5, !6, null, i32 (i32)* @foo, null, null, !2} ; [ DW_TAG_subprogram ] [line 1] [def] [foo] 64!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/usr/local/google/home/echristo/z.c] 65!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 66!7 = !{!8, !8} 67!8 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] 68!9 = !{!"0x2e\00bar\00bar\00\002\000\001\000\006\00256\000\002", !1, !5, !6, null, i32 (i32)* @bar, null, null, !2} ; [ DW_TAG_subprogram ] [line 2] [def] [bar] 69!10 = !{i32 2, !"Dwarf Version", i32 4} 70!11 = !{i32 1, !"Debug Info Version", i32 2} 71!12 = !{!"clang version 3.5.0 (trunk 204164) (llvm/trunk 204183)"} 72!13 = !{!"0x101\00a\0016777217\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [a] [line 1] 73!14 = !MDLocation(line: 1, scope: !4) 74!15 = !{!"0x101\00b\0016777218\000", !9, !5, !8} ; [ DW_TAG_arg_variable ] [b] [line 2] 75!16 = !MDLocation(line: 2, scope: !9) 76